Founding Software Engineer - 25,190+ job offers

Indico Labs

Job title: Founding Software Engineer (Data Science) Company: Indicolabs.io Start date: ASAP Job type: Permanent | Full-time Location: London, Camden Town About Indico Labs Indico Labs is a London-based, fast-growing Research Technology startup. We are redefining market research by empowering the wo

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We’re working with one of the most exciting Applied AI startups in London — a company using AI to transform a massive, outdated industry that has seen little meaningful innova

Matched Stay

Matched Stay is building the operating layer for project-based corporate accommodation. Companies with mobile teams still rely on emails, spreadsheets, manual supplier chasing and slow negotiation when trying to house workers across multiple locations, changing dates and extended stays. We’re buildi

Altech Group Ltd

£5,833 - £8,333 /month

🚀 Founding Product Engineer 💰 Up to £100k + meaningful equity 📍 London | Onsite 💻 Python, TypeScript, React, SQL, AWS The Opportunity I'm working with a well-funded early-stage startup looking to hire a Founding Product Engineer to help build and scale a product that's already gaining strong tra

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

Marble

About Marble Marble is a climate tech venture studio. We partner with scientists, engineers, and operators to create companies solving hard climate problems in the world's largest industries. Our first 13 companies are building transformative products across energy, industry, agriculture, and climat

About HelmGuard We're building agent-native risk infrastructure: risk management and trust building, delivered by AI agents, for a world increasingly run by them. As more decisions and transactions run through agents, the volume of risk to manage and trust to establish is growing very fast. Today bo

About HelmGuard We're building agent-native risk infrastructure: risk management and trust building, delivered by AI agents, for a world increasingly run by them. As more decisions and transactions run through agents, the volume of risk to manage and trust to establish is growing very fast. Today bo

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

Zealous Agency

£15,000 - £23,333 /month

Founding RL Researcher/ Engineer Remote (UK only) £180,000 - £280,000 base + equity DOE This is one of those founding-team opportunities that you can’t afford to miss. It’s at a well-funded AI research lab about to blast out of stealth mode and doing some novel work at the frontier of reinforcement

Zealous Agency

£8,333 - £10,000 /month

Founding Full Stack Engineer Up to £120,000 London (Hybrid) Redefining an industry that’s ripe for disruption is the aim of this startup. You’ll have the chance to join an established team and own their small but growing product. The emphasis on this role is blending full stack capabilities with wid

Riplo

The Mission We are building the AI Workspace for Consultants. The $1 trillion consulting industry is powered by some of the world’s brightest minds, yet they remain trapped in manual, inefficient workflows - spreadsheet orchestration, slide-deck assembly, and fragmented data synthesis. We are moving

Oho Group

£8,333 - £16,667 /month

Founding Engineer 🚀 Join one of the most exciting startups in the market right now. Backed by $50M+ in funding , this fast-growing technology company is looking for exceptional engineers who want to build ambitious products, move quickly, and make a real impact from day one. You'll be joining a sma

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

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

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

Healthtech-1

Let's make the NHS the most advanced healthcare system in the world 💙 The world’s best healthcare, for free. It's not a new idea, it's called the NHS. But the largest healthcare provider is fundamentally broken. So we’re on a mission to fix it with technology that actually works. We love the NHS be

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

KO2 Embedded Recruitment Solutions LTD

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