Mobile App Backend

We're looking for an experienced backend developer to help optimize and finalize our iOS app before launch. · API optimization and adjustments · Admin dashboard improvements and changes · General backend optimization for app performance · ...

We're hiring a backend engineer for Phase-3A of CricPulse, a calm live-cricket companion app. · All engine logic, timing, and UI are already frozen. · This role is backend execution only — not product development. · Your job is to set up a minimal backend that allows the app to r ...

We have an AI chat app with a backend using LLM models. · Subscription implementation · Testing all features · Bugs fixing and publishing the app on the Play Store. ...

We are seeking for a professional ethical Pentester to assist in connecting to the backend of an Android mobile application legally. · ...

I need a backend developer to develop the backend and integrate some APIs in an existing web app. · ...

I have an unfinished project I'd like a professional developer to take over and work on it. · ...

We are needing a backend developer for our app startup marketplace. · Needs to have experience in Prisma and TypeScript. · ...

I need an experienced backend developer to build a secure authentication system (REST API) for a mobile nutrition tracking app.The API will handle user registration , login , JWT token management and connect to an existing SQL Server database. · ...

The project requires a Flutter app developer to review existing APIs and implement missing endpoints or adjust existing ones. The app should be fully functional across various devices and screen sizes. · Review existing APIs. · ...

We are seeking a skilled backend developer to assist in building the backend of our mobile application using The ideal candidate will have experience in developing RESTful APIs, managing databases, and ensuring application security. · ...

We are seeking a skilled freelancer to integrate a back-end database into our app created on The goal is to facilitate the collection of user inputs efficiently through a no-code solution. · Python · API · ...

We're hiring a backend engineer for Phase-3A of CricPulse, a calm live-cricket companion app. · This role is backend execution only — not product development. We expect: · a running backend on DigitalOcean, · static backend IP, · correct Firebase writes visible to the app · backe ...

I am looking for an experienced backend-focused app developer to help me get multiple apps fully running, · connected, · and approved in the Apple App Store. · /Authentication (Apple Sign-In,/Google,email/password)/Database design & management (Supabase,/Firebase,/PostgreSQL etc. ...

h2>Job summary · We are seeking a skilled backend mobile app developer to join our team. · ...

We are looking for a senior backend engineer to finalize and clean up the backend logic of a premium iOS app. · Auth & account system using Clerk only (no Supabase Auth) · Invite codes system · Venues availability logic · Booking system with Stripe integration · ...

We are looking for an experienced developer to assist in finalizing a revolutionary longevity app built on Flutterflow. · To enhance the backend and ensure seamless integration. · ...

We are seeking an experienced Unity backend developer to enhance our gaming app. · ...

Seeking a freelancer with experience in Lovable or similar no-code platforms to resolve backend bugs in an MVP app for a pilot research study. The focus is on ensuring participant privacy and data security. · ...

We seek a senior backend engineer to lead the design and implementation of our video pipeline and core backend using Firebase and GCP. · ...

We need an expert back-end developer to work on the back-end of a marketing app., MERN tech stack · Netlify/Digital Ocean, and Google Cloud/Firebase · Social media APIs. · ...