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Salary
≈ $125k – $235k per year (Estimated)
Location
Hybrid (London, United Kingdom)
Seniority
Architect · 10+ years exp
Employment
Full-Time

Confirmed on the employer's own hiring board on Oct 25, 2026. First seen by Alion on Oct 23, 2026. WhyHireWrong scores B on the Alion truth index.

Overview
Company
Impact
Profile match
Headquartered in Warsaw, Poland, WhyHireWrong? is a boutique tech talent acquisition agency dedicated to transparent hiring processes for technology, product, and engineering roles. The company offers specialized recruitment and career placement services combining role-specific candidate video assessments, resume optimization, and direct employer introductions. By enforcing strict zero-ghosting policies and pre-verifying candidate intent, it helps fast-growing technology companies reduce hiring risks and streamline their recruitment pipelines.

The Role

You will be the most senior engineer on the product and the person who decides how it's built. In year one you will write a large share of the code yourself. As the team grows, you will take over technical leadership of the platform: architecture, engineering standards and hiring. For the right person this is a clear path to CTO.

You will work directly with the founders and the model research team. You are the link between a frontier model and a product that safety-critical engineers rely on.

What You Will Own

  • Architecture: frontend, backend, data and infrastructure, including build-vs-buy decisions.

  • Product delivery: ship quickly with product and early users, who are control and embedded engineers.

  • Model integration layer: inference serving, prompt and context management, tool use, streaming, evaluation hooks and fallbacks. New model releases plug in without a rewrite.

  • Trust workflows: traceability from requirements to code, diffing and review, test execution and audit trails, so engineers can verify AI-generated code.

  • Engineering foundations: CI/CD, observability, security, access control and cost control for GPU-backed workloads.

  • Enterprise readiness: SSO, data isolation and on-prem or private-cloud deployment for regulated industries.

  • Team: hire, mentor and lead the first engineers, and define how they work.

Requirements

Must have

  • 10+ years building and shipping production software, with real depth in both frontend and backend.

  • Strong TypeScript and React (or an equivalent modern frontend), plus at least one backend language: Python, Go or TypeScript/Node.

  • Founding, lead or principal engineer on a product taken from early stage to paying customers.

  • LLM features shipped to production: model APIs or self-hosted inference, streaming, evaluation, and cost/latency trade-offs.

  • Cloud skills on AWS, GCP or Azure, plus containers and infrastructure as code.

  • Sound architectural judgement: you know when to move fast and when a shortcut costs too much.

  • Experience hiring and leading engineers, or a clear appetite to do so.

  • Clear written and spoken English, and comfort working with founders, researchers and customers.

Nice to have

  • Compliance exposure: SOC 2, ISO 27001 or FedRAMP.

  • Developer tools, IDEs, code editors (Monaco, VS Code extensions) or code analysis tooling.

  • Serving custom or fine-tuned models (vLLM, TensorRT-LLM, Triton) and GPU infrastructure.

  • Rust or C/C++.

  • Selling to and deploying in regulated or security-conscious enterprises.

Offer

  • CTO-level ownership of a product where frontier AI meets real-world engineering.

  • A clear path to the CTO role as the company grows.

  • Competitive salary and meaningful CTO-level equity.

  • Direct work with a founding team that combines AI research with hands-on experience building high-voltage and electric drive systems.

  • Hybrid working from the London office, with a full benefits package.

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