Mark TellezMark Tellez

My Resume

Skills & Expertise

Achievements

AI Programming Contest Top Performer

Placed 8th out of over 5000 participants in the 'Fantastic Bits' AI programming contest

Exceptional Mentorship Rating

Earned over 500 five-star reviews and maintained a 4.8-star average across 1000+ mentoring sessions at Codementor.io

Education

Cal State San Marcos

BS in Computer Science, Minor in Graphic Design

2003 - 2007

GPA: 3.71

Coursework & Focus Areas:

  • Data Structures and Computing Architecture in C
  • Application programming and inrterface design in Java
  • Web Development using JavaScript and HTML
  • Database Management and Management Systems in SQL

Work Experience

current
2023

VoxBirdAI

2023 - current
Sr. Software Engineer & Voice Synthesis Lead
Austin, TX, USA
  • Led voice synthesis team developing celebrity voice models using deep learning techniques
  • Architected "AI or Not?" testing system with feedback loop using NextJS, ReactJS and PostgreSQL
  • Engineered custom tuning system for ElevenLabs integration using NextJS, ReactJS and MongoDB
  • Developed our chatbot for onboarding using reinforcement learning, Python, AWS, and React, NextJS
  • Implemented site redesign using React best practices (Context API, Custom Hooks) and TailwindCSS
  • Built responsive frontend interfaces with ReactJS, JavaScript and modern web technologies
2022
2019

DevmentorLive

2019 - 2022
Sr. Software Engineer & Founder
San Diego, USA
  • Engineered biogas system and solar-powered AI infrastructure with RTX 4090s
  • Developed medical AI models outperforming published research benchmarks
  • Architected Text-To-Speech model using GANs, Transformers architecture
  • Balanced technical innovation with sustainable rural lifestyle
  • Delivered solutions using ReactJS, TypeScript, NextJS, TailwindCSS, MongoDB
  • Implemented reinforcement learning for game-playing AI agents
  • Maintained strategic mentorship relationships from previous ventures
  • Developed modern web applications using ReactJS, JavaScript, and TypeScript
  • Built responsive user interfaces with ReactJS component architecture
2019
2016

Codementor

2016 - 2019
Sr. Software Engineer & Mentor
Los Angeles, CA
  • Achieved nearly 500 five-star reviews from clients worldwide
  • Mentored thousands of developers in Ruby on Rails, ReactJS, and JavaScript
  • Established reputation for delivering solutions exceeding client expectations
  • Gained expertise in consulting business management and client relations
  • Transitioned to entrepreneurship with DevmentorLive
  • Collaborated with diverse clients across industries and technical backgrounds
  • Specialized in ReactJS, JavaScript, and modern frontend development
  • Built and reviewed client applications using ReactJS component architecture
2020
2016

ReactU YouTube

2016 - 2020
Content Creator & Educator
Remote
  • Built up 33,000 subscribers with $7k monthly revenue
  • Created educational content on JavaScript, ReactJS, NextJS ecosystem
  • Developed effective teaching methodologies through client communication
  • During this timeframe I went deep on machine learning, genetic algos, and reinforcement learning
2016
2015

Uber

2015 - 2016
PostgreSQL Expert (Contract)
Dallas, TX
  • PostgreSQL to MongoDB, MySQL migration at scale
  • Developed database transition pipelines to migrate very large datasets
  • Ensured data integrity during migrations by building a logging system
2016
2013

Callaway Golf

2013 - 2016
Software Engineer
San Diego, USA
  • Engineered MySQL database systems for the e-commerce platform
  • Developed optimized stored procedures to efficiently manage large product catalog
  • Implemented complex SQL queries for inventory management and order processing
  • Architected ASP.NET components for the online store's shopping experience
  • Integrated secure payment processing through merchant account services
  • Developed scalable backend services for product catalog management
  • Introduced to Ruby, LISP by Jim Weirich
  • Pivoted to Ruby on Rails development
  • Developed interactive frontend features using JavaScript and jQuery
  • Built responsive user interfaces for e-commerce platform
2013
2012

GEICO

2012 - 2013
Software Engineer (Contract)
Poway, CA
  • Developed SOAP interfaces for COBOL, DB2 systems
  • Created Ruby automation scripts to make migration code easier
  • Trained my offshore replacement during transition
  • Implemented frontend interfaces using JavaScript and jQuery
  • Developed client-side validation and interactive UI components
2011
2009

Intel

2009 - 2011
Software Engineer
Hillsboro, OR
  • Pioneered sports streaming for NHL, NBA using the .Net platform
  • Stayed late and worked weekends to meet deadlines and skill myself up
  • Learned the importance of teamwork and communication with Stakeholders
  • Developed frontend interfaces using JavaScript and jQuery
  • Built interactive user experiences for sports streaming platform
2009
2007

