Staff Software Engineer - AI Products

About hyperexponential (hx)

At hyperexponential, we’re building the AI-powered platform that enables the world’s most critical decisions in a $7 trillion industry, which risks to take, and how to price them. These are the decisions that shape real-world outcomes: whether rockets successfully launch into space, autonomous vehicles make it to market, or communities recover after major storms.

Until now, insurance has been making billion-dollar decisions using outdated tools. We’re changing that. Our platform brings together data, AI, and human expertise to give insurers the fastest path from submission to decision - helping them move faster, act smarter, and take on more risk with confidence.

Backed by a16z, Highland Europe, and Battery Ventures, we’re scaling globally - already trusted by nearly 50 of the world’s largest insurers, with zero churn and billions in premiums flowing through hx.

What began as a single product in one market has rapidly evolved into a multi-product, multi-territory platform powering every stage of pricing and underwriting. AI is at the core of what we do - from building the world’s first domain-specific AI peer programmer for insurance (think GitHub Copilot with a PhD in actuarial science) to shaping agentic workflows that reinvent how this industry operates.

What makes hx different is the people who build it. Here, impact isn’t tied to title or tenure; it’s defined by the challenges you take on and the discipline you bring. Surrounded by peers who stretch you, you’ll do the best, hardest work of your life in a company engineered to endure.

If that sounds like you, join us in building what comes next.

About the hxAI team

At hx, AI is not an add-on, it is central to our mission. We are redefining how the insurance industry builds software and makes decisions, powered by generative AI. Our team combines state-of-the-art LLM technology with deep insurance domain expertise to solve problems no one else is tackling.

We’re currently focused on two flagship products. The first is a powerful ingestion engine that transforms unstructured insurance documents into structured insights. The second is our crown jewel: a domain-specific AI peer-programmer embedded inside a custom IDE, designed to reshape how actuaries and underwriters code, model risk, and make billion-dollar decisions.

This is applied AI with teeth. Our team moves fast, experiments often, and ships real value into the hands of customers. As a Staff Engineer, you’ll join a small, high-ownership group with the autonomy to drive innovation and directly influence how AI transforms an entire industry.

What you’ll be doing

• Architect and build AI-driven products from scratch, tackling complex problems with no established playbook.

• Lead the design and implementation of novel features such as domain-specific coding copilots within hx’s proprietary development environment.

• Partner with cross-functional peers to shape architectural decisions, ensuring scalability, reliability, and long-term sustainability of our AI systems.

• Experiment, prototype, and ship rapidly, seeing innovations move quickly from idea to production in live customer environments.

• Contribute to the evolution of hx’s AI technical vision, embedding best practices and advancing engineering excellence across the team.

• Act as a multiplier: mentoring engineers, raising standards, and building a culture of curiosity, speed, and quality.

What you’ll need to have done

• Built and shipped production-grade systems in Python, with strong depth in distributed, cloud-based architectures.

• Solved real-world data challenges, designing reliable, scalable systems that operate under ambiguity.

• Taken end-to-end ownership of technical initiatives: identifying opportunities, designing solutions, and delivering impact.

• Communicated complex technical ideas clearly to a range of stakeholders, from engineers to product leaders.

• Influenced engineering direction and culture, scaling local wins into broader practices.

• Delivered AI or ML-powered products from prototype to scale, balancing experimentation with production rigour - nice to have.

You’re unlikely to thrive here if

• You prefer predefined playbooks and predictable projects over ambiguous, exploratory work.

• You see your contribution as limited to code, rather than shaping products and systems end-to-end.

• You’re uncomfortable with rapid iteration and experimentation in live environments.

If reading our Culture Document leaves you feeling neutral rather than energised, hx may not be the place where you’ll do your best work. We’re building something that asks for commitment and conviction, and we want you to feel excited by the opportunity to grow with us.

How hx Warsaw Works

At hyperexponential, we believe in a balance between remote work, and building relationships across teams and locations. You’ll have your main office in Warsaw, 2 days a week, with also ability to travel to London HQ to meet the wider team. International travel will be much less frequent, perhaps 2-3 times a year.

Warsaw HQ was established in 2023, quickly hiring our first handful of high-calibre engineers. Fast-forward to today in 2025, there are 50+ in Warsaw and surrounding cities who travel for the collaborative environment.

On Wednesdays you’ll often find Warsaw HQ organising team lunch paid by hx, getting drinks after hours. The office is also dog-friendly, so feel free to bring yours along!

What Your Offer Could Look Like

B2B

• Share Options at a highly successful Series B company

• 25 days of non-working + Polish bank holidays

• £5,000 GBP budget for Learning & Development

• Mental Health Support and Therapy via Spectrum Life

• Optional for you: access to Private Healthcare via Luxmed + Multisport (fully funded by yourself as B2B Contractor)

• Top-spec laptop (MacOS or Windows)

Contract of Employment (UoP)

• Share Options at a highly successful Series B company

• £5,000 GBP budget for Learning & Development

• 26 days of holiday + Polish bank holidays

• Company pension

• Company Sick Pay for 10 days at 100% salary

• Mental Health Support and Therapy via Spectrum Life

• Monthly Wellbeing allowance via Juno

• Private Healthcare Insurance via Luxmed

• Multisport - Classic level

• Top-spec work equipment (MacOS, Windows + additional monitors, mechanical keyboards etc)

Our commitment to Diversity

hxer's are at the centre of everything we build. We know that progress depends on diverse perspectives, and we are committed to creating an environment where everyone can thrive, grow, and make an impact. We recognise there is always more to do, and we take responsibility for shaping a workplace that is not only diverse but genuinely inclusive.

Diversity is not just the right thing to do, it is key to solving the complex challenges we choose to take on. By welcoming people from all backgrounds and experiences, we strengthen our ability to question assumptions, push boundaries, and design solutions that endure.

If you’re energised by complexity and motivated to grow, we encourage you to apply and join our global team.