Staff Linux Kernel & eBPF Security Engineer

United States Digital Space LLC; United States; Remote; USD 180,000 - 240,000; Full time

Job summary

United States Digital Space LLC is seeking a Staff Software Development Engineer to lead in-kernel enforcement for our Identity Security Platform. You will direct eBPF enforcement on Linux and own the end-to-end policy lifecycle across kernel and userspace, while coordinating with macOS and Windows teams.

You will optimize the syscall hot path, extend enforcement to containers and namespaces, and ensure portability across kernel versions.

Qualifications

• 8+ years in systems-level software engineering.
• Proven Linux kernel development experience.
• Experience with eBPF security enforcement.
• Proficiency in C and Rust.

Responsibilities

• Design, build, and own our eBPF programs and BPF LSM hooks (bprm_check_security, file_open, socket_connect).
• Own the kernel/userspace enforcement boundary: kernel-side event capture over ring buffers, policy eval in userspace, and deny decisions returned to kernel.
• Drive low-latency enforcement across large fleets and containers; optimize syscall hot path.
• Mentor senior and mid-level engineers on Linux systems and eBPF craft.

Skills

Linux kernel

eBPF

Rust

C

System design

Leadership

AI tools

Education

Bachelor's in CS or related

Tools

Aya/aya-ebpf

BPF Verifier

Perf

ftrace

bpftrace

gdb/kgdb

Job description

United States Digital Space LLC is seeking a Staff Software Development Engineer to lead in-kernel enforcement for our Identity Security Platform. You will direct eBPF enforcement on Linux and own the end-to-end policy lifecycle across kernel and userspace, while coordinating with macOS and Windows teams.

You will optimize the syscall hot path, extend enforcement to containers and namespaces, and ensure portability across kernel versions.