Senior Full Stack Developer
Location: Fully Remote (Preferably Poland or CET-compatible time zones)
Salary: commensurate with experience + equity options]
Type: Full-time
About the Role We are building a next-generation, ontology-driven AI platform for the healthcare sector. An intelligent system that unifies fragmented data into a single semantic layer. This ontology forms the backbone of our agent architecture, enabling reasoning, context-aware automation, and structured decision support across some complex workflows.Although still in stealth mode, the product sits at the intersection of LLMs, knowledge graphs, and real-time workflow automation. You will help shape and build the core engine that powers this system.We are searching for a Senior Full Stack Developer who can take ownership of major development areas, both architecturally and hands-on. You’ll work alongside the small technical founding team during initial design and prototyping, then operate autonomously to build, refine, and scale mission-critical features. This is a rare opportunity to help architect a platform that blends AI, structured knowledge, and modern cloud technologies from the ground up.
What You Will Work On
• Develop core components of our AI-powered SaaS platform using TypeScript across the stack
• Build both frontend and backend services, with a strong focus on scalability, maintainability, and performance
• Integrate AI models and LLM-based pipelines such as LangChain or RAG into product workflows • Design and manage cloud infrastructure using AWS or GCP with Infrastructure as Code tools such as Terraform
• Implement secure data flows involving SQL and NoSQL databases
• Deploy frontend applications to Vercel, managing environments, configuration, and performance
• Work closely with founders on technical direction, but operate independently day to day
• Ensure code quality using modern patterns, testing strategies, and best practices
Core TechnologiesFrontend
• React and Next.js with TypeScript
• TanStack Query (useQuery), modern hooks, state management techniques
• Deployment and environment management on VercelBackend
• Node.js with TypeScript • Express.js or similar API frameworks
• SQL (PostgreSQL) and NoSQL (MongoDB) • Infrastructure deployment on AWS or GCP
• Infrastructure as Code (Terraform or similar)AI Integration
• Experience interfacing with LLMs and related tooling
• LangChain, RAG architectures, or similar frameworks
• Conceptual understanding of vector databases and prompt engineering
Nice to Have
• Python for experimentation or prototyping • Experience with secure data handling in regulated industries ● Familiarity with ontologies, taxonomies, or knowledge graph concepts (RDF, OWL, SHACL, schema design, or semantic data modelling)
● Experience building systems that consume structured semantic layers or graph-based APIs
● Exposure to domain-specific data modelling or standards-driven architectures
What We Are Looking For
• Minimum 5 years experience as a full stack developer at senior level or above
• Strong expertise in TypeScript, React, and Next.js • Solid experience with both SQL and NoSQL databases • Proven capability in deploying and managing cloud infrastructure
• Experience consuming or building AI-powered services
• Fluent English, both written and spoken • Comfortable working independently with minimal supervision • Ability to take ownership of large development areas
What We Offer
• Competitive salary
• Equity options available
• Fully remote arrangement with some flexibility in hours (minimum working overlap with UK time)
• High autonomy, technically challenging work, and opportunities for leadership
• The chance to work on a meaningful product that improves quality of care for the elderlyIf you want to help build an AI-driven platform that makes a real difference and enjoy taking ownership of technical challenges, we would love to hear from you.