The ultimate guide to building a mobile app
Got a great idea for an app? Need a new way to grow your business? We tell you everything you need to know about building a mobile app in 2020.
Mobile App Development is the creation and development of phones, tablets, personal digital assistants, and other devices that have operating systems. It involves creating software applications for the devices, such as games, utilities, and sometimes even simple to-do lists. These applications are created using programming languages such as HTML5 and JavaScript, which allow developers to create a good user interface. Mobile App Development requires both specific and hard skills from developers, from debugging existing applications to creating entirely new ones.
A great benefit of having a Mobile App Developer on your side is the knowledge and experience they can provide to make your business grow. In addition to creating mobile apps that are good for the user experience, Mobile App Developers can help you with backing up the data from your application securely, modifying an existing app to meet new requirements, troubleshooting any current issues in your application, setting up a server for your application and so much more.
Here's some projects that our expert Mobile App Developer made real:
We have passionate professional freelancers skilled in the art of Mobile App Development who can work with businesses of any size to develop their ideal mobile applications. Our team has made things possible that many thought impossible by creating usable customer experiences with Mobility Solutions Services like periodic maintenance checks and make upgrades as technology advances without compromising customer data. We also provide support throughout development iterations as needed.
We can help make your vision a reality with affordable solutions for all your mobile needs! Hire a Mobile App Developer in Freelancer.com who will help you from concept through completion on any project related to mobile app development. Our experts are capable of handling difficult tasks such as debugging existing applications and properly integrating third party services into applications with utmost efficiency. Get ahead of your competitors with Mobile App Development from Freelancer.com today!
De 363,127 opiniones, los clientes califican nuestro Mobile App Developers 4.9 de un total de 5 estrellas.Mobile App Development is the creation and development of phones, tablets, personal digital assistants, and other devices that have operating systems. It involves creating software applications for the devices, such as games, utilities, and sometimes even simple to-do lists. These applications are created using programming languages such as HTML5 and JavaScript, which allow developers to create a good user interface. Mobile App Development requires both specific and hard skills from developers, from debugging existing applications to creating entirely new ones.
A great benefit of having a Mobile App Developer on your side is the knowledge and experience they can provide to make your business grow. In addition to creating mobile apps that are good for the user experience, Mobile App Developers can help you with backing up the data from your application securely, modifying an existing app to meet new requirements, troubleshooting any current issues in your application, setting up a server for your application and so much more.
Here's some projects that our expert Mobile App Developer made real:
We have passionate professional freelancers skilled in the art of Mobile App Development who can work with businesses of any size to develop their ideal mobile applications. Our team has made things possible that many thought impossible by creating usable customer experiences with Mobility Solutions Services like periodic maintenance checks and make upgrades as technology advances without compromising customer data. We also provide support throughout development iterations as needed.
We can help make your vision a reality with affordable solutions for all your mobile needs! Hire a Mobile App Developer in Freelancer.com who will help you from concept through completion on any project related to mobile app development. Our experts are capable of handling difficult tasks such as debugging existing applications and properly integrating third party services into applications with utmost efficiency. Get ahead of your competitors with Mobile App Development from Freelancer.com today!
De 363,127 opiniones, los clientes califican nuestro Mobile App Developers 4.9 de un total de 5 estrellas.Más detalles: ¿Cuál es la plataforma principal del app de citas? Ambas ¿Qué información deberían incluir los freelancers exitosos en su solicitud? Trabajo anterior ¿Qué funcionalidades principales deseas incluir en la app de citas? Mensajería instantánea
Quiero lanzar una aplicación de chat sencilla que funcione tanto en iOS como en Android. El corazón del proyecto es la mensajería de texto en tiempo real, con la opción de que los usuarios envíen imágenes directamente dentro de cada conversación. Puntos clave del alcance: • Dos plataformas nativas o una sola base de código (multiplataforma es bienvenida) que compile para iOS y Android. • Pantallas básicas: registro / inicio de sesión, lista de chats, ventana de conversación, visualizador de imágenes. • Envío y recepción de mensajes de texto, con notificaciones push. • Carga y descarga de imágenes adjuntas, manteniendo compresión y vista previa. &b...
