Open to opportunities

Gabriel Mathieu

@gabrielmathieu

Message

I build scalable SaaS, healthcare, and AI-powered full-stack applications.

Belgium

Message

What I'm looking for

I'm looking to build scalable SaaS, healthcare, or AI-powered products end-to-end, improving performance, reliability, and user workflows with a collaborative remote team.

At Aha!, I built scalable product-management features used by more than 1 million people across roadmaps, ideas, and product-planning workflows. I developed production REST APIs and AI-assisted capabilities using OpenAI APIs and LangChain for recommendations, content generation, and workflow automation.

Previously at Supercast and LynxCare, I delivered end-to-end subscription, creator, healthcare, and clinical-data workflows using React, Next.js, Node.js, Python, FastAPI, PostgreSQL, Redis, and MongoDB.

I've improved performance and reliability through API optimization, caching, asynchronous processing, CI/CD, Docker, Kubernetes, automated testing, and distributed-service design. I enjoy collaborating with remote, cross-functional teams and have mentored 3+ engineers while contributing to system design and technical decisions.

Experience

Work history, roles, and key accomplishments

Senior Full Stack Engineer

Aha!

Nov 2023 - Jul 2026 (2 years 8 months)

Built and enhanced scalable product management features using React, Angular, and Node.js, supporting 1M+ users. Designed and developed scalable backend services with Python, FastAPI, and Node.js, delivering production-grade REST APIs. Optimized PostgreSQL data models and queries, containerized services with Docker, and deployed on Kubernetes. Engineered AI-assisted capabilities using OpenAI APIs