Backend Developer (.NET)

Quick Facts

• Backend Developer (.NET)
• Project: scalable travel platform integrating multiple suppliers and aggregator APIs into a unified digital ecosystem
• Schedule: 13 to 21 CET

Description

You will design and build backend capabilities for a travel platform that enables seamless availability, booking, and cancellation through reliable data mapping, normalization, and synchronization, supporting high-performance travel product distribution. Focus is on scalability, integration reliability, and performance.

Responsibilities

• Design and implement complex SQL queries, stored procedures, and database optimizations for high-performance data operations
• Architect and develop event-driven solutions in .NET (message queues, event sourcing, asynchronous processing)
• Work with SQL Server and MongoDB to design efficient data models and queries for complex travel domain requirements
• Develop software that is tested, integrated, and meets strong development standards
• Collaborate with Product Managers/PO and architects to estimate, plan, test, integrate, and deliver complex scalable software
• Create design documents and documentation for efficient maintenance
• Explore and recommend current trends, techniques, and technologies to improve work outcomes
• Implement Redis caching strategies (cache-aside, write-through, TTL management) to reduce database load and improve API response times

Requirements

• 4+ years of experience with the Microsoft .NET technology stack, including .NET Framework and .NET Core
• 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 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 ability to work independently
• Experience collaborating with PMs and architects on planning and delivery
• English level: Upper-Intermediate and above

Benefits

• Fully remote or hybrid work options
• Professional, financial, and career growth
• Mentoring and adaptation systems for new employees
• Up to an additional 1,000 EUR per month bonus based on expertise level and company activities
• Corporate training portal with a continuously updated knowledge base
• Positive corporate culture (events and perks)
• Certification compensation (e.g., AWS, PMP)
• Referral program
• Private health insurance and sports compensation (depending on employment type)