Back-End Developer, SME

Position Title: Back-End Developer, SME

Location: Washington DC Hybrid/Remote

Clearance: Public Trust/MBI

Position Summary:

Command Cyber Solutions is seeking a highly experienced Back-End Developer, SME 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, DevOps, cybersecurity, and IRS stakeholders, to design, develop, and maintain back-end solutions aligned with IRS cloud and security standards.

Essential Duties & Responsibilities:

• Serve as a subject matter expert in back-end architecture, API design, and cloud-native development for enterprise IRS applications.

• Lead the development of secure, scalable, and reusable back-end services leveraging Java, Node.js, or Python, and microservices architecture.

• Provide guidance on implementing secure coding practices, encryption, authentication, and compliance with federal cybersecurity standards.

• Support the refinement of user stories and technical requirements, advising on the best approaches to meet IRS system objectives.

• Collaborate with CI/CD pipeline integration, containerization, and deployment using Jenkins, GitHub Actions, Docker/Podman, and Kubernetes on AWS.

• Perform advanced troubleshooting, performance optimization, and root cause analysis for production systems.

• Mentor less experienced developers, performing code reviews and establishing coding standards and best practices.

• Collaborate with cybersecurity and product teams to ensure seamless integration of security and compliance requirements.

Education, Certification & Experience Requirements:

Education Required:

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

Certification Required:

• This position requires the ability to obtain and maintain a Public Trust background investigation in accordance with IRS and Department of the Treasury personnel security policies.

  • Minimum Requirements: Favorable Tier 2 - Moderate Risk Public Trust (SF-85P) investigation.

  • Elevated Eligibility: Tier 4 - High Risk Public Trust (SF-85P) investigation, if duties involve elevated system privileges, access to sensitive IRS systems, or handling Federal Tax Information (FTI).

  • Staff-Like Access: Contractor personnel must receive a favorable suitability determination before being granted staff-like access to IRS information systems.

  • Employment is contingent upon passing the required background investigation and maintaining eligibility throughout the period of performance.

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

• AWS Certified Developer - Associate (or equivalent cloud certification) (Required).

• Certified Scrum Developer (CSD) or other Agile-related certification (Preferred).

• AWS Certified Solutions Architect - Associate or Professional (Preferred).

• Certified Kubernetes Application Developer (CKAD) or similar container-related certification (Preferred).

• Certified Secure Software Lifecycle Professional (CSSLP) or similar secure software development credential (Preferred).

Experience Required:

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

• Proven experience in Agile/Scrum environments delivering iterative, high-impact releases.

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

• Hands-on experience with AWS cloud services, Kubernetes, Jenkins, Git, SonarQube, NexusIQ, and CI/CD pipelines.

Knowledge, Skills & Abilities:

• Deep expertise in enterprise-level back-end frameworks, RESTful API development, and database design.

• Strong understanding of federal cybersecurity and compliance standards, including NIST 800-53, FedRAMP, and FISMA.

• Mastery of cloud-native development, containerization, and deployment pipelines in AWS/Kubernetes environments.

• Advanced proficiency in secure software development, including encryption, identity management, and threat modeling.

• Ability to architect and guide large-scale, mission-critical systems for security, scalability, and maintainability.

• Ability to mentor developers and provide authoritative technical guidance to both internal teams and government stakeholders.

Working Conditions/Working Environment/Physical Demands:

• 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.

• Hours of operation are M-F between 0800-1630.

• Occasionally, project requirements may require temporary adjustment of work hours/days

• Duties are subject to change based on the needs of the customer

Why Join Command Cyber Solutions:

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.

Culture:

At CCS, you'll be a part of a team that genuinely supports one another and where leadership is invested in the well-being and success of every employee. We foster a work culture where people are valued for who they are, not just what they do, and where your career goals are taken seriously. You'll be encouraged to grow through mentorship, hands-on experience, and access to continued learning opportunities that align with your aspirations. Whether you're looking to deepen your expertise, earn new certifications, or take on leadership roles, CCS provides the environment and support to help you get there. Leadership is approachable, collaboration is natural, and success is shared. At CCS, you're not just joining a company; you're joining a community committed to your growth and success.

Benefits:

We offer a comprehensive benefits package designed to support the health, financial security, and overall well-being of our employees and their families. Our offerings include medical and prescription drug plans, dental coverage, group life insurance, and options for supplemental life insurance to provide additional protection. We also provide short-term and long-term disability insurance, flexible spending accounts, and employee assistance programs to help employees manage personal and professional needs. Our package also includes identity theft protection and a competitive 401(k) retirement savings plan with company contributions, giving employees valuable resources to protect their future and achieve long-term financial goals.

Command Cyber Solutions, LLC is an equal opportunity employer. Command Cyber Solutions LLC does not discriminate in employment opportunities or practices on the basis of race, color, religion, sex, national origin, age, disability, marital status or any other characteristic protected by law.

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