Senior Application Developer

  • GovCIO LLC
  • Fairfax, Virginia
  • 10/02/2026
Full time Information Technology Telecommunications

Job Description

GovCIO LLC seeks a Senior Application Developer to design, build, and modernize secure enterprise applications for federal agencies within our Information Technology (IT) & Digital Solutions team. You will lead end-to-end development using modern languages, frameworks, APIs, and cloud platforms to deliver scalable, resilient, and compliant solutions that improve mission outcomes and citizen services. In our mission-driven, collaborative, and fast-paced culture, you'll mentor developers, shape technical direction, and apply DevSecOps and agile practices. This role offers the opportunity to work with modern tech, support high-impact government programs, and grow your skills through dedicated training and mentorship while contributing to large-scale digital transformation initiatives.

Responsibilities

  • Design, develop, and maintain secure, scalable enterprise applications for federal customers.
  • Lead solution design, code reviews, and technical guidance for mid-level and junior developers.
  • Collaborate with product owners, analysts, and UX to refine requirements into technical solutions.
  • Implement and integrate RESTful services, microservices, and cloud-native components.
  • Ensure code quality through automated testing, code reviews, and Dev
  • Sec
  • Ops best practices.
  • Optimize performance, reliability, and security in alignment with federal standards and policies.
  • Contribute to architecture decisions, technical documentation, and modernization roadmaps.
  • Support agile ceremonies and mentor team members on modern engineering practices.

Required Skills

  • Java or C# enterprise development
  • Java
  • Script/Type
  • Script and modern front-end framework (React or Angular)
  • RESTful API design and development
  • Microservices architecture
  • Relational and No
  • SQL databases (e.g., PostgreSQL, SQL Server, Mongo
  • DB)
  • Cloud platforms (AWS or Azure)
  • CI/CD pipelines (Jenkins, Git
  • Lab CI, or Git
  • Hub Actions)
  • Containerization and orchestration (Docker, Kubernetes)
  • Automated testing (unit, integration, API)
  • Agile/Scrum software development practices