Senior Software Integration Engineer-API Design
Senior Software Integration Engineer-API Design Belong. Connect. Grow. with KBR! KBR's National Security Solutions team provides high-end engineering and advanced technology solutions to our customers in the intelligence and national security communities. In this position, your work will have a profound impact on the country's most critical role - protecting our national security. Why Join Us?
- Innovative Projects: KBR's work is at the forefront of engineering, logistics, operations, science, program management, mission IT and cybersecurity solutions.
- Collaborative Environment: Be part of a dynamic team that thrives on collaboration and innovation, fostering a supportive and intellectually stimulating workplace.
- Impactful Work: Your contributions will be pivotal in designing and optimizing defense systems that ensure national security and shape the future of space defense.
- Define and govern the API‑first contracts that modularize the simulation core and onboard legacy tools as modern services
- Ensure transparency, repeatability, and security across all integrations (tools, data, metadata, orchestration)
- Design REST/gRPC APIs and GraphQL schemas for simulation core services: timing, state‑of‑play, user input, orchestration
- Lead API governance: versioning, schema evolution (OpenAPI/JSON Schema/proto), deprecation policy, and documentation
- Wrap existing simulation/wargaming tools as secure web services via SDKs; standardize authentication/authorization (OIDC/JWT) and mTLS
- Implement API gateway patterns: routing, rate limiting, quotas, request validation, and zero‑trust controls
- Model metadata & lineage: tagging of tools/inputs/results; expose reconciliation endpoints for VV\&A, fidelity compatibility assessment, and repeatability
- Location: On-site/Hybrid/Remote
- Travel Requirements: 15%
- Working Hours: Standard
- 5-8+ years in API design/integration; strong OpenAPI, JSON Schema, protobuf/gRPC, and GraphQL experience
- Security: OAuth2/OIDC, JWT, mTLS, policy enforcement; experience with gateway technologies
- Data modeling, metadata/lineage design, and auditability for regulated domains
- Active DoW Secret clearance
- Experience integrating legacy/constructive simulation systems into modern API ecosystems
- Event streaming (Kafka/NATS) for asynchronous workflows and telemetry
- Comfortable designing interfaces for multi‑classification operations
- Active Top Secret clearance with SCI eligibility
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