Senior Software Engineer

BigBear.ai; Columbia (MD); Remote; USD 140,000 - 190,000; Full time

Job summary

BigBear.ai is seeking a Senior Software Engineer to modernize the ORION Decision Support Platform under a multi-year contract. This remote role requires a SECRET clearance and may involve occasional CONUS travel. You will contribute across full‑stack layers using Angular, .NET, SQL Server, and Git CI/CD.

The ideal candidate will implement UI components, build REST services, write tests, and optimize performance to meet IL5 SLAs while collaborating with DoD data feeds and DevSecOps teams.

Qualifications

• Bachelor's degree in Computer Science, Engineering or related discipline.
• 5+ years professional software development with full-stack responsibility.
• Hands-on Angular, TypeScript, RxJS, and component-driven architecture.
• Proficiency with C#/.NET 8, Web API, Entity Framework.
• Experience with SQL Server and query optimization.
• Git/GitLab with branching strategies and merge requests.
• Docker fundamentals and basic Kubernetes familiarity.
• Working knowledge of automated testing and CI/CD concepts.

Responsibilities

• Develop and maintain features across front-end and back-end.
• Implement UI in Angular, SCSS, and PrimeNG; build REST services in C#/.NET.
• Write unit/integration/end-to-end tests and mocks.
• API and data-layer integration.
• Design REST endpoints; optimize SQL Server queries.
• Collaborate with ETL engineers to integrate data sources.
• Contribute to DevSecOps, CI/CD pipelines and containerization.
• Address static analysis, vulnerability findings, and DISA STIG tasks.
• Participate in code reviews and adhere to SOLID principles.
• Document decisions and operational runbooks.
• Troubleshoot and tune performance for IL5 SLAs.

Skills

Angular

TypeScript

RxJS

C#/.NET

REST APIs

Education

Bachelor's degree in CS/Engineering

Tools

Git/GitLab

Docker

Kubernetes

CI/CD

Job description

Residency

All applicants must currently reside in the United States

Overview

BigBear.ai is seeking a Senior Software Engineer to support the development team in modernizing the ORION Decision Support Platform - the DoW's enterprise system for global force-readiness insight-under a new multi-year contract.

Location: Remote * Occasional CONUS travel may be required.

In this hands-on role you will apply relevant experience to evaluate, make recommendations, implement, and oversee development and deployment activities. The ideal candidate will have knowledge of but not limited to Angular, .Net, SQL Server, and Gitlab/GitHub/bitbucket CI/CD.

What you will do

• Feature development & maintenance
• Implement UI components in Angular, SCSS, and PrimeNG; build REST services in C#/.NET.
• Write unit, integration and end-to-end tests; create mocks and stubs as needed.
• API & data-layer integration
• Design and consume REST endpoints; optimize database access using SQL Server (stored procs, indexing).
• Work with ETL engineers to pull data from data repositories and other DoD feeds into data model.
• DevSecOps & CI/CD
• Contribute pipeline definitions in Git CI, containerize services with Docker, and write Helm values for Kubernetes deployments.
• Address static-code scans, container vulnerability findings and DISA STIG hardening tasks.
• Code quality & collaboration
• Participate in peer reviews, pair-programming and backlog refinements; follow clean-code and SOLID principles.
• Document technical decisions, API contracts and "run books" for operational hand-off.
• Troubleshooting & performance tuning
• Profile front-end load times, tune .NET memory/CPU usage and optimize SQL queries to meet IL5 performance SLAs.
• Investigate production issues, create post-mortems and implement corrective actions.

What you need to have

• SECRET clearance
• Bachelor's degree in Computer Science, Engineering or related discipline (equivalent experience considered).
• 5+ years professional software development with full-stack responsibility.
• Hands‑on expertise in:
• Angular and modern TypeScript, RxJS and component-driven architecture.
• C#/.NET 8, Web API, Entity Framework for data access.
• SQL Server schema design, query optimization and stored procedures.
• Git/GitLab, branching strategies and merge-request workflows.
• Docker fundamentals and at least basic familiarity with Kubernetes or other container orchestration.
• Working knowledge of automated testing and CI/CD concepts.

What we’d like you to have

• Ability to obtain and maintain a DoD TS/SCI clearance (existing clearance a plus).
• Experience with military or defense systems
• Experience with cloud platforms specifically AWS
• Database management systems, including SQL Server
• API development and integration
• Experience with cloud-based development and deployment
• Strong communication skills for collaborating with diverse teams

Pay transparency

Please note the targeted compensation range is provided as an estimate, and any actual compensation offer may vary depending on the needs of the company, or an applicant’s skillset, competencies, experience, education, certifications, location or other factors. The estimated range does not include the value of any benefits offered.

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.