Wilson Balderrama

Senior Frontend Engineer

Turning ideas into interactive experiences

ABOUT

Hi there! I'm a seasoned Frontend Engineer with over a decade of experience in leveraging JavaScript technologies to craft robust and innovative solutions. Throughout my career, I've had the privilege to work on a diverse range of projects, from small-scale applications to large enterprise systems. My expertise lies in building intuitive user interfaces that seamlessly blend functionality with design, enhancing user experiences across various platforms. My toolkit includes a deep understanding of modern JavaScript frameworks such as React, Next, etc. I thrive in dynamic environments, adapting quickly to emerging technologies and industry trends to deliver cutting-edge solutions. Beyond coding, I'm passionate about collaboration and teamwork. I excel in cross-functional settings, working closely with designers, product managers, and backend developers to transform ideas into reality. Let's connect and explore opportunities to collaborate on exciting projects together. Whether it's building groundbreaking applications or mentoring the next generation of developers, I'm always eager to contribute my expertise and passion for frontend development.

EXPERIENCE

  1. 2021 - 20243yrs

    Senior Frontend Engineer at PayPal

    As a Frontend Engineer at PayPal, I played a pivotal role in enhancing the checkout experience for millions of users worldwide. My responsibilities were: - Creating new features based on A/B Experiments. - Maintaining code quality through integration testing and clean code. - Having meetings with stakeholders, and design team presenting them the new features developed. Accomplishments: - Implemented the checkout web new design v2 at 2023, I played a key role in transitioning the checkout experience to the new design v2, meticulously applying design patterns and guidelines to ensure a cohesive and visually appealing user interface. This involved refactoring existing code, optimizing performance, and conducting thorough testing to guarantee a smooth rollout. The result was a sleek and intuitive checkout flow that elevated the overall user experience. These initiatives not only contributed to improving user satisfaction but also drove tangible business results, reinforcing PayPal's position as a leader in online payments. I'm proud to have been part of a talented team that continuously strives for excellence and innovation.

    Node
    React
    Next.js
    Typescript
    Jest
    React testing library
    WebdriverIO
    Playwright
    CSS
    HTML
    Microservices
  2. 2020 - 20201yr

    React native developer at tivelabs

    My responsibilities were to design and develop new features to a React native app: - Writing reusable, testable, and efficient code using JavaScript, Swift, and Java. - Effectively use tools to identify and fix defects. - Integration of data storage solutions as Firebase. Accomplishments: - Built an app that track drivers about which stores they pass to present them new products, discounts, coupons, etc.

    React native
    iOS
    Swift
    Objective-C
    Android
    Firebase
  3. 2015 - 20194yrs 3mos

    iOS Developer at Freelance

    I designed and built applications for the iOS Platform, ensuring the performance, quality, and responsiveness of applications. Identifying and correcting bottlenecks and fix bugs, I am proficient with Swift and Cocoa Touch, experience with UIKit, offline storage, threading. I have familiarity with RESTful APIs to connect iOS applications to back-end services, familiarity with push notifications also proficient understanding of code versioning tool git.

    iOS
    Swift
    Firebase
  4. 2015 - 20154mos

    Node.js Developer at Workep

    My responsibilities included to design and create server API endpoints: Writing reusable, testable, and efficient code. Provide Unit tests for each one new serviced created. Build RESTful APIs Effectively use tools to identify and fix defects before the become a problem. Integration of data storage solutions

    Node.js
    Hapi.js
    mocha
  5. 2014 - 20151yr 1mo

    Node.js developer at Exclusr

    During this time I was responsible for designing and implementing of all server-side logic, definition and maintenance of the central database. - Designing and calling API endpoints, writing unit tests and documentation. - Evaluate and improve the performance, durability, and security of applications in production. - Work closely with other engineers to design, build, and ship new features from scratch. - Build RESTful APIs.

    Nodejs
    Mongodb
    Express.js
  6. 2013 - 20147mos

    Fullstack developer at Freelance

    I was handpicked for this position to build the back-end and front-end solutions. I worked with business users to gather functional requirements so that I could implement these user stories into features, using the best practices to product high performing/scalable/secured modules. I assisted with future scripted API’s and websocket investigations.

    Angular.js
    Node.js
    HTML
    CSS
  7. 2013 - 201311mos

    .NET Frontend Developer at Thomson Reuters

    I was assigned to developing a web application, my responsibilities were: - Maintain code quality through unit testing. - Document code appropriately for maintainability. - Communicate with business analysts to gather accurate specifications for new enhancements and applications. - Translate requirements into functional code. - Collaborate with team members on projects

    ASP.NET
    SQL Server
    jQuery
    HTML5
  8. 2011 - 20121yr

    .NET Backend Developer at Thomson Reuters

    I was hired as a .NET Developer to design, develop, maintain the database using T-SQL scripts to ensure the database in consistent with requirements. Troubleshooting and resolving database problems using SQL Profiler.

    ASP.NET
    C#
    SQL Server
    T-SQL
  9. 2010 - 20111yr 3mos

    .NET Developer at Jalasoft

    During this time, I participated in a internal project where my responsibilities were code, analyze, debug and fix software defects.

    ASP.NET
    C#
    SQL Server
    jQuery