Senior C#/.NET Developer for integrations
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Summary
Senior C#/.NET developer in Warszawa building system integrations: designing REST APIs, web services, and connections between enterprise applications, SaaS platforms, and external systems, backed by strong SQL, cloud, CI/CD, and production-support practices.
- 6+ years of professional software development experience, ideally with enterprise or business-critical applications.
- Strong hands-on experience with C# and .NET.
- Strong SQL and relational database skills, including data modelling, query optimization, and debugging.
- Proven experience designing and developing REST APIs, web services, and system integrations.
- Experience integrating enterprise applications, SaaS platforms, and external systems.
- Experience with automated testing, source control, code reviews, and CI/CD practices.
- Working knowledge of cloud environments and distributed systems.
- Experience supporting production applications and resolving complex technical issues.
- Strong analytical and problem-solving skills.
- Good communication skills and the ability to work effectively with business stakeholders and technology teams.
Nice to Have
- Experience with HR, Payroll, Finance, or other enterprise business systems.
- Experience with cloud migration and legacy application modernization.
- Experience with AI-assisted software development tools.