Nord Security
Nord Security
1,001 – 5,000 Employees
B2BCybersecuritySaaS
Nord Security develops subscription software for digital privacy and cybersecurity across consumer and business use cases. Its portfolio includes NordVPN for private browsing and threat protection, NordLayer for business network security, NordPass for password management, NordLocker for encrypted cloud storage and sharing, Coveron for identity theft protection, and Saily for secure eSIM connectivity while traveling. The company operates across cybersecurity, SaaS, and B2B markets, with products centered on encryption, online privacy, secure access, data protection, and identity monitoring.

Senior Go Backend Engineer in Warsaw (Hybrid)

Build backend services for Saily’s global eSIM connectivity product using Go and microservices. Drive personalization, experimentation, analytics, and reliable API development.

Description

  • Design and build a sophisticated microservices platform for a new eSIM product.
  • Develop capabilities for multidimensional personalization, A/B testing, and analytics.
  • Create and maintain a high-quality codebase.
  • Improve application performance and code quality continuously.
  • Mentor colleagues in development best practices and provide technical direction.
  • Help shape the team’s long-term vision and strategic objectives.
  • Contribute to research and development activities as needed.
  • Use AI agents for specification, coding, analysis, testing, and iteration.
  • Partner with a cross-functional team to maintain clear, effective communication.
  • Work with engineering, product, and design specialists across other teams.

Requirements

  • At least four years of Go experience, or professional experience with PHP, Python, C#/.NET, Java, or Kotlin.
  • Strong understanding of system design patterns and how to apply them appropriately.
  • Hands-on experience with SQL databases such as MySQL and PostgreSQL.
  • Hands-on experience with NoSQL technologies including Cassandra and Redis.
  • Practical experience working with Kafka.
  • Experience designing clear, intuitive, and maintainable APIs.
  • Kubernetes and microservices architecture experience is advantageous.
  • A strong product mindset centered on user problems, outcomes, and measurable impact.
  • Curiosity about AI and enthusiasm for working with AI agents.

Benefits

  • Training, mentoring, and opportunities for professional development.
  • Additional vacation and sick days, plus time off for important personal needs.
  • Fully covered private health insurance in Lithuania and Poland.
  • Complimentary Calm, Headspace, and Mindletic subscriptions.
  • Resilience and mindfulness training.
  • In-house gyms, sports cards, online workouts, and personal coaching.
  • A company-wide trip abroad or workation.
  • Flexibility to work wherever you are most productive.
  • Gifts for birthdays, weddings, and new family members.
  • Children’s summer camps and flexible scheduling.
  • Team-building activities and company events.
  • Access to Vilnius headquarters amenities, including a coffee bar, gyms, children’s room, music room, and massage chairs.

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