Christopher Santiago

I am a Senior Full Stack Engineer with 10+ years of experience building scalable web and mobile applications. I specialize in React, TypeScript, and modern frontend architecture with strong focus on performance and usability. I also design APIs and cloud systems using AWS and Docker. I deliver clean, reliable, and scalable production solutions.

Senior Full Stack Engineer at Accenture (2025-02 – 2026-02)

Led development of scalable web applications and microservices architecture with focus on performance optimization and security implementation.

• Led development of scalable web apps, improving performance by 30% through optimized frontend rendering and efficient API design across distributed systems.
• Designed microservices architecture, reducing downtime by 25% and improving deployment flexibility using clear service boundaries and fault-tolerant patterns.
• Built high-performance React apps with TypeScript, reducing load time by 40% using code splitting, memoization, and optimized component structures.
• Implemented JWT and OAuth2 authentication, ensuring secure access across multiple services and improving system-wide security standards.
• Deployed containerized services using Docker and AWS ECS, improving release speed by 35% with automated CI/CD pipelines.
• Integrated enterprise APIs, reducing manual processes by 20% and improving data consistency across multiple business workflows.
• Optimized queries and caching, reducing API response time by 45% and improving user experience under heavy traffic.
• Collaborated with teams to deliver features aligned with business needs while maintaining high code quality and performance standards.
• Mentored developers through reviews and guidance, improving team productivity and enforcing best engineering practices.

Full Stack Engineer at AJRON (2022-05 – 2024-11)

Delivered full-stack features with focus on responsive UI design, REST API development, and legacy system refactoring.

• Delivered full-stack features, improving delivery speed by 25% through reusable components and modular architecture design.
• Built responsive React interfaces, improving user engagement and reducing bounce rates by 20% through better UI performance.
• Developed REST APIs for web and mobile apps, ensuring stable data flow and scalable backend services.
• Refactored legacy systems, reducing technical debt and improving long-term maintainability and performance stability.
• Worked with design teams to build consistent UI patterns, reducing rework and improving development efficiency.
• Automated CI/CD pipelines, reducing deployment errors and improving release consistency across environments.
• Improved SEO and frontend performance, increasing page speed and search visibility across applications.
• Provided production support, resolving issues quickly and maintaining system uptime during peak usage.

Full Stack Developer at Emceee IT Solutions LLC (2019-04 – 2022-03)

Built full-stack features with emphasis on REST API development, third-party integrations, and performance optimization.

• Built full-stack features, improving development efficiency by 20% through reusable components and modular services.
• Developed REST APIs with validation and error handling, ensuring reliable and consistent data processing.
• Integrated third-party APIs, expanding functionality and improving user experience across applications.
• Automated workflows, reducing setup time and improving team productivity across development environments.
• Optimized performance through query tuning and frontend improvements, reducing latency and improving responsiveness.
• Resolved production issues across systems, reducing downtime and improving system reliability.
• Collaborated with teams to deliver features aligned with business and user requirements.
• Improved code quality through testing and adherence to modern development standards.

Web Developer at Sketch Development (2016-09 – 2019-02)

Developed responsive web interfaces with focus on frontend code quality, bug fixes, and stakeholder collaboration.

• Developed responsive interfaces, improving usability across devices and browsers.
• Refactored frontend code, improving maintainability and reducing future development effort.
• Implemented validation logic, reducing data errors and improving user input accuracy.
• Worked with stakeholders to deliver features within timelines and requirements.
• Fixed UI bugs and performance issues, improving stability in production environments.
• Used Git workflows to support consistent and reliable feature delivery.

Bachelor's Degree in Computer Science – Texas State University Round Rock Campus (2012 – 2016)