Nord Security

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

Nord Security
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8 hours ago
Warsaw, PolandMid Level / Senior

Responsibilities

  • Design, develop, and maintain Windows applications and system components, including services, IPC, networking, GUI, APIs, and drivers.
  • Collaborate with designers, QA, and the Product Owner to improve product functionality from technical discussions through delivery.
  • Own features end to end by researching solutions, writing maintainable code, and supporting releases.
  • Contribute to architectural decisions and the product’s technical direction.
  • Debug and troubleshoot Windows applications using Windows debugging tools.

Requirements

  • Minimum 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 Git.
  • Strong English language skills.
  • Understanding of TCP/IP, UDP, VPN technologies including OpenVPN, WireGuard, and IPSec, and network security principles is preferred.
  • Understanding of security best practices and a commitment to writing secure code is preferred.

Benefits

  • Training, mentorship, and opportunities for professional growth.
  • Extra vacation days, sick days, and time off when needed.
  • Fully covered private health insurance in Lithuania and Poland.
  • Free Calm, Headspace, and Mindletic subscriptions plus resilience and mindfulness training.
  • In-house gyms, sport cards, online workouts, and personal fitness guidance.
  • Company-wide workation trip abroad.
  • Work-from-anywhere flexibility.
  • Gifts for birthdays, weddings, and new family members.
  • Children’s summer camps and flexible scheduling for parents.
  • Team-building activities and company events.
  • Access to Nord Security’s Vilnius headquarters amenities, including a coffee bar, gyms, children’s room, music room, and massage chairs.

Tech Stack

C#Git.NETWindows

Categories

Nord Security

About Nord Security

1,001-5,000 employees

Nord Security builds consumer and business cybersecurity software under the Nord brand, including NordVPN, NordPass, NordLayer, and NordLocker. It sells subscription-based privacy and network security tools—VPN, zero-trust access, password management, encrypted storage, and threat exposure management—to individuals and companies globally. Founded in 2012 and headquartered in Vilnius, Lithuania, its products serve millions of users.

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