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Offer summary
(Summary generated by AI based on the full job description)
The project involves building and supporting web applications for an EU institution using .NET 8/.NET Core, C#, ASP.NET Core and React, TypeScript. Responsibilities include design, development, testing, deployments, release management and 3rd-line production support, plus performance and security optimization. Key tools are Entity Framework, SQL Server, Azure DevOps pipelines, containers/OpenShift and SAML 2.0/Entra ID. Rate up to 32 EUR/h net (B2B). Required 6+ years IT experience, EU citizenship and English at least B2 with fluent Polish.
Senior Full-Stack .NET Developer
Company: OPTIVEUM SPÓŁKA Z OGRANICZONĄ ODPOWIEDZIALNOŚCIĄ
from: 23 October 2026
to: 22 November 2026
salary not specifiedB2B contract (full-time)
Offer parameters
level:senior
working mode:full office
location:Warszawa, Masovian
Warszawa, Masovian
Requirements
Expected technologies
.NET
C#
React.js
TypeScript
Entity Framework
SQL
Azure DevOps
Docker
Kubernetes
Optional technologies
PowerShell
Operating system
Windows
Linux
Our requirements
- EU citizenship
- 6+ years of IT experience, including 3+ years in a similar development role
- Strong experience with .NET 8 / .NET Core, C# and ASP.NET Core
- React and TypeScript on the front end
- Entity Framework and SQL Server
- Azure DevOps pipelines
- Experience with OpenShift / containers
- Knowledge of SAML 2.0 / Entra ID authentication
- Agile/Scrum experience
- An advanced software development certification
- English at least B2 and fluent Polish
Optional
- Hands-on experience with several PAM capabilities, such as Privilege Cloud, WPM, EPM and Vendor PAM
- Experience with PAM integrations, APIs and automation
- Experience in a GxP-regulated environment, ideally in pharmaceuticals or life sciences, including change control, validation and qualification, and audit trails and compliance documentation
- Experience with ServiceNow, SIEM integrations, PowerShell, Linux and SSH
- Relevant CyberArk or Idira certifications
Your responsibilities
- Designing, developing and maintaining enterprise web applications
- Building and supporting solutions in .NET (C#, ASP.NET Core) and React (TypeScript)
- Translating business requirements into technical solutions
- Taking part in testing, deployment, release management and production support
- Optimising application performance, security and quality
- Producing technical documentation and providing 3rd-line support
About the project
We are currently looking for a Senior Full-Stack .NET Developer to join the team of our client, a European Union institution based in Warsaw. You will design, develop and support enterprise web applications built on .NET and React, from translating business requirements into technical solutions through to deployment, release management and 3rd-line production support. For this role, Optiveum is the recruitment partner, and the cooperation agreement will be signed directly with our contracting partner.
Key Details:
Rate: up to 32 EUR/h net (B2B)
Work Model: on-site/near-site in Warsaw, full-time (40 h/week)
Location: Warsaw
Important: EU citizenship is required for this role
This is how we organize our work
This is how we work
you focus on a single project at a timeyou have influence on the technological solutions appliedyou focus on product developmentagilescrum
Team members
backend developerfrontend developertechnical leaderdevOpsproduct ownerproject managerscrum master
This is how we work on a project
- code review
- Continuous Integration
- DevOps
- testing environments
- unit tests
Interested? Apply now and help a leading Nordic bank stay ahead of security risks!
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 Full-Stack .NET Developer
I apply to:
OPTIVEUM SPÓŁKA Z OGRANICZONĄ ODPOWIEDZIALNOŚCIĄ
Warszawa, Masovian
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