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Senior Full Stack Engineer

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BLN24

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Location:
United States , McLean

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Category:
IT - Software Development

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Contract Type:
Not provided

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Salary:

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Job Description:

The Senior Full Stack Engineer will support the modernization of IRS mission-critical API ecosystems and cloud-native applications. This role requires technical leadership across the software development lifecycle, with a focus on designing, developing, and maintaining secure, scalable APIs and full-stack applications that interface with legacy systems, cloud platforms, and AI/ML services.

Job Responsibility:

  • Design and develop scalable APIs using REST, GraphQL, and gRPC in compliance with IRS enterprise architecture and security standards (OAuth, JWT)
  • Lead full-stack development of modern, modular web applications that interface with IRS systems and external users
  • Decompose and migrate legacy system functionality (e.g., COBOL-based command codes) into modern service-oriented components
  • Integrate AI-driven services, including ML model endpoints, auto-generated documentation, code conversion workflows, and intelligent test automation
  • Implement CI/CD pipelines and automated testing tools (e.g., Postman, Newman) to ensure secure, validated, and maintainable code
  • Collaborate with DevOps and Site Reliability Engineers to embed observability tools (e.g., Prometheus, Datadog, New Relic) and monitoring dashboards
  • Translate business and functional requirements into API contracts and reusable service patterns, working within Agile Scrum teams
  • Maintain backward compatibility with legacy systems while building toward scalable, cloud-optimized services
  • Ensure IRS and Treasury IT governance compliance, including Section 508 accessibility and cybersecurity policies

Requirements:

  • Bachelor’s degree in Computer Science, Engineering, or related field
  • Minimum 6 years of experience in full-stack software development and architecture
  • Demonstrated expertise in designing and implementing RESTful and GraphQL APIs, and building service-oriented architectures
  • Proficiency with front-end frameworks such as React, Angular, or Vue, and backend technologies such as Node.js, Python, Java, or Spark
  • Solid working knowledge of core web technologies, including HTML, CSS, JavaScript, and modern UI component libraries
  • Hands-on experience with cloud platforms (AWS, GCP, Azure) and container orchestration tools including Kubernetes and OpenShift
  • Familiarity with platforms such as Databricks for data engineering, pipeline integration, or ML model support
  • Experience designing scalable, secure web applications and microservices architectures with considerations for caching, authentication, and maintainability
  • Working knowledge of SQL and NoSQL databases, CI/CD pipelines, infrastructure-as-code, and cloud monitoring tools
  • Experience collaborating in Agile delivery environments, and contributing to code reviews, documentation, and team-based development workflows
  • Ability to lead development initiatives, mentor junior engineers, and provide architectural guidance across full-stack systems

Nice to have:

  • Experience with containerization tools and microservices frameworks (e.g., Docker, Kubernetes, OpenShift)
  • Familiarity with automated testing frameworks and DevOps pipelines
  • Exposure to mobile/web hybrid frameworks or performance optimization techniques in distributed systems
  • Background in API-first development and reusable design patterns in large-scale environments
  • Prior experience working with IRS, Treasury, or other federal IT systems a plus
What we offer:
  • Generous medical, dental, and vision plans
  • Opportunity to work in different sectors
  • Flexibility to balance quality work and personal lives
  • Remote working opportunities

Additional Information:

Job Posted:
January 04, 2026

Employment Type:
Fulltime
Work Type:
Remote work
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