Back-End Developer, Senior

Position Title:
Back-End Developer, Senior

Location:
Remote

Clearance:
*** IRS Public Trust MBI Required***

Salary Range: $170,000-$190,000K

Command Cyber Solutions is seeking a highly experienced Back-End Developer, Senior to support the IRS Business Tax Account (BTA) modernization initiative as part of the Taxpayer Experience (TXE) Strategy. This role will focus on building secure, scalable, and high-performing server-side applications and APIs that support taxpayer-facing digital services. The developer will work closely with cross-functional teams, including front-end engineers, Dev Ops, cybersecurity, and IRS stakeholders, to design, develop, and maintain back-end solutions aligned with IRS cloud and security standards.

This position is a remote position, with potential for periodic on-site presence in Washington, D.C., for key technical meetings, design sessions, or project milestones.

• Lead the design and development of secure back-end services, RESTful APIs, and microservices that integrate with IRS digital platforms.

• Implement best practices for cloud-native applications in an AWS and Kubernetes-based environment, ensuring compliance with IRS Publication 4812, NIST 800-53, and FISMA requirements.

• Troubleshoot and resolve production issues, providing root cause analysis and implementing long-term fixes.

• Contribute to performance tuning, scalability testing, and capacity planning to meet IRS standards for availability and load performance.

• Collaborate with product owners, technical leads, and stakeholders to refine user stories and translate them into functional back-end features.

• Support CI/CD processes using Jenkins, Git Hub Actions, and Sonar Qube, including automated testing and secure deployments.

• Perform unit testing, integration testing, and assist in developing automated test cases to ensure 90%+ code coverage for critical functionality.

• Bachelor's degree in Computer Science, Software Engineering, or related field.

• IRS Public Trust Security Clearance (Required).

• CompTIA Sec+ (or equivalent baseline DoD 8570 IAT Level II certification) (Preferred).

• AWS Certified Developer – Associate (or equivalent cloud certification) (Preferred).

• 7+ years of back-end development experience, including at least 3+ years in a senior or lead developer role.

• Experience working in Agile/Scrum environments delivering iterative releases.

• Familiarity with IRS cloud environments, FedRAMP, FISMA, and NIST 800-53 standards.

• Experience with tools such as Jenkins, Git, Sonar Qube, NexusIQ, Selenium, and App Dynamics.

• Expertise in back-end programming languages and frameworks (e.g., Java, Node.js, or Python) and API design for enterprise applications.

• Strong understanding of secure software development, including encryption, authentication/authorization, and compliance with federal cybersecurity standards.

• Proficiency in designing and implementing RESTful APIs, microservices, and database schemas in a cloud-based environment.

• Hands-on experience with CI/CD pipelines, containerization (Docker/Podman), Kubernetes, and AWS cloud services.

• Ability to architect scalable, maintainable back-end solutions aligned with enterprise security and compliance requirements.

• Ability to lead technical decision-making and collaborate effectively with cross-functional Agile teams.

We recognize that our success begins with our people. We are dedicated to fostering a professional, collaborative, and growth-oriented environment where employees are empowered to excel and advance their careers, CCS offers opportunities to contribute to high-impact federal initiatives, supported by robust professional development programs, competitive compensation, comprehensive benefits, and flexible work arrangements. We prioritize investing in our workforce, ensuring each team member has the resources, support, and career pathways to achieve long-term success while delivering meaningful results for our clients.

At CCS, you’ll be…