hyperexponential - Senior Product Engineer
Requirements
• Built and shipped production systems end-to-end, from design through rollout, monitoring, and iteration, in settings where correctness, performance, and resource efficiency mattered. • Designed testing and observability that made complex behaviour understandable, debuggable, and safe to evolve. • Worked effectively in a polyglot environment, choosing the right tool for the problem and picking up unfamiliar languages, domains, and codebases fast. Strong systems experience, for example in Rust, C/C++, or Python, is valued, and we'll upskill you where there are gaps. • Shipped work outside your strongest layer of the stack when the problem needed it, picking up the front end, the data layer, or the infrastructure rather than waiting for someone else to. • Used AI tools as a serious part of how you build, with the judgement to direct, review, and stand behind what they produce. • Carried product and design judgement into your engineering work, shaping the solution rather than only implementing a spec and making sensible calls under ambiguity. • Owned outcomes beyond your immediate task, taking decisions rather than escalating them. • YOU’RE UNLIKELY TO THRIVE HERE IF • You prefer following detailed instructions rather than experimenting and finding your own approach. • You are uncomfortable working directly with non-technical stakeholders to understand their challenges. • You avoid tackling ambiguous or open-ended problems where the solution isn’t obvious. • 4. Values Interview with the CPTO • 5. Meet the CEO • OUR COMMITMENT TO DIVERSITY • hxers 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. • If this opportunity resonates with you, we encourage you to apply or share it with your connections! Our dedicated talent team reviews all applications, and we promise to provide feedback regardless of the outcome. • For more information about applying and to view other opportunities, you can visit our careers page. • Please note that background checks will be conducted as part of the hiring process to ensure compliance with our governance policies. We handle all background checks sensitively and in full compliance with relevant regulations. All applicant data will be processed in accordance with data protection regulations and our privacy policy.
Responsibilities
• Taking a customer problem from discovery to production inside a pod, getting close to customers yourself, framing the problem, and shipping in small increments guided by real customer signal rather than internal opinion. • Directing AI agents to draft implementation, tests, and migrations, then reviewing, integrating, and hardening that work. You'll write intent precisely enough to brief both a teammate and an agent, and own correctness and maintainability regardless of how the first draft was produced. • Designing and delivering robust production systems where correctness, performance, and resource efficiency matter, with the tests and observability that make complex behaviour safe to evolve. • Working across the codebase wherever the problem leads, including areas your pod doesn't steward, with stewards looped in proportionate to the risk rather than handing work off and waiting. • Moving between pods, problems, and streams as priorities change, ramping fast on unfamiliar domains and leaving what you built running well behind you. • Taking full accountability for outcomes rather than just your code changes: raising risks early, and deciding rather than escalating.
Benefits
• At hx, we’re committed to salary transparency. You’ll always have clarity on pay early in the process - our Talent Partner will share details with you during initial conversations - and we’re working towards publishing salary information for all roles globally. • Because we’re building at the intersection of technology/SaaS and insurance, our roles don’t always map neatly onto traditional benchmarks. Our approach is to design compensation that’s competitive in the market, fair across teams, and aligned with the impact our people make. • £5,000 training and conference budget for individual and group development. • 25 days of holiday plus 8 bank holidays (33 days total). • Company pension scheme via Penfold. • Mental health support and therapy via Spectrum.life http://Spectrum.life. • Individual wellbeing allowance via Juno. • Private healthcare insurance through AXA. • Income protection and Life Insurance. • Cycle to Work Scheme. • Top-spec equipment (laptop, screens, adjustable desks, etc.). • Regular remote and in-person hackathons, lunch and learns, socials, and game nights. • Team breakfasts and lunches, snacks, drinks fridge, and a fun office at The Ministry. • Exceptional opportunities for personal development and growth as we build something remarkable together.
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