Software Engineer - Fullstack
Confirmed on the employer's own hiring board on Sep 25, 2026. First seen by Alion on Sep 21, 2026. SimSpace scores B on the Alion truth index.
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!
SimSpace is looking for a Software Engineer - Fullstack to join our team and participate in the full development lifecycle, from definition to maintenance. You’ll collaborate with UX, Product, and Data Science teams, engage in team planning, demos, and retrospectives, and continuously contribute to knowledge sharing and mentorship.
Who you are:
You can work across the stack, whether it's expanding our API or enhancing the frontend
You have excellent communication skills (written and verbal) and are a team player
You enjoy solving complex problems & building solutions through collaborative methods
You’re always open for feedback, and are willing to give feedback to your colleagues
You understand that nothing is perfect and there is always room for improvement
You are driven off of goals and team outcomes
You’re focused on the iterative delivery of high-quality code, along with tests and documentation
Our Tech Stack:
Typescript, React, Postgres, Kotlin, Kubernetes, Spring Boot
Requirements:
Strong bilingual proficiency in English and Spanish skills required across written, virtual, and in-person interactions
4+ years of hands on software development experience
Familiarity with front-end technologies such as Typescript, React, or similar
Familiarity with Kotlin and Spring Boot
Familiarity with API Design
Comfortable working with RESTful APIs and microservices architecture
Experience with databases (e.g., PostgreSQL, MongoDB) and data modeling
Knowledge in the principles of testing software
Experience working with remote teams
Nice to have but not required:
Familiarity with Cybersecurity and Networking
Familiarity with Kubernetes
We’re proud to offer a competitive and comprehensive package designed to support your well-being, growth, and success:
Compensation. Base monthly pay range: 1,500,000 CRC - 2,500,000 CRC reflecting our confidence in your expertise and impact, with the opportunity for annual bonuses tied to company performance and individual contributions.
Health & Wellness. Private medical, dental, vision, and life benefits.
Mental Health Support. Access to company-paid counseling, coaching, and resources for you and your family through Spring Health.
Parental Leave. Paid leave plans to support you and your loved ones during life’s most important moments.
Ownership Opportunities. Equity stock options at hire, with annual performance-based grants-become an invested stakeholder in our shared success.
Continuous Learning. Access a LinkedIn Learning membership to prioritize your personal and professional development.
Social Connections: Monthly reimbursements for meaningful connections with teammates through our SocialSpace Community.
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 [email protected].
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.