Desarrollo de Aplicación Móvil para Gestión de Gastos Familiares Mensuales Se requiere el desarrollo de una aplicación móvil intuitiva y fácil de usar para la gestión de gastos familiares mensuales. La aplicación debe permitir a los usuarios registrar sus gastos, categorizarlos (por ejemplo, alimentación, transporte, vivienda, ocio), y visualizar resúmenes mensuales de sus finanzas. Es fundamental que la aplicación ofrezca una interfaz clara y funcionalidades básicas para el seguimiento del presupuesto familiar. Se espera que la solución sea robusta y escalable para futuras mejoras.
Más detalles: ¿Qué tipo de iconos necesitas para la app? Iconos de interfaz de usuario pantalla principal, icono notiifaciones ¿Qué estilo de diseño prefieres para los iconos de interfaz de usuario? Minimalista ¿Cuántos iconos necesitas? 1-5 iconos
I want to bring to life a cross-platform survival game in the spirit of the recent “Whiteout Survival” ads. The project targets both iOS and Android from day one and must feel native on each store. Core Vision • 3D graphics that deliver the same cold, rugged atmosphere shown in the ad, optimised for mid-range devices without sacrificing visual punch. • Engaging survival mechanics: temperature, hunger, shelter, and day-night cycles that constantly pressure the player. • Deep yet intuitive resource-management loop covering gathering, crafting, base upgrades, and worker assignment. Scope of Work You’ll take the concept from paper to a test-ready build. That means creating stylised low-poly assets or integrating stock packs where it saves time, se...
I need APP developer who can create from Figma artwork - Driver APP front-end Design & its front-end code which can be ready to use or integrate to CodeIgniter 4 PHP framework. Basic Info & Settings for the App Development a. SET - APP Name – Yolo Driver | SKU – YRLGROUP1 | BUNDLE NAME – b. Technology to be used – Flutter - Dart – Kotlin – Swift – firebase – CI4 – PHP framework - API c. Provide Full Source Code + Integrate with Live Server & App Should be able to work on iOS & Android both type of devices. d. All APIs & Controller files store under Controller folders. PATH = app/Controller/YoloDriverAPP/… e. Name - Driver APP Controller file name = f. All css or Splash Screen Design related files –...
I’m putting together a brand-new streaming package for when GTA 6 drops and I need a one-of-a-kind overlay that instantly tells viewers they’re in a slick, futuristic version of Vice City. The look I’m after is unapologetically neon—think vibrant pinks, cyans and electric purples illuminating a high-tech HUD rather than the familiar retro pastels. Here’s what has to sit front and center in the design: • Chat box • Donation alerts • Follower / Subscriber count All elements should share the same angular, cyber-style framing so they feel like they came straight out of an in-game interface. Please keep the overall footprint compact so nothing crucial in-game gets covered, yet leave enough breathing room for legibility on both 16:9 and 21:9 ...
I want to launch a compact but polished e-commerce presence made up of two parts: • a mobile app for iOS and Android • a responsive website connected to a Shopify storefront The catalogue is small—about 20 products—so the focus is on a clean shopping flow, fast load times and an intuitive design rather than heavy-duty inventory features. I already chose Shopify as the platform, so every element of the build should make full use of Shopify’s native checkout, product management and payment integrations while keeping the look and feel on brand. Deliverables • Fully designed, live Shopify site with all 20 products uploaded, variant options set, taxes and shipping rules configured. • Mobile app (iOS & Android) that mirrors the website cata...
We are looking for an experienced Full-Stack Developer / Development Team to build Pet Services Mobile Application. Mobile Application Flutter / Dart Android & iOS Modern, responsive UI Dynamic UI / Schema-Driven architecture Fronted / Admin Panel / React Super Admin Panel Category & Subcategory Management Dynamic Field & Form Management User & Service Provider Management Subscription, Leads, Advertisement & Reports ⚙️ Backend Python + FastAPI REST APIs Business Logic Authentication & Authorization Payment Subscription Wallet Lead Management Chat Booking Notifications Verification Database & Infrastructure PostgreSQL + JSONB Redis Docker Linux VPS Nginx Secure & scalable architecture Main Platform Features The application will support: Pet Buyin...
