Senior Backend Engineer (UK, Ireland)

JOB DESCRIPTION As a Senior Backend Software Engineer at KatRisk, you will be a pivotal member of our technology team, directly influencing the direction and success of our core platform and client-facing solutions. This is a crucial role where your expertise will ensure the robust development, scalable architecture, and high performance of our mission-critical systems. KEY RESPONSIBILITIES: Technical Strategy: Direct technical strategy, ensuring architectural health, consistency, and integrity across the development lifecycle. Software Development: Drive development from concept and design through coding, integration, testing, deployment, and maintenance. System Design: Design and implement scalable, resilient backend services and APIs that handle large volumes of insurance and geospatial data. Code Quality: Write clean, well-tested, and maintainable C# / .NET code and enforce high standards through rigorous code reviews. Collaboration & Mentorship: Collaborate cross-functionally and mentor junior/mid-level developers to foster a high-performing environment. Innovation: Research, evaluate, and integrate new technologies and methodologies, including AI/ML models, for system innovation. Problem Solving: Diagnose, triage, and resolve production issues, driving root-cause analysis and long-term fixes. Documentation: Author clear technical documentation, including API specs and architecture decision records. The following section is not a rigid checklist. If you don't meet 100% of these points but feel that your experience and mindset align with our mission, we strongly encourage you to apply. REQUIREMENTS Language Expertise: Strong experience in .NET with professional C# proficiency. Architecture: Proven experience developing REST APIs and applying professional design patterns for distributed, high-throughput systems. Cloud & Infrastructure: Extensive experience with Cloud-Native Architecture (AWS and/or Azure) and containerisation via Docker. Data Technologies: Practical experience with SQL (MSSQL/Postgres), NoSQL (DynamoDb). Quality Assurance: Comprehensive understanding of unit/integration testing and test-driven development. Tools: Proficiency in version control utilising Git. Communication: Professional proficiency in written and verbal English. HIGHLY VALUED Geospatial & Domain: Experience with geospatial data processing and knowledge of the Insurance/Reinsurance domains. Advanced Data: Understanding of columnar formats (Parquet), in-process management (DuckDB), and NoSQL technologies. Modern Infrastructure: Practical experience with microservices and container orchestration using Kubernetes. Optimisation: Proficiency in working within Linux environments and experience in performance profiling and system optimisation. AI/ML: Familiarity with integrating Large Language Models (LLMs) or other machine learning models. BENEFITS Competitive annual salary. Annual bonus based on individual and company performance. Flexible working hours. Remote work possibility. DISCLAIMER Final salary and benefits are determined by multiple factors, including location, experience, training, qualifications, and market conditions. COMMITMENT TO INCLUSION KatRisk is an equal opportunity employer. We are committed to creating an inclusive environment where diverse perspectives contribute to better solutions.