WORK EXPERIENCE

Tim's headshot

Personal Projects

Walnut Creek, CA
Website
Website
badge 13

Android Developer

badge 13Self-employed
badge 13October 2025 — Present
badge 132 months

Built an open-source Mongolian Sign Language (MSL) Dictionary app using Jetpack Compose, Hilt, Coroutines, Flow, Room, Ktor, and Material 3, featuring interactive lessons, user authentication, bookmarks, and offline access.

Sign Language Dictionary
Sign Language (Kotlin)October 2025 - Present

Learn Mongolian sign language with interactive lessons.

Tim's headshot

Personal Projects

Hayward, CA
Website
Website
badge 13

Frontend Developer

badge 13Self-employed
badge 13January 2025 — October 2025
badge 1310 months

Built an open-source portfolio apps with Next.js, TypeScript, Tailwind CSS, Shadcn UI, TanStack Query, and Framer Motion. Features advanced SEO, built-in live search, a mobile-first design, and a blog with MDX support powered by FumaDocs.

Portfolio Website
Portfolio Website v3October 2025 - Present

Built with Next.js 16 and TailwindCSS. Designed and developed from the ground up, inspired by my own headshot. Features a modern, clean, and responsive design, with a focus on performance and SEO optimization.

Portfolio Website
Portfolio Website v2January 2025 - March 2025

Built with Next.js 15 and TailwindCSS. A modern, fast, fully responsive portfolio website with SEO optimization, MDX blog system, and custom react motion animations.

Tesla Logo

Tesla

Tesla Factory, Fremont, CA
Website
Website
badge 13

Production Associate

badge 13Full-time
badge 13October 2023 — January 2025
badge 131 year 4 months
  • Monitored and performed functional testing for Model S and X vehicles at the end of the production line.
  • Conducted drive tests for Model 3 and Y to ensure vehicle performance and quality.
  • Assembled and installed body-side components for Model S.
  • Recognized for hard work and dedication with Employee Appreciation Awards.
  • Model S
  • Model X
  • Model Y
  • Functional Testing
  • Drive Tests
  • Assembly
  • Installation
  • Vehicle Testing
  • Vehicle Performance Testing
  • Vehicle Quality Control
Tim's headshot

Personal Projects

Hayward, CA
Website
Website
badge 13

Frontend Developer

badge 13Self-employed
badge 13January 2023 — October 2023
badge 138 months

Built an open-source, full-stack blog app using Next.js, TypeScript, Tailwind CSS, and Supabase, featuring an admin panel, WYSIWYG editor, image uploads, login, search, paging, and commenting system.

Built an open-source portfolio apps with Next.js 13, TypeScript, Tailwind CSS, Shadcn UI. Features advanced SEO, a blog with MDX support, and a modern, clean UI.

Blog App
Full-Stack Blog AppJune 2023 - October 2023

A fully responsive full-stack blog app built with Next.js 13, TypeScript, TailwindCSS, and Supabase as backend. Based on Shadcn UI components.

Portfolio Website
Portfolio Website v1January 2023 - June 2023

Built with Next.js 13 and TailwindCSS. This is the first version of my portfolio website.

Tesla Logo

Tesla

Tesla Factory, Fremont, CA
Website
Website
Forklift

Material Handler

badge 13Full-time
badge 13January 2020 — December 2022
badge 132 years 12 months
  • Operated forklifts and delivered parts to the Model 3 Body-in-White production line.
  • Maintained inventory flow and supported the production team with on-time deliveries.
  • Recognized for hard work and dedication with a "Kick-Ass Worker" award.
  • Forklift
  • Model 3
  • Body-in-White
  • Inventory Management
MorningStar Senior Living Logo

MorningStar Senior Living

Hayward, CA
Website
Website
badge 13

Server

badge 13Full-time
badge 13October 2019 — January 2020
badge 134 months
  • Served meals and drinks to residents.
  • Kept dining room clean and organized.
  • Meal Service
  • Customer Service
  • Communication
  • Teamwork
Delivery Services Logo

Uber, Lyft, Doordash

San Francisco Bay Area, CA
Website
Website
badge 13

Driver

badge 13Part-time
badge 13April 2017 — October 2019
badge 132 years 7 months
  • Completed 2,000+ safe rides and deliveries across multiple platforms.
  • Maintained a 5-star customer service rating and excellent communication skills.
  • Customer Service
  • Time Management
  • Multi-tasking
  • Communication
Tim's headshot

Personal Projects

Hayward, CA
Website
Website
badge 13

Android Developer

badge 13Self-employed
badge 13April 2017 — July 2020
badge 133 years 4 months

Developed and published two Android portfolio apps demonstrating modern architecture, testing, and best development practices.

  • Portfolio App (Kotlin): Rebuilt the app in Kotlin using MVVM, Navigation, LiveData, DataBinding, Material Design, Coroutines, Retrofit, Room, and Koin, improving data flow and image handling. Earned 50+ stars on GitHub.

  • Portfolio App (Java): Developed the initial version in Java and XML using MVC architecture with the Android SDK and Retrofit for API integration, earning 10+ stars on GitHub.

  • Portfolio Website:Built the initial version of my portfolio website using HTML, CSS, and JavaScript, with Firebase as the backend.

