CTO / Founding Engineer

Location: Onsite, 5 days a weekSalary: £70,000-£100,000 (based on equity package) + significant equityType: Permanent, Full-Time

Are you an exceptional engineer ready to shape the future of an ambitious early-stage startup? We're seeking a Founding Engineer / CTO to lead the technical buildout of our innovative product through to a major exit. This is a rare opportunity to architect a company's technical foundation, build a world-class team, and take significant ownership in a high-potential venture.

• Lead the technical development of our product, shipping high-value code as a hands-on individual contributor.

• Architect and build a scalable, innovative platform from the ground up.

• Collaborate closely with the founding team to align technical strategy with our business vision.

• Build and eventually lead a small, high-caliber engineering team (1-20 engineers).

• Drive technical decisions that will shape the company's trajectory through upcoming growth phases.

• An exceptional coder with a proven ability to ship business-critical code.

• Intellectually curious, with a passion for learning and building outside the 9-5 (e.g., open-source projects, side ventures, or technical writing).

• Charismatic and inspiring, with the ability to attract and motivate top engineering talent.

• Ideally, you have a STEM degree from a top university and startup experience in early-stage environments.

• Bonus points for a GitHub portfolio showcasing personal or open-source projects, or a tech blog with published content.

• Comfortable with an onsite, 5-day-a-week role and excited to work closely with the founding team.

1. Review our business thesis and answer 35 structured mindset questions + 7 engineering-specific questions.

2. Join us for an informal get-to-know-you coffee or meal.

3. Participate in a paid trial: either a 3-5 day contractor engagement with the team or a weekend sprint with the founder.

• Competitive salary (£70k-£100k) with a significant equity package, offering real ownership in our journey.

• Be a core part of an early-stage startup with a clear path to a major exit.

• Shape the technical vision and culture of a company from day one.

Apply Now: If you're ready to build something groundbreaking and lead with code, curiosity, and charisma, send us your CV, a link to your GitHub or tech blog (if applicable), and a brief note on why you're excited about this role.

RSG Plc is acting as an Employment Agency in relation to this vacancy.