Senior Product Engineer — AI-Driven Full‑Stack Innovator

Caribou; City Of London; On-site; GBP 100,000 - 125,000; Full time

Job summary

A tax technology startup in London is seeking a Senior Product Engineer to lead full-stack development of new product features. You will engage in product discovery, leverage AI advancements, and ensure high-quality code delivery. The ideal candidate has over 5 years of experience in a web-app startup environment and strong skills in modern frontend and backend technologies. This role provides a unique opportunity to shape innovative tax solutions while working collaboratively with cross-functional teams.

Benefits

Competitive salary

Generous EMI options

100% book subsidy

Pension

Health insurance

Custom WFH equipment setup

Qualifications

• 5+ years of experience as a full-stack or product-focused engineer in a web-app startup environment.
• Strong technical skills across modern frontend frameworks and backend development.
• Able to lead in product discovery and user interviews, shaping and planning.

Responsibilities

• Lead full-stack development of new product features from problem statement to production.
• Participate directly in product discovery by analysing customer feedback and prioritising features.
• Leverage AI/LLMs to enhance development and improve product features.

Skills

Full-stack development

Product discovery

Modern frontend frameworks (React/TypeScript)

Backend development (Go, Node, Python)

AI/LLMs integration

Communication skills

Collaboration skills

Job description

A tax technology startup in London is seeking a Senior Product Engineer to lead full-stack development of new product features. You will engage in product discovery, leverage AI advancements, and ensure high-quality code delivery. The ideal candidate has over 5 years of experience in a web-app startup environment and strong skills in modern frontend and backend technologies. This role provides a unique opportunity to shape innovative tax solutions while working collaboratively with cross-functional teams.