Summary
Overview
Work History
Education
Skills
Websites
Publications
Speaking Engagements
Timeline
Generic
Freddy Rangel

Freddy Rangel

Software Engineer
San Jose

Summary

Experienced software engineer with over a decade of professional experience in various domains. Published author and conference speaker.

Overview

10
10
years of professional experience

Work History

Creator & Lead Engineer

Divonic
03.2024 - Current
  • Spearheaded the development of "Divonic," an innovative web app that leverages AI to prepare software engineering candidates for technical interviews.
  • Integrated advanced AI-driven features using Groq with Llama3 and Judge0 to deliver real-time, interactive feedback, including personalized hints, code evaluations, and detailed explanations, enhancing user learning and retention.
  • Designed and implemented core functionalities with Next.js, TypeScript, and Tailwind CSS to create a robust, scalable, and user-friendly interface.
  • Employed iterative coding exercises in ACE Editor, allowing users to master fundamental algorithms and data structures through repetitive practice.
  • Enhanced user engagement by providing context-aware feedback, helping users understand and overcome coding challenges efficiently.

Principal UI Engineer

Palo Alto Networks
02.2019 - Current
  • Led the redesign of the UI architecture to a flexible, component-based approach, enhancing development efficiency and system reliability.
  • Directed all major UI projects, showcasing leadership in driving significant technological advancements and project management.
  • Developed a cloud provisioning product within 6 weeks, a project initially estimated to take 6 months

Senior Software Engineer

Science Exchange
03.2017 - 02.2018
  • Optimized search experience by forming a Marketplace and Discovery Team consisting of key stakeholders from different departments
  • Improved maintainability of front-end by migrating from jQuery & Ember to test-driven React
  • Implemented JavaScript error reporting which identified critical issues for our enterprise clients
  • Improved web accessibility (a11y) by instituting a thorough audit process
  • Advanced engineering standards by compiling an engineering handbook and streamlining on-call processes
  • Conducted team workshops on JavaScript topics.

Senior Front-End Engineer

HelloSign
06.2015 - 03.2017
  • Improved JavaScript runtime performance by a factor of 15
  • Reduced initial load-time from 4.5 seconds to 200 milliseconds
  • Built HelloWorks, the new signature product based on an event-driven architecture using React, Redux, Elixir, and Phoenix channels
  • Gave talks and workshops for developer conferences in the US and overseas.

Software Developer

Velocis
06.2014 - 06.2015
  • Refactored large legacy enterprise systems using TDD and increased test coverage from 0 to 85 percent while adding new features
  • Architected and built backend JSON APIs for web, hybrid, and native applications
  • Built a social networking application (SkyRise) connecting office tenants into online communities
  • Taught other developers how to write and maintain test suites.

Education

Bachelor of Arts - Economics

University of California, Berkeley
04.2001 -

Skills

    React

    TypeScript

    Rust

    Documentation

    Testing

    Software Architecture

    UI/UX Design

Publications

React Under the Hood: A Beginner's Guide (2016)

Speaking Engagements

  • 2018 Async in Redux: ForwardJS (San Francisco)
  • 2017 React 101 Workshop: QCon (London)
  • 2017 APIs for Humans: Hacker Connect (New York)

Timeline

Creator & Lead Engineer

Divonic
03.2024 - Current

Principal UI Engineer

Palo Alto Networks
02.2019 - Current

Senior Software Engineer

Science Exchange
03.2017 - 02.2018

Senior Front-End Engineer

HelloSign
06.2015 - 03.2017

Software Developer

Velocis
06.2014 - 06.2015

Bachelor of Arts - Economics

University of California, Berkeley
04.2001 -

Similar Profiles

CREATE PROFILE
Freddy RangelSoftware Engineer