SimSpace
simspace.com
Actively hiring
Security Operations
Military Training
Cyber Warfare
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Financials
Visa sponsorship
- United States · H-1B filings in 12 months: 1 · green card filings: 1
Overview
SimSpace is a cyber range company headquartered in Boston, Massachusetts, and founded in 2015 by veterans of United States Cyber Command. The company builds high fidelity replicas of customer networks where security teams rehearse attacks, test detection tooling, and measure their own readiness under realistic conditions. It sells to banks, critical infrastructure operators, government agencies, and military units that need to validate defences without touching production systems.
News
Unsupervised Anomaly Detection and High-Fidelity IoT Threat Simulation Inside Multi-Homed Cyber Ranges
An Explainable AI Framework for Early Warning Indication in Isolated Range Environments. Supplemental technical documentation to the white paper "Preemptive Defense at Machine Speed: Validating an Early Warning Indicator for IoT Camera Exploitation on a C
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Report
Why Isolation Forest: Behavioral Machine Learning Detection Explained
The Algorithm, the Two-Feature Design, and Why It Outperforms Signatures and Rules for This Threat. Supplemental technical documentation to the white paper "Preemptive Defense at Machine Speed: Validating an Early Warning Indicator for IoT Camera Exploita
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Report
Range Validation and Detector Calibration: From Loopback Development to a Range-Tested Production Configuration
A Testing Report on Multi-Homed Deployment, False-Positive Root-Causing, and Isolation Forest Calibration. Supplemental technical documentation to the white paper "Preemptive Defense at Machine Speed: Validating an Early Warning Indicator for IoT Camera E
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Report
EWI Radar and the Real Iranian IP Camera Targeting Campaign: A Capability and Fidelity Comparison
Assessing Simulation Fidelity Against Check Point Research's March 2026 Reporting, and the Case for Monitoring-Based Detection as a Real-World Defense. Supplemental technical documentation to the white paper "Preemptive Defense at Machine Speed: Validatin
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Report
EWI Radar Detection Configuration: Final Validation Against Range Hardware
Evidence-Based Justification for the Deployed Detector Configuration. Supplemental technical documentation to the white paper "Preemptive Defense at Machine Speed: Validating an Early Warning Indicator for IoT Camera Exploitation on a Cyber Range." EWI_Ra
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Report
Lessons from the SimSpace Webinar Hugging Face and the "What-if Machine:" Validating AI Agents in Live Attack Simulations
During the recent SimSpace webinar-Hugging Face and the "What-if Machine:" Validating AI Agents in Live Attack Simulations-Jason Rivera (Global Field CISO & Chief Evangelist) and Peter Chuzie (Global Sales Engineering Lead) broke down how AI agents alter
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Report
AI Proving Grounds Playbook
This is the full SimSpace playbook for the AI Proving Grounds, the document the three shorter solution briefs sit underneath. It describes the range in three layers: infrastructure covering IT, cloud, OT, IoT and ICS; apps and tools covering network, iden
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Report
Operationalize AI Agents & Humans Together
This SimSpace solution brief covers the third stage of AI adoption in the SOC: running agents and human analysts as one unit rather than two. Its argument is that SecOps excellence needs a hybrid architecture, human intuition working alongside AI at machi
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Report
Test & Validate AI Agents
This SimSpace solution brief covers continuous AI agent testing against LLM-driven threats, written for security leaders who need evidence that a deployed agent behaves as intended rather than an assumption that it does. Its premise is that an agent meeti
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Report
Build & Train AI Agents with Hyper-Synthetic Data
This SimSpace solution brief makes the case for training AI security agents on hyper-synthetic data rather than static datasets. It names the failure mode directly: when product teams and corporate data science units train agents on static data, they inhe
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Tech stack
Technologies named in job postings at SimSpace over the last 12 months, by layer, with the share of postings for each.
Technologies in use
90
Postings analysed
40
Stack modernity
74/100AI adopter
Languages
Kotlin38%
Java33%
TypeScript25%
Python25%
Frameworks & libraries
Spring Boot30%
React.js18%
Hadoop5%
Pandas5%
Databases
PostgreSQL15%
Cloud & platforms
Kubernetes55%
VMWare30%
Linux25%
Windows15%
AI & ML
LLM10%
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Full SimSpace tech stack
90 technologies · by team · pay by technology · changes · similar stacks
Salary insights
Compensation ranges based on this company's open jobs
Median
$220k
Typical range
$115k – $260k
Open positions
9
8
Jobs
Senior
75%
Staff
25%
| Level | Jobs | Median | Typical range |
|---|---|---|---|
| Senior | 6 | $205k | $145k – $225k |
| Staff | 2 | $260k | $260k |
Highest paying role
Staff Software Engineer
$260k
Normalized to USD per year
All salaries at SimSpace
By role, level and city, against the market · 9 jobs with pay
People
James Gerber
Executive Officer
William Hutchison Jr.
