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Infra

5 open positions in 1 location

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.

Open positions in Infra

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Backend Penetration tester (Security Product)

Infra

Security Product

Vilnius

Backend Penetration tester (Security Product)

Infra

Vilnius

Full Time

Back-end Guild Life
Frameworks. Libraries. Databases. Repeat.
We're the ones behind the product, affecting and following how it changes. Providing support in the front row and delivering software-defined solutions into the wild - these are just some of our goals. Our team is passionate about solving complex systems, storage, and network problems using automation and software-defined solutions. If you like technology but don’t want to forget how to talk to people, this is where you belong!



What You Will Do

  • Secure backend applications, networking components, and crypto services. White, grey box or black box – you name it!
  • Show your reverse engineering skills on finding bugs in cutting-edge security solutions;
  • Design and create solutions to complex security issues from scratch;
  • Develop scripts, security automation tools to enhance penetration testing processes;
  • Closely collaborate with backend application developers and other tech geeks to validate, assess, understand the root cause and mitigate vulnerabilities;
  • Spread your security knowledge with hundreds of your colleagues!

What We Expect

  • Proven experience in application security assessment planning, testing and vulnerability reporting;
  • Proficiency using security scanners, static code analyzers, and debuggers;
  • Networking knowledge, SSL/TLS knowledge, ability to explain what ciphers, PFS, keys, PKI, certificates are and what they do;
  • Demonstrated ability to perform manual security code audit;
  • Previous experience with fuzzing, reverse engineering, and exploit development;
  • Experience working with application developers to validate, assess, understand the root cause and mitigate vulnerabilities;
  • Strong knowledge in application and infrastructure testing methodologies;
  • Knowledge in architecture design and assessment (manual approach to penetration testing);
  • Bonus points for community contributions like public CVEs, bug bounty recognition, open-source tools, blogs, etc.

What We Offer

  • Great conditions for work - flexible hours, separate workspaces for teams, no unnecessary distractions;
  • Top-notch technologies and tools to work on world-renowned products;
  • Need to unwind? We have what you need: chill zone, F-1 simulator, table tennis, foosball, basketball, xbox, and more;
  • Professional in-house physiotherapist who will help you take care of your health;
  • Always fully stocked kitchen to fuel your productivity;
  • Professional growth opportunities (training courses of your choice, books, conferences, business trips, etc.);
  • Awesome team. Seriously - the best! We do regular internal events, knowledge sharing talks, team retreats & workation trips like nobody else;
  • Gross salary starting at 2500 EUR/month.

Content Networks Administrator (Privacy Protection Product)

Infra

Privacy Protection Product

Vilnius

Content Networks Administrator (Privacy Protection Product)

Infra

Vilnius

Full Time

Driven by pushing the boundaries of what’s seemingly-impossible and making quality a norm - that’s what we’re passionate about. Not so long ago we were a small crew entering the challenging cybersecurity industry. Well, today we’re respected leaders rocking in the global market and growing at the speed of light.

Our team consists of ambitious professionals who work hard to create the best cybersecurity solutions and outsmart the demanding competition. If you’re looking for the best tech challenge of your life, this is your sign.

What you will do

  • Maintain Video CDN servers;
  • Work on anycast networks;
  • Be responsible for timely DNS provisioning, deployment, network configuration of proxy servers;
  • Work on improving tools for server management.

What we expect

  • 3+ years of experience working with Linux;
  • That you have a clue how network technologies work (can configure HA using anycast);
  • Had a chance to work with monitoring tools (InfluxDB, Telegraf, ElasticSearch, Nagios / Naemon);
  • Know a thing or two about Streaming services  - especially http based protocols would be an advantage;
  • Bash scripting, coding abilities at least with one of the following: PHP, Python, Golang would be a huge plus.

What We Offer

  • Great conditions for work - flexible hours, spectacular view of a river on your side;
  • Top-notch technologies and tools to work on world-renowned products;
  • Need to unwind? We have what you need: chill zone, table tennis, xbox, and more;
  • Professional growth opportunities (training courses of your choice, books, global conferences, business trips, etc.);
  • Awesome team. Seriously - the best! We do regular internal events, knowledge sharing talks, team retreats & workation trips like nobody else;
  • Gross salary starting at 2300 EUR/month. The final offer will be based on your competence and experience! 

Engineering Manager (Security Product)

Infra

Security Product

Vilnius

Engineering Manager (Security Product)

Infra

Vilnius

Full Time

Back-end Guild Life
Frameworks. Libraries. Databases. Repeat.
We're the ones behind the product, affecting and following how it changes. Providing support in the front row and delivering software-defined solutions into the wild - these are just some of our goals. Our team is passionate about solving complex systems, storage, and network problems using automation and software-defined solutions. If you like technology but don’t want to forget how to talk to people, this is where you belong!

What You Will Do

  • Lead a team of passionate, talented engineers who are building innovative cybersecurity products that reach millions of users each day;
  • Introduce tools and processes to make our engineer’s lives better;
  • Play an active part in shaping product based on what's technically possible;
  • Thrive in a fast-paced iterative engineering environment and implement your previous experience in delivering scalable systems;
  • Make sure our company hits our ambitious goals from an engineering standpoint;
  • Track record of having past teams respect you as both a technical leader and manager;
  • Bring a passion for meeting business needs with building technically innovative solutions and excel at shifting between the two - understanding how big-picture goals inform technical details, and vice-versa.

