Senior Software Engineer, Network Simulation - eBPF Kernel Lead

SimSpace; United States; Hybrid; USD 160,000 - 225,000; Full time

Benefits offered by this job

Equity options

401(k) match

Unlimited vacation

Parental leave

Health benefits

Wellness program

Job summary

SimSpace is seeking a Senior Software Engineer to lead the internet simulation platform — an eBPF-based kernel-space model that reproduces global routing without real routers. You will guide the architectural direction, mentor engineers, and partner with a Principal Engineer and Engineering Manager to deliver a production-grade system.

The role emphasizes hands-on kernel networking, XDP/TC design, topology data pipelines, and cross-team collaboration to support multi-tenant cyber range

Qualifications

• Deep expertise in Linux kernel networking and eBPF programming for kernel-space packet processing.
• Strong systems programming skills in C or Rust, and Go or Python for tooling.
• Solid understanding of real-world internet routing: BGP, ASN topology, CIDR, inter-AS peering.
• Experience with control plane vs data plane separation and intermittent connectivity scenarios.
• Demonstrated technical leadership and the ability to guide a team and reviews.
• Familiarity with Kubernetes as the deployment environment for services and agents.

Responsibilities

• Own the end-to-end architecture of the eBPF-based routing simulation layer, including XDP and TC hook design.
• Design and build the control-plane topology database and topology data pipeline.
• Architect the in-range proxy agent bridging control plane to cyber ranges and manage DNS delegation.
• Define interface contracts between control plane and agents and handle resilience.
• Serve as technical lead, conduct design reviews, and guide multiple engineering roles.
• Collaborate with adjacent teams on long-lived, multi-tenant cyber range deployments.

Skills

eBPF programming

Linux kernel networking

System programming

C

Rust

Go

Python

Tools

XDP

TC hooks

BPF maps

Kubernetes

Postgres

Git

Job description

SimSpace is seeking a Senior Software Engineer to lead the internet simulation platform — an eBPF-based kernel-space model that reproduces global routing without real routers. You will guide the architectural direction, mentor engineers, and partner with a Principal Engineer and Engineering Manager to deliver a production-grade system.

The role emphasizes hands-on kernel networking, XDP/TC design, topology data pipelines, and cross-team collaboration to support multi-tenant cyber range