Pre-Seed to Series A · UK Startups

Early-stage software engineering jobs with
rising UK startups

Showing 183 jobs
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Perceptic logo

Perceptic

Senior Fullstack Engineer

TypeScript, React, Java, Python

Perceptic builds the connective tissue that makes Al usable in drug discovery. We turn the best models and tools into thoughtful, reliable systems - designed to...

seed · $12MLondonHybridAI, Drug Discovery
Round Treasury logo
Can Sponsor

Round Treasury

Senior Product Engineer

Node.js, TypeScript, React, Next.js

At Round, we’re building the first truly autonomous digital worker for finance and operations. Not another CFO co-pilot - a real employee that thinks, acts, and...

seed · $6MLondonHybridFintech
Conduct logo
Can Sponsor

Conduct

Backend Engineer

Kotlin

Conduct’s mission is to make IT the innovation powerhouse of every company. Our agentic AI delivers an in-depth understanding of legacy enterprise software. For...

series-a · $60MLondonOnsiteEnterprise AI, AI Agents
Conduct logo
Can Sponsor

Conduct

Product Engineer

Kotlin, React, Vite

Conduct’s mission is to make IT the innovation powerhouse of every company. Our agentic AI delivers an in-depth understanding of legacy enterprise software. For...

series-a · $60MLondonOnsiteEnterprise AI, AI Agents
Perceptic logo

Perceptic

Senior Design Engineer

TypeScript, React

Perceptic builds the connective tissue that makes Al usable in drug discovery. We turn the best models and tools into thoughtful, reliable systems - designed to...

seed · $12MLondonHybridAI, Drug Discovery
Clove logo
Unicorn Founder

Clove

Product Engineer

Go, React

Building the financial institution of the future, to make money make sense.

seed · $14MLondonHybridFintech
Elyos AI logo
Female Founder

Elyos AI

Staff Engineer

Python, TypeScript

Elyos AI is the first totally autonomous customer service agent for trades and field services.

series-a · $16M£150k-£250k + equityLondonOnsiteAI Agents, AI
Perceptic logo

Perceptic

Lead DevOps Engineer

Kubernetes, AWS

Perceptic builds the connective tissue that makes Al usable in drug discovery. We turn the best models and tools into thoughtful, reliable systems - designed to...

seed · $12MLondonHybridAI, Drug Discovery
Lupa logo

Lupa

Senior Software Engineer

Node.js, TypeScript, React, React Native

Lupa redefines veterinary care with the world's first AI-Powered Veterinary Operating System for veterinary enterprises. Powered by AI we optimize operational e...

series-a · $20M£80k-£100k + equityLondonHybridAI, Pets
Riplo logo

Riplo

Founding Engineer (Full Stack)

Python, TypeScript, Next.js

AI-native diligence and portfolio work for PE funds. Proprietary software, five-day first view, audit-grade by default. We work with leading PE funds on bespok...

pre-seed · $3.1MLondonHybridAI, AI Agents
Round Treasury logo
Can Sponsor

Round Treasury

Product Engineer

Node.js, TypeScript, React, Next.js

At Round, we’re building the first truly autonomous digital worker for finance and operations. Not another CFO co-pilot - a real employee that thinks, acts, and...

seed · $6MLondonHybridFintech
Deliverance.ai logo

Deliverance.ai

Senior Engineer - Knowledge Architecture & RAG

Stack not specified

The operating system for governed enterprise AI. Your data. Your environment. Your control. Deliverance AI runs agents, governs runtime behaviour, and routes wo...

seedRemote - UK, EuropeEnterprise AI, AI
Adclear logo

Adclear

Senior Backend Engineer

TypeScript, Python

The AI FinProm compliance platform behind the UK’s top finance brands

seed · £2.1M£75k-£110k + equityLondonHybridFintech
Deliverance.ai logo

Deliverance.ai

Staff Software Engineer - Agent Runtime

Stack not specified

The operating system for governed enterprise AI. Your data. Your environment. Your control. Deliverance AI runs agents, governs runtime behaviour, and routes wo...

seedRemote - UK, EuropeEnterprise AI, AI
Trigger.dev logo
Open Source

Trigger.dev

Senior Backend Engineer

Go, Node.js, TypeScript

Trigger.dev is the platform for building AI workflows in TypeScript. Long-running tasks with retries, queues, observability, and elastic scaling.

series-a · $16MRemote - UK, EuropeAI, Developer Tools
Deliverance.ai logo

Deliverance.ai

Senior Engineer - SmartRouter & Inference Cost

Stack not specified

The operating system for governed enterprise AI. Your data. Your environment. Your control. Deliverance AI runs agents, governs runtime behaviour, and routes wo...

seedRemote - UK, EuropeEnterprise AI, AI
HelmGuard AI logo

HelmGuard AI

Founding Product Engineer

TypeScript, Node.js, React

HelmGuard is the AI Risk Operating System: a unified platform through which enterprises deliver governance, risk, and compliance outcomes at machine speed. Our...

seedLondonOnsiteAI Agents, AI Governance
Plain logo

Plain

Senior Product Engineer

Node.js, TypeScript

Plain is the fastest AI support platform ever built, backed by a world-class API. Start fast. Scale fearlessly.

series-a · $25M£90-£140k + equityRemote - UK, Europe, LondonHybridCustomer Support, AI Agents
Substrate Bio logo

Substrate Bio

Founding Software Engineer

Python

Substrate is building a network of fully autonomous wet labs, cloud-based data production facilities for AI biology, integrated with foundation models to become...

stealthLondonHybridAI, Biotech
Geordie AI logo

Geordie AI

Software Engineer

Java, Python, Go, Rust

AI Agents promise transformative benefits but effective adoption is impossible without the right controls, and existing tools can’t keep pace with autonomous be...

series-a · $30MRemote - UK, LondonHybridAI Governance, AI Agents