Windows Engineer | Mid-Senior | C#/.NET
Confirmed on the employer's own hiring board on Oct 24, 2026. First seen by Alion on Oct 5, 2026. Nord Security scores A on the Alion truth index.
At Nord Security’s B2B team, we build cybersecurity products that enable businesses to protect themselves and their data.
From product and engineering to sales, marketing, and data - our teams work closely together to deliver secure, scalable solutions trusted by companies around the world.
Your impact? Empowering businesses everywhere to keep their people, systems, and data safe.
Main Responsibilities
Design, develop, and maintain Windows applications and system components - Services, IPC, networking, GUI, APIs, and drivers.
Collaborate with designers, QA, and the Product Owner to extend and improve the functionality of our product, from early technical discussions to final delivery.
Take ownership of features end-to-end: research solutions, write clean and maintainable code, and see your work through to release.
Contribute to architectural decisions and help shape the technical direction.
Core Requirements
Proven Experience: minimum 3+ years of experience in Windows application development using .NET.
Windows API Proficiency: deep familiarity with Windows API, including experience with multithreading, inter-process communication, and memory management.
Debugging & Troubleshooting: excellent debugging and troubleshooting skills with experience using Windows debugging tools.
Experience in Agile & Git.
Profound English language skills.
Bonus Points For
Good understanding of networking protocols (TCP/IP, UDP), VPN technologies (OpenVPN, WireGuard, IPSec), and network security principles.
Good understanding of security best practices and a commitment to writing secure code.
What We Offer
Sharpen your edge: training, mentorship, and room to grow - always.
Take the time you need: extra vacation days, sick days, and time off when life calls.
Get premium healthcare: private health insurance in Lithuania and Poland - fully covered.
Protect your peace: enjoy free subscriptions to Calm, Headspace, and Mindletic, and our own resilience and mindfulness trainings.
Own your fitness: in-house gyms, sport cards, online workouts, and personal guidance - on us.
Pack your bags for workation: experience our company-wide trip abroad to the fullest.
Work from anywhere: work from wherever keeps you in the zone.
Celebrate your milestones: birthdays, weddings, and new family members - all deserve a gift.
Parent with ease: children’s summer camps and flexibility around the schedule - because parenting never pauses.
Join the party: team building and company events people talk about for months.
Unlock Cyber City: coffee bar, open gyms, kids’ room, music room, massage chairs - our Vilnius HQ is yours to enjoy.
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