I have an Android app built specifically for sales agents who focus on lead generation. The workflow is simple: “connectors” inside the app open conversations that later become prospects, so quality feedback before a public rollout is essential. What I need from you • Set up a private, closed-group test track in Google Play Console, invite the tester list I provide and be sure only those accounts have access. • Walk the build through internal and then external testing, monitoring installs, crashes and user feedback (Firebase Crashlytics, Google Play pre-launch reports or similar tools are fine). • Once we sign off on stability and UX, move the same build to production and make it live on the Play Store under my developer account, completing store listing a...
I have up to five PDF files that I need re-created as fully editable Word documents. Each file mixes plain text with a handful of embedded images, so the finished .docx should preserve both the wording and the visual layout as closely as possible. Everything can be done on a smartphone: simply open the PDF, retype the text (or use any reliable mobile OCR app if you prefer), insert the images in their original order, and apply basic headings or bold where you see them in the source. No complex formatting is involved—just a clean, faithful copy. Deliverables • One Word file for each PDF, named to match the original • Text proof-read for typos, with original line breaks respected • Images pasted in the correct positions and centered if they were centered in the PD...
### **Project Title:** **Full Stack Developer: Local Tutor Marketplace Directory, Programmatic SEO, Live Lead Board & GBP/CRM Integration** --- ### **Project Overview:** We are a home tutoring network operating across Delhi NCR (covering KG–12th, JEE, and NEET across CBSE, ICSE, and IB boards). We are looking for an experienced **Full Stack Web Developer** to design and build a high-performance, mobile-first tutor marketplace directory and lead management portal. The platform has three key stakeholders: 1. **Parents/Students:** A fast local search directory to discover verified home tutors by subject, grade, board, and micro-locality (with "Book Demo" CTAs). 2. **Home Tutors (Non-Tech Savvy):** A simple zero-friction onboarding flow and a live tuition job board to...
I need a full-featured Social Media Marketing panel developed for both iOS and Android, and I need it live as soon as realistically possible. The goal is to let users purchase and track social media services from their phones with the same ease they would find on a web panel—only streamlined for mobile. Core flow I have in mind • User signs up, deposits funds, browses available services, places an order, tracks order status, and receives push notifications. • An admin interface (accessible from the same codebase or a lightweight companion app) controls service pricing, order moderation, user balances, ticket replies, and simple analytics. • All service listings must pull from existing SMM API endpoints; no manual entry. Tech expectations A single codebase s...
I maintain the “MediFind – Chemist App” on Google Play and have just received the policy notice that it must target the latest Android version ahead of the 31 Aug 2026 deadline. Right now the project still declares targetSdkVersion “API 36 or Higher”, yet Play Console is flagging the bundle because the compiled artefact is older. ****And Needs to add sound in one Place. Your task is to bring the entire codebase up to the current target API level accepted by Google Play, upgrade Gradle tooling, and resolve any breaking changes in code or third-party dependencies. The code is a standard Android Studio project (Java & a bit of Kotlin), published as an AAB; minSdkVersion must stay exactly as it is so existing users are not cut off. Key outcomes I need fro...
I need a complete design system that mirrors the user experience and feature depth of , delivered for both web and mobile. check the we need all features, really all, so there never can be a confusion because all is needed
I need up to ten outdated product entries removed from the live catalogue in both the iOS and Android versions of my app. The items are no longer sold, so they must disappear from every user-facing screen, search index, and in-app notification feed without disturbing the rest of the inventory. You will have access to our Firebase-backed admin panel as well as the Git repositories for each platform. The task should include cleaning any linked images or metadata on the server to avoid orphaned assets and making a quick sanity check on the build after the change so the next App Store / Play Store release goes smoothly. Deliverables: • Removal of 1-10 specified listings from production databases • Verification that they no longer appear in either iOS or Android builds (simulator ...
