Application Security Engineer Senior

The worlds most advanced VPN, and a whole lot more.

If youre a curious problem-solver who carves their own path, join the team behind Threat Protection Pro, the NordLynx protocol, and the fastest VPN on the planettools that put privacy, security, and control back in peoples hands.

Your impact? Helping millions take back control of their online security, privacy, and data.

• Ensure software design security and define secure implementation practices by syncing with teams responsible for the actual product development.
• Ensure that security-related communication between technical teams involved in releasing the product is smooth (act as a glue between all teams so everyones on the same page);
• Plan and manage development of security tools within the team;
• Create tasks for the product's security reviews (SAST/DAST/SCA results, application security testing, etc.).
• Cooperate with product teams to learn about changes introduced into the product early to make educated security decisions.
• Ensure mobile/desktop applications and browser extensions are sufficiently tested.
• Support internal and external audits;
• Design and deliver training for security engineering awareness & adoption.
• Actively look for internal security gaps within the product or organization overall.
• Address security questions and give advice regarding the direction of the product's security.

• Proven experience in mobile/desktop applications security assessment: planning, testing, methodologies, and vulnerability reporting;
• Good understanding of how networks work (OSI and TCP/IP models) with a particular focus on VPNs;
• Experience working with stakeholders to define the scope of security tests and identify remediation actions to address any vulnerabilities identified;
• Knowledge of secure coding practices;
• Sense of ownership with strong problem-solving and investigation skills;
• Experience with different OS (Linux, Android, iOS, macOS, Windows) security topics;
• Ability to build and maintain relationships, influence key stakeholders across the business;
• Ability to make product-related business decisions based on threats and vulnerabilities affecting it;
• A healthy dose of assertiveness combined with an ability to compromise.

• Sharpen your edge Growth is built into how we work. Extensive online and in-person training programs, access to platforms like Coursera and Skillshare, a mentorship program, and internal career moves when youre ready for something new your development has no ceiling here.
• Take the time you need Rest isnt a reward its part of the deal. Enjoy extra vacation days that grow with your time here, plus additional days off for sick leave, special occasions, and parenting.
• Get premium healthcare Your health shouldnt be something you worry about. We provide premium private health insurance so you have peace of mind and fast access to care whenever you need it. Available in Lithuania and Poland.
• Protect your peace A peaceful mind isnt a luxury its the foundation. We provide free subscriptions to top-rated Calm, Headspace, and Mindletic apps, offer resilience and mindfulness trainings, and run dedicated mental health events.
• Own your fitness Feeling good shapes how you work, think, and create. Thats why we offer in-house gyms, Multisport and Urban Sport cards, and online workouts. Need something tailored? Our Physical Well-Being experts are here with group mobility sessions, fitness guidance, and one-on-one consultations.
• Pack your bags for workation Picture this: the entire company flies out abroad. The days are packed with workshops, activities, concerts, and real time together. Its legendary. If youve heard stories, theyre probably true.
• Work from anywhere New surroundings spark new thinking. When you need a reset, switch location and work from wherever keeps you sharp, creative, and in the zone.
• Celebrate your milestones The moments that make life special shouldnt pass quietly. Birthdays, work anniversaries, weddings, new family members each is marked with a special gift.
• Parent with ease When youre a parent, the juggle is real. To make it smoother, we organize summer camps for the little ones and offer flexibility that lets you show up both for your family and your team.
• Join the party It never gets boring here. Get ready for team buildings that bring people closer, year-round company events that are equal parts educational and energizing, and the highlights everyone waits for our iconic summer and winter celebrations.
• Unlock Cyber City Whether Vilnius-based or visiting from remote, our Vilnius HQ is fully yours to enjoy. Need focus? Silent room. Need energy? Open gyms. Need a break? Game room, music room, coffee bar. Its a modern workspace built with your comfort in mind.