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. 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. Our governing philosophy of being Human Centered is deeply embedded within our 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. That belief shows up in action: 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? We are a team of innovators, protectors, and problem-solvers. We believe diversity of thought and experience fuels better solutions, and we’re committed to building teams that reflect the communities we serve. Whether you’re remote or office-based, you’ll collaborate with talented colleagues across departments and time zones, united by the mission to create a safer digital world. We invite you to apply today!
Feature Team | React, Kotlin/Spring Boot, Kubernetes | AI Development SimSpace is looking for a Senior Full Stack Engineer to join a feature team building production functionality across our platform. This role is backend-leaning, approximately 70% backend and 30% frontend, with work spanning APIs, services, data models, integrations, and React-based user workflows. We are looking for an engineer who can own features end to end, use AI coding agents as a primary implementation tool, and still apply strong senior engineering judgment to architecture, code quality, testing, security, and production reliability. What You Will Do
Required Qualifications
Nonnegotiable AI Requirement This role expects most feature implementation to be carried out with AI coding agents under your direction. Autocomplete, occasional prompting, or using AI only for code review is not enough. You should be able to demonstrate a mature AI development workflow that connects requirements, code generation, execution, testing, debugging, and correction. The goal is not to outsource judgment to AI; the goal is to use AI to increase delivery speed while maintaining senior-level code quality and production responsibility. Highly Desirable
Tech Stack Our current stack includes:
Interview Expectations During the interview process, expect to discuss and possibly demonstrate how you use AI agents to build production software. We will ask about real examples, your workflow, your debugging process, how you validate generated code, and how you decide when to intervene manually. We’re proud to offer a competitive and comprehensive package designed to support your well-being, growth, and success:
SimSpace is an Equal Opportunity Employer: 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. SimSpace is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, pregnancy, genetic information, disability, status as a protected veteran, or any other protected category under applicable federal, state, and local laws. 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. SimSpace encourages you to break that statistic and to apply. We look forward to your application! We also consider qualified applicants regardless of criminal histories, in accordance with applicable law. We are committed to providing reasonable accommodations for qualified individuals with disabilities in our job application procedures. If you need assistance or accommodation due to a disability, please contact careers@simspace.com . SimSpace does not accept unsolicited resumes from employment agencies. Actual compensation for the position is based on a variety of factors, including, but not limited to affordability, skills, qualifications and experience, and may vary from the range.
