Senior Backend Developer (.NET)

Quick Facts

Senior Backend Developer (.NET) for a project developing a digital insurance platform across the EU. Work is available fully remote or hybrid.

Description

Build and enhance a modern digital insurance platform that supports the full insurance lifecycle. The role focuses on delivering secure, scalable .NET 8 microservices, reusable APIs, and seamless system integrations for quoting, policy issuance, payments, servicing, renewals, and claims.

Responsibilities

• Design and build .NET 8 microservices using clean architecture layered structure (Domain/Application/Infrastructure/API layers).
• Implement Temporal workflow orchestration (typed workflow/activity interfaces, cross-task-queue dispatch, signal/query patterns).
• Integrate rules evaluation with the GoRules ZEN engine (GoRules.Zen NuGet, Rust FFI in-process).
• Develop platform capabilities such as config registry, rules API, workflow gateway, and payment/policy adapters.
• Implement cross-cutting concerns including Managed Identity service-to-service authentication, Cerbos authorization, and structured logging via Serilog/Anotar.
• Write and maintain xUnit tests using FakeItEasy and Shouldly; build integration tests against real dependencies (no mock DB).
• Collaborate with platform and domain teams on API contracts, OpenAPI specs, and shared NuGet libraries.

Requirements

• 5+ years of commercial experience with C#/.NET
• Strong hands-on experience with .NET 8
• Experience with Temporal workflow orchestration and Temporal .NET SDK
• Experience designing and developing microservices
• Strong understanding of Clean Architecture, SOLID, and layered architecture
• Strong understanding of distributed systems and asynchronous processing
• Experience with transactions, concurrency, idempotency, and error handling
• Strong hands-on experience with Azure
• Experience with Entity Framework Core
• Experience writing unit and integration tests
• Experience with Docker and containerized development
• Ability to independently and quickly learn new technologies and libraries
• Willingness to study project-specific libraries before the technical interview
• English: Intermediate+ or above

Benefits

• Fully remote or hybrid work options
• Mentoring and onboarding support for professional and career growth
• Annual bonus with potential additional up to EUR 1,000/month based on expertise
• Corporate training portal for ongoing learning
• Private health insurance and sports compensation (depending on employment type)
• Certification compensation (AWS, PMP, etc.)
• Referral program and additional corporate perks