Founding Engineer Full Stack - 4,941+ job offers

Place.

Imagine being THE engineer who takes a live, revenue-generating product out of a venture studio and makes it the company's own. The first core internal technology hire. Real ownership, not a job title dressed up as one. A regulated investment platform with a launched product, paying customers and re

Oho Group

£8,333 - £12,500 /month

Founding Product Engineer – DeepTech Startup Series A | £25M+ Raised | Complex Engineering Challenges | London | 5 Days Onsite We’re partnered with one of the most technically ambitious DeepTech startups in Europe — a rapidly scaling Series A company building products that tackle genuinely difficult

Innerworks

We're Hiring! We’re hiring a Founding Frontend Engineer. You will be our first in-house Frontend Engineer, responsible for developing, maintaining, and scaling our user portal - the first thing customer’s see when engaging with our product. You’ll also be crafting the principles and values we uphold

Oho Group

£4,167 - £16,667 /month

Founding AI / Software Engineer London | Hybrid | Exceptional Compensation + Equity An AI manufacturing startup with over $50M Series A funding is looking to hire exceptional Founding Engineers to help build the next generation of intelligent industrial technology. They are assembling a world-class

SeeMe Index

SeeMe Index - Founding Engineer Remote (US/EU-based) Salary: ~$150K + Equity About SeeMe Index SeeMe Index is an early-stage AI startup building an industry-first SaaS platform to measure inclusivity across marketing, products and overall brand presence. We combine computer vision (Open-source model

Datahead

Founding AI Engineer Full-Time | £150-160k + Equity Hybrid Working - London, England Our client is an early-stage startup building ground-breaking AI-powered tools to revolutionise Web3 development. Their platform empowers developers to create and deploy blockchain applications with unprecedented sp

Quantum Envelope

Methane is the fastest way we have to slow warming this decade, and the world is finally getting serious about measuring it. Quantum Envelope is building the layer that makes those measurements trustworthy, and we are looking for a data engineer to build it with us from the start. What you would bui

Plan:it

£6,667 - £10,000 /month

Role : Founding Product Engineer Tech : TypeScript, React, Node.js, Next.js & a smidge of Python (no exp. needed) Salary : Up to ~£120k + founding equity Location : Central London (flexible hybrid) Engineering workforce planning is broken. There's never really been a solution. Spreadsheets passe

VARA METRICS

Hybrid (London) · Open to contract or permanent We're hiring a hands-on Full-Stack Engineer to take a live MVP already in customer hands and evolve it into a robust, market-ready product. This is not a greenfield build, and not a big-team scale role. It's the 0 → 1.5 phase—where the product works, b

Oscar Associates Limited

€50,000 - €70,000 /year

Requirements Must have: - We are looking for several years of experience in software engineering, data engineering, or AI engineering roles. - We require a strong academic background in Computer Science, Engineering, Mathematics, or a similar discipline. - We value experience in a product-led techno

Briefcase

Company Description Accounting is a $700B+ industry still run on manual processes and human judgement. At Briefcase, we're building the leading AI-native platform to replace it; a fleet of 35+ AI agents running in production today, automating what used to require entire teams. Humans stay in the loo

Share

About Share Share is a venture-backed internet infrastructure network building Africa’s backbone. The company aggregates underutilized telecom infrastructure, fiber, subsea cables, and data centers, and provides ISPs with scalable access to bandwidth without traditional upfront costs. Through an ope

Oho Group

£4,167 - £16,667 /month

Founding Product Engineer – Applied AI Building AI for an Industry Ready to Be Rebuilt | London | Series A | 5 Days Onsite Most industries have already been transformed by software. This one hasn’t. We’re partnered with an Applied AI startup attacking a huge traditional market still dominated by out

Jerpoint Capital

Founding Engineer Jerpoint Capital Highly competitive compensation. The role Jerpoint Capital is a new hedge fund, founded by Seán Murphy, formerly a portfolio manager at Citadel. We launched in December 2025 with significant institutional capital and are growing quickly. This is our first dedicated

Plain

£7,917 - £10,833 /month

Who is Plain? Plain is redefining customer support for the next generation of B2B companies. We’re building the fastest, most powerful platform to help companies move beyond reactive support and build true customer relationships. Some of the world’s most forward-thinking companies - like Cursor, Ver

Plain

Who is Plain? Plain is redefining customer support for the next generation of B2B companies. We’re building the fastest, most powerful platform to help companies move beyond reactive support and build true customer relationships. Some of the world’s most forward-thinking companies - like Cursor, Ver

twentyAI

£10,000 - £16,667 /month

The Company: Join a seed stage(~£3M), VC-backed startup on a mission to build vertical and agentic tooling for the consulting and private equity landscape. Backed by tier 1 investors and angels from BCG, McKinsey, and Open AI. This startup is dedicated to building next-generation AI tools that move

SR2 | Socially Responsible Recruitment | Certified B Corporation™

£10,000 - £11,667 /month

Founding Senior Front-End Engineer Mobile Banking Platform (React Native) Central London | Hybrid | Full-time £120,000 – £140,000 + 15%-20% Bonus + Benefits We’re been supporting a highly successful, family-owned international private bank to hire a founding team for a brand-new digital banking plat

Oho Group

£8,333 - £13,333 /month

Founding Engineer – DeepTech Product Engineering Series A | £25M+ Raised | High-Impact Team | London We’re partnered with one of the most technically ambitious DeepTech startups in Europe — a rapidly scaling Series A company building products at the frontier of complex engineering and applied techno

Oho Group

£8,333 - £16,667 /month

Founding Engineer – Applied AI Startup Series A | AI Product Engineering | Hyper-Growth Opportunity | London | 5 Days Onsite We’re working with one of the most exciting Applied AI startups in London — a company using AI to transform a massive, outdated industry that has seen little meaningful innova