Johnny Hsieh

Johnny Hsieh

High School Student | Programmer | Web Developer | Bilingual (Chinese/English)

About Me

I am a motivated high school student passionate about programming and web development, with hands-on experience in building websites and a strong foundation in frontend development, Python, and C++. I aim to further develop my skills and contribute to innovative projects. As the winner of the Congressional App Challenge 24-25, I led the creation of Lockedin, an app featuring a chatbot and grade trend analyzer, showcasing my ability to develop practical and impactful solutions. Being bilingual in Chinese and English, I bring a multicultural perspective to my work and can effectively communicate with diverse teams.

Congressional App Challenge Winner
Web Development Intern
Web Developer
High School Junior
Bilingual (Chinese/English)

Skills

HTML5
CSS3
JavaScript
React
Node.js
Python
C++
Next.js
Tailwind CSS

Education

Diamond Bar High School

High School Diploma (Expected 2026)

  • President of Hackathon Club
  • Web Developer at Play Maker
  • Web Developer at Silver Tech

Experience

DB Hackathon Club

Diamond Bar High School - President/Founder

July 2024 - May 2026

  • Organized school's largest Hackathon with over 200 participants
  • Contributed to the design and development of the club website
  • Led workshops on various technologies including Python, JavaScript, and React
  • Utilized bilingual skills to engage with a diverse group of participants and sponsors
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WPrime Sports

WPrime Sports - Web Development Head Intern

Oct 2024 - Present

  • Designed and developed the company's responsive website using React and Next.js
  • Implemented SEO best practices, improving site visibility by 40%
  • Collaborated with the marketing team to create an intuitive user interface
  • Led a team of four web engineers during my internship, managing project milestones and ensuring timely delivery
  • Optimized website performance, reducing load time by 30%
  • Assisted in creating bilingual content for the website, expanding the company's reach
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Silver Tech

Silver Tech - Web Developer

Jan 2025 - Present

  • Built and deployed a responsive website for a non-profit organization using React and Next.js, enhancing its digital presence.
  • Integrated SEO strategies that boosted search rankings and increased visitor traffic.
  • Worked closely with non-profit leaders to design a user-friendly interface tailored to their audience.
  • Managed a team of volunteer developers, delegating tasks and overseeing progress to meet deadlines.
  • Optimized backend and frontend performance, significantly reducing page load times.
  • Developed bilingual content to make the website accessible to a broader community and improve engagement.
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Play Maker

Play Maker - Web Developer

Jan 2025 - Present

  • Designed and developed a fully responsive website for a non-profit organization using React and Next.js.
  • Implemented SEO best practices, increasing online visibility and engagement.
  • Collaborated with stakeholders to create an intuitive and accessible user experience.
  • Led a team of volunteer developers, ensuring project milestones were met efficiently.
  • Optimized website performance, reducing load time and improving responsiveness.
  • Assisted in creating multilingual content, expanding the organization's outreach.
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Mind 4 Youth Diamond Bar Chapter

Mind 4 Youth Diamond Bar Chapter - Founder & President

Dec 2024 - Present

  • President of Mind4Youth, a mental health organization dedicated to awareness and support.
  • Organized TED-style talks and awareness campaigns, featuring experts to educate and inspire communities.
  • Led and managed volunteers, coordinating initiatives to maximize outreach and engagement.
  • Oversaw sharing initiatives, expanding mental health resources and accessibility to diverse communities.
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A+ Youth Tutors

A+ Youth Tutors - Regional Leader

Jan 2025 - Present

  • Led a team of 15 tutors, providing guidance and support
  • Developed a scheduling system that increased tutor efficiency by 25%
  • Tutored over 50 students in Computer Science and Math
  • Implemented a feedback system, improving overall student satisfaction by 35%
  • Conducted bilingual tutoring sessions, catering to both English and Chinese-speaking students
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Sunflower Youth Foundation

Sunflower Youth Foundation - Cultural Exchange Officer

Jun 2024 - Present

  • Organized cultural exchange events for over 50 international students
  • Developed and maintained the foundation's website
  • Created a language exchange program, pairing native speakers with learners
  • Increased participation in foundation events by 50% through targeted outreach
  • Facilitated communication between Chinese and English-speaking participants
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Projects

Lockedin

Winner of Congressional App Challenge 24-25. An app featuring a AI chatbot and grade trend analyzer with bilingual support.

ReactPythonLlama APIData VisualizationMongoDBExpress.jsNode.js

DB Hackathon Club Website

Designed and developed the website for the school's Hackathon club, featuring event registration and resource sharing.

ReactVite.jsTailwind CSS

WPrime Sports Website

Developed the company website during internship, improving online presence and implementing e-commerce features.

ReactVite.jsTailwind CSS

EmployHub

Created an interactive platform to help school's guidance department so students can easily search job postings and employers can easily submit them.

React.jsVite.jsFlaskPythonSQL

Silver Tech

Developed a website for a non-profit organization dedicated to helping elderly individuals navigate technology with confidence.

React.jsNext.jsTypeScriptTailwind CSS

Play Maker

Created a website for a nonprofit organization focused on empowering elderly individuals to use technology with confidence.

React.jsNext.jsTypeScriptTailwind CSS

Weather App

Developed a weather application utilizing APIs to provide real-time forecasts and interactive user features.

React.jsVite.jsTailwind CSSAPI Integration

The Grind Guide

Developed a website for a individuals to orginaize their daily tasks and goals.

React.jsNext.jsTypeScriptTailwind CSS

Achievements

Congressional App Challenge Winner 24-25

Led the development of Lockedin, an innovative bilingual app featuring a chatbot and grade trend analyzer, recognized at the national level.

Hackathon Organizer

Successfully organized and led the largest hackathon in school history, with over 35 participants and utilized bilingual skills to engage a diverse group of participants.

Contact Me

Feel free to reach out for collaborations or just a friendly hello. I'm fluent in both English and Chinese!