hyperexponential - Full Stack Engineer (Kotlin/React)
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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. • YOU’RE UNLIKELY TO THRIVE HERE IF • You prefer highly defined problems and predictable delivery environments rather than working through ambiguity and shaping new platform capabilities. • You focus only on your own component rather than taking responsibility for the wider outcome and adoption of the systems you build. • You are uncomfortable collaborating closely with other teams or incorporating feedback into technical and product decisions.
Responsibilities
• 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.
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. • Equity: We offer equity across all roles at hx, making it a significant component of total compensation. Your talent partner will be able to share more details about this. • £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 https://theministry.com/. • Exceptional opportunities for personal development and growth as we build something remarkable together.
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