Full Stack Engineer

Wave Group; Greater London; Hybrid; GBP 80,000 - 120,000; Full time

Job summary

Wave Group in London is seeking a Senior Full Stack Engineer to own features from user discovery to production delivery, focusing on TypeScript, React, and AI-powered functionality. You'll work with a small team and founders to shape the product direction.

The role demands hands-on experience across a TS stack, backend depth, and prior startup/scale-up exposure, plus the ability to contribute to live data workflows and secure vetting requirements.

Qualifications

• 4 to 9 years of production TS/React experience.
• Strong backend depth in Node (NestJS a plus).
• Startup/scale-up experience shaping product scope.
• Hands-on experience with LLMs or AI systems.
• Ability to obtain UK security vetting and right to work.

Responsibilities

• Own features end to end, from user input to production shipping.
• Build LLM-powered and real-time features, including voice and live data workflows.
• Work across a modern TS stack (React, Next.js, Node, NestJS) backed by Postgres and AWS.
• Collaborate directly with founders, influencing technical and product direction.

Skills

TypeScript

React

Next.js

Node

NestJS

LLMs / AI systems

Tools

PostgreSQL

AWS

Job description

Senior Full Stack Engineer (TypeScript,AI/LLM) | London | £80,000 - £120,000] | Hybrid, 3 days onsite

We\'re partnering with an AI-native software company building mission-critical tools for frontline public sector teams. Their users work in high-pressure environments where slow, fragmented systems cost time that matters. They\'re replacing that with a single, intelligent platform built around how people actually work.

They\'re now hiring a Senior Full Stack Engineer to join as an early member of a small engineering team, someone who wants real ownership of the product from day one rather than a backlog handed down to them.

What you\'ll be doing

• Owning features end to end, from talking to users and forming your own view on what to build through to shipping in production


• Building LLM-powered and real-time features that go beyond simple prompting, including voice and live data workflows


• Building across a modern TypeScript stack (React, Next.js, Node, NestJS) backed by Postgres and AWS


• Working directly with the founders, with real influence over technical and product direction

What they\'re looking for

• 4 to 9 years of experience, with strong, production-scale TypeScript and React


• Solid back-end depth in Node (NestJS a plus), not just front-end


• Startup or scale-up experience where you\'ve shaped what got built, not just executed a spec


• Hands‑on experience building with LLMs or AI systems, not just using AI tools day to day


• Someone who thinks in user problems first and technical solutions second


• Able to obtain UK security vetting (right to work and a clean UK address history required)

Why this one\'s worth a look

• A small team of generalists who move fast, ship often and keep a high bar


• Real early-stage ownership in a company with a clear, meaningful mission


• Products used by people doing genuinely important work every day