Key Responsibilities:

You will own the design, development, and maintenance of business-critical software projects, including our reservation engine and integration APIs (SOAP/REST).
You will design the architecture of new projects and lead technical decisions on scalability, performance, and reliability for systems serving for high traffic.
You will participate in development of business needs and improvement of continuity and quality standards, set coding standards, and mentor junior/mid-level developers through code reviews and pair programming.
You will solve complex performance and concurrency problems specific to high-load travel/booking systems.

Qualifications

Must have:

5+ years of professional experience with C# and the .NET ecosystem, including at least 2 years working on high-traffic production systems.
Strong knowledge of .NET Framework / .NET 6+.
Deep understanding of OOP, SOLID principles, Design Patterns, and clean architecture (e.g., layered, hexagonal, or DDD approaches).
Proven experience with TDD and unit/integration testing (xUnit, NUnit, MSTest, Moq).
Strong knowledge of SOAP and REST API design and consumption (XML, JSON), including versioning and integration with third-party systems.
Solid experience with relational databases (MSSQL 2014+, MySQL): query optimization, indexing, and transactions under high load.
Hands-on experience with caching strategies and distributed caching (Redis).
Experience building or maintaining high-traffic, high-availability systems: performance profiling, asynchronous programming, concurrency handling.
Working experience with Git and code review workflows.

Nice to Have:

Experience with ElasticSearch (search-heavy product catalogs are core to our platform).
Knowledge of GraphQL.
Experience with microservices architecture and message brokers (RabbitMQ, Kafka).
Knowledge of CI/CD tools (Jenkins, GitLab/Bitbucket Pipelines, GitHub Actions).
Knowledge/Experience with Docker and Kubernetes.
Experience with ELK Stack (Elasticsearch, Logstash, Kibana) and monitoring tools (Grafana, Prometheus).
Knowledge of NoSQL databases (e.g., MongoDB, Redis as a data store).
Experience in travel, e-commerce, or booking domains.
Passion for clean code and willingness to propose improvements — we are open to ideas, even tech stack changes.

Benefits: