SimSpace

Senior Software Engineer, Network Simulations

Remote - U.S · Senior

Sponsorship not specified$160k-$225kDetected 36 days ago

TypeScriptPythonGoKotlinReactSpringPostgreSQLKubernetesLinuxIntellectual PropertyDNSBGP/OSPFResearchLeadershipMentoring

About the role

SimSpace serves as an AI Proving Ground where organizations can confidently train, test, and outmaneuver adversaries in any environment.
Trusted by allied governments, militaries, enterprises, and research institutions worldwide, SimSpace enables adaptive, AI-ready defenses that stay ahead of evolving threats.
Our governing philosophy of being Human Centered is deeply embedded within our value system.

you will be designing and building a kernel-level simulation layer that reproduces the observable behavior of worldwide internet routing - correct ASN topology, realistic inter-AS latency, accurate traceroute and MTR output - without instantiating a single virtual router.
As the technical lead on a newly formed team, you will set architectural direction, mentor peer engineers, and partner closely with a Principal Engineer and your Engineering Manager to build something that does not yet exist at this fidelity in the industry.
Serve as technical lead for the team - making daily architectural decisions across the full service scope, conducting design reviews, and maintaining engineering quality across all four engineering roles on the team
Partner with other Engineers on novel simulation challenges, bring independent judgment to architectural tradeoffs, and shape the technical roadmap
Mentor engineers on the team, raising the bar on systems design, kernel-level debugging, and engineering rigor
Collaborate with adjacent platform teams on the operational model for a long-lived, multi-tenant service serving active cyber range deployments

In compliance with federal law, all persons hired will be required to verify identity and eligibility to work in the United States and to complete the required employment eligibility verification document form upon hire.

Familiarity with Kubernetes as the deployment environment for both control plane services and distributed agent components
Experience with network simulation, traffic shaping, or cyber range infrastructure is a strong plus
Prior work in cybersecurity, defense, or government-adjacent environments is a plus due to SimSpace's customer base

Typescript, React, Postgres, Kotlin, Kubernetes, Spring Boot
What are the qualifications to apply?
in-house training, internal and external learning platforms, cyber conferences, industry events, and dedicated time for skill development.
Our people are empowered to shape their careers - and it shows.
Year over year, SimSpace consistently outperforms industry benchmarks in internal mobility, promotions, and total rewards growth.
Who Thrives Here?
To be successful as a
Strong systems programming skills - C or Rust for eBPF program development, and Go or Python for the control-plane agent and tooling layer

$160,000 - $225,000, reflecting our confidence in your expertise and impact, with the opportunity for annual bonuses tied to company performance and individual contributions.
Ownership Opportunities: Equity stock options at hire, with annual performance-based grants-become an invested stakeholder in our shared success.

Legal plan coverage, pet insurance, wellness reimbursements, and more to simplify life's details.

Founded in 2015 by experts from U.S. Cyber Command and MIT Lincoln Laboratory, the platform unifies training, testing, and validation in a realistic, live-fire simulation-helping teams evaluate security investments, optimize performance, and compress cyber readiness cycles from months to days.
Why join SimSpace?
We are an organization that is focused on building our culture and mindfully enhancing our atmosphere every day which is why we have collaborated on an integral value system.
We apply this philosophy to every one of our internal team members, external clients, and their customers.
How Do We Work?
We believe that people are at the center of everything we do.
SimSpace fosters a culture of continuous learning, curiosity, and professional growth.
A persistent, control-plane internet simulation service that serves multiple concurrent cyber ranges without per-range instantiation
An eBPF-based network simulation layer providing geographically accurate ASN routing, inter-AS latency enforcement, and traceroute and MTR fidelity entirely in kernel space
Lightweight in-range proxy agents that receive topology configuration from the control plane and handle local packet interception without requiring a full simulation stack in every range
A topology database encoding real-world ASN-to-CIDR mappings, inter-AS latency models, and geographic placement data that drives the simulation

SimSpace is an Equal Opportunity Employer.
We are committed to providing an inclusive and welcoming environment for all members of our staff, clients, volunteers, subcontractors, vendors, and clients.
Research shows that women and people from underrepresented groups only apply to jobs if they meet all of the qualifications.
However, no one ever meets 100% of the qualifications.

This listing is sourced directly from SimSpace's careers page and normalized into a canonical job model.