Senior Software Engineer

Duku AI; Greater London; On-site; GBP 125,000 - 150,000; Full time

Job summary

An innovative tech startup in Greater London is seeking a talented individual to join their team, focused on building autonomous agents for quality assurance. The role involves rapidly deploying features, engaging with users, and designing AI testers. The ideal candidate has experience with AI features in production and enjoys working in chaotic environments. This position offers the chance to influence the future of software quality, with a team dedicated to leveraging AI for fast and effective testing.

Qualifications

• Experience shipping AI features in production.
• Experience building products from 0 to 1.
• Ability to thrive in chaotic environments with high ownership.

Responsibilities

• Deploy features rapidly, learning from each iteration.
• Engage directly with users to influence product roadmap.
• Design AI agents to explore and learn in real time.
• Manage full tech stack from development to production.
• Conduct real experiments on AI models and pipelines.

Skills

Relentless drive

Startup experience

Fluency with AI/LLMs

Product obsession

Tools

Python

TypeScript

Cloud infrastructure

LangChain

Vector stores

Prompt engineering

Job description

QA slows the world down. Flaky tests kill trust, stall releases, and bleed engineering velocity.

Duku AI is ending that era.

We’re building autonomous agents that think like engineers : they run every critical user journey, catch failures before users do, and self-heal as the codebase evolves. Real AI teammates, not test scripts that break on impact.

We’re venture-backed and led by operators who’ve scaled Meta’s testing infrastructure, launched Uber’s global playbooks, and grew Deliveroo from zero to hypergrowth. We know what elite execution looks like and we’re hunting for one more builder to help us rewrite the rules of software quality.

What You’ll Do

• Ship fast, learn faster : We deploy daily, not monthly
• Talk to users, shape the roadmap : Sit in the trenches with founders on calls that define what we build
• Train AI agents: Design LLM-powered testers that explore, learn, and adapt in real time
• Own the stack : Python, TypeScript, cloud infra, from commit to production
• Turn prototypes into production : Run real experiments on models, embeddings, and retrieval pipelines.

What We’re Looking For

• Relentless drive: You execute fast, adapt faster
• Startup scar tissue : You’ve shipped product with no safety net
• Fluency with AI/LLMs : LangChain, vector stores, prompt engineering
• Product obsession : You care more about outcomes than outputs

Ideal Background

• Shipped AI features in prod
• Built something from 0 to 1
• Thrived in chaos with high ownership

Why This Matters

Software is accelerating. QA hasn’t kept up. Autonomous testing is inevitable, and we’re building it.

Five years from now, every high-velocity team will rely on AI agents like ours to ship faster, safer, and smarter.

Join now, and help make that future real, before someone else does.