Founding CTO

preferred)| Fundraising | Salary/equity to be agreed

I'm Chris, founder of GIH. We're building an AI operating platform for established service businesses, starting with UK accountancy. Our model is to acquire businesses and deploy the software into their daily workflows, measuring its effect on time, quality and cost.
We've built version 1 of Helix, connecting accounting workflows, AI assistance, source evidence and review controls. It covers work including reconciliation, payroll, VAT and debtors. The next challenge is deployment in an operating practice, including production integrations, security and independent validation.
I'm looking for a hands-on CTO to own architecture and engineering delivery, write code, work with accountants and build the technical team. You should have shipped and operated customer-facing software, be comfortable with APIs and data systems, and have practical experience evaluating LLM/agent workflows. Previous CTO experience isn't essential; evidence of building and owning a product is.
We're currently fundraising and expect the round to close at the end of November 2026. You can join when the round closes or start earlier, depending on your availability and preference. Salary, equity and any arrangements before the round closes will be agreed directly. This is intended as a full-time technical leadership role.
Email [email protected] with “HN CTO” in the subject, your CV/LinkedIn, something you built, your location and preferred start date.