Note: The job is a remote job and is open to candidates in USA. SimSpace serves as an AI Proving Ground that helps governments, militaries, enterprises, and research institutions train, test, and improve cyber defenses through realistic live-fire simulations. The Backend Senior Software Engineer will lead the architecture and delivery of scalable distributed microservices for attack and user emulation, while integrating AI-enabled services and autonomous workflows. The role also includes strategic technical ownership, cross-functional execution, engineering standards, mentorship, observability, and security-focused development.
Responsibilities
- Architect, design, and deliver highly scalable, fault-tolerant, and resilient distributed microservices for cybersecurity range simulations, setting technical standards across systems
- Design and implement platform capabilities that coordinate AI-enabled services and autonomous workflows to support intelligent emulation behaviors, reliable context exchange, and clear operational controls. You will evaluate and adopt appropriate interoperability patterns and protocols as the platform evolves
- Partner closely with Product Managers, UX Designers, and Engineering Leadership to define roadmap priorities, decompose multi-quarter initiatives into actionable technical milestones, and lead complex end-to-end execution
- Drive system reliability, performance tuning, and fault tolerance strategies. Establish and champion best practices in code quality, testing methodologies, API design, and system architecture across the team
- Mentor and coach engineers across levels, actively supporting their growth through regular design reviews, code reviews, constructive feedback, and delegation of high-impact technical initiatives
- Design and implement robust observability, telemetry, and proactive alerting frameworks to ensure high availability, fast incident resolution, and zero-downtime deployments
- Embed security, compliance, and offensive/defensive mitigation patterns directly into system design and the software development lifecycle
- Author and maintain architectural decision records (ADRs), technical spec documents, and system design patterns to align teams and build long-term organizational knowledge
Skills
- 4+ years of hands-on software development experience with a track record of architecting, building, and operating large-scale, distributed microservices in production
- 2 year degree in science & technology or commensurate experience
- Deep Expertise in OOP languages such as Java or Kotlin, with proven experience in advanced API design, system integration, and event-driven architectures
- Production Expertise in container orchestration platforms (Kubernetes, Docker) and enterprise frameworks (Spring Boot)
- AI & Agent Systems Integration: Experience integrating AI/LLM capabilities into production software systems, with sound judgment around service boundaries, context management, reliability, security, and observability
- Proven Track Record of leading complex, multi-system initiatives from ideation to delivery, making sound pragmatic trade-offs between speed, scalability, and technical debt
- Domain Context: Strong understanding of cybersecurity concepts, including offensive/defensive tactics, user emulation techniques, or threat landscapes
- Advanced Problem Solving: Experience identifying system bottlenecks, improving fault tolerance, and resolving complex distributed systems failures
- Experience with agentic workflows, orchestration systems, Model Context Protocol (MCP), or Agent-to-Agent (A2A) communication patterns is a plus
- Experience evaluating or integrating AI or machine learning capabilities into production backend systems, particularly when model-driven behavior must be reliable, observable, and safely controlled
- Exposure to Reinforcement Learning (RL) concepts (e.g., reward functions, policy optimization, or multi-agent RL environments), particularly applied to decision-making or simulation modeling
Benefits
- Annual bonuses tied to company performance and individual contributions
- Comprehensive medical, dental, and vision benefits, plus savings plans—coverage starts on day one
- Company-paid counseling, coaching, and resources for you and your family through Spring Health
- A 401(k)-retirement savings plan featuring a company match
- Paid leave plans to support you and your loved ones during life’s most important moments
- Equity stock options at hire, with annual performance-based grants
- $1,500–$3,500 for every qualified hire through our employee referral program
- Full- and partial-subsidized Peloton Interactive Wellness Program membership plans and equipment discounts
- A LinkedIn Learning membership to prioritize your personal and professional development
- Monthly reimbursements for meaningful connections with teammates through our SocialSpace Community
- Legal plan coverage
- Pet insurance
- Wellness reimbursements
- Remote work arrangement
- In-house training
- Internal and external learning platforms
- Cyber conferences
- Industry events
- Dedicated time for skill development
Company Overview