Senior Software Engineer

Henrie Quintanilla

Senior Software Engineer

+1-405-***-**** *****************@*******.*** Los Angeles, CA Experienced senior software engineer with 8 years of hands-on expertise in software development. Skilled in JavaScript and Typescript, resulting in the successful delivery of many complex projects within deadlines. Proficient in the entire software development lifecycle, having contributed to requirements gathering, architecture design, and deployment of scalable applications. Committed to continuous learning and staying updated with emerging technologies and industry best practices. Core Skills

• JavaScript/Typescript • Python/Django/Flask/Pandas

• React/Angular/Vue.js • Cypress /React testing Library/Jest

• Node.js/Express/Nest.js • MongoDB/PostgreSQL

• AWS/GCP • Java/Spring Boot

• Rest API/GraphQL • Git/Agile Methodology

Experience

Toptal Senior Full Stack Engineer San Francisco, California Mar 2020 – Nov 2023

· Built a GPS tracking system from the ground up using React, Node.js, Restful APIs, AWS, and Docker, resulting in a 30% increase in efficiency and accuracy in location monitoring.

· Strong React Developer with experience in building responsive web applications from the ground up.

· Proficient in developing server-side applications and RESTful APIs, GraphQL APIs, including 3 projects utilizing Node.js and also integrated with databases like MongoDB or PostgreSQL using libraries such as Mongoose or Sequelize.

· Leveraged AWS services, including EC2, S3, Lambda, and SNS, to architect and deploy highly scalable and reliable microservice- based applications, resulting in improved performance and cost optimization.

· Experienced in implementing unit and end-to-end testing using frameworks such as Mocha, Jest, Postman and Cypress.

· Mentored a team of 5 junior developers, providing guidance, code reviews, and support throughout their professional growth, resulting in a 40% increase in their productivity and successful project deliveries.

· Led a cross-functional team of 5 engineers to develop and maintain complex software applications using React, Node.js, Microservices, Postgres, Docker, CI/CD, D3.js, AWS. Espirit technologies Pvt Ltd Full Stack Engineer Princeton, New Jersey May 2017 – Feb 2020

· Expanded user engagement by 125% by establishing a new advertising and leaderboard page with React.

· Achieved pixel-perfect, mobile-first, and interactive components for 2 React applications, showcasing a strong understanding of user experience design principles and resulting in a 35% increase in user satisfaction.

· Leveraged the power of Node.js and Express.js to architect and build a robust backend for a real-time chat system, handling concurrent connections and facilitating seamless communication between users.

· Developed and maintained digital solutions for an eLearning provider that connected managers, parents, and early educators using React, Node.js, Typescript, MongoDB, GraphQL, Rest API, Socket.io, WebRTC, GCP. Espirit technologies Pvt Ltd Frontend Engineer Princeton, New Jersey June 2015 – May 2017

· Collaborated with project managers, UX/UI designers, and QA engineers to successfully deliver 10 high-quality products, while implementing process improvements that streamlined communication among cross-functional teams.

· Built a fully responsive, home management platform using React, resulting in an average page load time of 2 seconds and a 30% improvement in website performance through image optimization and caching techniques.

· Upgraded website performance by 40% by implementing performance optimization techniques such as lazy loading and minification, resulting in faster page load speeds and an improved user experience.

· Contributed to the development of 15 highly functional, visually stunning interfaces using HTML, CSS, JavaScript, Sass, React, Angular, Bootstrap, Material UI, and Tailwind CSS as a frontend engineer. Education

The University of Texas at Dallas Aug 2011 – May 2015 Bachelor’s Degree — Computer Science

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