Full Stack Engineer at Cambridge-based agentic AI platform

Join an elite founding team in Cambridge as their first engineering hire to build a platform that redefines how enterprises implement AI. Founded by Alexa's former speech lead and the Chair of the UK AI Council, this startup is moving from prototype to production SaaS. You'll own the technical foundation, earn a significant equity stake, and build sophisticated interfaces for agentic AI workflows. If you have 3-8 years of full-stack experience and want to shape the future of human-centered AI, this is a rare opportunity to join at the ground floor.

Overview

Role overview

As the first full-time engineering hire, you will transform a working prototype into a production-grade SaaS for enterprise customers. You will build secure backends for sensitive data and craft intuitive interfaces for complex AI outputs. Working alongside a veteran founding team, you will shape the technical foundation of a platform that scales human insight.

Company

Lichenai

Cambridge-based agentic AI platform founded by Alexa's former speech lead and the Chair of the UK Government AI Council

Responsibilities

What you will do

Take a functional AI prototype to production-grade, establishing the deployment pipelines, monitoring, and observability required for enterprise reliability.
Design and own the full-stack UI/UX, creating interfaces that make high-volume AI-generated insights legible and actionable for non-technical users.
Implement secure data pipelines and architecture to meet rigorous enterprise security standards including GDPR and ISO 27001/42001 compliance.

Candidate profile

Who this is a fit for

3-8 years of experience shipping production web applications, with strong proficiency in React/TypeScript and Python/FastAPI.
Proven ability to design database structures and manage cloud infrastructure, preferably within the AWS ecosystem.
A product-focused engineer who has thrived in small startup environments and is comfortable making independent technical decisions across the entire stack.

What makes it remarkable

Why this role is remarkable

Join as the first full-time engineer with significant equity and a clear path to technical leadership as the founding team scales.
Work with an elite founding team including the CTO who led Alexa's NLU at Amazon and the co-founder of CognitionX.
Build a platform that uses voice AI and agentic workflows to enhance human expertise rather than replacing it, solving a critical bottleneck in enterprise AI adoption.

Jack & Jill

How Jack & Jill work together

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