Contract: Senior/Lead Front End Engineer
UpworkMexico City, Mexico City, Mexico
Posted August 26, 2025
Contract / Temporary
About the Company
Upwork is a global marketplace connecting businesses with independent talent across various skills. Our platform serves startups to Fortune 100 companies, offering a trust-driven environment for innovative collaboration. With over 10,000 skill categories including development, design, and customer support, Upwork empowers companies and freelancers to unlock their full potential.
Job Description
Upwork is seeking a Senior/Lead Front End Engineer to design, develop, and maintain scalable and robust web applications. This contract position supports the Hybrid Workforce Solutions team, offering opportunities for growth and collaboration within a global environment. The role involves collaborating with stakeholders, writing code, optimizing performance, and staying updated on new technologies.
Requirements
- 8+ years of professional software development experience
- Deep knowledge of modern JavaScript (ES6+)
- Extensive experience with a modern JS framework (Vue, React, or Angular preferred)
- Flutter experience (major plus)
- Experience with unit testing and end-to-end UI testing
- Basic understanding of accessibility (WCAG guidelines)
- English proficiency (Intermediate level)
- Knowledge of PHP, server-side JavaScript or TypeScript or Node.js
- Basic understanding of system design principles
- Basic understanding of REST
- Experience building / supporting high-load web applications
- Comfortable working with AWS
- Experience with relational databases
- Consistent track record of collaboration
- Desire to learn new technologies
