Full-Stack Developer
Full Time
Hybrid (London)
The Full-Stack Developer will play a central role in building and shaping the technical backbone of our fast-moving AI startup, taking ownership of features from initial concept through to production deployment. This is not a narrow execution role. It is a position of ownership, trust, and technical visibility.
You will work closely with leadership and our researchers to translate real-world needs into well-architected systems, acting as a hands-on builder internally and a thoughtful technical voice across the product lifecycle.
Core Responsibilities
Design, build, and maintain full-stack features across frontend and backend systems.
Develop responsive, user-facing interfaces using React and TypeScript.
Build and scale backend services in Python with FastAPI.
Architect and manage data layers across PostgreSQL (RDS) and DynamoDB.
Deploy and operate cloud infrastructure on AWS, including Lambda, API Gateway, S3, Step Functions, Athena, Docker/ECR, and SAM/CloudFormation.
Own features end-to-end—from customer requirements through system architecture to implementation and iteration.
Integrate LLM APIs (OpenAI, Anthropic) into production systems, including tool-calling, prompt engineering, and structured outputs.
Key Requirements
Strong proficiency in React and TypeScript on the frontend
Strong proficiency in Python and FastAPI on the backend
Hands-on experience with PostgreSQL and DynamoDB
Solid working knowledge of AWS services (Lambda, API Gateway, S3, Step Functions, Athena, Docker/ECR, SAM/CloudFormation, and more)
Experience with end-to-end development, from customer demands to system architecture and implementation
Proficiency with AI coding assistants (Claude Code, Cursor, GitHub Copilot, or similar)
Ability to leverage LLMs for rapid prototyping, debugging, and code generation
Strong sense of ownership and accountability; a team player who takes initiative
Bonus Points
Previous experience building production systems in startups or fast-paced, resource-constrained environments
Experience integrating LLM APIs into customer-facing products at scale
Comfort working across time zones and collaborating with external stakeholders
If you're looking for a full-time role where your work truly matters and where you can grow alongside a mission-driven team, we'd love to hear from you.
To apply please send your cv to admin@innohives.com.