Technical Co-Founder // Startup CTO (Go and React) in City of London

Job description

We’re looking for a high-caliber engineer to join as a CTO. You should be deeply hands-on with code, technically opinionated, and capable of building production systems from scratch. This is a role for someone who enjoys execution but also has the potential (or ambition) to lead technology at a company-defining level.

What You'll Do

• Build and own core infrastructure and backend systems
• Design and implement APIs, data models, and scalable services
• Collaborate closely with founders on product direction and technical architecture
• Ship code fast, validate assumptions, and iterate
• Lay the groundwork for the future engineering team (tooling, processes, and architecture)

✅ Core Technical Requirements

• Proficient in one or more modern backend languages (e.g. Python, Go, TypeScript, Java, Rust)
• Strong systems design skills — you can model real-world systems and reason about scale, latency, and trade-offs
• Comfortable building from zero — greenfield work doesn’t scare you; in fact, you prefer it
• Experienced with cloud infrastructure — AWS, GCP, or similar; IaC (Terraform, Pulumi, etc.) is a plus
• Competent with databases and data modeling — SQL and NoSQL, designing schema for scale
• Comfortable writing tests and deploying production systems — you care about code quality and reliability

⭐ Bonus Experience (Not Required, but Valuable)

• Worked at a Pre-Seed or Seed-stage startup through to Series A
• Built or deployed software used by enterprise customers
• Experience with applied machine learning or MLOps (not just academic or notebook-based work)
• Exposure to event-driven architectures, streaming systems (Kafka, etc.), or real-time data pipelines
• Frontend experience in React, TypeScript, or similar modern frameworks

What We Offer

• Early-stage equity and the opportunity to shape foundational decisions
• High ownership, zero bureaucracy — build what matters, fast
• Founders who value engineers, ship code, and work closely with you
• A role that grows with you — if you have CTO potential, you’ll have a path

You should apply if:

You’re an engineer first — you solve problems through code, you like building things that work, and you’ve got the technical depth to back it up.

Extra information

Status

Closed

Education Level

Secondary School

Location

City of London

Type of Contract

Casual / Part Time Jobs

Full UK/EU driving license preferred

No

Car Preferred

No

Must be eligible to work in the EU

No

Cover Letter Required

No

Languages

English