Full-Stack Developer (Front-End Focus) at Qompyl in Argentina, AR

About Qompyl

Qompyl is redefining trading by focusing on a hands-on, visual, and gamified strategy builder that empowers traders to create and refine their strategies with ease. Our core service is a mobile-first platform, emphasizing simplicity, accessibility, and real-time interaction.

We are building an interactive fintech product where performance, clean UX, and seamless integration between front-end and back-end systems are critical.

Role Overview

We are seeking a Full-Stack Developer with a strong front-end orientation, particularly in React Native, to help build and scale Qompyl’s mobile-first trading platform.

While this is a full-stack role, the primary focus will be on mobile front-end development, user experience, and real-time data interaction. The ideal candidate is comfortable contributing to back-end systems (Python/FastAPI) but thrives in building intuitive, high-performance mobile interfaces.

This role is ideal for a front-end-leaning full-stack developer who enjoys building mobile experiences and can confidently collaborate on back-end systems.

Key Responsibilities

Front-End (Primary Focus)

• Develop and maintain mobile applications using React Native.
• Ensure high performance, responsiveness, and smooth UX across iOS and Android.
• Integrate RESTful APIs and WebSocket services for real-time financial data updates.
• Implement state management solutions (Redux, Zustand, Context API, etc.).
• Build reusable UI components and contribute to scalable front-end architecture.
• Optimize rendering of live market data and strategy simulations.

Back-End (Secondary Contribution)

• Contribute to back-end systems using Python, FastAPI, SQLAlchemy, and PostgreSQL.
• Support API design and integration between front-end and back-end services.
• Collaborate on performance optimization for real-time data handling.
• Participate in system architecture discussions.

General Responsibilities

• Maintain clean code standards and version control using Git/GitHub.
• Collaborate in sprint planning and delivery using Azure DevOps.
• Contribute to architectural decisions for scalability and maintainability.
• Foster strong communication and a collaborative team culture.

Requirements

• Strong experience with React Native in production environments.
• Solid experience in JavaScript/TypeScript.
• Experience integrating REST APIs and real-time WebSocket services.
• Experience building or contributing to mobile apps (iOS & Android).
• Backend experience with Python and FastAPI (or strong willingness to work on backend components).
• Experience working with relational databases (PostgreSQL preferred).
• Understanding of responsive and mobile-first design principles.
• Strong communication skills in a remote startup environment.

Nice to Have

• Experience with Flutter.
• Experience in fintech or real-time data applications.
• Familiarity with financial data visualization libraries.
• Experience in early-stage startups.
• Docker and CI/CD familiarity.

💡 Please Note - Equity-Only Structure

This is a part-time, equity-only role, suitable as a side engagement alongside a primary job or consulting work.

The position will transition to compensated status after the MVP launch and once funding or sustainable revenue is secured.

If you're excited about joining an early-stage mission-driven startup and helping build a next-generation trading platform, we’d love to hear from you.