Full Stack Software Developer

Full Stack Software Developer

Congressional Budget Office (CBO) seeks a Full Stack Software Developer to support the ongoing development, enhancement, testing, deployment, and maintenance of web applications and supporting backend services within its technology portfolio. The selected consultant will work closely with CBO technical teams to deliver secure, scalable, and maintainable software solutions utilizing modern engineering practices and continuous delivery methodologies. The contractor will contribute across the full application stack, including Python-based backend APIs, ReactJS front-end applications, PostgreSQL databases, Docker containerization, and AWS cloud-hosted environments. Development activities will follow a trunk-based development model with frequent integration, peer-reviewed code, and adherence to established coding, security, and quality standards.

• Design, develop, test, and deploy new features and enhancements across ReactJS front-end and Python/FastAPI back-end applications.
• Build and maintain RESTful APIs using FastAPI with proper validation, error handling, versioning, and documentation.
• Develop responsive and accessible user interfaces in compliance with Section 508 accessibility requirements.
• Design and maintain PostgreSQL database objects including tables, queries, migrations, and stored procedures.
• Participate in trunk-based development workflows, code reviews, and collaborative software delivery processes.
• Work closely with engineers, analysts, and stakeholders to refine requirements and deliver working software iteratively.
• Package and deploy applications using Docker containers.
• Support deployment and maintenance of applications within AWS cloud environments.
• Collaborate with infrastructure teams on environment configurations, secrets management, and cloud resource utilization.
• Investigate and resolve software defects, performance bottlenecks, and security vulnerabilities.
• Refactor existing code to improve maintainability, performance, and test coverage.
• Monitor applications and logs using AWS CloudWatch and related monitoring tools.
• Develop and maintain automated unit, integration, and regression tests.
• Participate in user acceptance testing and quality assurance activities.
• Maintain technical documentation including APIs, architecture diagrams, developer guides, and operational procedures.
• Participate in sprint planning, reviews, retrospectives, and knowledge transfer activities.

Required Skills

• Strong experience with Python application development.
• Experience developing APIs using FastAPI.
• Hands-on experience with ReactJS front-end development.
• Strong PostgreSQL database development and optimization skills.
• Experience with Docker containerization technologies.
• Knowledge of AWS cloud services including EC2, S3, RDS, CloudWatch, IAM, and VPC.
• Experience developing and consuming RESTful APIs.
• Experience with Agile/Scrum software development methodologies.
• Strong understanding of software testing, debugging, and quality assurance practices.
• Experience with source control systems and code review processes.
• Strong technical documentation skills.
• Ability to work in collaborative development environments.

Preferred Skills

• Experience with GitHub Actions, Terraform, or similar CI/CD and Infrastructure as Code tools.
• Experience supporting federal government environments.
• Knowledge of NIST SP 800-53, NIST SP 800-171, FISMA, and secure coding practices.
• Experience with AWS ECS, EKS, or similar container orchestration services.
• Experience working in trunk-based development environments.

Security Clearance: Public Trust Tier 2 Clearance Required Contract Term: 08/15/2026 – 08/14/2031 Place of Performance: Remote Preferred; Onsite support may be required at CBO facilities in Washington, DC 20515