AI Trainer
Jul. 2026 – Present
Handshake · Remote
Evaluated multimodal AI tasks and wrote precise prompts and rubrics to produce reliable training data, surfacing temporal reasoning, grounding, and hallucination failures.
Justin Gutierrez
About Me
Hey there! I'm a 20-year-old student at San Jose State University studying Computer Science and progressing toward a career in Software Engineering. I've dived into a plethora of projects and roles, including machine learning, RAG, backend development, and AI/LLM evaluations. Ultimately, I hope to create or work on a product that makes a real difference for those in need. Check out some of my past experiences and projects below.
When I'm not building apps or grinding LeetCode, you can find me out in nature. "Touching grass" is one of my favorite activities—whether that means a beautiful hike through Yosemite or an intense night of pickleball, I'm always looking for opportunities to have fun and explore new places. You can also catch me at the movie theater or more recently reading new books. I firmly believe that great stories and modern cinema hold valuable life lessons that broaden our everyday perspectives and bring peace of mind. If you're curious, I've included a few of my favorite books, past and future hikes, and movies I've enjoyed below!
Experiences
Professional Experience
AI Engineer
Jul. 2026 – Present
DataAnnotation · Remote
Audited AI-generated code and agent workflows, then ran adversarial evaluations—including a MySQL incident simulation and sycophancy grading that drove a model score to 62%.
Web Developer
Jul. 2025 – Aug. 2025
Freelance · Sacramento
Built a photography booking app with an admin dashboard, secure authentication, and REST APIs for scheduling and client management.
San Jose State University · San Jose, CA
Built a Python healthcare classification pipeline and benchmarked four models to 80.52% accuracy with documented, reproducible experiments.
Leadership & Activities
College Corps Fellow
Jun. 2025 – May 2026
San Jose State University · San Jose, CA
Taught programming to 100+ K–6 students twice weekly and maintained a 450+ hour service commitment with reusable lesson documentation for future cohorts.
Projects
A browser-based validation tool that helps car owners catch bad CSV datalogs before sending them to tuners, with rule scoring, charts, gauge replay, and reports.
Tools & Technologies: Next.js 16, TypeScript, Tailwind CSS, PapaParse, Recharts, Vitest
A Python CLI that turns Gmail internship emails into Excel trackers with company, role, pay, and status using local Ollama classification and incremental refresh.
Tools & Technologies: Python, Gmail API, Ollama, SQLite, Pandas, Excel
A local-first RAG document assistant with a multi-stage retrieval pipeline, citation tracking, and grounded responses backed by Ollama and Cloudflare storage.
Tools & Technologies: Cloudflare Pages Functions, D1, R2, Ollama, JavaScript
A sidecar service and CLI that detects frameworks in a codebase, compresses their docs with an LLM, and serves RAG-ready context via local API, cache, or CLI.
Tools & Technologies: Python, FastAPI, OpenAI, ChromaDB, CLI
A crop risk platform that combines geospatial inputs, agricultural datasets, and ML-driven decision support with a FastAPI backend and Dockerized workflow.
Tools & Technologies: Python, FastAPI, PostgreSQL, Docker, React
Hikes
Completed
Mount Tallac
Lake Tahoe
8.8/10
- Distance
- 10.08 miles
- Elevation Gain
- 3,572 feet
- Time
- 5 hours, 35 minutes
Lassen Peak
Lassen Volcanic National Park
9.5/10
- Distance
- 5.05 miles
- Elevation Gain
- 2,215 feet
- Time
- 2 hours, 42 minutes
Upper Yosemite Falls
Yosemite
9.3/10
- Distance
- 7.12 miles
- Elevation Gain
- 3,141 feet
- Time
- 3 hours, 59 minutes
Quarry Trail
Auburn
8.5/10
- Distance
- 8.84 miles
- Elevation Gain
- 1,044 feet
- Time
- 3 hours, 1 minute
Pioneer Express Trail
Folsom Lake
7.7/10
- Distance
- 5.16 miles
- Elevation Gain
- 602 feet
- Time
- 1 hour, 57 minutes
Totals
- Hikes
- 5
- Distance
- 36.25 miles
- Elevation Gain
- 10,574 feet
- Time
- 17 hours, 14 minutes
Planned
- Clouds Rest at Yosemite
- Mount Rainier
- Mount Shasta
- Secret Cove at Lake Tahoe
- Half Dome
- Mount Tamalpais
- Point Lobos
- Big Sur
- Mt. Hood
- Mt. Dana
Movies
Obsession
Directed by Curry Barker · Inde Navarrette, Michael Johnston
8.2/10
It was a fun watch. I definitely went into this film not expecting the level of horror it had, and I was on my toes for a big portion of it. Despite its moments of creepiness and "Who the hell thought of this script," it's an interesting yet real visualization of weird things happening to ordinary people.
Favorite scene
The Odyssey
Directed by Christopher Nolan · Matt Damon
9.4/10
An amazing film by Christopher Nolan, I did miss the first 10-ish minutes of the film but no matter, I thoroughly enjoyed how powerful the story was told. One of my favorite scenes and director choices was the silencing of the audio when Odysseus crossed through the sea of sirens in which he, by sheer will, strapped himself to the ship and forced himself to go through the emotion, pain, and power of the siren songs. What was beautiful about this is the fact that the audio was muted for the audience, but the emotion from Matt Damon was so powerful and well-acted that it was like we could hear what he was going through. Definitely need to rewatch this in IMAX 70mm as it was intended.
Favorite scene
Spider-Man: Brand New Day
Directed by Destin Daniel Cretton · Tom Holland, Zendaya, Sadie Sink, Jacob Batalon
9.1/10
One of my favorite Spiderman movies. It's so well written and focuses on the development of peter and his journey being alone. Many people struggle with being alone or leaving behind something in their past life and this movie does an amazing job at capturing that in the film. The action and comedic portions of this film also don't disappoint. It's a great watch and might even make you tear up a bit for real.
Favorite scene
The Invite
Olivia Wilde, Seth Rogen
9.1/10
An incredible film that is both funny and real. A lot of useful lessons not just on relationships, but on managing your happiness are included in the film. Not to mention the amazing soundtrack and sound placements, making each emotion feel real and you know exactly what's going on not just from what you see but also what you hear. Beautiful ending as well. I LOVED the piano.
Favorite scene
Books
Red Rising
by Pierce Brown
8.8/10
This book sends you through a spiral of character development. While it is incredibly futuristic, it holds many real world truths about capitalism, how we see each other, and class society. One might look at this book and enjoy it from a historical perspective, scientific perspective, or a sci-fi perspective, and still enjoy it to the fullest. Very excited to read the next book in the trilogy.