Languages
Java, Python, C, TypeScript, HTML, CSS, XML
/hello.world
$ initializing identity...
> loading curiosity modules
> connecting ai + code + ambition
> ready.
CS @ Princeton · SDE intern @ Amazon · co-founder @ Friday
I turn nothing
into something.
01THE SHORT VERSION
I'm fascinated by the gap between an idea and the thing it becomes.
I'm Maribel Crespo, a Princeton computer science student, software engineer, and co-founder who likes working in the space between technical possibility and human usefulness.
I've built internal tools at Amazon, campus platforms at Princeton, and early products that turn messy workflows into something clearer. I'm especially interested in AI, data, and the systems that help people move with more confidence.
get to know me
02SELECTED WORK
Ideas with
some momentum.
A few products, platforms, and experiments that show how I think, build, and move from blank page to working proof.
03THE TOOLKIT
Tools are just
thought made tangible.
Frontend
React, React Native, FastAPI, Gradle
Cloud + data
AWS, Lambda, API Gateway, DynamoDB, PostgreSQL, Redis, PGVector
AI + developer tools
Claude, OpenAI API, Cursor AI, Google ADK, Google A2A, Docker, Git
$whoamibuilder // learner // founder-in-progress
04THE DIRECTION
Still becoming.
Already building.
2027
Princeton B.S.E.
Computer Science at Princeton University, with a focus on machine learning, systems, data, and the business of technology.
2026
Amazon · Fernet
Software Development Engineer Intern working across C, Java, TypeScript, and React to migrate a high-volume system serving roughly 12.5M requests per day.
2025
Amazon · Unified Library Index
Built a full-stack internal platform for recommendation strategy testing, reducing onboarding and experimentation time by an estimated 60–70%.
05THE OPEN DOOR
Have a good problem?
Let's make it real.
I'm always interested in thoughtful teams, ambitious ideas, and conversations that start with “what if?”