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Cyberhaven is building data security for the agentic enterprise, tracing the full lifecycle of data and adapting protection to changing context. The company is backed by $250M from investors including Khosla and Redpoint, with a team that includes leaders from CrowdStrike, Palo Alto Networks, Meta, and Google.
You will extend and own the on-endpoint network proxy solution, which intercepts and manipulates network traffic of third-party software. This is a high-impact role where you'll shape product architecture as an early contributor to rapidly evolving technology.
Key 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: build software that monitors hundreds of thousands of events with minimal endpoint performance impact
- Design and build highly reliable code that never impacts end-user experience
- Build secure-by-design hardened software that withstands real-world attacks while processing untrusted data and communicating with backend systems over the internet
Requirements:
- 6+ years of professional experience in systems software, networking, proxy, or security engineering, with strong 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
- Verbal and written communication skills in English
- Availability to frequently communicate with a distributed engineering team in Central European and US Eastern time zones
