Founding Engineer - London Area

+Job summary · This is not a typical engineering role. · You will build adaptive AI security systems, · design and ship security infrastructure that learns and evolves alongside the AI agents it protects,+QualificationsHands-on experience building production backends · Strong gra ...

We are seeking a Founding Engineer (CTO-track) to take end-to-end ownership of building and launching our platform. · ...

A newly formed company that graduated Y-Combinator is looking to hire a Founding Engineer for their London team. · ...

We are looking for a Founding Engineer to help build the core system from the ground up. · ...

A pair of second-time founders who have already built and exited successful ventures are assembling a new elite engineering team for their next AI startup. · ...

Join a founding team with a proven record of building successful start-ups, this is a chance to be part of something from the ground up. · 5+ years of professional Software Engineering experience · Proficiency in programming languages such as Python, C#, TypeScript, Go or Java · ...

We're building the AI-native Blackstone - a private equity firm that uses AI to analyze 100% of investment opportunities, · → AI-powered deal origination (SEC EDGAR, Companies House, CourtListener) · Automated underwriting with institutional-grade distress ratios · ...

This isn't another 'early-stage' role with duct-taped systems and vague vision. This team just raised $20M and is assembling a founding engineering group with one rule: only exceptional people. · ...

We are currently preparing for a Seed funding round and are looking for a Founding Engineer to join the company at an early stage and help shape the technical and product foundations of Cortex Research. · As a Founding Engineer, you will work closely with the founding team and ta ...

Job summary · Join as employee #4 with genuine founding engineer ownership working on cutting-edge AI: agent reasoning, real-time voice processing, memory systems. · Qualifications5+ years of software engineering experience · Strong backend fundamentals – Python preferred but not ...

We're working with an early-stage AI company building a category defining product and looking for a Founding Engineer to help shape both the technology and the culture from the ground up. · This is a hands-on role for someone who has shipped real products at pace , thrives in amb ...

We are looking for a founding engineer to build AI agents that save people time. · Building the core product end-to-end across backend frontend and AI systems · Shipping fast owning production and iterating directly with users · Working closely with founders on product direction ...

Founding engineer required for an early-stage defence technology start-up building mission-critical systems with real-world impact. · ...

A pre-seed founder-led startup seeks a Founding Engineer to build an AI layer for fintech. This opportunity targets a $100B market shift. · ...

Pivot is building Evidence Intelligence – an AI-native intelligent operating system for law. · Ingest unstructured multimodal evidence (documents email chat logs images) modelling relationships between entities timelines issues. · Deterministic agent flows DAG-style workflows orc ...

An exciting opportunity for a Founding Engineer has arisen with a rapidly growing technology company focused on transforming how advanced industries deploy and scale AI systems. · ...

Ara is building an operating system that enables humanoid robots to work on construction sites. I'm looking for a technical co-founder or founding engineer with strong hands-on experience in robotics who wants to work on hard, real-world systems. · ...

We're hiring for a seed-stage SaaS startup backed by Balderton that's using AI to fundamentally redefine its product. · ...

+ Up to £150,000 base + 1% equity · + High impact & ownership over core product. · + Work closely with a high calibre founding team. · A Lead / Staff level Software engineer with strong backend engineering skills, ideally in Python. · ...

A founding engineer within the core platform team with significant influence over architecture tooling and roadmap. Broad ownership across systems and services direct exposure to enterprise-scale customers and real-world security use cases opportunity to shape the product from th ...