Backend Developer (.NET)

The position assumes 1 3 to 2 1 CET work schedule.

Responsibilities:

• Designing and implementing complex SQL queries, stored procedures, and database optimizations to support high-performance data operations on the travel platform.
• Architecting and developing event-driven solutions using .NET Core/.NET Framework, including message queues, event sourcing, and asynchronous processing patterns.
• Working with both SQL Server and MongoDB to design efficient data models and queries that handle complex travel domain requirements.
• Developing software that has been tested, integrated, and meets both yours and our high development standards.
• Working with Product Managers/ PO and architects to estimate, plan, test, integrate, and deliver complex, scalable software.
• Creating design documents and documentation to ensure efficient maintenance.
• Exploring and making recommendations based on current trends, techniques, and technologies that could have a positive impact on your work.
• Implementing Redis caching strategies (
  
  , cache-aside, write-through, TTL management) to reduce database load, improve API response times, and handle high read throughput for frequently accessed travel data.

Must-haves:

• Experience with the Microsoft .NET technology stack, including .NET Framework and .NET Core, for 4+ years.
• Expertise in complex SQL Server queries (JOINs, CTEs, window functions, performance tuning).
• Solid experience with MongoDB (aggregation pipelines, indexing, schema design).
• Experience with event-driven architecture and message brokers (RabbitMQ or Azure Service Bus).
• Experience with Entity Framework Core and understanding of ORM performance implications.
• Strong experience working with legacy codebases and migrating to microservices architecture.
• Experience with Azure Cloud services (Azure SQL, Cosmos DB, Azure Functions, Service Bus).
• Hands-on experience with Redis caching strategies (cache-aside, write-through, TTL).
• Strong problem-solving skills and the ability to work independently.
• Experience collaborating with PMs and architects on planning and delivery.
• Level of English – from Upper-Intermediate and above.

Nice-to-haves:

• Experience with Angular 1 7+ for full-stack capabilities.
• Experience in the travel industry or with booking/reservation systems.
• Experience building SPAs, specifically with Blazor.
• Knowledge of Docker, Kubernetes, and containerized deployments.
• Exposure to version control software (GitHub preferred).

Reasons why this job would be interesting to you:

• Experience in teamwork with leaders in FinTech, Healthcare, Retail, Telecom, and others. Andersen cooperates with such businesses as Samsung, Siemens, Johnson & Johnson, BNP Paribas, Ryanair, Mercedes, TUI, Verivox, Allianz, T-Systems, etc..
• The opportunity to change the project and/or develop expertise in an interesting business domain.
• Job conditions – you can work both fully remotely and from the office or can choose a hybrid variant.
• Guarantee of professional, financial, and career growth! The company has introduced systems of mentoring and adaptation for each new employee.
• The opportunity to earn up to an additional 1, 0 0 0 EUR per month, depending on the level of expertise, which will be included in the annual bonus, by participating in the company's activities.
• Access to the corporate training portal, where the entire knowledge base of the company is collected and which is constantly updated.
• Bright corporate life (parties / pizza days / PlayStation / fruits / coffee / snacks / movies).
• Certification compensation (AWS, PMP, etc).
• Referral program.
• Private health insurance and sports compensation, depending on the type of employment.

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