Justin Goodman


This site is mirrored: main, github


I'm Justin, current software engineer and problem solver. My wide range of interests and abilities center around a common theme: creative expression. From web/app development to film editing to music composition, I am passionate about expressing my creativity through media that others may enjoy. When I'm not at my computer or studying, you can find me swimming, biking, running, playing racquetball with my friends, or tutoring classmates in Computer Science.

Interested in collaborating on a project? Email me at jugoodma@umd.edu. Interested in getting to know me first? You can find me on LinkedIn and GitHub. Cheers!

Opinions are my own.



I like open-source software. I also like doing things myself. I also like solving problems that already exist, since I can apply my skills while usually learning new things. One such example -- real-time location tracking and sharing. There exist multiple "solutions":

I say "solutions" because these are just things people are "allowed" to use. Sure, there are other open-source implementations (OpenGTS and Traccar and maybe even gps-logger (OBS plugin)) but those are lame. So, the obvious solution was to build my own scuffed implementation, from scratch, complete with testing suite for maximum stress-testing. Plus, the name for the project is cooler. Check out Lantern here on GitHub. You can also check out the live version running on this site here. Though, you will need to contact me if you want a live demo.


COVID-19 canceled our favorite sport season, so I helped my brother build out a site to host and compare GPS race files. Check it out here.


A simple board game my friend and I created. Check out the project here.


University of Rochester data science Research Experience for Undergraduates. My partner and I created novel Amazon Mechanical Turk interfaces to build three datasets for training computer vision models. See the data manipulation and interface code we wrote here.

Ti-84 Programs

My old Ti-84 calculator programs. I imported the binaries from my calculator, and wrote a python program to translate them to readable TI-BASIC code. Check out the project here. My personal favorite: Cookie Clicker!

Behavioral Economics Android App

This application communicates with FitBit web API and Google Firebase to store and use participants' sleep and activity data. The researchers using this app want to determine if they can use incentives to cause people to sleep more. I taught myself Android application development to complete this project. Check out the project here.

Home Linux Server

I built a Ubuntu server at home over one of my winter breaks. I built it out of an old HP computer (TODO -- insert picture). It became unreliable (the computer was probably over 10 years old), so I migrated everything to a Raspberry Pi 3. I've since migrated the server to an Amazon Lightsail instance. I used to host and manage my brother's WordPress blog (now defunct). I currently host this website, and plan to use the site/server for future dev projects.

DataLeague 2016

This was created in 24 hours for an open data hackathon in which we were tasked to find a use for a list of open data sources. See the project here (although, I don't think it works anymore due to API changes).

Fun Stuff:


I did a slew of projects during my Master's:

I wrote a thesis [UMD archive] during undergrad! You should check it out if you're interested in Twitter advertising. You should also check out the paper I helped publish, of which my thesis extends -- What Twitter Knows: Characterizing Ad Targeting Practices, User Perceptions, and Ad Explanations Through Users' Own Twitter Data.

If you're interested, the *.tex source for some of the documents on this site are available here. On a related note, I wrote a textbook for UMD CMSC250. You can view its progress on my GitHub page.

On yet another related note, I also like teaching. I was an undergrad (and grad) teaching assistant during my years at university. I most frequently taught CMSC250 -- Discrete Structures (Mathematics). Feel free to send me an email to request my official course evaluation reports (performance metrics, and anonymous student feedback). For some teasers, you can read some Reddit comments here (fall 2018) and here (fall 2019).


I'm working on a blog -- posts are written in markdown and statically generated with python. If you lower your expectations, you can check out my writing here.

I like exercise, so I made an interface to view all of my favorite workouts here Current status: need to add more workouts, and a button to select a random workout.

I also like to cook, so I made a (similar) interface to view all of my favorite recipes here. Current status: I have some recipes I want to remember, but have not made an interface yet.

I love the video games Rocket League and Terraria. I've sank more hours into those games than I'd like to admit.


Live streaming: Sometimes I stream on Twitch.

Music production: Here's my SoundCloud account.

Video editing: Here's a 10-minute documentary I edited for my high school history group.

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