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Senior Full stack .NET Engineer

Nix

Poland Remote permanent

Posted: January 27, 2026

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Quick Summary

We are seeking a Senior Full Stack .NET Engineer to join our team in Warsaw, Poland, to develop scalable and efficient software solutions using cloud computing.

Job Description

The Client:

The client provides comprehensive operational support and a range of expert services to the world’s leading insurers, brokers, fleet managers and automotive manufacturers. Our 3,300 employees across ten countries deliver exceptional standards on a large scale for over 1,200 clients. We help the global insurance market to handle millions of claims each year in the most cost-effective and efficient ways possible.
The Client is embarking on an exciting and challenging transformation program and our software solutions are a driving force behind this strategy using cloud computing and leading-edge design patterns.

The Role:

This is a great opportunity for an experienced Senior Full Stack Engineer to join our super-motivated Software Development team, being part of one of our existing scrum teams. Each agile team includes technical leadership, development, architecture, quality, product and project management roles. We are looking for a Senior Full Stack Engineer comfortable with C# and Angular, with a proven history of building high-performance apps.

Key Responsibilities:

• Provide knowledge/helping/mentoring to other developers – team philosophy is important for us!

• Work on business requests and development improvements – proactivity is appreciated!

• Develop, test, document and maintain our application back end

• Build scalable and reusable code

• Provide realistic estimates for requests, fixes and new ideas

• Create unit tests

• Write clear and precise technical documentation

• Manage realistic work deadlines

• Participate in all the scrum ceremonies and be part of the team performance and continuous improvement

Knowledge and Experience:

• 5+ years of experience of Microsoft development stack including; .NET C#, SQL Server T-SQL.

• Important: ASP.NET, SQL Server, HTML, CSS, Javascript, Angular, Git, excellent verbal and written communication skills in English.

• Azure, .NET core, SOLID principles, Microservices architecture, Design principles, Angular,Jira.

• Ideally, you will have experience working with Scrum methodology in a variety of contexts; different team sizes, organizational cultures, distributed development, etc.

• A track record of previous experience, including training, conferences, user groups, and self-study, is desirable.

Personal Attributes:

• Self-organising problem solver.

• Able to think outside the box (open thinking).

• Strong ability to work effectively in a team. Collaborating, motivating and energizing others (Team player).

• Encourage and drive others to deliver high-quality, cutting-edge software.

• You will have attention to detail and have a proactive ethos.

• Always looking for continuous improvement.

• Excellent verbal and written communication skills, in English.

We offer*:

• Flexible working format - remote, office-based or flexible

• A competitive salary and good compensation package

• Personalized career growth

• Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more)

• Active tech communities with regular knowledge sharing

• Education reimbursement

• Memorable anniversary presents

• Corporate events and team buildings

• Other location-specific benefits

*not applicable for freelancers

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