Windows Engineer · Mid-Senior · C#/.NET

at Nord Security

📍 Warsaw, Poland

PLN 237,600-400,800 per year

MIDDLE SENIOR

✅ Hybrid

Tech Stack
Tag name is followed by "@" symbol and proficiency level value. About proficiency levels:

1-2 — basic awareness. Minimal hands-on experience, and a rudimentary understanding of the technology's purpose;

3-6 — daily use. Comfortable and regular usage, capable of handling common tasks and challenges related to the technology;

7-9 — you are an expert, you can teach others, you know all the pitfalls and tricks;

10 — exceptional knowledge, comprehensive understanding, and adeptness in all aspects of the technology, including advanced problem-solving. Think twice before claiming or demanding such level.

API @ 2 Agile @ 3 Communication @ 2 Debugging @ 3 Git @ 3 Marketing Networking @ 3 Security @ 3

Details

At Nord Security’s B2B team, you will help build cybersecurity products that enable businesses to protect themselves and their data. The team works across product, engineering, sales, marketing, and data to deliver secure, scalable solutions trusted by companies worldwide.

Responsibilities

Design, develop, and maintain Windows applications and system components, including services, IPC, networking, GUIs, APIs, and drivers.
Collaborate with designers, QA, and the Product Owner to extend and improve product functionality, from early technical discussions through final delivery.
Take ownership of features end-to-end: research solutions, write clean and maintainable code, and see work through to release.
Contribute to architectural decisions and help shape the technical direction.

Requirements

At least 3 years of experience in Windows application development using .NET.
Deep familiarity with the Windows API, including multithreading, inter-process communication, and memory management.
Excellent debugging and troubleshooting skills, with experience using Windows debugging tools.
Experience with Agile and Git.
Proficient English language skills.

Bonus Skills

Understanding of networking protocols, including TCP/IP and UDP.
Experience or knowledge of VPN technologies such as OpenVPN, WireGuard, and IPSec.
Understanding of network security principles and security best practices.
Commitment to writing secure code.

Benefits

Online and in-person training, access to Coursera and Skillshare, mentorship, and internal career opportunities.
Extra vacation days, sick leave, special-occasion leave, and parenting leave.
Premium private health insurance, available in Lithuania and Poland.
Free subscriptions to Calm, Headspace, and Mindletic, along with resilience and mindfulness training and mental health events.
In-house gyms, Multisport and Urban Sport cards, online workouts, mobility sessions, fitness guidance, and consultations.
Company workations abroad.
The opportunity to work from different locations.
Gifts for birthdays, work anniversaries, weddings, and new family members.
Summer camps for children and flexible working arrangements for parents.
Team-building activities and company events.
Access to Nord Security’s Vilnius headquarters and its facilities, including silent rooms, gyms, a game room, a music room, and a coffee bar.