Administrative Staff

Jason Straughan

Jason is the Co-Founder of Grok Interactive and Codeup. He now serves as the CEO of Codeup. A life-long programmer, he fell in love with computers in elementary school and has been hooked ever since.

Michael's Dad

Jason is a proud husband and father, often found playing Lego or Minecraft with his son, "Master Builder" Michael. A mad scientist at heart, Jason loves tinkering with Arduino, Raspberry Pi, and anything that he can get to run a line of code.

Phillip Hernandez

Before joining Codeup in 2016, Phillip spent 5 years at Rackspace managing projects and accounts in Support, analyzing and improving business processes in Product, and supporting Sales and Marketing in the Executive Briefing Center. At Codeup, Phillip serves as our Vice President of Operations, and helps keep Codeup fun, efficient, and effective!

Darth Phil

Here’s the thing: Phillip brings his best every day, and he makes sure you know it. He is an avid BBQ pitmaster, loving father and husband, and proud San Antonian. His favorite life experience, including the birth of his daughters, was chanting the Fear of the Dark at Iron Maiden’s 2017 World Tour.

Yumi Jeon

Born and raised in Orange County, CA, Yumi travelled to Texas to attend Trinity University. After graduating from Trinity, she joined the Codeup team to put what she learned in action. Now she has become a marketing unicorn that handles all of Codeup's marketing strategy.

Lady Yumicorn

Born and raised in Orange County, Yumi “The Yumicorn” is a Californian at heart, moonlighting as a Texan. Outside of the office, she enjoys hanging with her bunny and cat and going to music festivals. Yumi's ultimate dream is to own a monster truck and pet panda.

Dimitri Antoniou

Dimitri graduated from the University of Pennsylvania with a BA in Urban Studies, and came to Codeup as a 2016 Venture for America Fellow. At Codeup, he serves as our Director of Development, developing program opportunites. He hopes to start his own company someday!

El Norteño

Don’t let the fancy socks and chinos fool you. This Bostonian would much rather be wearing a plain white t-shirt and jorts. When not helping prospective students, Dimitri plays office DJ, complete with tracks from musicals, classic jazz albums, and cheesy post-funk jam bands. Sometimes he even sings along. A grandpa at heart, Dimitri spends his free time cooking, playing board games, and whittling.

Mario Cardona

Mario recently joined Codeup as an Admissions Manager after spending seven years in the banking industry where he worked as a commercial lender. Mario is an alum of Texas A&M University - Kingsville where he earned a BS in Animal Science and attended the MBA program at Our Lady of the Lake. At Codeup, Mario will manage the admissions process and ensure that new students are set up for success in the program.


When not assisting students at Codeup, Mario can usually be found out in the wild visiting parks like Big Bend and Havasupai, paddle boarding and kayaking, touring local breweries in search of the perfect craft beer, and taking impromptu road trips to Marfa and other great Texas destinations. He’s also laid plenty of miles on Texas roads as an avid cyclist and runner.

Stephen Salas

Stephen is a San Antonio native and Texas A&M alum, with an IT background in sales, partner management, and operational experience. Stephen previously worked at Rackspace for 9 years, bringing his wide net of networking skills and connections to Codeup's employer relations and student career development.

Need We Say More?

Rachel Dodell

Rachel joined the Codeup team as a 2018 Venture for America Fellow. As our Finance & Compliance Manager, she keeps our day-to-day operations neat and tidy. Rachel is an alumna of Wellesley College, where she received a B.A. in Media Arts and Sciences. She's excited to be a part of a team that combines her favorite things: technology and social impact.

Leslie Knope

Rachel is a born-and-raised Arizonan excited to be back in the sunny Southwest (although she wishes there were more cacti in Texas). Outside of the office, you can find her listening to a podcast, dabbling in a craft project, or talking about Parks & Recreation. In addition, Rachel directs Coding it Forward, a nonprofit that empowers technical students to pursue social impact careers.

Kyra Seegmiller

Kyra combines her love of creativity and digital analytics as Codeup’s Marketing Manager. Prior to joining the team, she previously worked in Strategic Planning for the Federal Government. An alumnus from The George Washington University with a MA in International Affairs and The University of Texas at Austin with a BA in International Relations, she loves giving a fresh perspective to how the digital world is constantly changing.

