Miguel Josué Cruz Escalante
Mexico City
Summary
Dynamic Front-End Engineer with a proven track record at LiveFree, where I designed a signal-based state layer in React, significantly reducing unnecessary renders. Skilled in Agile methodologies and unit testing, I excel in optimizing performance and mentoring teams, driving impactful results in web development projects.
Overview
4
4
years of professional experience
Work History
Front-End Engineer
LiveFree
01.2024 - Current
- Designed a signal-based state layer in React, eliminating 70 % unnecessary renders.
- Integrated Jest + RTL; raised coverage from 42 % to 78 % and cut bug reports by 30 %.
- Collaborate daily with US product owners in English.
React Consultant
Freelance
02.2022 - Current
- Delivered eight production SPAs (fintech, e-commerce, events) achieving <1 s LCP.
- Automated CI/CD with GitHub Actions, moving releases from weekly to daily.
- Mentored junior developers on Git workflows and Agile ceremonies.
Front-End Developer
DotNET Desarrollo de Sistemas
11.2022 - 11.2023
- Migrated Angular modules to React 18, boosting Lighthouse performance from 62 to 91.
- Introduced Git flow and reduced onboarding time for new hires by 50 %.
Education
B.S. - Software Engineering
Saint Petersburg State Polytechnic University
01.2017
Skills
- Software development
- React framework
- Agile methodologies
- Continuous integration
- Code review
- Test automation
- JavaScript programming
- ReactJS knowledge
- UI and UX design principles
- JavaScript proficiency
- HTML5 expertise
Personal Information
Title: Front-End Engineer
Languages
English C1
Key Wins
- 2025, Real-time dashboard (50k events/day), React, Redux, WebSockets, -40% time-to-interactive; user rating 4.8/5
- 2024, CompressionWizard.net - client-side file compression tool, React, Node.js, WebAssembly, Achieved average 70% size reduction with LZ77; featured on Product Hunt top 10
- 2024, CSS refactor to Tailwind, PostCSS, Tailwind, -60% stylesheet size
- 2023, E-commerce SPA revamp, Next.js, Stripe, +22% checkout conversion
Profile Snapshot
6, Cut initial load time by 40% and render time by 35% across three production apps (2024-25)., Led UI migrations for two enterprise codebases (400k+ active users) while mentoring four developers.
Languages
Spanish
First Language
English
Advanced (C1)
C1
Russian
Intermediate (B1)
B1
Timeline
Front-End Engineer
LiveFree
01.2024 - Current
Front-End Developer
DotNET Desarrollo de Sistemas
11.2022 - 11.2023
React Consultant
Freelance
02.2022 - Current
B.S. - Software Engineering
Saint Petersburg State Polytechnic University
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