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Offer summary
(Summary generated by AI based on the full job description)
The project involves development of systems for managing specialized scientific workflows. Core stack includes .NET and C#, MS SQL and work within the Azure ecosystem. Main responsibilities cover development and maintenance of backend services and APIs, designing data access and persistence solutions, ensuring secure and maintainable architecture, and supporting engineering quality via tests, code reviews and troubleshooting. Compensation: up to 35 EUR/h (B2B). Additionally valued: Azure AD (Entra), GitHub pipelines/CI/CD and knowledge of Vue 3.
Senior .NET Backend Engineer
Company: OPTIVEUM SPÓŁKA Z OGRANICZONĄ ODPOWIEDZIALNOŚCIĄ
from: 15 September 2026
to: 15 October 2026
salary not specifiedB2B contract (full-time)
Salary details
Rate: Up to 35 EUR/h (B2B)
basic salary
Offer parameters
level:senior
working mode:hybrid
location:Warszawa, Masovian
Warszawa, Masovian
Requirements
Expected technologies
.NET
C#
Microsoft Azure
Optional technologies
Azure Active Directory
Operating system
Windows
Our requirements
- Strong, hands-on experience with .NET and C#.
- Solid MS SQL skills, including working with relational data models and queries.
- Experience in developing or operating solutions in Microsoft Azure.
- Fluent English (B2B/international environment).
Optional
- Experience with Microsoft Entra ID (Azure Active Directory).
- Experience with GitHub pipelines and CI/CD practices.
- Experience with Vue 3 (frontend experience is not essential but will be considered a strong advantage).
Your responsibilities
- Develop and maintain backend services and APIs using .NET and C#.
- Design and implement reliable data access and persistence solutions using MS SQL.
- Contribute to a secure and maintainable application architecture.
- Collaborate with product, frontend, and domain colleagues to translate user needs into effective technical solutions.
- Support engineering quality through testing, code reviews, troubleshooting, and continuous improvement.
- Contribute to delivery and deployment practices within the Azure ecosystem.
About the project
We are looking for a Senior, backend-focused .NET Engineer based in Poland to join our international client's team. You will work closely with technical colleagues and stakeholders to develop and maintain backend capabilities that support specialized, scientific workflow management systems.
Please note: Optiveum acts as the recruitment and contracting party for this role. You will sign a B2B cooperation agreement directly with us.
This is how we organize our work
This is how we work
at the client's siteyou focus on a single project at a timeyou develop several projects simultaneouslyyou have influence on the productyou focus on product developmentyou focus on code maintenanceagilescrum
This is how we work on a project
- architect / technical leader support
- team-level deployment
- documentation
- issue tracking tools
- testing environments
What we offer
- Location: 100% Remote (Poland)
- Rate: Up to 35 EUR/h (B2B)
- Mode of work: 100% Remote
Benefits
- remote work opportunities
- integration events
OPTIVEUM SPÓŁKA Z OGRANICZONĄ ODPOWIEDZIALNOŚCIĄ
Optiveum is a recruitment and consulting company created based on our 20-plus years of experience in HR & IT services.
We work for Clients located in Poland and abroad providing our local and international Candidates with Project-based or Permanent job opportunities in a remote or office-based model.
This is how we work
Senior .NET Backend Engineer
I apply to:
OPTIVEUM SPÓŁKA Z OGRANICZONĄ ODPOWIEDZIALNOŚCIĄ
Warszawa, Masovian
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