Phase 1

When she’s not making the Codeup staff and students laugh with her bad jokes, Kyra can be found utilizing one of her many random skills - speaking four languages, singing opera, or playing Pokémon Go. In addition, she’s a newlywed wife to a doctor in training, and constantly wishes she was a koala.

Sarah Mellor

Sarah joined the Codeup team as a Venture for America Fellow. Prior to being part of the Admissions team, Sarah worked in fundraising and development at education-focused nonprofits in Washington, DC and Boulder, Colorado. She's originally from northern Virginia and graduated from Wake Forest University.

Sarah Mellor

When not at work, you'll most likely find Sarah enjoying her favorite things about San Antonio: sunshine and tacos. Her hobby is food - eating it, talking about it, cooking it. She also enjoys being outdoors, whether that's going for lunchtime walks, hiking, camping, or any others forms of being active.


Ryan Orsinger

Ryan is a senior instructor at Codeup and has worked in IT and development since 2007. He comes to Codeup from a background working on small to enterprise sized applications for the web. With development, Ryan is passionate about building software that creates utility and delights users. With instruction, Ryan's goal is to instruct students "how to learn programming" as much as "how to program".

Parade Gopher

Ryan is a Trinity University graduate and San Antonio native who is into local music, cultural arts, and charity involvement. Since 2007, Ryan has volunteered for the King William Fair as the "Parade Gopher" and is recognized by Rotary International as a Paul Harris Fellow.

Fernando Mendoza

Fernando is a native of Uruapan, Michoacán, Mexico. He graduated from University with a BS in Computer Systems Engineering. Before joining Codeup, Fernando worked as a Senior Web Developer at He values teaching because of its rewards of constant learning from his students and colleagues. Fernando specializes in PHP and Java.

El Fer

Fernando doesn’t have birthdays. Instead, he levels up. His sense of humor is his superpower. He really enjoys traveling around the globe and live music. He loves creating software solutions to help to solve people’s technical problems. His biggest dream is to swim in a pool full of Mexican Pozole.

Zach Gulde

Zach is a curriculum developer and instructor at Codeup. He has a background in computer science and furthered his knowledge in web development by working as a freelance web developer and building business critical infrastructure and automation systems for Codeup.

The Curriculum Guy

Zach is a lifelong computer tinkerer. Zach enjoys using code to solve puzzles, automating things with software, and playing with shiny new technologies. He also enjoys spending time with (in no particular order) his family and his guitar.

Justin Reich

Justin is a web developer and Codeup instructor. An experienced educator, prior to Codeup, Justin taught piano performance for eight years in San Antonio. In addition to learning new web technologies, Justin enjoys helping people overcome challenges encountered in the learning process.

Mr. Music

A native Texan, outside of development and teaching, Justin is a dedicated husband and stepfather, avid gamer, and music-making hobbyist. A self-professed nerd culture and food enthusiast, Justin's love for Star Wars is only matched by his voracious hunger for spicy food.

Daniel Fryar

Daniel has been a professional software engineer for more than 15 years, working for big companies like IBM and USAA and smaller companies you've probably never heard of. He started learning how to program in third grade and has kept on learning ever since. He has a BS in Computer Science from ACU and several years experience with classroom instruction. He loves teaching coding because it is a different way of thinking. He agrees with Yeats' quote, "Education is not the filling of a pail, but the lighting of a fire."

Daniel Fire

Daniel hasn't always been this way. But now he has 5 teenagers. Daniel is now a little crazy.

Maggie Giust

A Texas native, Maggie is a local Trinity Alum and proud mom. Before Codeup, she worked as a Data Scientist at H-E-B, Rackspace, and Capital Group. On the side, she also works as an adjunct instructor at Trinity University. She now directs curriculum development and instruction for our Data Science program, bringing together her love of teaching and data.

pd.isnull(name) == True

Making decisions without data is tough for Maggie, which is why she doesn't have an alter ego name, or a tattoo. She does have two daughters with names, Madeline and Gwendolyn, and a wife named Steph. Give her an 'impossible' challenge, and she will prove it possible. Give her a notebook and she will fill it with formulas using a No. 2 pencil.