Full-Stack JavaScript Engineer

Description

Architect, build, and maintain highly scalable full-stack features using Node.js, React, and TypeScript.

Optimize complex database queries and schema designs (SQL/NoSQL) to handle massive transaction volumes.

Secure and scale our RESTful and WebSocket APIs to ensure instantaneous synchronization between physical POS softwares - both cloud and server-based - and our cloud infrastructure.

Proactively identify and eliminate technical debt, enforcing strict linting, type safety, and comprehensive testing frameworks.

Work as a direct independent contractor, collaborating synchronously with our core product and engineering leadership.

Requirements

5+ years of verified professional experience running production-grade full-stack JavaScript/TypeScript applications.

Production experience dealing with asynchronous programming challenges, race conditions, memory management, and event-driven architectures in Node.js.

Deep knowledge of React state management, rendering optimization, and building accessible, modular UI components.

Strong communication skills in English—you must be comfortable thinking out loud, defending your architectural choices, and collaborating live via video calls.

Experience with cloud infrastructure (AWS/GCP), CI/CD pipelines, and Dockerized environments is a major plus.

Benefits

Top-Market USD Compensation: Competitively calibrated based on your geographic location and senior expertise.

Direct Contractor Engagement: Clean, streamlined contracting and monthly invoicing.

True Autonomy: No micromanagement. You own your modules, write clean code, and execute.

Impact: You will be working directly on core systems that impact thousands of real-world merchant locations daily.

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