Senior Windows Engineer – Remote, Secure Desktop Apps

Nord Security; Warszawa; On-site; PLN 240,000 - 360,000; Full time

Benefits offered by this job

Global experts

Mentorship

Work from anywhere

Health insurance

Mental health support

Wellness apps

Team events

Workation

Fitness facilities

Birthday gifts

Job summary

Nord Security is seeking an experienced .NET (C#) Developer to join the team building a flagship Windows desktop application. You will work across the full stack, delivering performance, security, and an excellent user experience.

You will collaborate with designers, QA, and a Product Owner in a supportive team, using Microsoft technologies and exploring beyond .NET when needed to deliver top solutions.

Qualifications

• 5+ years of experience in software development as .NET (C#) Dev.
• Solid understanding of WPF and creating Windows desktop applications.
• Ability to work with Windows native APIs, with focus on performance, memory management and stability.
• Good understanding of event streams, working with real time data and using reactive extensions to process it.
• Solid foundation in OOP and design patterns — you design architecture that is clean, scalable, and maintainable.
• Experience with unit testing, dependency injection, and robust CI/CD practices.
• Strong problem-solving skills - able to quickly understand complex codebases, work with native APIs, and deliver solutions.

Responsibilities

• Develop and maintain our flagship Windows desktop application that works with Windows File System.
• Work across the full application stack, delivering best-in-class performance, security, and user experience.
• Collaborate closely with developers, designers, QA engineers, and a Product Owner in a highly skilled and supportive team.
• Use Microsoft technologies and tools to extend, optimize, and improve application functionality.
• Actively participate in planning, design discussions, code reviews, and problem-solving sessions.
• Explore and integrate technologies beyond .NET when needed to deliver the best solutions.

Skills

C#

WPF

Windows APIs

Real-time data

OOP & design patterns

Unit testing & CI/CD

Tools

CI/CD pipelines

Job description

Nord Security is seeking an experienced .NET (C#) Developer to join the team building a flagship Windows desktop application. You will work across the full stack, delivering performance, security, and an excellent user experience.

You will collaborate with designers, QA, and a Product Owner in a supportive team, using Microsoft technologies and exploring beyond .NET when needed to deliver top solutions.