AI-first Senior Product Engineer

Mindstone Learning Ltd.; Greater London; Hybrid; GBP 95,000 - 140,000; Full time

Benefits offered by this job

Up to 30% annual bonus

Equity

Hybrid London-based

Job summary

Mindstone Learning Ltd. in London is seeking a senior product engineer who is AI-first and product-minded, hands-on, and ready to own problems end-to-end—from user need to design decisions, build across the stack, ship, and measure results.

You will work directly with the CTO, ship features across Rebel, and help shape engineering standards as the team grows. The role is hybrid with a minimum of 2 days in the office and offers a competitive salary plus equity and a bonus plan.

Qualifications

• Shipped meaningful product used by real people recently.
• AI-first thinking: daily use of Cursor, Claude Code, or equivalent.
• Full-stack experience across backend and frontend.
• Make good product decisions independently, not just technical ones.

Responsibilities

• Ship features end-to-end across Rebel.
• Make autonomous product and technical decisions.
• Work directly with LLMs, agents, and MCP integrations.
• Contribute to our open-screen ecosystem.
• Help shape engineering standards and culture as the team grows.
• Mentor and set the bar for quality.

Skills

AI-first mindset

Product-minded

Full-stack

Mentoring

End-to-end shipping

Decision making

Tools

Cursor

Claude Code

OpenAI API

Job description

Hybrid - London (min. 2 days/week) Full-time Competitive salary + up to 30% bonus + equity

Mindstone is building the reference company for AI transformation. We live in the future we are building - using AI every day to run the company, then helping others adopt it. Profitable, venture-backed, and growing fast.

The Role

An AI-first, product-minded, deeply hands‑on Senior Product Engineer. You will own problems end-to-end: understand the user need, make product and design calls, build across the stack, ship, and measure. Working directly with the CTO.

What You Will Be Doing

• Shipping features end‑to‑end across Rebel, used daily by real teams
• Making autonomous product and technical decisions
• Working directly with LLMs, agents, and MCP integrations
• Contributing to our open‑screen ecosystem
• Helping shape engineering standards and culture as the team grows
• Mentoring and setting the bar for quality

About You - Essential

• Shipped meaningful product that real people use, recently and repeatedly
• Think and work AI‑first: daily use of Cursor, Claude Code, or equivalent
• Full‑stack in practice: comfortable from backend systems to frontend product
• Make good product decisions independently, not just technical ones
• Based in or near London, 2 days/week minimum in office

About You - Bonus

• Built or integrated AI/LLM features in production
• Previous startup experience (10-50 person team)
• You have hired or mentored, or want to start

What We Offer

• Competitive salary + up to 30% monthly bonus tied to company performance
• Possibility of meaningful equity in a profitable, venture‑backed company
• Quarterly Swarm Weeks across Europe
• Hybrid London‑based - 2 days/week minimum

Diversity and Inclusion

We are committed to building a diverse team and actively encourage applications from candidates of all backgrounds. We particularly welcome applications from underrepresented groups in tech.