What are the responsibilities and job description for the Software Developer (Backend) Senior position at internal-bigbearai?
Overview
Join BigBear.ai to modernize and connect mission-critical systems for the Defense Intelligence Agency—blend modern cloud-native engineering with legacy compatibility to deliver secure, reliable services that analysts and operators depend on.
Why this role is exciting
- 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.
What you should have
- 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.
About BigBear.ai
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 https://bigbear.ai/ 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.