Christian Alejandro Herrejon Villa Senior Software Engineer

Software Engineer

3Pillar

Apr 2025 - Current (1 year 3 months)

• Ensured code quality and maintainability by performing over 20 rigorous code reviews per sprint on Git, successfully reducing critical defects found in production by 15%. • Enhanced application performance through the implementation of efficient state management using Redux and optimized complex data forms utilizing Formik, directly supporting the stability of high-traffic user workflows. • Participated in the Scrum development process, consistently resolving 95% of assigned backlog bugs and providing technical input during sprint planning to ensure accurate effort estimation and delivery velocity. • Actively contributed to develop new component built following a pixel-perfect approach to achieve the best UX using Material UI.

L

Lead Application Developer

Mar 2025 - Nov 2025 (9 months)

• Actively contributed to the architecture and planning for a new reusable component library built with Stencil.js and Storybook, which streamlined feature development and ensured UI/UX consistency across applications. • Ensured code quality and maintainability by performing over 20 rigorous code reviews per sprint on Git, successfully reducing critical defects found in production by 15%. • Participated in the Scrum development process, consistently resolving 95% of assigned backlog bugs and providing technical input during sprint planning to ensure accurate effort estimation and delivery velocity. Additionally, I utilized React.js to develop certain views within the project, complementing the primary focus on Stencil.js and enhancing the

Senior Software Engineering

Techmahindra

Aug 2024 - Current (1 year 11 months)

Software Engineer

EPAM Systems

Apr 2022 - Aug 2024 (2 years 5 months)

Actively contributed to developing CustomHooks, enhancing functionality and user interaction within our applications. 60% Streamlined state management and workflow using React Query, optimizing data retrieval and boosting application performance. 30% Rigorously ensured application reliability through unit testing with Jest, maintaining consistency in performance. 30% Mentored a junior developer for a year, supporting their growth and success. 50%

Consultant

Apex Systems

Aug 2021 - Apr 2022 (9 months)

Played an active role in a Scrum team, utilizing Jira and React for productivity and web application development. Participated in codebase enhancements and systematic refactoring to improve software quality. Conducted rigorous unit testing, ensuring optimal application performance to achieve code coverage above 80%. Contributed to integrating GraphQL API with Apollo, enabling efficient data management. Developed reusable components with pure HTML to enhance application flexibility and maintainability. Additionally, I utilized TypeScript to implement new components into the GoExpedi Application, further improving the overall functionality and maintainability of the project.

Front-End Developer

TrueHome

Feb 2021 - Aug 2021 (7 months)

Development of components using React

Consultant

Intersys Inc

Aug 2019 - Feb 2021 (1 year 7 months)

Supported the integration of payment providers using React, Angular, PHP, and Ruby on Rails technologies. 100% Contributed as a Full Stack Developer in a Scrum team, utilizing Jira for workflow management. Helped craft web applications and robust architectures using Docker. 10% Contributed to unit testing efforts to ensure software reliability. 100%

Application Developer

Scio Consulting

Jul 2018 - Aug 2019 (1 year 2 months)

Acted as a proactive Full Stack Developer in a SCRUM team, utilizing TFS for project management. 100% Crafted web applications with React and developed insightful reports using SSRS. 50% Enhanced system functionality by implementing Laravel for API services. 50% Improved media management through a Golang microservice. 10% Led the full-cycle creation and deployment of multi-platform Android/iOS apps using React Native. 25%

Christian Alejandro Herrejon Villa

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