Senior Flutter Developer

Posted July 19, 2026

About this opportunity

Opportunity Overview

This is a part-time job for a Senior Flutter Developer. The job is remote and requires 25 hours of work per week for 3-4 months. The client is a startup that is developing a mobile application for STEM education. The application is designed for teens and young adults and combines learning paths, progression systems, and interactive problem-solving. The job is offered by Lemon.io, a marketplace that connects developers with startups in the US and Europe. The client is based in the Pacific Time zone, and the developer must have a 3-hour overlap with this timezone. The job is open to US-based candidates, but Lemon.io also has other positions available for developers from 75+ countries. The developer will work on a mobile application that aims to make STEM education more engaging and accessible. The application has a polished, gamified UX and is designed for teens and young adults.

Responsibilities

Develop a mobile application using Flutter
Work on a project that combines structured learning paths, progression systems, interactive problem-solving, and a strong sense of personality
Deliver a polished, gamified mobile UX
Work with Firebase
Ensure strong app architecture, state management, performance, and backend integration

Benefits

Remote work
Part-time job with 25 hours of work per week
Opportunity to work with a startup in the US or Europe

Requirements & Qualifications

4+ years of software development experience
5+ years of experience with Flutter
Experience shipping iOS and Android apps
Experience with Firebase
Strong understanding of app architecture, state management, performance, and backend integration
Ability to work through ambiguity and translate product ideas into real features
Interest in polished consumer products, interactive learning, or STEM-related applications
Strong technical skills
Clear and effective communication in English
Strong self-organizational skills
Reliability
Adaptability and flexibility

How to Apply

Review the job requirements and responsibilities to ensure you are a good fit.
Prepare your application, including your resume and a cover letter.
Click the Apply button below to submit your application.

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