Sr Backend Developer

Role Description The Sr. Back-End Developer will focus on building secure, scalable, and high-performing server-side applications and APIs. 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 cloud and security standards. Responsibilities 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. 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, GitHub Actions, and SonarQube, 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. 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. Qualifications Bachelor's degree in Computer Science, Software Engineering, or related field. This position requires the ability to obtain and maintain a Public Trust background investigation. 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 systems. Staff-Like Access: Contractor personnel must receive a favorable suitability determination before being granted staff-like access to IRS information systems. 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 cloud environments, FedRAMP, FISMA, and NIST 800-53 standards. Experience with tools such as Jenkins, Git, SonarQube, NexusIQ, Selenium, and AppDynamics. Requirements CompTIA Sec+ (or equivalent baseline DoD 8570 IAT Level II certification) (Preferred). AWS Certified Developer – Associate (or equivalent cloud certification) (Preferred). 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). Benefits The salary compensation range for this position is $130,000 - $150,000. Compensation decisions depend on a wide range of factors, including but not limited to skill sets, experience and training, security clearances, licensure and certifications, and other business and organizational needs. U.S Citizenship is required. Select applicants will be subject to a government security investigation and must meet eligibility requirements for access to classified information and be able to obtain a government-granted security clearance. Individuals may also be subject to a background investigation including, but not limited to criminal history, employment and education verification, drug testing, and creditworthiness.