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Full Stack Engineer

hyperexponential.com Logo

hyperexponential

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Location:
United Kingdom , London

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Category:
IT - Software Development

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Contract Type:
Not provided

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Salary:

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Job Description:

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 Until now, insurance has been making billion-dollar decisions using outdated tools.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.

Job Responsibility:

  • Design and deliver a scalable authorisation service that enables granular permissions across the hx platform, supporting product teams building complex underwriting workflows
  • Define and validate a granular permissions model in collaboration with product and engineering teams, ensuring it supports teams, roles, risk, privacy, and model access across the platform
  • Build reusable platform services and SDKs that allow downstream teams to adopt core capabilities quickly, accelerating delivery across multiple product areas
  • Develop infrastructure and APIs for platform capabilities such as authorisation, webhooks, notifications, and API proxy services, ensuring they are secure, resilient, and easy to integrate
  • Partner closely with application teams to support adoption of the new permissions service, delivering an MVP that integrates with at least one production application
  • Contribute to engineering culture through strong operational discipline, clear documentation, and collaboration that raises the standard of platform engineering at hx

Requirements:

  • Built and delivered backend or infrastructure services that enabled multiple teams to ship faster through reusable platform capabilities
  • Designed and implemented APIs or platform services that achieved high reliability, scalability, and maintainability in production environments
  • Delivered systems using Rust or Kotlin (or a JVM language) and demonstrated the ability to learn and apply new technologies when required such as Frontend exposure with React/TypseScript
  • Implemented infrastructure using Terraform or other infrastructure-as-code tooling to support scalable cloud deployments
  • Delivered systems on cloud platforms such as AWS, ensuring operational robustness, observability, and long-term maintainability
  • Collaborated with cross-functional teams to design solutions, write clear documentation, and drive successful adoption of shared platform services
What we offer:
  • £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
  • 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

Additional Information:

Job Posted:
April 16, 2026

Employment Type:
Fulltime
Work Type:
Hybrid work
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