Senior Software Engineer

CACI • Washington, DC

1d

About The Position

The Senior Software Engineer will support Department of War (DoW) Planning, Programming, Budgeting, and Execution (PPBE) applications by building and sustaining mission-critical defense financial and planning systems. The role owns end-to-end software architecture, spanning full-stack development and the integration of AI capabilities such as LLM-enabled features and intelligent document processing. The engineer helps establish standards for design, testing, code review, and ownership while working in both unclassified and classified environments.

Requirements

• Active Secret or Top Secret security clearance.
• Security+ certification.
• Bachelor's degree in Computer Science, Data Science, Mathematics, or a related STEM field.
• 10+ years of professional software development experience across the full SDLC.
• Direct, recent experience delivering software in the federal sector, with an understanding of federal-environment constraints.
• Direct experience with Python and JavaScript/TypeScript, plus React, NodeJS, and/or .NET.
• Demonstrated engineering discipline in sound design, testing, code review, and ownership.
• Experience with RESTful APIs and system integration.
• Proficiency with Git version control and CI/CD pipelines.
• Experience with Docker, Kubernetes, and at least one major cloud platform: AWS, Azure, or GCP.
• Strong written and verbal communication skills.

Nice To Haves

• Interest in or exposure to AI-enabled software engineering, including LLM APIs, prompt engineering, RAG architectures, agentic patterns, vector databases, orchestration frameworks, and LLM observability.
• Knowledge of DoD PPBE processes, defense budget formulation (POM, BES, J-Books, FYDP), or DoD financial systems such as NGRMS, GFEBS, DAI, or DEAMS.
• Experience with AWS GovCloud, AWS Bedrock, or Azure OpenAI Service.
• Working knowledge of Kubernetes, Terraform, or other infrastructure-as-code tools.
• Familiarity with ATO processes, NIST frameworks, or FedRAMP.
• Familiarity with Agile methodologies and Jira.

Responsibilities

• Design, build, and maintain full-stack applications using technologies such as React, TypeScript, NodeJS, Python, and .NET.
• Lead by example in sound software design, automated testing, code review, and ownership of delivered work.
• Mentor and support junior developers through code reviews, pairing, and technical guidance.
• Integrate AI-enabled features into production systems, including LLM/GenAI APIs, RAG pipelines, and agentic workflows.
• Architect reliable API integrations with strong error handling and graceful degradation.
• Troubleshoot and resolve system defects.
• Address security vulnerabilities and ensure compliance with DoW cybersecurity standards.
• Participate in GitLab CI/CD pipelines and collaborative development workflows.
• Document technical implementations and stay current with relevant technology developments.

Benefits

• Flexible time off benefit.
• Learning resources and learning and development opportunities.
• Healthcare, wellness, financial, retirement, family support, continuing education, and time off benefits.
• Competitive compensation and benefits.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior