Senior Site Reliability Engineer — Observability Engineer | NordVPN at Nord Security

The world’s most advanced VPN, and a whole lot more.  If you’re 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 planet—tools that put privacy, security, and control back in people’s hands. Your impact? Helping millions take back control of their online security, privacy, and data.  NordVPN runs a global edge infrastructure serving millions of users. Knowing what's happening across that infrastructure - in real time, at scale, without drowning in noise - is what this role exists to solve. We're looking for a Senior Site Reliability Engineer focused on observability: designing monitoring systems, improving signal quality, reducing alert fatigue, and collaborating with data teams on anomaly detection. You'll own how we understand the health and behavior of our distributed systems. Main Responsibilities • Design, build, and improve monitoring pipelines and observability tooling across globally distributed infrastructure • Define and implement service-level monitoring based on golden signals (latency, traffic, errors, saturation) • Reduce alert fatigue - build meaningful, actionable alerts that engineers trust • Develop and maintain custom exporters, scripts, and integrations for metrics and log collection • Collaborate with the data team on anomaly detection and data-driven operational insights • Understand service signals - know what to measure, why, and what the numbers actually mean Core Requirements • Distributed systems observability - monitoring architecture, signal design, dashboarding • Golden signal thinking - you design monitoring around what matters, not what's easy to measure • Alert design - reducing noise, building actionable alerts, managing on-call sanity • Python - scripting, custom exporters, automation, data processing • Linux administration and debugging • Networking fundamentals Bonus Points For • SaltStack • Advanced networking - traffic analysis, protocol-level debugging • Advanced data knowledge - aggregation strategies, downsampling, cardinality management, retention trade-offs • Proven track record of onboarding new systems/services into monitoring from scratch • Familiarity with agentic engineering - Claude Code, LLM integrations, MCP workflows Tools You Will Use • Naemon (Nagios) and Gearmand • Prometheus-based exporters • Telegraf • Fluent Bit • VictoriaMetrics ecosystem • OpenSearch • Grafana Salary Range • Gross Salary 23300 - 34000 PLN/Month. What We Offer Innovate with industry leaders Work alongside global experts to build world-leading cybersecurity tools, impacting millions of users around the world. Learn & grow Boost your skills via our extensive training programs (online and offline) & other resources. Benefit from mentorship and career-switch opportunities to grow within the company.  Hybrid work Enjoy the flexibility with 3 office days and working from home for the remaining 2. Work from anywhere Recharge with a change of scenery – choose work from any location when you feel a need to power your creativity and drive.  Physical well-being Fuel your active lifestyle with online workouts led by our Physical Well-Being experts. Unlock a variety of sports and wellness facilities, like gyms, swimming pools, and fitness classes, with the Multisport card.   Mental & emotional health Nurture your mind with free psychologist consultations, dedicated mental health events, and premium access to top-rated wellness apps like Calm, Headspace, and Mindletic. Premium healthcare Receive private health insurance giving you peace of mind for your health needs.   Joyful moments – special treats Celebrate life’s big moments with special gifts from us on your birthday, anniversary, and other major events, such as weddings or the arrival of a new family member.  Company events & team-building Experience iconic Nord Security celebrations, team-buildings, and knowledge-sharing events, nurturing bonds that fuel our success. Workation Embark on a legendary company getaway abroad, filled with exciting activities, live concerts, engaging workshops, and epic time together. Kindly refer to our Privacy Notice for Recruitment Candidates for comprehensive information regarding our data handling procedures throughout recruitment processes: [Upgrade to PRO to see link] We expect all candidates to provide accurate and complete information during the recruitment process. While limited use of AI tools to refine application materials is acceptable, candidates remain fully responsible for ensuring that their submissions reflect their own qualifications, skills, and experience. Any failure to do so may negatively affect participation in the recruitment process. If broader AI assistance is allowed for a particular role or stage, we’ll let you know in advance. By submitting your application, you acknowledge that it may be processed using automated tools for evaluation purposes. As part of our recruitment process, we may use an AI-based application review tool to help assess applications based on skills and experience relevant to the role. This technology is used to support - not replace - human decision-making, and every application is ultimately reviewed by a recruiter. If you would like more information about how AI is used in this process or wish to exercise your rights under applicable data privacy laws, please contact us at [Upgrade to PRO to see contact]. Should you prefer to opt out of the automated evaluation, please submit your application directly to [Upgrade to PRO to see contact].