Software Developer (Backend) Senior

• Direct mission impact: your work keeps legacy and next-gen systems interoperable and mission-ready in a secure environment.
• Hands-on engineering: design APIs, build robust back-end services, and shape integration patterns that influence product direction.
• Modern tools, meaningful constraints: work with Node.js/TypeScript, containers, CI/CD, and databases while solving real-world security and compatibility challenges.
• Growth and collaboration: join a team that values mentorship, clear ownership, and continuous improvement.

What you will do

• Implement features, enhancements, and bug fixes that enable successor and legacy systems to co-exist reliably.
• Build and maintain back-end services, RESTful APIs, and integration layers with a focus on security, performance, and maintainability.
• Develop and operate containerized services and CI/CD pipelines to deliver repeatable deployments into SCIF-capable environments.
• Design data storage and access patterns; run performance tests and optimize queries for MongoDB, PostgreSQL, Redis, and Elasticsearch.
• Work in Agile teams: participate in sprint planning, code reviews, architecture discussions, and continuous-improvement efforts.
• Produce clear documentation, unit/integration tests, and runbooks so deployments are auditable and repeatable.
• Independently manage multiple complex assignments with minimal oversight and propose innovative technical solutions.

• TS/SCI clearance with a current CI polygraph (required).
• Bachelor’s degree + 6+ years of software/application development experience - or 8+ years’ experience in lieu of degree. Recent hands-on experience (within last 2 years) preferred.
• 2+ years modernizing or maintaining legacy systems alongside new development.
• Strong back-end skills with Node.js + TypeScript (NestJS/Express familiarity preferred).
• Containerization experience (Docker) and practical knowledge of CI/CD pipelines (GitLab CI or similar).
• Experience with databases and search platforms: MongoDB, PostgreSQL, Redis, Elasticsearch/OpenSearch.
• Proven ability to manage complex workstreams independently and communicate technical tradeoffs to stakeholders.
• Comfortable working in secure environments with strict operational controls and documentation requirements.

What we’d like you to have

• Familiarity with Angular or front-end integration (useful for integration validation).
• Experience with Jest or other test frameworks and performance benchmarking.
• Exposure to cloud providers (Azure, AWS) and container orchestration basics (Kubernetes).
• Knowledge of metadata, data catalogs, or governance concepts (lineage, schema, classification).
• Additional server-side languages (Java, Python) or middleware/integration experience.

BigBear.ai is a leading provider of AI-powered decision intelligence solutions for national security, supply chain management, and digital identity. Customers and partners rely on Bigbear.ai’s predictive analytics capabilities in highly complex, distributed, mission-based operating environments. Headquartered in McLean, Virginia, BigBear.ai is a public company traded on the NYSE under the symbol BBAI. For more information, visit and follow BigBear.ai on LinkedIn: @BigBear.ai and X: @BigBearai.

BigBear.ai is an Equal opportunity employer all protected groups, including protected veterans and individuals with disabilities.