Product Engineer: AI Agents & Production-Ready Apps

Bolter; United Kingdom; On-site; GBP 80,000 - 115,000; Full time

Job summary

Bolter is seeking a product engineer to own the full lifecycle of the product—from rapid prototyping to production—across the agent-building experience, the workspace, and the applications agents generate.

You will work directly with the GM in a lean team, shaping core technical decisions, balancing speed with reliability, and building a pipeline that turns plain-language descriptions into live, trustworthy agents.

Qualifications

• Shipping production software experience, ideally at product-led startups.
• Deep TypeScript across the full stack; Go experience a plus.
• Experience with LLM apps, AI reliability, or real-time data infra.
• Strong product instincts linking tech decisions to business impact.
• Comfort prototyping quickly and shipping once viable.

Responsibilities

• Own the technical roadmap across the three domains above, from research and prototyping through production.
• Make architecture calls with real trade-offs - speed, reliability, cost, build vs buy, where AI does the work and where humans steer.
• Ship working prototypes fast and harden what works. This is a validation-stage environment; polish comes after proof.
• Use AI tools as a multiplier. We run lean, with a small human core augmented by a fleet of specialised AI agents for implementation.
• Recruit and shape the early engineering team as we scale.
• Stay close to the product. You'll work directly with the GM - expect to have strong opinions on UX, not just infrastructure.

Skills

TypeScript

Go

LLM design

AI reliability

Product instincts

Job description

Bolter is seeking a product engineer to own the full lifecycle of the product—from rapid prototyping to production—across the agent-building experience, the workspace, and the applications agents generate.

You will work directly with the GM in a lean team, shaping core technical decisions, balancing speed with reliability, and building a pipeline that turns plain-language descriptions into live, trustworthy agents.