Senior Backend Engineer (UK, Ireland)

Stack

Responsibilities

• ▹Direct technical strategy, ensuring architectural health, consistency, and integrity across the development lifecycle
• ▹Drive development from concept and design through coding, integration, testing, deployment, and maintenance
• ▹Design and implement scalable, resilient backend services and APIs that handle large volumes of insurance and geospatial data
• ▹Write clean, well-tested, and maintainable C# / .NET code and enforce high standards through rigorous code reviews
• ▹Collaborate cross-functionally and mentor junior/mid-level developers
• ▹Research, evaluate, and integrate new technologies and methodologies, including AI/ML models, for system innovation
• ▹Diagnose, triage, and resolve production issues, driving root-cause analysis and long-term fixes
• ▹Author clear technical documentation, including API specs and architecture decision records

Requirements

• ▹Strong experience in .NET with professional C# proficiency
• ▹Proven experience developing REST APIs and applying professional design patterns for distributed, high-throughput systems
• ▹Extensive experience with Cloud-Native Architecture (AWS and/or Azure) and containerisation via Docker
• ▹Practical experience with SQL (MSSQL/Postgres), NoSQL (DynamoDb)
• ▹Comprehensive understanding of unit/integration testing and test-driven development
• ▹Proficiency in version control utilising Git
• ▹Professional proficiency in written and verbal English

Nice to have

• ▹Experience with geospatial data processing and knowledge of the Insurance/Reinsurance domains
• ▹Understanding of columnar formats (Parquet), in-process management (DuckDB), and NoSQL technologies
• ▹Practical experience with microservices and container orchestration using Kubernetes
• ▹Proficiency in working within Linux environments and experience in performance profiling and system optimisation
• ▹Familiarity with integrating Large Language Models (LLMs) or other machine learning models

What we offer

• ▹Competitive annual salary
• ▹Annual bonus based on individual and company performance
• ▹Flexible working hours
• ▹Remote work possibility

About the company

KatRisk is an equal opportunity employer committed to creating an inclusive environment where diverse perspectives contribute to better solutions.