Portfolio App (Kotlin)
Portfolio App (Kotlin)April 2017 - July 2020

A Kotlin-based portfolio app using Jetpack Components, MVVM, Room, and Coroutines for seamless offline/online syncing.

Portfolio App (Java)
Portfolio App (Java)April 2017 - July 2020

A Java-based Android portfolio app showcasing my development skills, built with standard SDK APIs and MVC architecture.

Portfolio Website v0
Portfolio Website v0April 2017 - June 2020

This is the first version of my portfolio site, built with HTML, CSS, and jQuery.

Renewable Energy Logo

Renewable Energy Project

Ulaanbaatar, Mongolia
Website
Website
badge 13

Frontend Developer

badge 13Full-time
badge 13November 2013 — February 2016
badge 132 years 4 months
  • Designed and developed a responsive project website using HTML, CSS, and JavaScript.
  • Created digital marketing materials, improving project visibility and engagement.
Renewable Energy Project
Renewable Energy ProjectSeptember 2012 - November 2013

Designed and developed from the ground up with HTML, CSS, and JavaScript to highlight the key advantages of a renewable energy initiative.

Renewable Energy Marketing Materials
Project Marketing MaterialsSeptember 2012 - November 2013

Marketing materials and visuals were created in Photoshop, along with videos in After Effects. A lot of effort went into highlighting the project's benefits and making the content engaging.

Tim's headshot

Personal Projects

Ulaanbaatar, Mongolia
Website
Website
badge 13

Android Developer

badge 13Self-employed
badge 13September 2012 — November 2013
badge 131 year 3 months
  • Developed and launched a full-stack, location-based marketplace app for buying and selling items within local neighborhoods, built on the Ushahidi open-source platform using Java, XML, and Eclipse IDE.
  • Created a custom T-shirt design app featuring exclusive collections by Mongolian designer @ido.dsnr, combining modern aesthetics with cultural inspiration.
Local Marketplace App
Local Marketplace AppSeptember 2012 - November 2013

A local marketplace app for buying and selling items in your neighborhood. Built with Java, XML, Eclipse, and the Android SDK plugin.

T-shirt Design App
T-shirt Design AppSeptember 2012 - November 2013

A custom T-shirt design app featuring exclusive collections by Mongolian designer @ido.dsnr.

Unitel Logo

Unitel Group

Ulaanbaatar, Mongolia
Website
Website
badge 13

Marketing Associate

badge 13Full-time
badge 13November 2009 — August 2012
badge 132 years 10 months
  • Launched BlackBerry services in Mongolia, selling over 6,000 devices.
  • Developed a product landing page with HTML & CSS, boosting user engagement by 10%.
Product Landing Page
Product Landing PageNovember 2009 - August 2012

A product landing page built with HTML and CSS that boosted user engagement by 10%.

Daimler Logo

Mercedes-Benz AG

Stuttgart, Germany
Website
Website
badge 13

Intern

badge 13Full-time
badge 13March 2007 — August 2007
badge 136 months
  • Migrated over 100 logistics reports to a new Cognos BI system.
  • Assisted Data Warehouse users by creating custom data reports using SQL.
  • SQL
  • IBM Cognos Analytics
  • Cognos
  • Microsoft Access
  • Visual Basic

EDUCATION

English Language Institute Logo

English Language Institute (ELI)

San Francisco, CA
badge 13

TOEFL Preparation / University Preparation Program

badge 13Full-time
badge 13January 2018 — February 2018
badge 132 months
  • Completed a university-level TOEFL and academic preparation program.
  • Strengthened oral communication, reading, and listening skills, assessed at levels 7.0–8.5.
Berkeley City College Logo

Berkeley City College

Berkeley, CA
badge 13

English as Second Language

badge 13Full-time
badge 13August 2016 — June 2018
badge 131 year 10 months
  • Completed ESL speaking, writing, and grammar courses.
  • Improved academic English skills for college-level study.
  • Earned strong grades across all courses taken.
San Francisco State University Logo

San Francisco State University

San Francisco, CA
badge 13

Intensive Program in English

badge 13Full-time
badge 13June 2016 — August 2016
badge 133 months
  • Completed a 242-hour Intensive English Program.
  • Studied advanced reading, writing, listening, and speaking in a full-time academic setting.
University of Applied Sciences of Mittweida Logo

University of Applied Sciences of Mittweida

Mittweida, Germany
badge 13

Bachelor's Degree, Computer Science

badge 13Full-time
badge 13October 2002 — May 2008
badge 135 years 7 months
  • Earned a Diplom (FH) in Computer Science, evaluated by WES as equivalent to a U.S. Bachelor's degree.
  • Completed a four-year accredited program with 136.5 semester credits and a cumulative GPA of 3.12.
  • Studied key subjects including algorithms, data structures, operating systems, databases, software engineering, computer networks, AI, electronics, and mathematics.
  • Gained hands-on experience through labs, programming projects, and a required internship.
  • Completed and defended a diploma thesis with an A grade.
  • Awarded a Konrad Adenauer Foundation scholarship.
University of Applied Sciences of Mittweida Logo

University of Applied Sciences of Mittweida

Mittweida, Germany
badge 13

German Language Examination (DSH)

badge 13Full-time
badge 13October 2001 — July 2002
badge 1310 months
  • Completed an intensive German language study program.
  • Passed the official German Language Examination (DSH) required for university admission in Germany.