Senior Full-stack Engineer (backend-leaning)

South Geeks•Wyoming, NY

1d•Remote

About The Position

At South Geeks, we connect top LATAM engineering talent with innovative companies building impactful products worldwide. We focus on long-term partnerships, strong technical environments, and creating spaces where professionals can grow, contribute, and thrive. Our client is a health tech startup redefining medical device innovation with an AI platform that automates research, documentation, and workflows end-to-end, helping deliver lifesaving devices sooner. The product combines customer onboarding flows, a Neo4j knowledge graph and an AI/LLM-powered recommendation and scoring system, with applicability in regulated environments such as medical device, pharma, and parametric documentation. We are looking for a Senior Full-Stack Engineer (backend-leaning) with 6 to 10 years of experience who can translate conceptual product ideas into solid, shippable code. You will work directly with the Product team on daily scoping and end-of-day mini demos and collaborate with the fractional CTO on architectural decisions. Roughly 70% of your time will go to new feature development and enhancements and the remaining 30% to resolving customer-reported bugs. You will have real influence on technical decisions and are expected to bring informed opinions on trade-offs.

Requirements

6 to 10 years of professional software engineering experience
Strong Python and JavaScript/TypeScript
React on the frontend
Neo4j (graph database) experience
GraphQL
Production-level AI/LLM integration experience (beyond basic prompting)
Experience working with or building MCP servers
100% Eastern Time overlap during business hours
Excellent written and spoken English, strong communication skills

Nice To Haves

FastAPI or similar Python web frameworks
Experience in regulated domains (medical device, pharma, health-tech, life sciences)
Familiarity with vector databases, RAG, or agentic AI patterns
Exposure to customer onboarding or document/workflow automation products

Responsibilities

Build new features and enhance existing ones across backend and frontend
Collaborate daily with the product team to scope work and demo progress end-of-day
Contribute to architectural and design decisions, with sign-off from leadership on major calls
Resolve customer-reported bugs tracked in GitHub
Help evolve the AI/LLM and knowledge-graph capabilities powering the platform