Product Engineer - Bolter
ImprobableResponsibilities
- Own the technical roadmap for the agent runtime, workspace, agent-generated applications, and production reliability.
- Design and build systems that turn plain-language descriptions into reliable agents that retain context and execute work end to end.
- Build the workspace and infrastructure for users to steer agents and use generated trackers, dashboards, and tools.
- Develop evaluation, error-handling, and reliability systems that make agent output dependable in production.
- Make architecture decisions involving speed, reliability, cost, build-versus-buy, and human-versus-AI workflows.
- Rapidly prototype, ship, and harden validated product capabilities across the full stack.
- Use specialized AI agents and other AI tools to accelerate implementation.
- Work directly with the GM and contribute strong product and user-experience judgment.
- Recruit and shape the early engineering team as Bolter scales.
Requirements
- Track record of shipping production software, ideally with founding or early-engineer experience at a product-led startup.
- Strong TypeScript experience across the full stack and some Go experience where appropriate.
- Depth in at least one of LLM application design and production AI reliability, real-time data infrastructure, or developer-facing products and internal tooling.
- Strong product instincts and ability to connect technical decisions to user outcomes and business impact.
- Ability to prototype quickly and then improve systems with tests, edge-case handling, and reliability work.
- Interest in messaging applications, productivity software, AI messaging applications, or AI.
- Strong written technical communication and comfort working through ambiguous problems.
- Ability to use AI agents as a force multiplier and operate effectively in a lean team.
- Experience with AI products, productivity tools, chat applications, LLM evaluations, hallucination mitigation, production AI reliability, real-time streaming architectures, event-driven systems, or consumer-facing applications is valued.
- Experience across backend services and frontend user experience is a bonus.
- A public portfolio, open-source work, papers, blog posts, or side projects is a bonus.
- Candidates may apply even if they do not meet every listed requirement.
Tech Stack
Categories
About Improbable
Improbable is a UK-based venture builder that creates and backs companies built on emerging technologies. It aims to solve the hardest technical challenges of humankind and embraces the risks associated with doing so. Over more than a decade, the company has developed and deployed high-performance technologies across sectors including gaming, virtual worlds, and defence, and has built and exited multiple ventures. Today, Improbable focuses on building at the intersection of AI and web3 through a venture-builder model that combines capital with hands-on operational support, shared technical infrastructure, and experienced leadership. Rather than operating as a passive fund, Improbable works alongside founders to help them build, launch, and scale ambitious companies, while ensuring that intellectual property and long-term control remain with the ventures themselves.