Software Engineer, hyperexponential
Rust
Offers equity
2-3 days a week in office
AI-powered platform transforming risk and pricing decisions
Job no longer available
AI-powered platform transforming risk and pricing decisions
201-500 employees
Job no longer available
Offers equity
2-3 days a week in office
201-500 employees
Company mission
To build the decision infrastructure that helps the world take on more risk with confidence.
Role
Who you are
- 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 (you will be upskilled in Rust if you're not familiar)
- 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
What the job involves
- The Kernel team sits at the core of hx’s platform, building the execution engine that underpins how customer models are evaluated, validated, and run safely at scale
- Their work directly enables hx Renew and future products to make correct, performant, and explainable decisions in high-stakes environments
- Within the team, engineers work on deeply technical system problems spanning execution, concurrency, memory management, and observability
- The focus is on building a robust, modular engine that can evolve over time without compromising correctness or performance
- As a Software Engineer in the Kernel team, you will own meaningful parts of this critical system end to end, contributing production code, improving architecture, and partnering closely with adjacent teams to ensure the engine meets real product and customer needs
- Designing and delivering backend features in the Kernel execution engine that improve correctness, performance, and reliability for customer model runs at scale
- Strengthening a clean, modular Kernel architecture that is easy to understand, test, and safely evolve over time
- Building automated tests and observability for complex execution scenarios, enabling faster detection, diagnosis, and resolution of production issues
- Partnering with adjacent engineering teams to shape Kernel behaviour and interfaces, providing clear technical input and following through to delivery
- Owning work from design through rollout and monitoring, balancing immediate product needs with long-term system sustainability
- Demonstrating hx values by proactively identifying risks, collaborating constructively, and taking full accountability in a critical core-platform area
Application process
- Initial call with Talent team (30 minutes)
- Manager Interview (60 minutes)
- Technical Assessment (e.g., code review, system design) (120 minutes)
- Values Interview with Tech Leadership (60 minutes)
- Offer
Salary benchmarks
Our take
hyperexponential was created to provide modelling software to help people and businesses build, deploy and manage analytical models that work with small, sparse and fragmented datasets. Its goal is to make teams more agile, collaborate more deeply, and work more productively.
hyperexponential's pricing and data-driven decision-making software is built for the speciality and commercial insurance markets. The product has broad applications, but the company's initial focus is on speciality insurance, a sector the founders know well, having worked there for more than a decade.
The company's making a name for itself too, working with some of Europe's biggest insurers to transform how pricing decisions are made. And its newest launch, hx AI, blends powerful AI with its core platform to help insurers build smarter models, faster. It's a strong signal that hyperexponential is not just growing, but ready to lead the way.
Freddie
Company Specialist at Welcome to the Jungle
Insights
Company
Funding (2 rounds)
Jan 2024
$73m
SERIES B
Jun 2021
$18m
SERIES A
Total funding: $91m
Company benefits
- £5,000 for individual and group training and conference budget
- 25 days holiday plus 8 bank holiday days (33 in total)
- Company pension scheme via Penfold
- Mental health and therapy provision via Spectrum.life
- Individual wellbeing allowance via Juno
- Private healthcare insurance through AXA
- Top-spec equipment (laptop, screens, adjustable desks, etc)
- Regular remote & in-person hackathons, lunch & learns, socials and games nights
- Team breakfasts and lunches, snacks, drinks fridge, fun office @ The Ministry
Company values
- We are owners - We help move hyperexponential forward without being told
- We push boundaries - We keep going for ourselves and our customers when most would stop
- We grow - We learn deeply, by making things. We improve through data and insights
- We go deeper - We apply a thoughtful and customer centric mindset to all we do
- We do the right thing - We are usually nice, never disrespectful, and always kind
Company HQ
London, UK
Articles
Leadership
Amrit Santhirasenan
(Co-Founder & CEO)CompSci at the University of York, qualified Actuary and previous Head of Pricing and Analytics of Tokio Marine Kiln, one of the largest managing agents at Lloyd’s.
People progressing
They joined hyperexponential in 2020 when the company still had a fairly small Engineering team. They were given the opportunity to step in as a Team Lead and ended up being one of the first Team Leaders within ProdEng.
Charlotte joined hx in 2022 and progressed from Project Manager to Delivery Lead, now driving strategic programmes and helping scale how we deliver cross-functional work.
Diversity, Equity & Inclusion at hyperexponential
Rotem Ben-David (Head of People Operations & Performance)
- We are committed to diversity and equal opportunity. We believe that the more inclusive we are, the better our work and culture is. We are not yet where we want to be in terms of balance, but it is our mission to build a team that represents a variety of backgrounds and perspectives and we are working hard towards that goal.
Share this job
View 21 more jobs at hyperexponential