HelmGuard — Founding Product Engineer
On-site · London (King's Cross)Top-decile London pay + EMI equityEF / Sequoia Scout backed
Seed-stage AI security startup. Founders ex-Palantir, Oxford, Stanford, ETH. You own the whole product surface — UI, API, and the AI-agent features between.
Apply direct →6+ yrs small fast team, TS preferreddecided/built/shipped track recordClaude Code daily
Shipped-and-used work over years; daily AI-coding-tool use expected, not a bonus.

Dominus — Senior Software Engineer
Hybrid · London£75K–£110K~£3bn portfolio, first eng seat
AI-driven real estate developer. First proper engineering hire — take internal MVPs to production and weave LLMs/agents into real business processes.
Apply direct →4–6 yrs production, ideally startupfull-stack (SQL, backend, frontend)LLMs/agents in real workflows
First proper engineering hire — high autonomy, AI woven into real processes, not experiments.
Model ML — Senior Backend Engineer
On-site · London£140K–£170K + equity~$75M raised · YC + top-tier VCs
AI-native workspace for investment banking, PE, consultancies and asset managers — "Cursor for finance." Repeat-YC-exit founders; New York, London and Hong Kong.
Apply direct →7+ yrs backendexpert Python + FastAPIPostgreSQL, Azure/AWS/GCP
Reports to the founders; 7+ years is the bar; financial data at scale a strong plus.
Model ML — Full-Stack Engineer
On-site · London£100K–£175K + equitySecond role, same company
Same company as above, two open roles. Own features end to end across the stack of an AI-native product live at major financial institutions.
Apply direct →5+ yrsReact/Next.js + PythonDocker/K8s, CI/CD, Redis
Product-minded full-stackers who ship; repeat-YC-exit founders.
Looking for something more frontend? If you've worked at a design-led, product-first company before, this next one's for you — different location, same bundle.
Wordware — Senior Frontend Developer
Not LondonOn-site · San Francisco$180K–$240K + equity$30M seed · Spark, Felicis, YC
AI-native team building a personal AI assistant for knowledge workers — "Cursor for knowledge work." 12–14 people. Own the whole frontend surface.
Apply direct →4+ yrs frontendportfolio of shipped production appsUS work auth or O-1 eligible
Portfolio and shipped craft over years. For someone with real design sense tired of waiting on a design queue.