Staff/Principal Linux Infrastructure Engineer

TL;DR

Staff/Principal Linux Infrastructure Engineer (VPN): Develop, optimize, and maintain TrustedServer core systems for hirify.global’s global privacy infrastructure with an accent on network performance, Linux kernel optimizations, and system resilience. Focus on architecting complex network topologies, implementing advanced routing workarounds, and leading performance testing frameworks.

Location: Singapore, Hong Kong. Visa sponsorship: None in EU; HK requires 2+ years experience and university degree; Singapore/UK only for mid-career or above.

Company

World’s leading provider of online privacy and security services with millions of customers, 700+ team worldwide, operating in 100+ countries.

What you will do

• Develop, optimize, and maintain TrustedServer technology as the secure backbone of global services.
• Lead Linux development projects, contribute to open-source communities, and optimize network/system performance.
• Create testing environments and labs to analyze and improve system speed, resilience, and scalability.
• Architect complex network topologies using deep Linux network stack knowledge for privacy infrastructure.
• Write technical designs and test plans to de-risk and architect infrastructure projects.

Requirements

• 7+ years in Linux system development and infrastructure engineering.
• Experience in network development, complex topologies, and community contributions.
• Deep expertise in systems-level languages like C, C++, Rust with advanced programming paradigms.
• Advanced performance tuning and infrastructure/networking testing frameworks.
• Strong analytical/problem-solving skills and hands-on systems architecture.
• Degree in Computer Science/Engineering or equivalent experience.

Nice to have

• Published research in systems performance, networking, or Linux architecture.
• Expertise in security, cryptography, secure coding, or PKI.
• Familiarity with VPN protocols like OpenVPN, WireGuard, Lightway.

Culture & Benefits

• Modern tech stack and strong engineering culture with CI/CD, observability, code review.
• Influence on technical decisions, innovation, and ownership.
• Continuous learning and professional development support.
• Motivated collaborative team with extensive experience.
• Purpose-driven work emphasizing security, quality, and depth.