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Network security engineer (protocol & architecture)

Dublin
Avast Group
Network security engineer
€100,000 - €125,000 a year
Posted: 13 September
Offer description

Overview

Who Are We? We’re not just a company; we’re a global force—fiercely committed to ensuring that everyone, everywhere, can live digitally safe. Our family of brands—Norton, Avast, LifeLock, Avira, AVG, ReputationDefender, and CCleaner—unites the brightest minds, sharp tech, and diverse thinking to protect over 500 million people. We’ve built an inclusive workplace where your well-being is a priority, because true success comes from balance and authenticity. When you’re thriving, you’re unstoppable. Bring us your bold ideas and relentless passion. The digital world isn’t a distant future—it’s our present. If you’re ready to push boundaries and be part of something bigger, join #TeamGen.


Mission and Goals

We’re looking for a VPN Tech Lead to drive the evolution of our VPN technology—the engine behind Norton Secure VPN and Avast SecureLine VPN. You’ll lead innovation, performance improvements, and protocol development across both client and infrastructure layers. Our team operates at the core of internet privacy, owning protocols such as WireGuard and Mimic (our in-house solution). Your mission: push the boundaries of VPN performance, reliability, and obfuscation—and ensure our tech meets the needs of hundreds of millions of users in a complex, high-scale environment. This role can focus purely on technical leadership (architecture, coding, mentoring) or evolve to include organizational/team leadership—depending on your skills and ambitions.


Responsibilities

1. Design, implement, and evolve VPN protocols and supporting systems—including WireGuard, Mimic, and related infrastructure.
2. Optimize performance, reliability, and scalability across client platforms (mobile/desktop) and backend VPN servers.
3. Collaborate with infrastructure, client, and product teams to align protocol improvements with real-world user needs.
4. Lead deep technical investigations into bottlenecks, protocol anomalies, and production traffic issues.
5. Mentor engineers, champion best practices, and set technical direction for the VPN stack.
6. Drive obfuscation techniques and anti-censorship strategies in network-challenging environments.


Qualifications

1. Strong working knowledge of network protocols, TCP/IP, and VPN technologies (especially WireGuard, OpenVPN, or proprietary protocols).
2. Experience building and debugging high-performance, secure systems.
3. Ability to drive technical projects across both client and infrastructure layers.
4. Effective communication skills and a collaborative mindset.


Nice to Have

* Experience with custom protocol design, obfuscation, or traffic-shaping techniques.
* Background in mobile or desktop VPN client development.
* Experience with containerized deployments (Docker, Kubernetes).
* Familiarity with infrastructure automation or configuration management (e.g., Terraform, Puppet).
* Contributions to open-source security or networking projects.


What We Can Offer

* Annual bonus program.
* Unlimited PTO and flexible working hours.
* The chance to join a major global tech company in the S&P 500.
* Opportunities to learn from and work with leaders in Digital Security.
* Cafeteria points via Benefit Plus (meal plan, pension insurance, travel, leisure activities, Multisport card, and more).
* Tuition reimbursement for job-related courses.
* A personal Learning & Development plan.
* A sustainable home-improvement bonus.

Note: LifeLock identity theft protection is not available in all countries.

Gen is an equal employment opportunity employer. Employment decisions are based on merit, experience and business needs. If this sounds like you, Gen has a dynamic, supportive culture with core values that celebrate inclusion, promote teamwork and encourage every team member to contribute and grow—join us! GenDigital.com.

Gen is a global company dedicated to powering Digital Freedom through its trusted consumer brands including Norton, Avast, LifeLock and more. Our combined heritage is rooted in providing financial empowerment and cyber safety for the first digital generations. We bring award-winning products and services in cybersecurity, online privacy, identity protection and financial wellness to nearly 500 million users in more than 150 countries.

We’re always looking for smart, fearless and dedicated people. Together, we have a collective passion and vision to power Digital Freedom by protecting consumers and helping them grow, manage and secure their digital and financial lives. When you’re part of Gen, you have access to a range of resources and support to ensure you can do your best work and live your best life. This includes flexible working options with generous time off and competitive benefits and compensation packages. Inclusion is foundational to how we do business because we know the greatest ideas and results come from our unique perspectives and differences. We strive to create a safe, inclusive environment where you can bring your whole self to work. Team members are valued, respected and celebrated for who they are in a meaningful and exciting atmosphere. Gen is an equal employment opportunity employer. Employment decisions are based on merit, experience and business needs. If this sounds like you—Gen has a dynamic, supportive culture with core values that celebrate inclusion, promote teamwork and encourage every team member to contribute and grow—join us!

Learn more at GenDigital.com.

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