Technical Cofounder (Founding Engineer)

ZipRecruiter; London; On-site; GBP 50,000 - 80,000; Full time

Job summary

A disruptive betting start-up is looking for a Technical Cofounder to join as a key partner. This role involves hands-on development, shaping the product's architecture, and ensuring safety and transparency in betting. This is an opportunity to lead technical decisions and build something impactful with equity compensation.

Benefits

20–25% equity depending on experience and contributions

Full ownership over technical decisions

Opportunity to shape the vision and culture

Flexible working and autonomy

Qualifications

• Strong backend engineering experience.
• Clear understanding of security, payments, and user protection.
• Ability to work autonomously with high accountability.

Responsibilities

• Take full ownership of the product's build and technical architecture.
• Shape the product, direction, and experience from day one.

Skills

Backend engineering

APIs

Scalability

Security

User data protection

Probability

Statistics

Quantitative analysis

Education

Graduate from a top university (e.g., Oxford, Cambridge, MIT, Stanford)

Job description

Job Description

Technical Cofounder Wanted – Help Us Make Betting Fair, Transparent & Safe

We’re building a disruptive betting start-up with the ambition to reimagine the gambling industry from the ground up. Our goal is simple: create a platform where betting is completely fair, non-predatory, transparent and safe.

This is currently a solo founder-led initiative — I’m now looking for a technical partner to join me as a true cofounder and help build from the ground up.

We believe the betting industry doesn’t need to exploit people to be profitable — and we’re proving that by taking an innovative, principled approach backed by strong technical execution and start-up agility.

Who We’re Looking For

We’re searching for a hands-on technical cofounder — someone ready to take full ownership of our product’s build and technical architecture, and who’s excited by the idea of building something radically different.

This is not just a dev role. You will be shaping the product, direction, and experience from day one. You’ll be a true partner in the business.

Core skills we value:

• Strong backend engineering experience (APIs, databases, systems architecture, scalability)
• Track record of shipping products quickly and improving based on user feedback
• Clear understanding of security, payments, and user data protection
• Ability to work autonomously, with high accountability and bias for action

Bonus points for:

• A background or deep interest in probability, statistics, or quantitative analysis
• Experience integrating external APIs (especially in gaming or fintech)
• Based in London (not required, but ideal for collaboration)

Where You Might Be Coming From

You could be:

• A high-performing backend engineer who’s built scalable platforms and wants more ownership
• A quant researcher or engineer from a hedge fund or trading firm who’s looking to apply their skills to something with positive social impact
• A developer at a gambling company who’s disillusioned with exploitative models and wants to help fix the space
• A graduate from a top university (e.g., Oxford, Cambridge, MIT, Stanford, ETH Zurich, Imperial, UCL), with a strong technical portfolio and a desire to build something meaningful from the ground up.

We’re open-minded — what matters most is that you’re an exceptional builder with conviction, speed, and a strong ethical backbone.

What’s In It For You

• A true cofounder position, with 20–25% equity, depending on your experience and contributions
• Full ownership over technical decisions, stack selection, and architecture
• An opportunity to shape the vision and culture of a company from day zero
• The chance to build something socially positive in a space that badly needs reinvention
• Flexible working, autonomy, and a fast-moving early-stage environment

Note: As is standard with most early-stage start-ups, compensation will be equity-heavy and salary-light.

Final Note

Because the product involves a novel and still-confidential model, applicants will be asked to sign a short NDA prior to any deeper discussions.

If this resonates with you and you’re ready to build something ambitious, ethical, and technically exciting — get in touch.

We're especially excited to hear from candidates with a strong technical foundation, including those from leading universities or high-performance trading and quant environments.