Executive Officer, Director
Lee Rossey
Executive Officer, Director
Jason Rottenberg
Director
Names and roles come from public filings, company registers and the company's own site. Is this you? Correct or remove · How we handle this data
Growth
Hiring Momentum
77/100
Scaling fast
Open positions
20
5 opened / 11 closed in 30 days
Median time-to-fill
40 days
faster than 32% of the market
ATS activity
Every ~4 hours
Today
Hiring Dynamics
+100%
Hiring Focus
The percentage next to each role is its share of the company's job openings over the last 90 days; the arrow shows the shift versus the previous period.
Backend
33% ▼
Security
11% ▲
Sales
11% ▲
DevOps
7% ▲
Industrial Engineering
7%
Frontend
4% ▲
Activity Timeline
New location: San José
Sep 2026
Added Computer Vision to stack
Sep 2026
Added WebSockets to stack
Sep 2026
Added Human-in-the-Loop to stack
Sep 2026
Added Agentic Workflows to stack
Sep 2026
Added Windows Server to stack
Sep 2026
Added Agile to stack
Sep 2026
New location: Singapore
Sep 2026
Added Slack to stack
Sep 2026
Added Notion to stack
Sep 2026
Added Google Workspace to stack
Sep 2026
Added Salesforce to stack
Sep 2026
Offices
Where the company hires and what each office is for
Cities
4
Hiring now
3
Countries
3
Busiest office
Boston
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Headquarters
Builds here
Office with open vacancies
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Boston
United States
HQ
2 open roles 2 posted in 90 days 100% engineering 50-200 est. staff $145k Avg Salary
hires for DevOps
320 Congress Street
San José
Costa Rica
Engineering / R&D
5 open roles 5 posted in 90 days 60% engineering 50-200 est. staff
hires for Backend, Security, Support
Singapore
Singapore
2 open roles 2 posted in 90 days 50% engineering 10-50 est. staff
hires for Security, Marketing
Orlando
United States
Regional office
Blog
Suite 500, Orlando, FL 32826
Earlier presence
Lincoln, United States
Jobs
≈ $86k – $158k per year (Estimated) • Equity • Remote (United Kingdom) • Full-Time • 6+ years exp
Python
SQL
Hadoop
vLLM
AI Agents
Ollama
Pandas
NumPy
LLM
RAG
Hugging Face
Red Teaming
DevOps
Splunk
Cybersecurity
Crowdstrike
Cyber Kill Chain
SIEM
Apply
$185k – $260k per year • Equity • Remote (United States) • Full-Time • 8+ years exp
CI/CD
Kubernetes
Linux
TCP/IP
DNS
Cybersecurity
SOC 2
FedRAMP
Apply
$95k – $145k per year • Equity • Hybrid • Full-Time • 5+ years exp • Boston
GCP
VMWare
Azure
AWS
Linux
Apply
Equity • Hybrid • Full-Time • 4+ years exp • San José
JavaScript
Java
Kotlin
TypeScript
Spring Boot
Databases
PostgreSQL
Frontend
React.js
DevOps
Kubernetes
Apply
$185k – $260k per year • Equity • Remote (United States) • Full-Time • 6+ years exp • Bachelor's Degree
Ansible
VMWare
CI/CD
Windows Server
Git
Kubernetes
Platform Engineering
Linux
Windows
DNS
DHCP
Cybersecurity
Active Directory
Robotics
Digital Twin
Apply
≈ $24k – $54k per year (Estimated) • Equity • Hybrid • Full-Time • 3+ years exp • San José
JavaScript
PowerShell
Node JS
Rest API
Terraform
GitOps
Windows
Cybersecurity
Okta
Microsoft Entra ID
Apply
≈ $24k – $68k per year (Estimated) • Equity • Hybrid • Full-Time • 2+ years exp • Bachelor's Degree • San José
Python
PowerShell
Bash
AI Agents
DevOps
GCP
Azure
AWS
Linux
Windows
TCP/IP
DNS
Cybersecurity
MITRE ATT&CK
SOC 2
SIEM
Apply
$95k – $145k per year • Equity • Hybrid • Full-Time • 5+ years exp • Boston
GCP
VMWare
Azure
AWS
Linux
Apply
≈ $66k – $122k per year (Estimated) • Equity • In office • Full-Time • 6+ years exp • Singapore
Python
SQL
Hadoop
AI Agents
Pandas
LLM
Red Teaming
DevOps
Splunk
Cybersecurity
Crowdstrike
Cyber Kill Chain
SIEM
Apply
≈ $38k – $112k per year (Estimated) • Equity • Remote (Costa Rica) • Full-Time
Java
Kotlin
Spring Boot
DevOps
GitOps
Kubernetes
Apply
Equity • Hybrid • Full-Time • San José
Java
Kotlin
TypeScript
Spring Boot
Databases
PostgreSQL
AI/ML
Red Teaming
DevOps
GCP
Azure
AWS
Kubernetes
Grafana
GitHub
DNS
Cybersecurity
PKI
Apply
$165k – $225k per year • Equity • Remote (United States) • Full-Time
Python
Rust
Kubernetes
eBPF
Linux
DNS
BGP
Apply
Financials
Total raised
$45M
Latest round
Venture - Series Unknown
Funding rounds
1
Funding rounds
| Round | Announced | Amount | |
|---|---|---|---|
| Venture - Series Unknown | 2023 | $45M | Details |