Senior Full-stack Engineer; backend-leaning

Senior Full-Stack Engineer (Backend-Leaning)

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.

• 6 to 10 years of professional software engineering experience

• Strong Python and JavaScript/Type Script

• 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

• 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 Git Hub

• Help evolve the AI/LLM and knowledge-graph capabilities powering the platform

• 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

We strive to create an inspiring and growth-oriented environment where everyone feels valued. Our people come from diverse backgrounds across Latin America and partner with world-class companies to solve meaningful engineering problems. We invest in our team through continuous learning, coaching, and a culture that rewards curiosity, ownership, and collaboration.

What We Offer:

• Long-term projects

• 100% remote work

• Payment in USD

• Paid Time Off (PTO)

• Work-from-home & training reimbursement

• English lessons

• Technical training

• Career coaching