Senior Full Stack Engineer
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Job Description
Senior Full Stack Engineer building React and TypeScript operator workflows for SimSpace’s cyber simulation platform. Contributing to backend integrations, platform observability, and resilient asynchronous operations.
Responsibilities:
- Build the web-based operator experience for SimSpace’s internet simulation platform across multiple ranges and environments
- Design and build frontend workflows using React and TypeScript
- Create workflows for configuring simulated services, registering personas, managing topology, provisioning applications, delivering scenario content, and querying platform state
- Build reusable frontend architecture, components, and design patterns
- Integrate the frontend with the control-plane API, including authentication, authorization, validation, error handling, asynchronous operations, and real-time status updates
- Translate complex platform operations into intuitive, observable user experiences
- Partner with the backend engineer on API design and contracts
- Contribute to backend services and integration layers, including supporting endpoints and evolving data models
- Develop views for platform health, range connectivity, service lifecycle, operation history, and partial-failure recovery
- Implement state-management and data-fetching patterns for a multi-tenant platform with asynchronous and event-driven backend behavior
- Build automated component, integration, and end-to-end tests
- Improve frontend performance, accessibility, security, and maintainability
- Collaborate with product, design, backend, network simulation, and SRE partners
- Help establish frontend standards, code-review practices, observability, release processes, and documentation
- SimSpace serves as an AI Proving Ground, helping governments, militaries, enterprises, and research institutions train, test, and improve cyber defenses
Requirements:
- Strong experience building production web applications with React and TypeScript
- Experience designing and delivering complex operator interfaces, administrative consoles, infrastructure-management products, or other workflow-heavy applications
- Strong frontend architecture skills, including component design, application state management, data fetching, routing, forms, validation, and error handling
- Experience integrating frontend applications with RESTful or similar platform APIs
- Understanding of asynchronous and distributed-system behavior, including long-running operations, partial failures, retries, and eventual consistency
- Backend development experience, preferably with Kotlin and Spring Boot, or ability to become productive in that stack
- Experience collaborating on API schemas and contracts with backend engineers
- Strong testing practices across unit, component, integration, and end-to-end testing
- Familiarity with authentication, authorization, secrets handling, and secure frontend development
- Experience instrumenting applications so failures can be diagnosed across browser, API, and backend service boundaries
- Strong product and user-experience instincts
- Clear communication skills and ability to work closely with engineers across frontend, backend, infrastructure, and operations
- Must be currently authorized to work in Costa Rica
- Must be able to participate in interviews and conduct business entirely in English
- Must be able to work primarily within U.S. business hours when required
- Dedicated workspace and reliable high-speed internet suitable for remote work
Benefits:
- Annual bonuses tied to company performance and individual contributions
- Private medical, dental, vision, and life benefits
- Company-paid counseling, coaching, and resources for you and your family through Spring Health
- Paid parental leave plans
- Equity stock options at hire, with annual performance-based grants
- LinkedIn Learning membership
- Monthly reimbursements for meaningful connections with teammates through our SocialSpace Community
- Remote work arrangement
- In-house training, internal and external learning platforms, cyber conferences, industry events, and dedicated time for skill development
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