# Senior Software Engineer **Company**: GDIT **Location**: Chantilly, VA **Work arrangement**: onsite **Experience**: senior **Job type**: full-time **Salary**: $141,100 - $190,900 **Category**: Engineering **Industry**: Technology **Apply**: https://gdit.wd5.myworkdayjobs.com/en-US/External_Career_Site/job/USA-VA-Chantilly/Senior-Software-Engineer---TS-SCI-with-Polygraph_RQ230222-1?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply **Canonical**: https://yubhub.co/jobs/job_51fb172c-658 ## Description At GDIT, people are our differentiator. As a Senior Software Engineer supporting our Intelligence Community customer, you will be trusted to solve complex technical challenges while delivering mission-critical capabilities that directly support national security objectives. We are seeking a highly motivated and experienced software engineer with an active TS/SCI clearance with Polygraph to join an Operations and Maintenance (O&M) team responsible for supporting enterprise applications used across the Intelligence Community. In this role, you will collaborate with Agile development teams to maintain, enhance, and improve applications serving a broad range of IC customers. Responsibilities include responding to user inquiries, troubleshooting and resolving issues, implementing system enhancements, and supporting the ongoing evolution of mission-focused applications. In addition to sustaining the current production environment, the successful candidate will play a key role in the modernization effort to develop and transition users to a next-generation application, while supporting the planned decommissioning of the legacy platform. This position offers a unique opportunity to contribute to both operational support and the future architecture of a critical IC mission system. **HOW A SENIOR SOFTWARE ENGINEER WILL MAKE AN IMPACT:** - Provide Operations and Maintenance (O&M) support for mission-critical applications used by Intelligence Community customers. - Respond to user-reported issues and questions, troubleshoot problems, and implement solutions in a timely manner. - Design, develop, test, and deploy software enhancements and new capabilities. - Collaborate with stakeholders to gather requirements and translate business needs into technical solutions. - Participate in Agile ceremonies including sprint planning, daily standups, reviews, and retrospectives. - Maintain and improve application performance, reliability, and security. - Develop and maintain technical documentation and system artifacts for legacy system. - Support application integrations and data exchange with external systems and services. - Work closely with team members to continuously improve development, deployment, and support processes. - Support the lifecycle management of both legacy and modernized applications, ensuring continuity of operations throughout migration efforts. - Contribute to the design, development, testing, and deployment of a new application while maintaining and enhancing the existing production system. - Assist with planning and executing the decommissioning of legacy application components, services, and infrastructure. **REQUIRED SKILLS AND EXPERIENCE:** - Self-starter mentality with a strong desire to learn and deliver solutions efficiently to customers. - Strong understanding of software design fundamentals and object-oriented programming principles. - Experience applying modern software engineering principles including SOLID, DRY, KISS, and YAGNI. - Experience working in Linux-based development environments. - Understanding of Git/GitHub source control and Agile development methodologies. - Experience architecting and developing web applications. - Experience developing applications using Ruby on Rails. - Experience with JavaScript frameworks such as ExtJS and/or VueJS. - Experience utilizing Bootstrap for responsive user interface development. - Experience deploying and supporting solutions in Amazon Web Services (AWS). **DESIRED SKILLS:** - AWS certifications. - Experience integrating and unifying records from multiple data sources. - Experience developing applications that consume and integrate external APIs. - Experience supporting applications in a secure Intelligence Community environment. - Understanding of DevSecOps practices and CI/CD pipelines. **WHAT YOU'LL NEED TO SUCCEED:** - Bachelor's degree in Computer Science, Software Engineering, Information Systems, or a related technical discipline. Equivalent combinations of education, technical certifications, training, and experience will be considered. - 6+ years of software development experience. - Experience supporting enterprise web applications in production environments. - Experience working within Agile software development teams. - Active TS/SCI with Polygraph required. - U.S. Citizenship required. **Location:** Chantilly, VA or McLean, VA **Salary Range:** $141,100 - $190,900 **Benefits:** - 401K with company match - Comprehensive health and wellness packages - Internal mobility team dedicated to helping you own your career - Professional growth opportunities including paid education and certifications - Cutting-edge technology you can learn from - Rest and recharge with paid vacation and holidays ## Skills ### Required - Complex Systems - Software Design - Software Development - Linux-based development environments - Git/GitHub - Agile development methodologies - Ruby on Rails - JavaScript frameworks - Bootstrap - Amazon Web Services (AWS) - Object-oriented programming principles - SOLID - DRY - KISS - YAGNI ### Nice to have - AWS certifications - Experience integrating and unifying records from multiple data sources - Experience developing applications that consume and integrate external APIs - Experience supporting applications in a secure Intelligence Community environment - Understanding of DevSecOps practices and CI/CD pipelines --- Source: [Apply at gdit.wd5.myworkdayjobs.com](https://gdit.wd5.myworkdayjobs.com/en-US/External_Career_Site/job/USA-VA-Chantilly/Senior-Software-Engineer---TS-SCI-with-Polygraph_RQ230222-1?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply)