Full Stack Engineer (React/, MongoDB) - Up to 5000-6000/month

Singapore 1 months agoFull-time External
328.3k - 656.6k / yr
Client Introduction My client is a Southeast Asia–headquartered data & analytics platform powering decision intelligence for enterprises and public-sector programs. The company combines a proprietary data engine (with custom query capabilities) and LLM-driven analysis to turn complex, multi-source datasets into secure, actionable insight at speed. The platform operates on a token-based model and is evolving into an AI-native product (not a bolt-on). Flat hierarchy, hands-on leadership, and a hybrid setup (~2-3 days in office). Job Responsibilities Reporting to a manager (oversight by CTO), your role involves: Ship end-to-end features across React (front end) and (back end), working with MongoDB and Redis for performance and reliability. Build and consume RESTful APIs; write functional/integration tests; and partner with operations to diagnose and fix production issues. Take ownership of a complex, sensitive production system used in high-stakes contexts - design changes carefully, document thoroughly, and uphold security and reliability standards. Collaborate with product, design, and engineering to translate ideas into secure, user-centric features on a platform that ingests diverse data for LLM-powered insights. Contribute to go-to-market work around the proprietary data engine as a base layer for AI applications. Job Requirements At least 1 year experience (internships welcome). Strong JavaScript fundamentals (there will be a JS test). Practical exposure to React, , MongoDB; Redis experience is a plus. Comfort with REST APIs, Git, and Agile ways of working; ability to convert design mock-ups into working features. Bonus: Express, AWS, microservices, Docker/Kubernetes, and monitoring (Grafana/Prometheus/Datadog). Mindset: resourceful, curious, accountable, and clear in technical communication. Why You Should Join Them AI-native trajectory: Build on a platform where AI/LLMs are core, not an add-on-ideal for engineers who want to work at the intersection of data platforms and applied AI. Serious engineering, real impact: Inherit and improve a mission-critical system used in sensitive environments-learn reliability, security, and scale the right way. Own the data engine: Work on a proprietary database layer that other products and AI teams can build upon-shape both product and platformisation. Clear growth paths: As the system scales, grow into Engineering Lead/Manager, Solutions Architect, or Product Lead (small product team = visible impact and progression). Supportive, hands-on culture: Flat hierarchy, guidance from senior engineers, and a hybrid setup that balances focus time with in-person collaboration.