Senior Full-Stack Developer (React Native & Node.js) | Short-Term B2B Freelance @ STX Next

Are you a battle-tested developer who thrives at the intersection of robust backend logic and seamless frontend experiences? We are looking for an experienced full-stack expert for a fast-paced, short-term assignment to act as a bridge between technology and business.

In this role, you will jump straight into an active codebase, advising clients and shaping technical roadmaps while rapidly delivering high-quality mobile features.

Must have:

• Senior-level Expertise: Deep, hands-on production experience with React Native (including the Expo framework) and the modern Node.js ecosystem.
• Backend Mastery: Solid experience with Firebase services, core Node.js fundamentals, and relational databases (PostgreSQL, MySQL).
• Targeted Library Mastery: You don't just know React Native; you have deep, practical experience with our exact ecosystem. You are fluent in TanStack Query and Zustand for state/data, react-hook-form, Reanimated for UI, Typesense for search, branch.io for deep linking, and RevenueCat for monetisation.
• The \"Consultant\" Mindset: Excellent English communication skills (min. B2/C1+) to efficiently articulate technical decisions to non-technical stakeholders and peers, ensuring minimal management overhead.

Nice to have:

• Practical experience with AI-powered development tools (e.g., Cursor, GitHub Copilot) to enhance coding efficiency.
• Familiarity with targeted libraries for monetisation (e.g., RevenueCat) and advanced search functionalities (e.g., Typesense).
• Experience with Cloud & DevOps workflows (AWS, Docker, CI/CD).

Are you a battle-tested developer who thrives at the intersection of robust backend logic and seamless frontend experiences? We are looking for an experienced full-stack expert for a fast-paced, short-term assignment to act as a bridge between technology and business.

In this role, you will jump straight into an active codebase, advising clients and shaping technical roadmaps while rapidly delivering high-quality mobile features.

,(Mobile & Backend Ownership: Build, refine, and optimise mobile features using React Native (Expo) and TypeScript, while ensuring scalable backend services within the Node.js and Firebase ecosystem., Architecture & Integrations: Implement complex mobile UI animations, in-app purchases, and third-party API integrations (such as DeepL and SendGrid)., Consulting & Communication: Translate complex technical requirements into business value, collaborate directly with stakeholders, and advise on key technical decisions., Quality & Analytics: Ensure smooth application performance and error tracking using tools like Sentry and PostHog, while establishing shared standards and raising the bar for the entire team.) Requirements: Node.js