Cesar Castillo Email & Phone Number

Raleigh, Nc, Us

New York, New York, Us

• Led a high-impact API expansion project that unified data for subsidiary entities, designing 200+ individual endpoints to streamline interdepartmental and B2B data access.• Collaborated across several teams to refine data outputs, ensuring the API met evolving requirements and supported long-term scalability.• Enhanced consumer sports pick tracking modules by incorporating new providers, enabling centralized tracking for over 1 million users, and boosting operational efficiency.• Developed live odds ingestion for multiple sportsbooks and expanded state feeds, contributing to significant user acquisition and revenue growth.• Pioneered CircleCI integration testing for .NET projects, reducing testing time and enhancing deployment efficiency through CI/CD best practices.• Supported acquisition efforts by delivering scalable data solutions and essential automation processes, directly contributing to the company’s growth trajectory.

Seattle, Washington, Us

• Developed server-side, database, and front-end components for a device procurement platform using ASP.NET, SQL, and JavaScript, enhancing client workflows.• Designed an invoice verification automation system with 100+ custom regex patterns, reducing annual labor by over 1,500 hours.• Conducted UAT, integration, and regression testing on automation solutions, ensuring readiness for production and seamless operational transitions.• Built an auto insurance application that streamlined quotes and customer management, leading to faster processing times and improved user satisfaction.

Portsmouth, Va, Us

• Diagnosed and resolved electrical and mechanical malfunctions of portal and mobile cranes, including over 30 emergency trouble calls and three unique, longstanding issues• Led a team of up to four electricians and mechanics in discovering efficient solutions by synthesizing team input and delegating work flow, with responsibility for documenting alterations suggested by team members• Documented details in accordance with the National Electric Code and internal quality control standards of each project to be replicated by other engineers, including issues identified, alterations made, and solutions reached• Conducted statistical analysis on reoccurring failures of electrical components and used data to assist the purchasing department in ordering critical components before anticipated failures • Designed electrical altercations to the original schematics of cranes to enhance the options available for safety testing on loads outside of standardized weight, size, and angle constraints• Created an external timekeeping system to provide accurate tracking of engine usage in the event of the original system’s failure that has since been implemented across four national shipyards

New Brunswick, Nj, Us

• Tutored over 20 students in math and science courses, including calculus, physics, and MATLAB by developing individualized supplementary materials to pinpoint and improve upon each students’ weak points