Lean Tree
Amsterdam
Senior Consultant
Sep 2024 - Present
Juan Carlos Aravena Esparza
Software Engineer
Summary
Software Engineer specializing in frontend development with a focus on accessibility and performance. Full-stack experience building high-traffic applications at scale. Agile practitioner with a team-oriented approach to problem-solving.
Skills
Frontend
JavaScript/TypeScript, React, Next.js, HTML/CSS, Tailwind
Backend
Java, Python, Node.js
Infrastructure
GCP, Docker, Linux/Unix
Testing
Automated Testing, Component Testing, E2E Testing
Familiar
React Native, Rust, Spring, GraphQL, Django, Flask, C/C++, PHP
Experience
Thoughtworks
Amsterdam
Senior Software Engineer
Jul 2023 - Sep 2024
- Led Web Frontend development for a fashion industry client
- Migrated Design System library from Web Components to React
- Improved client-side performance by 20% and server-side speed by 10%
- Established testing strategy that reduced UI errors significantly
Platzi
Remote (Chile)
Senior Frontend Developer
Oct 2021 - Sep 2022
- Member of the B2B team, building landing pages and business dashboards
- Helped resolve performance issues across the platform
- Contributed to the Engineering Framework for the Platform Team
Evernote
Chile
Software Engineer II
Jan 2021 - May 2021
- Built Tasks feature using React Native and GraphQL
- Feature launched as private beta, now generally available
Thoughtworks
Chile
Consultant Developer
Feb 2017 - Nov 2020
- Full-stack developer in agile teams for international enterprises using Java/Spring and React
- Co-led React development for payment platform serving 20 countries, driving revenue growth
- Led migration from Softlayer Cloud to Google Cloud while refactoring for PCI compliance
- Frontend specialist optimizing performance for multinational retail client
Education
Universidad de Concepción
Concepción, Chile
Ingeniería Civil Informática
Mar 2012 - Jul 2019
Studied Informatics Engineering for 5 years. Strong foundation in Computer Science.