What We Expect

  • 3+ years of experience in engineering management;
  • Solid foundation in computer science, with strong competencies in algorithms, data structures, software design, and building large systems;
  • Excellency at planning, creating teams and overseeing execution to meet commitments and deliver with predictability;
  • Demonstrated track record of managing a team including hiring, onboarding, and professional development: you're as good as explaining "why" as you are "how";
  • Experience in implementing tools, process, internal instrumentation, methodologies and resolving blockages;
  • Ability to manage teams/projects with tight deadlines and short release cycles;
  • Experience with VPNs and/or Internet security is a great plus;
  • Familiarity working with C/C++/Go/Rust would be a great bonus.

What We Offer

  • Great conditions for work - flexible hours, separate workspaces for teams, no unnecessary distractions;
  • Top-notch technologies and tools to work on world-renowned products;
  • Need to unwind? We have what you need: chill zone, F-1 simulator, table tennis, foosball, basketball, xbox, and more;
  • Professional in-house physiotherapist who will help you take care of your health;
  • Always fully stocked kitchen to fuel your productivity;
  • Professional growth opportunities (training courses of your choice, books, conferences, business trips, etc.);
  • Awesome team. Seriously - the best! We do regular internal events, knowledge sharing talks, team retreats & workation trips like nobody else;
  • Gross salary starting at 3500 EUR/month.

Infrastructure Capacity Analyst (Privacy Protection Product)

Infra

Privacy Protection Product

Vilnius

Infrastructure Capacity Analyst (Privacy Protection Product)

Infra

Vilnius

Full Time

Driven by pushing the boundaries of what’s seemingly-impossible and making quality a norm - that’s what we’re passionate about. Not so long ago we were a small crew entering the challenging cybersecurity industry. Well, today we’re respected leaders rocking in the global market and growing at the speed of light.

Our team consists of ambitious professionals who work hard to create the best cybersecurity solutions and outsmart the demanding competition. If you’re looking for the best tech challenge of your life, this is your sign.

What you will do

  • Fix server load related issues from the capacity point of view;
  • Design, maintain and constantly improve the capacity management process;
  • Perform monthly & ad-hoc reporting and capacity related incident reviews;
  • Minimize the adverse effects on the business due to problems caused by capacity related issues;
  • Provide trend analysis and present improvement plans specific to performance and capacity of systems.

What we expect

  • 3+ years experience working with Linux servers;
  • Familiar with capacity planning and management;
  • Had worked with big databases (SQL and noSQL);
  • Strong analytical skills;
  • A can-do attitude and a willingness to learn and help.

What We Offer

  • Great conditions for work - flexible hours, spectacular view of a river on your side;
  • Top-notch technologies and tools to work on world-renowned products;
  • Always fully stocked kitchen to fuel your productivity;
  • Need to unwind? We have what you need: chill zones, ping-pong, and more;
  • Monday meditation sessions to reboot your mind and have a fresh start;
  • Professional growth opportunities (training courses of your choice, books, global conferences, business trips, etc.);
  • Awesome team. Seriously - the best! We do regular internal events, knowledge sharing talks, team retreats & workation trips like nobody else;
  • Gross salary starting at 2300 EUR/month. The final offer will be based on your competence and experience! 

Low Level Software Engineer (Security Product)

Infra

Security Product

Vilnius

Low Level Software Engineer (Security Product)

Infra

Vilnius

Full Time

Back-end Guild Life
Frameworks. Libraries. Databases. Repeat.
We're the ones behind the product, affecting and following how it changes. Providing support in the front row and delivering software-defined solutions into the wild - these are just some of our goals. Our team is passionate about solving complex systems, storage, and network problems using automation and software-defined solutions. If you like technology but don’t want to forget how to talk to people, this is where you belong!


It's innovation time! Growing customer demand requires us to push technology limits. Patching kernel? Sure! Implementing entirely new communications protocol? Why not! At Tesonet we have a rare opportunity to not only use the latest 3rd party tools, but also invent new ones ourselves and make use of them to serve millions of customers.
Ever heard how various Operating systems handle different network components? Ever published app, used by millions to production? Had to invent solutions instead of borrowing older concepts? This work requires fundamental knowledge on how app ecosystem functions, curiosity to figure the details and creativity to make up solutions.

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

  • Great conditions for work - flexible hours, separate workspaces for teams, no unnecessary distractions;
  • Top-notch technologies and tools to work on world-renowned products;
  • Need to unwind? We have what you need: chill zone, F-1 simulator, table tennis, foosball, basketball, xbox, and more;
  • Professional in-house physiotherapist who will help you take care of your health;
  • Always fully stocked kitchen to fuel your productivity;
  • Professional growth opportunities (training courses of your choice, books, conferences, business trips, etc.);
  • Awesome team. Seriously - the best! We do regular internal events, knowledge sharing talks, team retreats & workation trips like nobody else;
  • Gross salary starting at 3500 EUR/month.
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