I’m ready to move from concept to working MVP for an online “rental boyfriend” service and I need a developer who can take care of the full flow end-to-end. Core platform elements • Profile creation – each boyfriend must be able to sign up, upload photos, write a bio and set basic preferences. • Real-time chat – instant, in-app messaging so conversations stay on the platform. • Booking system – clients pick a time slot and lock it in. Extra functionality that is essential to the first release • User reviews and ratings after each booking. • Secure payment processing (card and wallet friendly). • Calendar and scheduling so boyfriends can open, block or adjust their availability. User roles For this initia...
Ищу фрилансера для доработки и запуска готового веб-приложения У меня уже есть готовое приложение, которое сейчас работает в формате сайта. Необходимо завершить проект и подготовить его к полноценному запуску. Что нужно сделать: - Перенести существующий проект на нормальный рабочий домен. - Проверить текущий сайт, исправить возможные ошибки и недоработки. - Настроить корректную работу сайта на компьютере, планшете и телефоне. - Подключить необходимые настройки домена, SSL и хостинга. - Проверить базу данных, авторизацию, формы и основные функции приложения. - Оценить возможность сделать из существующего веб-приложения полноценное мобильное приложение для iOS и Android, которое пользователи смогут скачать из App Store и Google Play. - Если полноценное приложение не требуется или есть бол...
Fuel Management Dashboard – Development Scope (SJ) 1. Project Overview * The development covers 1 site and 1 fuel tank only. * This is not a new system being designed from scratch. * MST already has experience developing similar dashboard functionality. * MST will provide the existing dashboard reference, wireframe, architecture, APIs, business logic and functional requirements. * The developer is primarily required for coding, integration, testing and deployment. 2. MST Will Provide * Existing dashboard reference. * Dashboard wireframe/design. * Solution architecture. * Functional requirements. * Business logic. * Required API access. * Data mapping. * Common identifier between the two data sources. * Reporting requirements. * Testing/acceptance requirements. * Technical directio...
My Android app has just been rejected by Google Play because it no longer targets the required API level, and I am also running into Google Cloud Storage failures in production. I need someone who can jump into the existing codebase, raise the targetSdkVersion to meet the latest Play Console requirements, resolve every compile or dependency conflict that appears, and then straighten out the cloud-storage layer so uploads and downloads work reliably again. The project will be complete when: • The app builds in Android Studio (Kotlin / Java) with the new API level and no deprecation or permission warnings that block release. • A release build is accepted by the Google Play Console without policy or API‐level errors. • All storage operations succeed against my current GC...
Fuel Management Dashboard – Development Scope 1. Project Overview * The previous project scope was too broad and has now been narrowed to a specific dashboard development package. * The initial development covers 1 site and 1 fuel tank only. * This is not a new system being designed from scratch. * MST already has experience developing similar dashboard functionality. * MST will provide the existing dashboard reference, wireframe, architecture, APIs, business logic and functional requirements. * The developer is primarily required for coding, integration, testing and deployment. 2. MST Will Provide * Existing dashboard reference. * Dashboard wireframe/design. * Solution architecture. * Functional requirements. * Business logic. * Required API access. * Data mapping. * Common ide...
I’m planning a full-cycle mobile app build and I need an experienced developer or small team to take it from concept to launch. The core requirement is clear: this is a mobile app development project. I’m open to suggestions on whether the best route is native iOS, native Android, or a cross-platform framework—convince me with your preferred stack, past results, and the advantages you see. At this stage I’m still refining the exact feature set, so your ability to guide discovery, propose architecture, and flag potential pitfalls will be valuable. Expect to collaborate on wireframes, iterate through milestones, and hand over clean, well-documented source code along with basic test coverage. If you’re comfortable setting up an admin panel or analytics hooks, pl...
I need a simple Power Apps form that walks a user through a checklist of fewer than twenty questions. The list mixes Text input, Multiple choice, and Yes/No fields, so the control types must switch cleanly as the user moves down the form. Only the Text input questions should reference history. For those, I want the most recent submitted value to appear next to the field where the new answer needs to be submitted, giving users an at-a-glance reminder of what they entered last time without overwriting the editable box. The finished app has to save each run as a new record while still being able to pull the prior value for the relevant text fields when the same user—or any user, if that is easier—opens the checklist again. As long as the experience looks tidy on desktop and mobi...
