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December 17, 2025

Frontend Developer (with .NET)

Senior • Hybrid

$170 - $180/

Warsaw, Poland

We are seeking a Senior Frontend Developer skilled in .NET to join our client (a leading Nordic financial services company) team.


You’d be working on next-generation digital banking applications, used daily by thousands of customers — helping shape the self-service experience within the main platform.


The candidates should have experience working with large-scale, customer-facing applications, with experience in banking applications or self-service platforms considered a strong plus. They should demonstrate a proven track record as experienced or senior front-end developers and possess a solid understanding of microservices architecture.


The candidates should show a willingness to work on features that combine both front-end and back-end components.


Main Responsibilities:

  • Lead development of new applications.

  • Enhance and maintain existing applications.

  • Recommend design and functionality improvements.

  • Collaborate with UX/UI designers to refine user experiences.

  • Document development processes and outcomes.

  • Adhere to modern development methodologies.


Key Requirements:

  • Experience working with large-scale, customer-facing applications (experience in banking applications or self-service platforms is a strong plus).

  • Proven track record as an Experienced/Senior Front-End Developer.

  • Solid understanding of microservices architecture.

  • Extensive experience in JavaScript, REACT, and .NET technologies.

  • Proficiency in CSS, TypeScript, and SCSS.

  • Understanding of development methodologies, particularly Scrum.

  • Experience with Azure DevOps and API Management.

  • Familiarity with SQL and RESTful APIs.

  • Ability to creatively contribute to design concepts.

  • Strong communication skills and a team-oriented mindset.



Nice to Have:Candidates with the following skills will be given preference:

  • Experience in Agile frameworks such as SAFe.

  • Familiarity with cloud services like Azure.

  • Knowledge of unit testing practices.


Other Details:The selected candidate will join a collaborative team of 5-6 developers, a technical tester, a scrum master, and a product owner. Our client’s work environment is dynamic, emphasizing agile methodologies to meet the evolving needs of our users.