About Charles
English
Native or bilingual
Experience
- SAICSenior Software Engineer / Principal SMEAugust 2024 - June 2025 (10 months)• ● Owned the design and implementation of the organization's first secure WebRTC-based real-time communication platform (Node.js, React, Socket.io), enabling remote fighter-pilot training.• ● Guided and unblocked a 5+ engineer team through secure build and deployment workflows across classified environments.• ● Improved release efficiency by defining and streamlining CI/CD pipelines for controlled deployments.• ● Identified and remediated vulnerabilities across application code, OS images, and container builds, strengthening overall security posture.• ● Provided architectural guidance for CUI and classified systems, ensuring compliance with DoD standards (DISA, STIGs, NIST).
- UnitedHealth Group / Optum / Change HealthcareSenior Full-Stack EngineerDecember 2023 - June 2024 (6 months)• ● Owned development and optimization of large-scale React/TypeScript applications on Azure supporting national healthcare operations.• ● Improved application performance and front-end stability by defining and implementing targeted architectural refinements.• ● Established and authored comprehensive automated test suites, increasing reliability and reducing regression issues.• ● Drove alignment with product, design, and engineering teams (30+ members) to ensure technical delivery met roadmap goals.• ● Applied design thinking methodologies to define and deliver user-centered workflows and prototypes.
- American ExpressSenior Software Engineer II / Team LeadNovember 2021 - April 2023 (1 year and 5 months)• ● Owned modernization and consolidation of React/Redux architecture for enterprise customer-facing applications.• ● Drove improvements to bundle size, page load performance, accessibility, and internationalization across multiple product lines.• ● Defined and introduced standardized front-end libraries and components aligned with updated design language systems.• ● Provided technical leadership across cross-functional squads, supporting and unblocking junior developers.
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Education
- CompTIA Security+U.S. Department of Defense Secret ClearanceCompTIA Security+