Staff Software Engineer

🔥 0 minutes ago

🇺🇸 United States – Remote

💵 $185k - $260k / year

⏰ Full Time

🔴 Lead

🧑‍💻 Full-stack Engineer

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SimSpace

WebsiteLinkedInAll Job Openings

201 - 500 employees

Founded 2015

💼 Consulting

🎖️ Defense

🔒 Cybersecurity

🔥 Funding within the last year

💰 $39M Venture Round - SimSpace on 2025-10

Consulting • Defense • Cybersecurity

SimSpace is a cybersecurity company that provides a realistic, intelligent cyber range platform for training, testing, and validating security teams, tools, and AI agents. Its platform enables live-fire exercises, threat emulation (full kill-chain and atomic), validation of controls and agentic workflows, and disaster recovery and compliance testing; it is used by enterprises and government customers to build cyber readiness and resilience. Founded by experts from U. S. Cyber Command and MIT Lincoln Laboratory, SimSpace focuses on upskilling individuals, strengthening teams, and evaluating AI-driven defenses in realistic, production-like simulations.

📋 Description

• Lead Greyspace architecture and technical decisions, defining service boundaries, data ownership, API contracts, and failure behavior • Design and build services that configure, deploy, and manage simulated internet environments • Own critical implementation work and turn prototypes into maintainable, tested software • Develop realistic network and application behavior across DNS, certificates, routing, web, and mail services • Validate complete workflows from a range host through simulated services and back • Design reusable services while isolating configuration, credentials, mutable state, and faults • Test containment and prevent unintended access between environments or to live networks • Define versioned integration contracts with platform, range, and emulation teams • Partner on operator workflows for configuration, readiness checks, troubleshooting, and lifecycle management • Translate training needs into prioritized use cases, acceptance criteria, and incremental delivery plans • Lead scoping and estimation and validate high-risk decisions with focused technical proofs • Drive reliability through automated integration tests, observability, performance testing, recovery procedures, and deployment and upgrade validation • Lead design and code reviews and resolve cross-service technical risks • Establish engineering standards supporting reliable delivery • Mentor senior engineers through hands-on collaboration

🎯 Requirements

• 8+ years of experience • Currently in the position of Staff or Senior Software Engineer • Strong record of building distributed applications, platform services, or networked systems • Experience leading technically complex work across teams • Ability to design, build, and ship production-grade distributed services across the full software development lifecycle • Strong networking fundamentals, including TCP/IP, DNS, HTTP, and TLS • Hands-on experience diagnosing behavior across application, service, and network boundaries • Experience designing multi-tenant or distributed systems with clear isolation, state management, API, and failure-recovery boundaries • Demonstrated ability to drive technical standards and architectural decisions across multiple teams • Strong scoping and estimation judgment • Strong communication skills for explaining complex architecture, networking behavior, and engineering trade-offs • Proficiency in a modern backend programming language • Software engineering practices including API design, service decomposition, automated testing, code review, and CI/CD • Hands-on experience with Linux, containers, and Kubernetes, including deploying and troubleshooting services • Comfort operating with ambiguity and shaping an incompletely defined roadmap • Experience in security-sensitive or compliance-driven environments such as DoD, FedRAMP, or SOC 2 is a strong plus • Familiarity with cyber ranges, simulation, or internet service infrastructure is a plus

🏖️ Benefits

• Annual bonuses tied to company performance and individual contributions • Comprehensive medical, dental, and vision benefits • Savings plans with coverage starting on day one • Company-paid counseling, coaching, and family resources through Spring Health • 401(k) retirement savings plan with company match • Unlimited vacation • Dedicated health & wellness days • Flexible work-life solutions • Paid parental leave • Equity stock options at hire • Annual performance-based equity grants • Employee referral rewards of 1,500–3,500 for every qualified hire • Full- and partial-subsidized Peloton membership plans • Peloton equipment discounts • LinkedIn Learning membership • Monthly reimbursements for meaningful connections with teammates through SocialSpace Community • Legal plan coverage • Pet insurance • Wellness reimbursements