The weaponization of AI is driving a paradigm shift in the cyber security industry from proactive to preemptive security: clients must now invest more intelligence and effort in understanding their vulnerabilities before their adversaries do (Open AI). The only way to achieve this is to simulate future attack scenarios at scale, and to run them in high fidelity digital replicas of production environments (Gartner/Forrester). SimSpace serves as the AI Proving Grounds to generate hypersynthetic data which pressure tests controls, tools, teams, and agentic capabilities in full kill chain attacks hidden in realistic environmental traffic and patterns of life.

Founded in 2015 by experts from U.S. Cyber Command and MIT Lincoln Laboratory, the platform was initially conceived to assist in Offensive Cyber Operations (OCO), to quickly replicate target environments to conduct mission rehearsal of human operators and their tools to deny (disrupt, degrade, destroy) or deceive (manipulate or exfiltrate data) adversaries. The company has since expanded to serve over a dozen allied governments in OCO/DCO as well as critical infrastructure enterprises around the world. The company is actively investing in the Americas, Asia Pacific, Europe and the Middle East through direct sales and channel partners. SimSpace has launched the AI Proving Grounds Consortium, leading the revolution by creating an open platform for the InfoSec ecosystem to train, validate and operationalize their agentic capabilities before committing to production.

Why join SimSpace?

We are a team united by a shared purpose and four core values: Serve to Protect, Acquire Understanding, Teamwork without Borders, and Operate as Innovators. We value candid, constructive feedback and create opportunities for personal, professional, and financial growth. Our vision, “Defend the Free World,” drives our mission: “Defeat Any Adversary in Any Cyber Terrain at Machine Speed.”

How Do We Work?

We listen to customers and colleagues, challenge assumptions, and turn ideas into meaningful results. We expect everyone to embrace emerging technologies, simplify and automate work, and use AI to learn, solve problems, and help deliver quality with speed. We apply human judgment and take responsibility for outcomes. Whether remote or office-based, we collaborate across teams and time zones.

We invite you to apply today!

We are looking for: A Senior Cyber Range Engineer who will architect, deploy, and maintain cloud-based cyber ranges and training environments. You will be responsible for designing and implementing scalable, realistic training infrastructures that emulate enterprise environments across multiple cloud platforms. Working alongside security researchers and training specialists, you'll create the technical foundation that enables high-fidelity security simulations and exercises. As a Senior Cyber Range Engineer, you will ensure our ranges provide authentic cloud experiences while maintaining isolation, monitoring capabilities, and resource efficiency.

What will you be doing as a Senior Cyber Range Engineer?

Design, implement and maintain local and cloud-based cyber range architectures that support multiple concurrent training scenarios and user sessions

Develop automation frameworks for rapid deployment, teardown, and reset of range environments using Infrastructure as Code (IaC) principles

Create emulated cloud services and resources when direct cloud integration isn't feasible or cost-effective

Maintain security controls and network isolation to prevent range escape or resource abuse

Collaborate with content developers to translate training requirements into technical specifications

Be an expert on SimSpace software providing guidance and documentation for many different use cases

Develop and maintain documentation for range architectures, deployment procedures, and troubleshooting guides

Deliver customized knowledge transfer sessions to customer and partner personnel, including platform training curriculum