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# Founding Full Stack Engineer (£80K + Equity) at Klaris

- **Company:** Jack & Jill
- **Location:** London, UK
- **Experience:** Experienced
- **Salary:** £80,000.0
- **Contract:** Permanent contract
- **Skills:** Artificial Intelligence, Amazon Web Services, Cloud Engineering, Continuous Integration, Database Schema, DevOps, PostgreSQL, Node.Js, Software Product Management, Next.js, TypeScript, ReactJS, Large Language Models, Multi-Agent Systems, Containerization, AI Platforms, Kubernetes, Figma, Meditech, Docker
- **Published:** August 30, 2026
- **Apply:** https://www.collegerecruiter.com/job/2815443021-founding-full-stack-engineer-80k--equity-at-klaris

## About the Role

* 4+ years of professional experience with the TypeScript/React/Node.js stack, demonstrating the ability to design and implement successful, standalone products or high-scale features.
 * Proven "0-to-1" startup DNA with the high agency required to thrive in ambiguity, making independent architectural decisions without needing existing structure or oversight.
 * Technical expertise in modern DevOps practices, including containerization (Docker/Kubernetes), CI/CD pipeline management, and secure database schema design for sensitive regulated data.

## Description

Join as the first engineering hire to architect an AI platform automating complex MedTech regulatory compliance. You will transition the product from prototype to a scalable production system, working directly with a CTO (PhD in Multi-Agent Systems) to help medical device companies navigate audits and reach patients faster through intelligent documentation automation., * Founding-level impact with significant equity and the autonomy to establish the technical foundations, engineering standards, and hiring culture of a mission-driven startup.

 * Work on a non-wrapper AI product using proprietary datasets to solve a massive, high-stakes problem in a regulated industry with clear market pull and pilot traction.
 * High-growth environment backed by strategic investors including an NHS-affiliated VC, Antler UK, and Vento Ventures, offering a direct path to shaping a generational MedTech company.

What you will do:

 * Architect and build critical end-to-end components across the entire stack using Node.js, Next.js, TypeScript, and PostgreSQL while managing cloud infrastructure on AWS/GCP.
 * Collaborate directly with the CTO to integrate custom AI models and LLM endpoints into a secure, production-ready platform that identifies regulatory gaps and remediations.
 * Lead the development of intuitive user interfaces from Figma designs, ensuring high performance, responsiveness, and seamless state management for complex medical documentation workflows.


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