Johnny Hsieh

AI and full-stack software developer

Johny Hsieh is a Diamond Bar based developer focused on AI-powered education tools, full-stack web apps, and bilingual user experiences. My projects have served 1,000+ students, won the Congressional App Challenge, and helped real organizations ship better digital products.

1,000+

students supported by the FBLA AI study platform

CAC winner

Congressional App Challenge 2024-2025 for Lockedin

Full-stack

React, Flask, Python, SQL, AI APIs, and deployment

About Me

I am a software developer who likes building products that solve visible problems: study platforms for competition students, bilingual education tools, nonprofit websites, and internal systems for school teams. My strongest pattern is taking an idea from user need to shipped product, then improving it with AI, data, and clean full-stack architecture.

AI product builder

Built AI quiz generation, chatbot workflows, prompt-driven study flows, and analytics tools using OpenAI APIs, Llama integrations, Python, and Flask.

Full-stack execution

Comfortable across React, Next.js, Flask, SQL, Firebase, deployment, performance optimization, and API integration.

Leader with users

Founded and led technical clubs and service groups, taught younger students, and built products with real student, nonprofit, and company stakeholders.

Congressional App Challenge Winner
Web Development Intern
Web Developer
AS in Computer Science Expected 2027
Bilingual (Chinese/English)

Skills

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

Education

Diamond Bar High School

High School Diploma, Expected May 2026

  • Honoree of Brahma Tech Academy
  • President and founder of DB Hackathon Club
  • Built leadership experience across software, tutoring, and community organizations.

Experience

FBLA AI Study Platform

Diamond Bar High School - AI Software Developer

Feb 2025 - May 2026

  • Developed and deployed an AI-powered educational platform serving 1,000+ students preparing for FBLA competitions.
  • Engineered quiz generation and personalized study workflows using React, Flask, OpenAI API, and SQL.
  • Designed full-stack application architecture across frontend, backend, database, and deployment workflows.
  • Improved functionality through continuous iteration, performance tuning, and user-focused feature updates.
View Platform

Lockedin

Congressional App Challenge Project - Software Developer

Jun 2024 - Dec 2024

  • Led development of an award-winning bilingual education app with an AI chatbot and academic performance analytics.
  • Built full-stack functionality using React, Python, Llama API integrations, and interactive data visualization.
  • Created grade trend tools that help students understand academic progress and make better study decisions.
  • Won the Congressional App Challenge 2024-2025 for innovation in education technology.
View Code

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
Visit Website

Kode4Kids

Diamond Bar High School - Head Scratch Instructor

Sep 2024 - Present

  • Taught Scratch programming to kids aged 8-13 as part of the Kode4Kids club at school
  • Developed engaging lesson plans and interactive coding activities
  • Helped young students build foundational programming skills in a fun environment
  • Mentored and guided students through their first coding projects
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WPrime Sports

WPrime Sports - Web Development Head Intern

Oct 2024 - Apr 2025

  • Developed and deployed a responsive company website using React and Next.js to improve the customer experience across devices.
  • Implemented SEO and performance improvements that strengthened visibility and reduced load time.
  • Collaborated with marketing stakeholders to shape a clearer user interface and product presentation.
  • Led a team of four web engineers, managing project milestones and delivery quality.
  • Assisted with bilingual content to expand accessibility for English and Chinese-speaking audiences.
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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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LA Metro

Los Angeles County Metropolitan Transportation Authority - Engineering Intern

Jun 2025 - Aug 2025

  • Assisted in the design and layout of railway tracks for new transit projects.
  • Created detailed 3D models of track systems and station infrastructure using engineering software.
  • Collaborated with senior engineers on structural analysis and project planning.
  • Participated in site visits and contributed to technical documentation for ongoing projects.
  • Gained hands-on experience in civil engineering and transportation design.
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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
Visit Website

Projects

Lockedin

Congressional App Challenge winning bilingual education app with an AI chatbot, grade trend analytics, and student-facing progress insights.

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 a platform for the school guidance department where students can search job postings and employers can submit opportunities.

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

Weather App

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

React.jsVite.jsTailwind CSSAPI Integration

DBHS FBLA AI Study Website

Developed an AI-powered study platform for FBLA competitors, including generated quizzes, personalized practice, and full-stack learning workflows for 1,000+ students.

React.jsFlaskPythonTailwind CSSSQL
DBHS FBLA AI Study Website video thumbnail

FBLA Mobile App Competition App

Built a full-stack FBLA chapter mobile app with SwiftUI, Firebase authentication, chapter news, event calendars, Instagram integration, and backend-powered member management.

SwiftUIFirebaseFlaskSQLAlchemySQLite

FBLA Website Coding & Development

Co-developed Campus Relink, a full-stack lost-and-found platform with student sign-in, admin moderation, searchable item listings, and dashboard tools for school-wide use.

ReactViteTailwind CSSFlaskSQLite

Crypto Trading Model

Built a BTC probability and directional trading model with calibration, backtesting, and alerting workflows, with a record of generating over $8K.

PythonFlaskQuant ResearchBacktestingAutomation

Achievements

Congressional App Challenge Winner 24-25

Led Lockedin, a bilingual education app with an AI chatbot and grade trend analyzer, recognized for innovation in student support and educational technology.

Hackathon Organizer

Founded and led DB Hackathon Club, organized the school's largest hackathon, and created workshops that helped students move from interest to working technical projects.

AI Study Platform Impact

Built and deployed an FBLA preparation platform serving 1,000+ students with AI-generated practice, personalized study workflows, and full-stack application architecture.

FBLA State Leadership Conference Website Coding & Development

Placed 4th at the FBLA State Leadership Conference in Website Coding & Development, showcasing strong full-stack development and team collaboration.

FBLA State Leadership Conference Mobile App Development

Placed 3rd at the FBLA State Leadership Conference in Mobile Application Development by building a chapter-focused app with event, news, and member tools.

Contact Me

Looking for a builder who can ship full-stack AI tools, communicate clearly, and lead from idea to launch? I would be glad to talk.