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Making difficult things easier, lifting up our peers, and automating all the things – these are just a few things we’re passionate about. Our big […]

Making difficult things easier, lifting up our peers, and automating all the things – these are just a few things we’re passionate about. Our big Infra fam has multiple goals all leading to enabling internal teams to improve their efficiency and providing reliable infrastructure for our products. We’re the experts acquiring the servers around the globe and making sure they all are top-notch. The gurus who solve complex issues covering both client and server sides. 

We’re the front-runners keeping our team’s cybersecurity skills sharp and staying one step ahead of cybercriminals. After all, there’s no challenge that we can’t solve together.

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Low Level Software Engineer (Security Product)




Low Level Software Engineer (Security Product)



Full Time

Here at Tesonet, we’re building a top-notch cybersecurity solution that has dedicated clients around the globe. We’ve already earned our client’s trust and satisfaction by empowering ourselves to develop a cutting-edge and reliable product.

Nord Security is one of those products, or to be more precise - a product family that grew and matured into the advanced cybersecurity tools of today inside the Tesonet accelerator environment.

However, Tesonet is no longer building a top-notch cybersecurity solution itself. Tesonet is an Accelerator now helping to grow various businesses.

NordVPN - fastest VPN on the planet, built to protect your online traffic and privacy with next-generation encryption.

What You Will Do

  • Create clean, maintainable, performant and tested code in C, C++, Go and/or Rust
  • Solve difficult problems in security, performance, and privacy, networking at scale
  • Leave code better than you found it

What We Expect

  • Experience (and love) for debugging to ensure that everything works in all cases
  • Solid knowledge of driver development in one or more OSes - OS X, Linux, Windows
  • Advanced knowledge of networking protocols - TCP/IP v4/v6, DNS, OpenVPN, IPSec/IKEv2, QUIC etc.
  • Solid knowledge of PKI
  • Desire to learn and improve
  • Willing and eager to share knowledge and mentor
  • Don't worry if you don't tick all the boxes we would still be interested in hearing from you!

What We Offer

  • Access to Nord Security products. We build solutions used by millions of users worldwide, and you’ll get to experience our products firsthand;
  • Professional growth. Internal and external events, online training, conferences, books - everything you need to reach full potential;
  • Health benefits. Private health insurance, online and on-site workouts, consultations to feel and be your best;
  • Mental wellbeing. Access to mental health tools like Calm, Headspace, and Mindletic. Options for therapy to keep your emotional wellbeing in check;
  • Team spirit. Team buildings and parties with games, shows, tastings, food coupons, gifts, and it’s on us;
  • More free time. Stay with us and additional vacation days will be added to your calendar;
  • Additional paid leave. Additional days are covered by us in cases of illness or special occasions;
  • Flexibility. Flexible working time arrangement;
  • Gross salary 1650 - 4628 EUR/month.
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