I need an Android-only application that can forecast the multiplier curve in 1xbet’s Crash game with convincing accuracy. Two core capabilities matter to me: • Real-time predictions that update before each round starts, giving the user a clear multiplier target or “safe cash-out” point. • A back-end layer that continuously absorbs past Crash rounds so the model can refine itself through historical data analysis. You are free to pick the stack—Kotlin, Java, or a cross-platform engine such as Flutter—so long as the final APK runs smoothly on current Android versions and the source code is clean, well-documented, and easy to extend. I will supply sample data streams; you handle everything else: data ingestion, model training, on-device inference,...
I want to build a small, self-contained application that lets me place and manage equity trades from a single interface. At this stage I have not committed to any one platform or trading style, so I am happy to consider web, desktop, or mobile solutions and to refine the workflow together once we review your proposed stack and timeline. Core functions I need right away are: • Secure sign-in tied to my brokerage API • Real-time quotes and basic charting • Order entry for market, limit, and stop orders • A straightforward positions and P&L view If you have experience wiring APIs such as Interactive Brokers, Alpaca, TD Ameritrade, or similar, please highlight that, along with the language or framework you would prefer (for example Python with FastAPI, React + ...
I’m building an online “rental boyfriend” service that exists entirely in the digital space. The goal is to let customers book virtual time with a companion and enjoy three core experiences once the booking starts: • live video calls powered by WebRTC or a comparable real-time engine • in-platform text chat that stays archived for each session • lightweight interactive games the pair can launch without leaving the call User discovery should feel familiar—visitors scroll through cards that show a profile picture, click one they like, and land on a more detailed availability page. For now, a photo is the only mandatory profile element, but the codebase should keep room for optional bios or interest tags so we can activate those later without r...
I have a full bank of multiple-choice questions, their options, and an answer key ready to load. What I need is a lightweight quiz application that: • Runs smoothly on both a responsive website and a companion mobile app. • Lets each student create an account, log in, and sit the test only once. • Presents one question at a time (or paginated, whichever is quicker for you to code), captures their selections, and forces completion before submission. • Immediately displays the final score to the student on screen. • Emails me an easy-to-read report that shows every question, the student’s chosen answer, the correct answer, and a total tally of right vs. wrong. Timing is critical: you’ll need to start within 24 hours of award and deliver a fully ...
I'm looking to build an app similar to Astrosage, where users can connect with specialists via a calling feature. The call rate would be approximately 5 rupees per minute. Key functionalities include: - User registration and profile - Specialist directory - Payment processing The app should be developed for both iOS and Android platforms. Ideal Skills and Experience: - Proven experience in mobile app development for both iOS and Android - Strong background in integrating payment processing systems - Ability to design user-friendly registration and profile management features - Experience in creating comprehensive specialist directories Please include relevant past work in your application.
I need a specialist who can create a brand-new Google Play Developer account under my details and walk it all the way through to live publication. All the required personal, payment, and contact information is ready on my side, so there is no paperwork delay—what I lack is time and expertise. The work does not stop at account creation. Once the developer console is active, I also want the first app submitted, its store listing fully optimized (text, screenshots, feature image, tags, keywords), and the dashboard configured for smooth, ongoing account management. Deliverables • New Google Play Developer account, verified and transferred to my ownership • First APK/AAB uploaded and approved, including content rating and policy declarations • Store listing copy &...
I need a fully functional, personal Google Play Console account and would like you to walk me through every step of the process. This means you will not only create and verify the account for me but also stay available while we link payment information, complete the mandatory identity checks, and review the key policy guidelines so the account is ready to publish apps without issues. Deliverables: • A new, verified Google Play Console account registered in my name • Payment profile correctly connected and confirmed • A short, live or recorded walkthrough explaining the main dashboard features, policy basics, and first-app publication checklist • Final hand-over of secure login credentials once everything is confirmed working If you have recent experience setting...
