Senior Network Proxy & Security Systems Engineer

Openkrill; United States; Remote; USD 120,000 - 170,000; Full time

Job summary

Cyberhaven is seeking an experienced systems software engineer to own and evolve its on-endpoint network proxy solution. You will intercept and manipulate network traffic of third-party software, with a chance to influence product architecture early on.

The role emphasizes real-time policy application, performance optimization, and secure, reliable code that preserves user experience while facing real-world threats.

Qualifications

• 3+ years of professional experience in systems software, networking, proxy, or security engineering with depth in network interception and low-level systems.
• Strong track record in network interception and parsing.
• Prior work on at least one forward proxy used by security software.
• Experience debugging, profiling, and optimizing the performance of low-level system software.
• Proficient in designing and implementing application architecture.
• Experience with agile development and SCRUM.
• Proven ability to collaborate with a distributed cross-functional team.

Responsibilities

• Hook or redirect outbound connections, terminate and re-establish TLS sessions, and apply content-aware policies in real time.
• Add low-level collectors that trace data flows across apps, files, sockets, and pipes, feeding a unified event stream.
• Solve challenging performance optimization problems: building software that monitors hundreds of thousands of events with minimal impact on endpoint performance.
• Design and build highly reliable code that never impacts the end-user experience.
• Build secure-by-design hardened software that withstands real-world attacks, while processing untrusted data and communicating with a backend over the internet.

Skills

Systems software

Networking

Security engineering

Performance optimization

Application architecture

Agile SCRUM

Cross-functional collaboration

Job description

Cyberhaven is seeking an experienced systems software engineer to own and evolve its on-endpoint network proxy solution. You will intercept and manipulate network traffic of third-party software, with a chance to influence product architecture early on.

The role emphasizes real-time policy application, performance optimization, and secure, reliable code that preserves user experience while facing real-world threats.