Senior Lead Developer- Security Clearance

Position: Senior Lead Developer- 3635121 with Security Clearance
Computer Technologies Consultants (CTC) is seeking a Senior Lead Developer to support the Federal Mediation and Conciliation Service (FMCS) headquartered in Washington, DC. This will be a full-time, on-site position. With offices in Washington DC and San Diego, CA, CTC is a leading technology company providing lifecycle IT, data analytics, cloud, agile software development, Dev Ops, Test Automation, Cyber Security, and infrastructure solutions.

Additionally, we provide Professional Talent Acquisition Services as we proudly support the unique needs of U.S. Defense, Intelligence, and Federal Civilian agencies as well as Fortune 1000 companies.

Job Description :
We are seeking a highly skilled, hands-on Senior Lead Developer to spearhead the engineering efforts for the FMCS enterprise application ecosystem. In this role, you will be responsible for all core coding, system customization, bug fixing, and technical troubleshooting across the agency's Microsoft 365, Azure, and custom .NET environments. As a designated Key Personnel member, you will translate architectural designs into secure, production-grade code, guide junior/peer developers through rigorous code reviews, and champion modern Dev Sec Ops  practices to deliver continuous value to over 20,000 internal and external users.

Core Responsibilities :
Full Lifecycle Application Development & Coding (CLIN 0002 & CLIN 0003)
* Core Engineering:
Lead all development, coding, and integration efforts across the FMCS technology stack for both minor adjustments ($
* Custom Ecosystem Evolution:
Build, refactor, and maintain custom applications using C#, .NET, and SQL Server backends-including the high-priority Arbitration management system hosted on Azure VMs.
* Microsoft 365 & Power Platform Customization:
Develop advanced low-code/pro-code hybrid solutions featuring Power Apps (Canvas and Model-Driven), Power Automate flows, Power Pages portals, Power BI dashboards, and underlying Dataverse data models.
* Web Environment Modernization:
Remediate and modernize public-facing web environments, transitioning legacy Word Press/Apache footprints over to cloud-ready, compliant target states. Software Development Standards & Dev Sec Ops  Implementation
* Code Review & Mentorship:
Conduct mandatory peer reviews of all code modifications before they are merged into the main branch to guarantee security, logic, and style compliance.
* Automated Testing:
Write and maintain comprehensive automated test coverage for all new code deliveries, ensuring verified test results are integrated seamlessly into Agile sprint reviews.
* CI/CD Guardrails:
Support the implementation and daily operations of Continuous Integration/Continuous Delivery (CI/CD) pipelines, responding to automated security scans (SAST and DAST).
* Version Control:
Ensure all developed source code is rigidly maintained within Government-accessible, version-controlled repositories. Security, Supply Chain & Accessibility Engineering
* Vulnerability Remediation:
Actively troubleshoot, isolate, and resolve system performance issues, software bugs, and security vulnerabilities identified by continuous monitoring and threat assessments.
* Secure Software Supply Chain:
Implement secure coding practices and generate compliant Software Bill of Materials (SBOM) documentation for production releases per federal directives (OMB M-24-15).
* Accessibility Adherence:
Build and test all front-end interfaces to guarantee native alignment with Section 508 and WCAG 2.0 Level AA accessibility standards, resolving automated and manual screen-reader testing exceptions promptly. Required Education, Experience, & Skills
* Enterprise Software Engineering:
Minimum of ten (10) years of experience engineering, supporting, and scaling enterprise-level IT systems.
* Cloud Development:
Minimum of five (5) years of direct coding and development experience inside cloud environments (specifically Azure Government/GCC Medium and AWS).
* Full-Stack Technical Proficiencies:
* Backend & Data:
Deep mastery of C#, .NET Framework/.NET Core, SQL Server, PostgreSQL, and cloud-native DBaaS architectures.
* Frontend & Open-Source:
Proficien…