Senior C# / .NET Developer
Offer summary

(Summary generated by AI based on the full job description)

The project involves development of solutions for a global investment bank. The tech stack includes C#/.NET, Docker, Kubernetes, Microsoft Azure and GitLab CI/CD, with databases Oracle, Sybase or PostgreSQL. Responsibilities cover development and maintenance of microservices and event-driven applications, building and maintaining CI/CD pipelines, cloud deployments and collaboration with development teams to deliver scalable and reliable solutions. Rate is 135–160 PLN/h (B2B), English fluency and right to work in Poland are required.

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Senior C# / .NET Developer

Company: OPTIVEUM SPÓŁKA Z OGRANICZONĄ ODPOWIEDZIALNOŚCIĄ

from: 29 October 2026
to: 28 November 2026
135 - 160 złnet (+ VAT)/ hr.B2B contract (full-time)
Offer parameters
level:senior
working mode:hybrid
location:Kraków, Lesser Poland
Kraków, Lesser Poland

Requirements

Expected technologies

C#
.NET
Microsoft Azure
Oracle
Sybase
PostgreSQL
Docker
Kubernetes
GitLab

Operating system

Windows

Our 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

Your 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

About the project

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)

This is how we organize our work

This is how we work

at the client's siteyou have influence on the technological solutions appliedyou focus on product developmentagilescrum

This is how we work on a project

  • Continuous Deployment
  • Continuous Integration
  • documentation
  • issue tracking tools
  • 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
Interested? Apply now and help a leading Nordic bank stay ahead of security risks!
Company

Development opportunities we offer

  • external training
  • mentoring

Recruitment stages

  • 1.
    IT Partner & Bank Interviews
  • 2.
    Technical Interview & Live Coding
  • 3.
    Background Check
  • 4.
    Identity Verification
  • 5.
    Eligibility Review

OPTIVEUM SPÓŁKA Z OGRANICZONĄ ODPOWIEDZIALNOŚCIĄ

Optiveum is acting as a sourcing partner for this role. You will be signing a cooperation agreement directly with our partner—a renowned IT contracting company with nearly 20 years of presence on the market.
The end client operates in the international public, defense, or government administration sector, leading large-scale, multi-million euro digital transformation projects.

This is how we work

Senior C# / .NET Developer
135–160 zł / hr. (B2B)
I apply to:
OPTIVEUM SPÓŁKA Z OGRANICZONĄ ODPOWIEDZIALNOŚCIĄ
Kraków, Lesser Poland
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