Founding Engineer / CTO Co-Founder

Growthstage Ai — United Kingdom · Posted ~2 hours ago

Skills

backend development systems design API development data modeling scalable services greenfield development LLMs Go React Python TypeScript Java Rust

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Summary ✨ AI‑Generated

Join an early-stage venture as a hands-on Founding Engineer with potential to take on technology leadership. Build core infrastructure and backend systems from scratch, design scalable APIs and services, collaborate directly with founders, and establish the foundations for a future engineering organization.

Highlights

High ownership from the start, close collaboration with founders, greenfield engineering, and the opportunity to shape future technology architecture and engineering practices.

Description

We’re looking for a high-caliber engineer to join as a Founding Engineer, at junior, mid or senior capacity. 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 systemsDesign and implement APIs, data models, and scalable servicesCollaborate closely with founders on product direction and technical architectureShip code fast, validate assumptions, and iterateLay 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-offsComfortable building from zero — greenfield work doesn’t scare you; in fact, you prefer itExperienced with cloud infrastructure — AWS, GCP, or similar; IaC (Terraform, Pulumi, etc.) is a plusCompetent with databases and data modeling — SQL and NoSQL, designing schema for scaleComfortable 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 ABuilt or deployed software used by enterprise customersExperience 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 pipelinesFrontend experience in React, TypeScript, or similar modern frameworks 📈 What We Offer Early-stage equity and the opportunity to shape foundational decisionsHigh ownership, zero bureaucracy — build what matters, fastFounders who value engineers, ship code, and work closely with youA role that grows with you — if you have CTO potential, you’ll have a path You should apply if: You’re a product-focused engineer — you solve problems through code, you like building things that work, and you’ve got the technical depth to back it up.