Senior C# / .NET Developer
Confirmed on the employer's own hiring board on Oct 30, 2026. First seen by Alion on Oct 28, 2026.
Senior C# / .NET Developer
About the Offer
We are currently looking for a Senior C# / .NET Developer to join the team of one of the world's leading global investment banks. The project is delivered together with a large international IT services company. For this role, Optiveum is the recruitment and contracting party, which means you will sign the cooperation agreement directly with us.
You will develop and maintain C#/.NET applications built as microservices and event-driven solutions, running on Docker and Kubernetes in Microsoft Azure and delivered through GitLab CI/CD.
Key Details:
Rate: 135-160 PLN/h (B2B), depending on experience
Work Model: Hybrid, 3 days per week from the client's office (non-negotiable), full-time
Location: Kraków (candidates must live in or near Kraków)
Responsibilities:
Develop and maintain applications using C#/.NET
Design and implement microservices and event-driven solutions
Develop and support cloud-based applications on Microsoft Azure
Work with Oracle, Sybase or PostgreSQL databases
Build, deploy and maintain applications using Docker and Kubernetes
Create and enhance GitLab CI/CD pipelines
Collaborate with development teams to deliver scalable and reliable solutions
Requirements:
8+ years of commercial software development experience
Strong experience with C#/.NET
Experience with microservices and event-driven architecture
Experience working with Microsoft Azure
Knowledge of Oracle, Sybase or PostgreSQL databases
Experience with Docker and Kubernetes
Experience with GitLab CI/CD pipelines
Knowledge of software development and deployment best practices
Fluent English
Polish or EU citizenship, or a permanent residence / work permit valid for at least 12 months
Recruitment Process:
One interview with the IT services partner, followed by 1-3 interviews with the bank
Technical tasks are done live: please have your programming environment set up and tested beforehand. The use of AI tools, coding assistants or code generators during interviews is not allowed
The selected candidate will go through a background check by an external company (HireRight), covering identity, right to work, education and employment history, so the dates and employers in your CV must be accurate
Your name in the application and CV must match your official ID document exactly (Polish citizens: please include all first names)
Candidates who took part in a recruitment process for this IT services partner or this bank in the last 12 months cannot be considered