Web Developer (TS/SCI CI Poly)

Seamless Migration is seeking a career and customer-oriented Web Developer, to join our team in Chantilly, VA. Clearance TS/SCI W/ CI Polygraph (existing clearance required to start) Location Chantilly, VA Overview Support and modernize a portfolio of 100+ web applications for a government customer. The ideal candidate takes ownership of complex development efforts, evaluates technical options, and delivers reliable solutions using C#/.NET, HTML5, JavaScript, Bootstrap, CSS, SQL, and AWS. Responsibilities span requirements analysis, design, development, testing, deployment, troubleshooting, integrations, and application modernization. Collaborate with technical teams and customers while thoughtfully applying AI-assisted tools, such as Roo Code, to coding, testing, documentation, troubleshooting, and code review. Design, develop, enhance, test, and maintain web-based applications, including custom, commercial off-the-shelf (COTS), and government off-the-shelf (GOTS) solutions. Collaborate with analysts, UI/UX developers, subject-matter experts, and technical teams to translate requirements into effective solutions. Estimate development efforts and evaluate technical feasibility, risks, dependencies, resource needs, and operational impacts. Develop technical specifications, application designs, maintainable code, APIs, integrations, data-conversion routines, and SQL-based solutions. Use AWS services and related cloud technologies to design, develop, deploy, monitor, troubleshoot, and support cloud-based applications. Follow configuration management, change control, security, documentation, quality assurance, and release standards while recommending improvements. Conduct unit and formal testing; diagnose complex defects using code, logs, data, and system dependencies; coordinate resolution before production release. Identify and implement opportunities to improve application performance, usability, security, scalability, resiliency, and long-term maintainability. Provide technical input on decisions affecting projects and teams. Qualifications Minimum of two (2) years of relevant web development or software development experience. Experience developing, enhancing, testing, and supporting web applications using HTML, JavaScript, CSS, C#/.NET, and Bootstrap. Experience using AWS services to develop, deploy, monitor, troubleshoot, and support cloud-based or cloud-native applications. Strong knowledge of SQL, web development principles, software-development practices, coding standards, and application security. Ability to analyze complex technical issues, evaluate impacts and dependencies, and develop effective solutions with minimal supervision. Ability to estimate development efforts, manage competing priorities, and support complex projects in a dynamic team environment. Self-motivated, with the ability to take ownership of tasks, exercise sound technical judgment, and contribute to project and team objectives. Nice To Have Bachelor’s degree in Computer Science, Information Systems, Software Engineering, or a related field, or equivalent work experience. AWS certification, such as AWS Certified Developer – Associate or AWS Certified DevOps Engineer – Professional. Experience developing software with Python. Experience contributing to application architecture, system integration, modernization, or cloud-migration efforts. Experience with containerized or serverless applications and AWS services such as Lambda, ECS, RDS, or CloudWatch. Familiarity with Agile software-development methodologies and practices. Experience using AI-assisted development tools for coding, testing, documentation, troubleshooting, or code review. Experience supporting applications in Department of Defense (DoD) or Intelligence Community (IC) environments. Experience developing responsive, accessible web applications and applying Section 508 requirements. CompTIA Security+ certification. Benefits 100% paid Medical, Dental & Vision for Our Employees 6% 401K match (Vested Immediately) 29 Days' PTO Flexible Work Schedule Tuition/Certification Reimbursement Growth Opportunities w/in an Emerging Defense Company *All your information will be kept confidential according to EEO guidelines