Leslie Castellanos
Lead Software Engineer (Frontend) at Freshworks
San Francisco, California, United States
Summary
👤
Senior🎓
Top SchoolLeslie Castellanos is a frontend-focused Lead Software Engineer based in San Francisco with 11 years of engineering experience and eight years building product-facing UIs. She has progressed from teaching and bootcamp leadership into hands-on product engineering, shipping frontend work across startups like FireHydrant and Freshworks and building tools that support companies through growth stages at Long-Term Stock Exchange. Leslie blends strong front-end craftsmanship—testing, linting, and close collaboration with design and product—with leadership experience mentoring teams and running projects end-to-end. Her background in education and nonprofit development gives her rare strength in communication, curriculum design, and stakeholder management alongside technical delivery. She’s comfortable leading remote teams and translating complex product needs into polished, testable interfaces.
11 years of coding experience
25 years of employment as a software developer
Full stack web development, Full stack web development at Hackbright AcademySchool for International TrainingGreengates SchoolBA Anthropology, BA Anthropology at Pomona College
Spanish, asl
Github Skills (29)
chromatic10
react-component8
react5
chakra-ui4
distribute4
component-library3
chakra3
gitpod3
github-enterprise3
react-component-library3
storybook3
access-control3
css2
github2
recaptcha2
Programming languages (5)
Github contributions (5)
leskat47/new_garden_planner
Oct 2021 - Dec 2021
Contributions:68 commits, 24 PRs, 83 pushes in 1 month
leskat47/indexracer
Feb 2015 - May 2017
Contributions:82 commits, 62 pushes, 1 branch in 2 years 3 months
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