Senior .Net Backend Engineer

<p>N-iX is looking for a talented<strong> Senior .Net Engineer</strong> to join our team!&nbsp;&nbsp;</p> <p><strong>Our client</strong> is one of Europe's fastest-growing mobile companies with 6 million active customers, 1,000 employees worldwide, and operations in five countries. The client is using the mobile virtual network operator business model.&nbsp;We are looking for a Senior .NET Engineer who combines strong technical expertise with a product mindset, proactive problem-solving, and end-to-end ownership of delivery.</p> <p><strong>Responsibilities:</strong></p> <ul> <li>Take end-to-end ownership of features and services, from requirements clarification and technical design through implementation, testing, deployment, and production support.</li> <li>Deliver reliable, scalable, and maintainable back-end solutions using modern .NET technologies and engineering best practices</li> <li>Understand business requirements, product objectives, and customer impact to make pragmatic technical decisions and deliver business value</li> <li>Collaborate closely with Product Owners, Business Analysts, QA Engineers, DevOps, Support Engineers, Architects, Infrastructure and DB Engineers, and other teams to ensure successful delivery</li> <li>Proactively identify and address technical risks, dependencies, blockers, and potential delivery challenges</li> <li>Contribute to system design, architectural decisions, technical improvements, and ongoing platform modernisation</li> <li>Take ownership of production issues, troubleshooting, root-cause analysis, and improvements to system reliability and performance</li> <li>Ensure high engineering quality through code reviews, automated testing, observability, and continuous improvement</li> <li>Confidently communicate in a multinational environment, communication is in English.</li> <li>Design, build, and maintain performant, efficient, reusable, and reliable code</li> <li>Translate business logic into code and automate business processes</li> <li>Support and mentor other engineers, share knowledge, and promote engineering best practices</li> </ul> <p><strong>Requirements:</strong></p> <ul> <li>6+ years of commercial .NET development in Microservice environment</li> <li>Strong knowledge of modern .NET (8/9 or later)</li> <li>Web API, ASP.NET Core, Microservices</li> <li>Strong experience with SQL, MS SQL Server, Entity Framework, and database performance optimisation</li> <li>Good understanding of Docker, Kubernetes, and containerised application environments</li> <li>Solid understanding of software architecture, microservices, design patterns, SOLID principles, and clean code practices</li> <li>Hands-on experience with Microsoft Azure Cloud</li> <li>Experience with Messaging or Evening (ServiceBus, RabbitMQ, EventHub, Kafka,. Etc.)</li> <li>Experience designing and integrating REST APIs, SOAP and third-party services.</li> <li>Hands-on experience with serverless architectures and cloud functions (Azure Functions, AWS Lambda)</li> <li>Experience with automated testing, CI/CD practices, and production troubleshooting</li> <li>Strong problem-solving skills, proactive communication, and the ability to identify risks and propose solutions</li> <li>Being result-oriented, ability to get things done</li> <li>Excellent verbal and written English communication skills, with the ability to confidently lead technical discussions, articulate complex topics, challenge decisions constructively, and communicate effectively with both technical and non-technical stakeholders</li> </ul> <p><strong>Would be a plus:</strong></p> <ul> <li>Production experience with durable-execution, stateful distributed-systems platform (Microsoft Orleans, Temporal, Azure Durable Task Framework, Akka, Dapr Actors, Cadence, Netflix Conductor, Erlang/OTP)</li> <li>Day-to-day responsibilities involves dealing with long-running workflows, stateful coordination, distributed execution, failure recovery, retries, idempotency in production</li> <li>Serious experience in Event Driven Architecture</li> <li>Experience with microservice practices, i.e. Service mesh, Blue/Green deployments, ArgoCD, etc.</li> <li>Experience with Stored procedures in MS SQL</li> <li>Experience with .Net Native AOT</li> <li>Experience with Monitoring (Azure Application Insights, Open Telemetry, etc.)</li> <li>Azure LogicApps, API Apps, AKS, Redis</li> <li>Experience integrating with Microsoft Dynamics CRM or similar enterprise systems</li> <li>Experience working with high-availability, business-critical, or transaction-processing systems</li> </ul><div class="content-conclusion"><p><strong>We offer*:</strong></p> <ul> <li>Flexible working format - remote, office-based or flexible</li> <li>A competitive salary and good compensation package</li> <li>Personalized career growth</li> <li>Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more)</li> <li>Active tech communities with regular knowledge sharing</li> <li>Education reimbursement</li> <li>Memorable anniversary presents</li> <li>Corporate events and team buildings</li> <li>Other location-specific benefits</li> </ul> <p>*not applicable for freelancers</p></div>