Wallet – Senior Backend Software Engineer
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Summary
Senior backend engineer at Betsson Group in Budapest designing and building distributed wallet services with .NET and event-driven microservices. Day to day: optimizing performance, reliability and observability, driving containerization and cloud migration on AWS/Kubernetes, leading architecture decisions, and sharing on-call duties.
- Design and develop distributed backend services using .NET and event-driven architecture
- Collaborate with product and commercial teams to turn engagement ideas into scalable, maintainable, and user-friendly solutions
- Optimize microservice ecosystem for performance, reliability, and observability
- Drive containerization and cloud migration strategy forward
- Participate in architecture discussions and help shape technical decisions
- Lead architectural decisions and proactively identify areas for improvement
- Write maintainable, well-tested code and conduct code reviews
- Participate in incident resolution and the team’s on-call rotation
- Maintain clear technical documentation such as ADRs, runbooks, and guidelines
- Build and share domain expertise within the team
- Experience with C# and .NET (modern versions after .NET Core)
- Experience with SQL Server, PostgreSQL, Redis, Couchbase including indexing and query optimization
- Experience with AWS, Kubernetes, Docker or any major cloud provider or containerization platform
- Understanding of unit, integration, and performance testing with tools like xUnit/NUnit, mocking frameworks, k6
- Familiarity with Web APIs, Apache Kafka, RabbitMQ, Orleans or any messaging or actor-based system
- Experience with observability tools such as Prometheus, Grafana, Loki, Splunk or similar
- Familiarity with CI/CD pipelines, GitHub Actions, trunk-based development, progressive delivery
- Knowledge of domain-driven design, event sourcing, actor model, distributed systems at planet-scale
- Experience with Agile and Lean principles, DevOps mindset, strong collaboration
- Monthly allowance for lunch
- Private and life plan insurance for employee and family
- Annual wellness allowance
- Team building budget
- Corporate travel insurance
- Events and initiatives both local (quarterly meetings) and global
- Professional development programs and internal career opportunities
- Milestone birthday benefits