Job Posting: Mobile App Developer for iOS & Android Deployment (React/Supabase) Project Overview: Seeking an experienced mobile developer to package a fully operational, responsive full-stack web application into native mobile binaries and publish them to the Apple App Store and Google Play Store. The application is a chat-based hiring marketplace built with a React frontend and Supabase backend (handling real-time messaging, database tables, and multi-language routing). All UI layouts and database architecture are complete. Key Responsibilities: Mobile Packaging: Wrap the existing React web code repository using CapacitorJS (preferred) or a similar cross-platform framework. Native Features: Configure required mobile permissions (Push Notifications, Local Storage, Camera, and File Uplo...
I’m looking for a Fresher or Trainee developer who wants to work on a real product and grow with the project. The ideal candidate should have basic knowledge of Flutter, Python, and web scraping and be willing to learn and take ownership as the product develops. What You’ll Work On Step 1 — AI Chat POC Build a Flutter-based AI chat interface Connect a controlled knowledge base Integrate AI/LLM APIs Create and improve the initial POC Step 2 — Data Mining & Integrations Python-based web scraping Data collection and processing API integrations Connect the mining system with the application Step 3 — Communication Channels Set up communication APIs Build messaging/communication workflows Connect different services with the product Required Skills Basic ...
I’m building a new Android-only VPN focused on delivering fast, rock-solid connections, and I need a modern interface that instantly communicates speed and reliability. Here’s what I’m after: sleek onboarding, a single-tap connect screen with real-time status feedback, server-selection flows that stay lightweight, and a settings area that keeps advanced options tidy yet accessible. Animations should be subtle and purposeful—think micro-interactions that reinforce the feeling of performance without slowing anything down. I’ll supply the brand palette and logo; you translate that into a complete UI/UX package. Figma is my preferred workspace, but I’m open to Adobe XD or Sketch if that’s where you’re fastest. Deliverables • High-fi...
We currently have a Android App which has a interactive animation built in Java and Android XML, you can check what this animation looks like by clicking a topic in the app and then clicking any purple line. We want to add some panels on the homepage that displays each of the categories that we have and when these are panels are clicked we want these boxes to have a press animation. When the next page is loaded which has the topics for the chosen category that’s been selected we can split by latest etc. We may also want to change the page which lists all the topics into one topic per line and also animate the pressing of the topic in some way. I will share any further details required when we speak on chat. This may require you to add categories to our website database so that we ca...
I run a clothing retail shop and I’m ready to replace my paper spreadsheets with a single Android app that puts all of my numbers in one place. The cornerstone of the project is powerful analytics: I want to see trends, charts and drill-downs at a tap, so the data architecture needs to be built with future dashboards in mind. Core scope • Sales tracking – the app must record each sale on the spot and immediately feed two ready-made views: a daily sales report and product-wise sales breakdown. • Expense management – for now I only need to log and analyse utility bills, but the design should leave room to add inventory costs or salaries later without rewriting the database. • Simple form-based data entry – cashiers or I should be able to add a sa...
I’m ready to build a production-grade, non-custodial crypto wallet that runs smoothly on iOS and Android. Private keys must never leave the user’s device, and the experience needs to feel as simple as any mainstream payments app. Core feature set • Send and receive cryptocurrencies with QR scanning and shareable wallet addresses • Real-time and historical transaction list with clear status indicators • Multi-currency support from day one (Bitcoin, Ethereum/ERC-20 preferred) and an architecture that lets us add new assets quickly Security and recovery • Biometric authentication (Face ID / Touch ID / Android Biometrics) • Optional two-factor authentication before approving a transaction • Passphrase backup that users can export, verif...
I’m looking for an experienced Roblox game developer or development team to help build a polished multiplayer farming/survival game. I’m looking for someone experienced with: Roblox Studio & Lua/Luau scripting Multiplayer systems Farming/harvesting mechanics Inventory & currency systems Shops and upgrades Player progression NPC/animal AI Day/night systems UI development Data saving/DataStore systems Game optimization Monetization/game passes/dev products I already have the core game concept and design planned out and can provide more detailed documentation to serious candidates. I’m looking for a developer who can help turn the concept into a fully playable, polished Roblox game, not just a basic prototype. Please include examples of Roblox games you’ve prev...
I need an Android app that allows me to remotely control another Android device. Essential Functionalities: - Access files and data: View, edit, and delete - Manage apps: Install/uninstall, open/close, and monitor usage - Control device settings Ideal Skills & Experience: - Android app development - Experience with remote access technologies - Strong security protocols knowledge - UI/UX design for user-friendly interfaces Please include examples of similar work and ensure robust security measures.
I need a complete, in-house GPS tracking solution that can comfortably serve well over 50,000 vehicles without relying on the off-the-shelf Chinese systems we currently use. The project covers three client surfaces—Web, iOS, and Android—plus a robust back-end able to ingest, process, and store high-frequency location data in real time. Core functionality must include: real-time vehicle tracking on dynamic maps, configurable geofencing with instant alerts, and long-term historical data retention ready for playback or bulk export. Alerts are critical: push, SMS, and email should all be configurable through an easy rule engine. I also need an integrated payments & billing module so we can manage subscriptions and automatically invoice clients. An open, well-documented API lin...
I’m building a fully functional web-based application that lets people exchange private messages while staying anonymous. The same codebase must feel seamless on both desktop and mobile browsers, so a responsive front-end (React, Vue, or similar) paired with a solid back-end is essential. Core requirements • User accounts created and accessed strictly through an email-and-password flow. No social, no 2FA for now—keep the sign-up short but secure. • True anonymity once inside the system: users choose display handles unlinked to their registration email, and messages are accessible only to sender and recipient. • End-to-end encryption and database‐level hashing / salting of credentials. I’m open to your preferred libraries or frameworks as long as the ...
The Role We are looking for a highly seasoned Senior Full-Stack Developer to oversee the technical delivery of Phase 1 and Phase 2. You will lead the architecture, guide the implementation of the backend APIs, provide architectural support to a Backend Engineer, and oversee 4 Frontend Interns migrating and building our mobile application in React Native. Crucial Note: We are building a platform designed to sustain millions of users. If you rely on AI generation tools (like ChatGPT, Cursor, or Copilot) to write your core logic, this role is not for you. We need a true systems thinker who writes clean, scalable, production-grade code from scratch, understands deep database optimization down to the metal, and can debug complex distributed systems independently. Core Responsibilities Full-Sta...
Chcę zamówić kompletny projekt urządzenia IoT opartego na ESP32, które będzie mierzyło ciśnienie w instalacji C.O., prezentowało dane na ekranie dotykowym oraz sterowało elektrozaworem. Ekran ma jednocześnie: • wyświetlać aktualne ciśnienie, • pozwalać na ręczne otwarcie / zamknięcie elektrozaworu. Poza tym potrzebuję, aby system zapewniał: • alarm w przypadku awarii (np. spadku lub wzrostu ciśnienia poza zadany próg), • zdalne monitorowanie przez aplikację Tuya, • archiwum odczytów dostępne w aplikacji i na wyświetlaczu. Zakres prac obejmuje: 1. Schemat elektryczny i projekt PCB z ESP32, czujnikiem ciśnienia, sterownikiem elektrozaworu oraz interfejsem do ekranu dotykowego. 2. Oprogramowanie firmware: obsługa czujnika, logika a...
Je souhaite faire développer une application mobile nommée "Likpoti", disponible sur iOS et Android et conçue pour un usage international. Objectif principal : Créer une solution stable, bien conçue, prête pour être publiée sur l’App Store et Google Play avec les fonctionnalités suivantes : - Messagerie en temps réel entre utilisateurs (avec historique et pièces jointes). - Notifications push personnalisées. - Paiement en ligne sécurisé, incluant Mobile Money, cartes bancaires et portefeuilles mobiles avec support multi-devises. - Adaptation multilingue automatique en fonction de la localisation des utilisateurs. Livrables attendus : - Conception technique (React Nati...
I run RYIOB, a growing talent-sourcing agency that connects skilled remote workers with businesses and startups worldwide. I'm currently expanding RYIOB's talent network for upcoming remote client projects in software development, UI/UX, AI, data, DevOps, digital marketing and other digital services. If you're interested, please share your skills, experience, portfolio/GitHub, previous project work, availability and expected rate. Every applicant will go through a portfolio and previous-work review, followed by a short screening test relevant to their field. Only selected candidates who pass our review will be added to the RYIOB talent network and considered for suitable client projects. Projects may be part-time, full-time or project-based depending on client requirements. ...
