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Jonathan Contreras

Full-Stack Developer building AI-powered tools and web products that solve real problems for real people.

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Houston, TX

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© 2026 Jonathan Contreras. All rights reserved.

About Me

Get to know more about my journey, skills, and what drives my passion for technology.

My Story

Before I ever touched code, I was the kid at the keyboard late at night teaching myself songs by ear — no formal lessons, just me pulling apart chords until I understood them. By senior year, music was the plan. Then I hit the audition wall: every program wanted classical training I didn't have. The path I'd imagined wasn't going to look the way I'd imagined it.

Somewhere in that same season I ended up in AP Computer Science Principles — a friend mentioned it, or maybe my counselor; I genuinely can't remember. The project that stuck: we built a hand-gesture controller for the Google dinosaur game. No keyboard, just a webcam and code I'd written connecting a camera feed to a game response. That was the first time I understood that programming wasn't textbook problem-solving — it was building things that actually did things. I didn't walk out thinking this is my calling. I walked out thinking what else can I make?

That self-taught instinct — hear something interesting, pull it apart, figure out how it works — turned out to translate directly into how I write code. I see patterns in systems the same way I used to hear them in music. I still play piano every week and serve as music director at church. I didn't leave that behind. I just found a second instrument.

Technical Skills

• JavaScript/TypeScript
• React & Next.js
• Python
• PostgreSQL
• AWS & Docker
• Git & CI/CD
• Computer Network & Security
• Data Structures & Algorithms

My Journey

2026

Private Tutor - Computer Science & Programming

Self-employed

Feb. 2025 - Present

Providing one-on-one tutoring in AP Computer Science A and AP Computer Science Principles, guiding students through programming concepts, algorithms, and problem-solving strategies. Helping learners strengthen coding skills, prepare for exams, and build confidence in applying computer science knowledge.

Teaching Assistant

Harmony Public Schools

Aug. 2022 - Present

Supporting middle school students in exploring foundational computer science and technology concepts through hands-on instruction and classroom assistance. Working alongside teachers to reinforce lesson material, encourage curiosity in STEM, and help students build problem-solving skills from the ground up — bridging the gap between curriculum and real understanding.

Computer Science Teaching Assistant

Houston Christian University

Aug. 2023 - May 2026

Supported instruction across upper-division CS courses including Operating Systems, Advanced Data Structures & Algorithms, Computer Networks, Software Engineering, and more. Held weekly office hours mentoring 25+ students on complex topics such as thread management, deadlock resolution, TCP/IP stack behavior, and OOP design principles. Collaborated with faculty to refine assignment rubrics and course materials, contributing to curriculum consistency and ABET accreditation standards.

Bachelor of Science in Computer Science

Houston Christian University

Aug. 2022 - May 2026

Graduated Cum Laude with a 3.67 GPA. Completed upper-division coursework in Operating Systems, Computer Networks, Advanced Data Structures & Algorithms, and Software Engineering. Served as a Teaching Assistant across four courses and spearheaded Raspberry Pi integration into the Computer Architecture lab curriculum.

2025

Research Analyst Intern — Full-Stack Component

Crime Stoppers of Houston, Glenda Gordy Research Center

May 2025 - Aug. 2025

Built and launched the public At-A-Glance Statistics webpage, transforming crime data into a responsive and accessible UI. Designed secure API routes and a hybrid data-ingestion pipeline to fetch, aggregate, and cache data from internal systems and vetted public feeds, enabling low-latency updates while safeguarding sensitive information.

Undergraduate Data Science Researcher

The Data Mine - Purdue University

Aug. 2024 - May 2025

Developed Python-based data cleaning and visualization tools that enhanced the Houston Fire Department's response-time analysis. Leveraged these insights to design data-driven strategies that optimized resource allocation and improved emergency response efficiency.

2024

Intern Developer

Bible Study Fellowship

May. 2024 - Sept. 2024

As an Intern Developer at Bible Study Fellowship, I helped restructure the organization's website by migrating it to WordPress and implementing open-source solutions to improve usability, scalability, and cost-effectiveness. I collaborated with the team to design a robust web architecture, troubleshoot hosting and integration issues, and modernize the site's infrastructure to better serve its audience and goals.

Undergraduate Data Science Researcher

The Data Mine - Purdue University

Aug. 2023 - May 2024

Collaborated with V2X to develop an AI-driven chatbot powered by a Large Language Model (LLM) to answer aviation-related questions using specialized documentation. Trained and fine-tuned the model with NLP techniques, applying R, SQL, and Python to enhance data analysis and processing. Gained hands-on experience in AI development, machine learning, and chatbot integration.

Faith & Values

My faith is the foundation of who I am and guides my approach to work and life.

Verse of the Day

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