Software Engineer - Fullstack

Sim Space 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, Sim Space 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.

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.

We believe that people are at the center of everything we do. Sim Space 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, Sim Space consistently outperforms industry benchmarks in internal mobility, promotions, and total rewards growth.

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.

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.

• 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

• Typescript, React, Postgres, Kotlin, Kubernetes, Spring Boot

• 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

• Familiarity with Cybersecurity and Networking
• Familiarity with Kubernetes
• A Bachelor’s degree in Computer Science or equivalent experience

We’re proud to offer a competitive and comprehensive package designed to support your well-being, growth, and success:

• Compensa…