I need an Android mobile app for my cloth retail shop. The app should help manage: Sales tracking Expense management Simple data entry with form-based interfaces Powerful analytics Future-ready for Android expansion Ideal skills and experience: - Mobile app development (Android) - Experience with data analytics integration - UI/UX design for simple, intuitive form-based data entry interfaces - Knowledge of retail management systems Please share your portfolio and relevant experience.
About the Company We are a stealth-mode private limited technology company working on advanced technologies at the intersection of Artificial Intelligence, Cognitive Computing, Autonomous Systems, Robotics and Aerospace. We are currently building highly ambitious products including a Cognitive OS / advanced AI systems and next-generation autonomous drone and aerospace technologies. Due to the confidential nature of our work, detailed product information will be shared only with shortlisted candidates. We are looking for exceptionally technical engineers, builders and researchers who want to work on difficult, real-world engineering problems rather than routine development work. Who We Are Looking For We are particularly interested in: AI / ML Engineers -Strong expertise in AI/ML, De...
# Multi-Vendor Food, Grocery, Alcohol & Delivery App – Android & iOS I am looking for an experienced **mobile app developer or development team** to build a professional, scalable **multi-vendor delivery marketplace** for **Android and iOS**, initially targeting the Namibian market with the ability to expand internationally. The platform will allow customers to order **restaurant food, groceries, household/retail products and alcohol** through one application, while connecting customers with restaurants, grocery shops, retailers and delivery drivers. The business model is based on **product markups, vendor commissions, driver credits, advertising and our own exclusive liquor business**. ## 1. CUSTOMER APP Customers should be able to: * Register/login and manage their pr...
Freelance UX/UI Designer – Credentis (3–4 Weeks, Figma) Project: Credentis – Digital ID and Workforce Verification Platform Engagement: 3–4 weeks (fixed-scope sprint) Deliverable: Production-ready Figma design system + key flows Platforms: Web dashboard (React) + Mobile wallet (Flutter) About Credentis Credentis is a trust and compliance platform for verified projects. Users hold decentralised identities (DIDs) and verifiable credentials, grant category-scoped consent, and participate in verified project workflows. There are two complementary clients under one brand: Mobile (Flutter) – Identity wallet for professionals and organisations: create/restore identity, manage credentials, accept project invites, and control consent. Web (React) – Operatio...
Saya ingin membangun sebuah aplikasi bisnis yang berjalan mulus di Android dan iOS. Fokus utama saya adalah mendapatkan solusi siap pakai yang dapat membantu operasional harian—mulai dari pendaftaran pengguna hingga pelaporan data secara real-time. Ruang lingkup kerja: • Rancang dan bangun aplikasi native atau cross-platform (silakan rekomendasikan pendekatan terbaik). • Buat antarmuka pengguna yang bersih dan intuitif, selaras dengan identitas merek saya. • Sertakan fitur dasar bisnis: autentikasi aman, dasbor ringkas, manajemen data pelanggan, dan notifikasi push. • Integrasikan backend sederhana (REST API atau Firebase) agar data tersinkron otomatis di kedua platform. • Uji aplikasi pada perangkat Android dan iOS terkini, perbaiki bug, lalu serahk...
Saya membutuhkan bantuan untuk mengembangkan sebuah website toko online yang modern, aman, dan mudah dikelola. Fokus saya adalah: • Pengembangan Web dan Aplikasi – saya memilih platform website terlebih dahulu, namun ke depannya mungkin ingin diperluas ke aplikasi mobile. • Jenis situs: Toko online lengkap dengan katalog produk, keranjang belanja, dan proses checkout yang lancar. Ruang lingkup kerja yang saya butuhkan meliputi: 1. Desain antarmuka yang responsif sehingga nyaman diakses lewat desktop maupun perangkat mobile. 2. Integrasi sistem pembayaran populer (transfer bank, kartu kredit, e-wallet). 3. Fitur manajemen produk: kategori, stok, diskon, dan laporan penjualan. 4. Panel admin sederhana agar saya dapat menambah atau mengedit produk sendiri. 5. K...
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