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WORK EXPERIENCE

Personal Projects

Walnut Creek, CA

Website: github.com/hiretimsf

Android Developer

Employment Type: Self-employed

Employment Period: October 2025 — Present

Employment Duration: 2 months

Built the Mongolian Sign Language (MSL) Dictionary app to make learning sign language easy and accessible for everyone. It features interactive lessons and a clean, modern design powered by Jetpack Compose, Hilt, Coroutines, Flow, Room, Ktor, and Material 3.
Earned 100+ GitHub stars and 100+ Play Store downloads.

Android Development
Jetpack Compose
Navigation 3
DataStore
Kotlin Coroutines
Kotlin Flow
Ktor
Retrofit
OkHttp
Dagger Hilt
Hilt
Room DB
Material Design 3

Sign Language (Kotlin)October 2025 - Present

Learn Mongolian sign language with interactive lessons.

Personal Projects

Hayward, CA

Website: github.com/hiretimsf

Frontend Developer

Employment Type: Self-employed

Employment Period: January 2025 — October 2025

Employment Duration: 10 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, TypeScript, Tailwind CSS, Shadcn UI, TanStack Query, Zustand, Nuqs, FumaDocs, Supabase, Drizzle ORM, and Framer Motion.

Features advanced SEO, built-in live search, a mobile-first design, and a blog with MDX support powered by FumaDocs.
Fully based on Shadcn UI components for a modern, clean UI.
Featured on WeAreDevelopers (March 2025)

Next.js
TypeScript
Tailwind CSS
Shadcn Ui
Supabase
Drizzle
Shadcn
Zustand
FumaDocs
Nuqs
Framer Motion

Full-Stack Blog AppJune 2024 - Present

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

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 v2January 2025 - June 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.

Portfolio Website v1January 2025 - June 2025

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

Tesla

Tesla Factory, Fremont, CA

Website: www.tesla.com

Production Associate

Employment Type: Full-time

Employment Period: October 2020 — January 2025

Employment Duration: 4 years 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.
Delivered parts to the Model 3 Body-in-White production line using a forklift.

Forklift
Model S
Model X
Model 3
Model Y
Body-in-White
Functional Testing
Drive Tests
Assembly
Installation
Parts Delivery
Forklift Operation
Vehicle Testing
Vehicle Performance Testing
Vehicle Quality Control

Personal Projects

Hayward, CA

Website: www.github.com/hiretimsf

Android Developer

Employment Type: Self-employed

Employment Period: April 2017 — July 2020

Employment Duration: 3 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 (MVVM, Navigation, LiveData/DataBinding, Material Design, Coroutines, Retrofit, Room, Koin) with improved data flow and image handling.
Portfolio App (Java): Developed the initial version in Java and XML using MVC architecture with the Android SDK and Retrofit for API integration.

Java
XML
Kotlin
MVC
MVVM
Jetpack Components
Google Material Design
Navigation
Room DB
Retrofit
OkHttp
Koin
ViewModel
LiveData
DataBinding
Leak Canary
Unit Testing
Shape Shifter
SVG Animation
Firebase
Dark Theme

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)April 2017 - July 2020

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

Portfolio Website v0January 2023 - June 2023

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

MorningStar Senior Living

Hayward, CA

Website: www.morningstarseniorliving.com

Server

Employment Type: Full-time

Employment Period: October 2019 — January 2020

Employment Duration: 4 months

Served meals and drinks to residents.
Kept dining room clean and organized.

Meal Service
Customer Service
Communication
Teamwork

Uber, Lyft, Doordash, Amazon, UPS

San Francisco Bay Area, CA

Website: www.uber.com

Driver & Warehouse Associate

Employment Type: Part-time

Employment Period: April 2017 — July 2019

Employment Duration: 2 years 4 months

Rideshare and delivery driver (Uber, Lyft, DoorDash)
Part-time roles at UPS and Amazon warehouses

Customer Service
Time Management
Multi-tasking
Communication

Renewable Energy Project

Ulaanbaatar, Mongolia

Website: www.eghpp.mn

Frontend Developer

Employment Type: Full-time

Employment Period: November 2013 — February 2016

Employment Duration: 2 years 4 months

Designed and developed a responsive project website using HTML, CSS, and JavaScript.
Created digital marketing materials, improving project visibility and engagement.

HTML
Cascading Style Sheets (CSS)
JavaScript
jQuery
Adobe Photoshop
After Effects
Adobe Illustrator

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.

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.

Personal Projects

Ulaanbaatar, Mongolia

Website: github.com/hiretimsf

Android Developer

Employment Type: Self-employed

Employment Period: September 2012 — November 2013

Employment Duration: 1 year 3 months

Developed and launched two Android applications, including 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, blending modern aesthetics with cultural inspiration.

Java
XML
Android SDK
Eclipse IDE
Android SDK Plugin

T-shirt Design AppSeptember 2012 - November 2013

Developed a custom T-shirt design app featuring exclusive collections by renowned Mongolian designer @ido.dsnr, blending modern aesthetics with cultural inspiration.

Local Marketplace AppSeptember 2012 - November 2013

A local marketplace app for buying and selling items in your neighborhood.

Unitel Group

Ulaanbaatar, Mongolia

Website: www.unitel.mn

Marketing Associate

Employment Type: Full-time

Employment Period: November 2009 — August 2012

Employment Duration: 2 years 10 months

Launched BlackBerry services in Mongolia, selling over 6,000 devices.
Developed a product landing page with HTML & CSS that boosted user engagement by 10%.

HTML
Cascading Style Sheets (CSS)
JavaScript
Photo Impact

Mercedes-Benz AG

Stuttgart, Germany

Website: www.mercedes-benz.com

Intern

Employment Type: Full-time

Employment Period: March 2007 — August 2007

Employment Duration: 6 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