UpperDeck

2007 - 2009
Jr. Software Engineer
Carlsbad, CA
  • Maintained PostgreSQL systems for Marvel Vs platform
  • Developed complex SQL queries, stored procedures
  • Optimized database performance through indexing
  • Built interactive UI with JavaScript, CSS
  • Implemented drag-and-drop card management framework
  • Implemented interactive UI components with JavaScript and jQuery
  • Developed client-side functionality for card management system

Client Reviews

"Ive known about Mark for a while through his React courses, I reached out to him to help me start architecting an app I am building as a side project. He was awesome! I got answers to alot of the areas of this project that I was unfamiliar with and we planned out a way to get the project going. Really looking forward to continuing to work with him."

Michael Thompson

Michael Thompson

"Mark has a wealth of knowledge and expertise that is hard to find. Perfect mentor in many ways: clear and concise communication, reliable and a great teacher. I highly recommend working with him if you need help."

Jelena Grimshaw

Jelena Grimshaw

"Wow, Mark has really proved himself to be an expert in many ways. Definitely worth the investment and here's why: Pros: He works really fast, gave me some really helpful tips, explained me everything through meaningful examples and even improved some parts of already existing code in a way which makes them more clean and usable. Cons: I only wish the session was longer as I am looking forward to another one :)"

Daniel Star

Daniel Star

"I've used Mark a couple times. He is awesome! I've been using Rails, etc for 7+ years but I still get hung up once in a while...Mark knows his $h!. I won't search for mentors anymore...I'll just use Mark."

Adam Stockland

Adam Stockland

"Mark really knows his code. TDIL why implementing certain react features is preferred, and how certain design decisions are more performant. Mark is an interesting coder and skilled at teaching. I recommend him to anyone."

James Anderson

James Anderson

"I usually have more conceptual questions on Codementor and Mark came in with a good idea of what it was that I was very confused about and was quick to direct me to the concepts that I was missing. We discussed ActiveRecord (pattern, not gem). What to pass in a RESTful API to reduce cognitive load When to use objects and when to use serialized IDs as function parameters."

Stephen Huh

Stephen Huh

"Mark has been helping us daily with my website for about a week now and I would confidently recommend him to any peer looking for someone who is a fast developer, strong communicator and honest worker. "

Jack Bordner

Jack Bordner

"Really great! Mark walked me through a tricky issue I was basing off of legacy code, and came up with a much more intuitive workaround I can jump off from. Both of the issues I posted for help about were solved, and I came away with a decent toolkit to deal with some performance issues in both my code and my computer."

BoucherieDev 💾

BoucherieDev 💾

"Mark is so good at JavaScript and React (and Redux). He immediately knows how to address the task at hand and then starts throwing down code. I really appreciate his positive attitude and the time he takes to walk me through the work."

Ashley

Ashley

"Mark was very helpful in debugging a React/Redux issue. He quickly isolated an issue and that helped uncover some other problems that needed attention. He also helped after the session by providing links and references to other skilled devs."

Sam

Sam

"Mark has helped me several times at this point and is always quick and knowledgeable and writes great code (despite my usual, annoying lack of A/V for my sessions). He's worth the higher price because you know he knows what he's doing! Thanks as always, Mark!"

Ashley

Ashley

"Mark is great. Not only did he solve the problem I had, but before the session began I was having trouble with my screen sharing -- and he actually paused the session and discovered the problem with my computer. Once we fixed my computer, then we started the session and he solved my problem quickly. Moreover, he's a fun guy and I would enjoy his company regardless."

Jackson Holiday Wheeler

Jackson Holiday Wheeler

"Mark understands everything very quickly and tries to make things as easy as possible for me to understand. Also answers questions effectively. Helped me understand how shopify web builder works and started building it using rails."

Masud

Masud

"Mark is a great mentor! He's super knowledgable and as a student I appreciate his ability to explain concepts clearly. I can tell he really cares about my learning and progress. He is fair and makes sure I'm getting value from my sessions. Highly recommended!"

Anonymous

Anonymous

"Mark is very knowledgable mentor and he knows how to solve any kind of technical problem. he is very passionate about React and Rails. If you want to have deep understanding of React and Rails Mark is the mentor for you!!!"

steve chek

steve chek

"Mark was very helpful we been working on a project together and he is very excited and passionate to solve problems and teach. i HIGHLY recommend Mark to anybody who wants to build a project while learning!!!"

steve chek

steve chek

"Mark was extremely helpful. Not only did he take the time to understand the problem before starting the session, he explained what he was doing and why during the session and also paused the session once it became clear that I could move forward on my own. I recommend him 100%."

Nonni

Nonni