Senior Site Reliability Engineer – VPN Service

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Nord Security

WebsiteLinkedInAll Job Openings

1001 - 5000 employees

🔒 Cybersecurity

☁️ SaaS

🤝 B2B

💰 $100M Private Equity Round - Nord Security on 2023-09

Cybersecurity • SaaS • B2B

Nord Security is a software company that provides digital privacy and cybersecurity products for individuals and businesses. Its product suite includes NordVPN (VPN and integrated antivirus), NordLayer (business VPN and browser for SMBs), NordPass (password manager), NordLocker (end-to-end encrypted cloud storage), Coveron (identity theft protection), and Saily (an eSIM travel app with built-in security features). The company focuses on encryption, online privacy, threat protection, secure file storage/sharing, and identity/credit monitoring delivered primarily through subscription software and partnerships with security vendors and MSP-focused services.

📋 Description

• Deploy and manage globally distributed VPN and DNS services • Ensure connection quality, stability, and performance across the entire node fleet • Collaborate with application teams on client connectivity and protocol behavior • Optimize VPN service performance - kernel tuning, flamechart analysis, profiling • Manage security posture - firewalls, PKI, certificate lifecycle, hardening • Manage authentication and authorization infrastructure • Own configuration management and automated provisioning of infrastructure • Clear written incident communication and postmortem ownership

🎯 Requirements

• Own critical VPN services end-to-end including architecture, scalability, security and monitoring • Deliver OKRs and key commitments within agreed timelines • Write RFCs/ADRs for new features, refactors, etc • Raises engineering quality through standards, design reviews, knowledge sharing and mentorship • Balances reliability, security and delivery speed with strong operational judgment • Advanced networking - VPN protocols, tunneling, routing, DNS • Linux at depth - kernel internals, tuning, module management • Firewall management • Performance analysis - flamecharts, profiling, bottleneck identification • OSI model fluency - L2 through L7, TCP/IP stack, SSL/TLS • Security fundamentals - PKI, certificate management, hardening • Authentication and authorization - RADIUS, access control • Configuration management and automated deployments • Load balancing and failover for distributed services • Docker

🏖️ Benefits

• Free-of-charge 24/7 gym access • Onsite and online workouts • Consultations led by in-house Physical Well-Being experts • Free psychologist consultations • Dedicated mental health events • Premium access to top-rated wellness apps like Calm, Headspace, and Mindletic • Private health insurance • Additional vacation days off as you grow with us • Extra days for sick leave, special occasions, or parenting needs • Special gifts from us on your birthday, anniversary, and other major events • Company events & team-building • Legendary company getaway abroad with exciting activities, live concerts, and workshops