n8n Automation Developer for Telegram Mini App Backend

I have a mobile app that is already built via vibecoding (UI, flows, logic all exist and work). Need a developer who is comfortable working on top of vibecoded apps to finish the product properly. · ...

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 · ...

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. · ...

THERAWORLD – Mobile App Developer (iOS/Android) + Backend (AI Voice / Real-time / Production) · I'm building THERAWORLD, a premium emotional wellness app (not a basic utility app). · This needs to feel cinematic, calm, premium, and polished — with strong UX flow, voice interactio ...

I'm looking for a developer to bring my app idea to life. The app helps people organize meetups with friends and also connect/schedule meetings with new people. · ...

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

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

Backend developer needed to help build web app with experience in backend development and integration with existing frontend. · ...

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

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 · ...

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. ...

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 ...

We are seeking a skilled backend developer to set up a secure backend for our Flutter app, · focusing on AI integration and private photo storage.Flutter · Mobile App Development · User Authentication · ...

We are seeking a skilled backend developer to set up a secure backend for our Flutter app focusing on AI integration and private photo storage. · ...

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. · ...

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