Senior Backend Engineer

Hyperexponential
Warsaw
Workplace: HybridFull timeFunction: Software EngineeringSkills: ["Judgement","Communication","Self-starting","Critical thinking","Collaboration"]

Build and operate backend services for the next generation underwriting platform used by insurers. You’ll turn ambiguous underwriting problems into reliable software, shape architecture across APIs, domain models, persistence, reliability, observability, and evolution, and help design agent-assisted workflows where humans stay in control. Work closely with underwriters and cross-functional teams, using Kotlin/Java and AI coding tools like Claude while maintaining quality, security, and correctness in production.

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FursaFursa
Hyperexponential
Hyperexponential
2 days ago

Senior Backend Engineer

✓ Verified Job

Canonical indexed version, validated from employer's careers page.

Source: Company careers pageValidated by: Fursa AI
Last checked: 18 hours agoStatus: Live

Job Summary

Build and operate backend services for the next generation underwriting platform used by insurers. You’ll turn ambiguous underwriting problems into reliable software, shape architecture across APIs, domain models, persistence, reliability, observability, and evolution, and help design agent-assisted workflows where humans stay in control. Work closely with underwriters and cross-functional teams, using Kotlin/Java and AI coding tools like Claude while maintaining quality, security, and correctness in production.
Location: Warsaw
Workplace: Hybrid
Employment Type: Full time
Job Function: Software Engineering
Seniority: Mid level

Key Responsibilities

  • •Design, build, and operate backend services in Kotlin or Java, owning them in production.
  • •Translate ambiguous underwriting needs into simple, reliable software.
  • •Shape core architectural decisions across APIs, domain models, persistence, reliability, and observability.
  • •Build agent-assisted workflows, deciding where agents act vs. advise and where humans must remain in control.
  • •Collaborate across frontend, product partners, and client-facing teams, and provide/receive direct feedback to raise the engineering bar.

Pay and Benefits

Equity and Bonus:Equity
Perks:Share OptionsLearning BudgetHealth InsurancePaid LeaveMultisport

Key Requirements

  • •Strong experience building and running backend systems in Kotlin, Java, or another JVM language.
  • •Good judgement in architecture and system design, including what to build now vs. defer.
  • •Track record of shipping software that solved a real customer or business problem, ideally end to end.
  • •Self-starting approach that targets the highest-value problem rather than waiting for tasks.
  • •Clear communication across underwriters, executives, and engineers, adapting your message to the audience.
Experience:InsuranceUnderwritingRegulated domainSaaSAgent-assisted productsAI coding
Skills:JudgementCommunicationSelf-startingCritical thinkingCollaboration
Tech Stack:KotlinJavaClaudeAI coding toolsAPIs

Company Brief

Hyperexponential
Provides pricing decision-intelligence (PDI) software (hx Renew) that helps commercial P&C insurers and reinsurers build, deploy and manage pricing and underwriting models using machine learning and alternative data to improve risk selection and pricing performance.
Industry: InsurTech
Company Size: Medium (51 to 250 employees)
Revenue: USD 25M to 50M
Growth: Growth Stage Startup
Funding: Series B
Headquarters: London, United Kingdom
Founded: 2017
Glassdoor
Glassdoor: 3.5
WebsiteLinkedInGlassdoor