Software Engineer - Machine Learning

Duku AI; Greater London; On-site; GBP 100,000 - 125,000; Full time

Job summary

A pioneering tech startup in London is seeking a driven individual to develop autonomous AI testing agents. You will deploy software rapidly, train AI agents, and own the tech stack from development to production. Ideal candidates have a startup background, a relentless drive for success, and fluency with AI/LLMs. Join now to help reshape the future of software quality with cutting-edge technology.

Qualifications

• You execute fast and adapt faster.
• Experience shipping product in a startup.
• Familiarity with LangChain, vector stores, and prompt engineering.

Responsibilities

• Deploy software daily and iterate rapidly.
• Engage users to help shape the product roadmap.
• Train AI agents to learn and adapt in real-time.
• Manage the entire tech stack from commit to production.
• Transform prototypes into scalable production solutions.

Skills

Relentless drive

Startup scar tissue

Fluency with AI/LLMs

Product obsession

Tools

Python

TypeScript

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

There’s no perfect pedigree. We hire for mindset, not credentials. That said, you might have:

• 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.