Senior Backend Developer (.NET)

Quick Facts

• Role: Senior Backend Developer (.NET)
• Project: Digital insurance platform and secure, scalable APIs with integrations
• Work model: Fully remote, office, or hybrid

Description

You’ll develop and enhance a modern digital insurance platform that supports the full insurance lifecycle—quoting, policy issuance, payments, servicing, renewals, and claims. The role focuses on .NET 8 microservices, workflow orchestration with Temporal, rules evaluation integrations, and building secure APIs and system adapters for web, mobile, and partner ecosystems.

Responsibilities

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

Requirements

• 5+ years of commercial experience with C# / .NET
• Strong hands-on experience with .NET 8
• Experience with Temporal workflow orchestration and the 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 system design for transactions, concurrency, idempotency, and error handling
• 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

• Work fully remotely, from the office, or hybrid
• Professional, financial, and career growth with mentoring and onboarding
• Additional annual bonus component; potential extra up to 1,000 EUR/month based on expertise
• Corporate training portal with a constantly updated knowledge base
• Certification compensation (e.g., AWS, PMP)
• Referral program
• Private health insurance and sports compensation (depending on employment type)
• Corporate life perks and events
• Opportunity to contribute in an interesting business domain and work with international teams