Software Engineer – Kernel Team
Hyperexponential (hx) is building an AI‑powered platform that enables critical decisions in a $7 trillion industry. The Kernel team builds the execution engine that evaluates, validates, and runs customer models at scale, allowing insurers to make correct, performant, and explainable decisions.
Responsibilities
- Design and deliver backend features in the Kernel execution engine that improve correctness, performance, and reliability for customer model runs at scale.
- Strengthen a clean, modular Kernel architecture that is easy to understand, test, and safely evolve over time.
- Build automated tests and observability for complex execution scenarios, enabling faster detection, diagnosis, and resolution of production issues.
- Partner with adjacent engineering teams to shape Kernel behaviour and interfaces, providing clear technical input and following through to delivery.
- Own work from design through rollout and monitoring, balancing immediate product needs with long‑term system sustainability.
- Demonstrate hx values by proactively identifying risks, collaborating constructively, and taking full accountability in a critical core‑platform area.
Qualifications
- Built and shipped backend systems in a polyglot production environment, working across languages such as Rust, Python, or C/C++, and choosing the right tool for the problem.
- Either used Rust in production systems, or demonstrated strong systems experience in C/C++ or Python with clear evidence of learning and adopting new languages quickly.
- Delivered backend features where correctness, performance, and resource efficiency were critical, and improved systems based on real production behaviour.
- Applied solid systems thinking around execution, concurrency, and memory or resource management in real‑world backend services.
- Designed and implemented effective testing and observability that made complex backend behaviour understandable, debuggable, and safe to evolve.
- Owned work end‑to‑end from design through rollout, monitoring, and iteration, collaborating closely with peers and raising risks early.
Preferred Culture Fit
- Prefer highly predictable work and are uncomfortable operating in ambiguous, evolving problem spaces.
- Optimize for shipping quickly at the expense of correctness, maintainability, or long‑term system health.
- Avoid ownership of outcomes beyond immediate code changes.
- Feel neutral rather than energized after reading our Culture Document.
Compensation & Benefits
Salary transparency is a priority; specific figures will be provided early in the process. We design competitive compensation that aligns with the impact our people make, including equity across all roles.
- £5,000 training and conference budget
- 25 days of holiday plus 8 bank holidays (33 days total)
- Company pension scheme via Penfold
- Mental health support and therapy via 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, lunches, socials, team breakfasts and lunches, snacks, drinks fridge, and a fun office at The Ministry.
Diversity & Inclusion
Hx is committed to a diverse, inclusive workplace where every perspective is valued. We continuously work to strengthen our ability to question assumptions, push boundaries, and design enduring solutions.
#J-18808-Ljbffr”, “datePosted”: “2026-05-18”, “hiringOrganization”: { “@type”: “Organization”, “name”: “hyperexponential”, “sameAs”: “https://uk.whatjobs.com/pub_api__cpl__435629645__4861?utm_campaign=publisher&utm_medium=api&utm_source=4861&geoID=33” }, “jobLocation”: { “@type”: “Place”, “address”: { “@type”: “PostalAddress”, “addressLocality”: “London” } } }Software Engineer – Kernel Team
Hyperexponential (hx) is building an AI‑powered platform that enables critical decisions in a $7 trillion industry. The Kernel team builds the execution engine that evaluates, validates, and runs customer models at scale, allowing insurers to make correct, performant, and explainable decisions.
Responsibilities
- Design and deliver backend features in the Kernel execution engine that improve correctness, performance, and reliability for customer model runs at scale.
- Strengthen a clean, modular Kernel architecture that is easy to understand, test, and safely evolve over time.
- Build automated tests and observability for complex execution scenarios, enabling faster detection, diagnosis, and resolution of production issues.
- Partner with adjacent engineering teams to shape Kernel behaviour and interfaces, providing clear technical input and following through to delivery.
- Own work from design through rollout and monitoring, balancing immediate product needs with long‑term system sustainability.
- Demonstrate hx values by proactively identifying risks, collaborating constructively, and taking full accountability in a critical core‑platform area.
Qualifications
- Built and shipped backend systems in a polyglot production environment, working across languages such as Rust, Python, or C/C++, and choosing the right tool for the problem.
- Either used Rust in production systems, or demonstrated strong systems experience in C/C++ or Python with clear evidence of learning and adopting new languages quickly.
- Delivered backend features where correctness, performance, and resource efficiency were critical, and improved systems based on real production behaviour.
- Applied solid systems thinking around execution, concurrency, and memory or resource management in real‑world backend services.
- Designed and implemented effective testing and observability that made complex backend behaviour understandable, debuggable, and safe to evolve.
- Owned work end‑to‑end from design through rollout, monitoring, and iteration, collaborating closely with peers and raising risks early.
Preferred Culture Fit
- Prefer highly predictable work and are uncomfortable operating in ambiguous, evolving problem spaces.
- Optimize for shipping quickly at the expense of correctness, maintainability, or long‑term system health.
- Avoid ownership of outcomes beyond immediate code changes.
- Feel neutral rather than energized after reading our Culture Document.
Compensation & Benefits
Salary transparency is a priority; specific figures will be provided early in the process. We design competitive compensation that aligns with the impact our people make, including equity across all roles.
- £5,000 training and conference budget
- 25 days of holiday plus 8 bank holidays (33 days total)
- Company pension scheme via Penfold
- Mental health support and therapy via 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, lunches, socials, team breakfasts and lunches, snacks, drinks fridge, and a fun office at The Ministry.
Diversity & Inclusion
Hx is committed to a diverse, inclusive workplace where every perspective is valued. We continuously work to strengthen our ability to question assumptions, push boundaries, and design enduring solutions.
#J-18808-Ljbffr…