Sebastian Ortiz
AI Product Engineer at Casper Studios
San Juan, Philippines
Summary
🤩
Rockstar🎓
Top SchoolSebastian Ortiz is an AI Product Engineer with seven years of experience who blends eight years of JavaScript/TypeScript and Svelte full‑stack development with five years of systems programming in Rust, C, and C++. He ships product features (most recently at Verdn, a YC B Corp) while improving developer tooling and reliability — his open-source work includes performance and type-safety refactors in notable projects such as rust-analyzer, the rust-postgres driver, and mermaid.js, plus targeted optimizations in the valibot validation library. A Summa Cum Laude Computer Science graduate from UP Diliman, he also builds and teaches developer curricula, mentors others, and writes practical technical articles on his DEV blog. Comfortable moving from low-level futures and dependency cleanup to AI-powered product features, he combines hands-on engineering with a focus on maintainability, security (e.g., excluding blocked keys in validators), and frequent shipping. Based in San Juan, Philippines, he contributes regularly to open-source projects that elevate developer ergonomics and code correctness.
7 years of coding experience
2 years of employment as a software developer
Bachelor of Science - BS, Computer Science, Summa Cum Laude, Bachelor of Science - BS, Computer Science, Summa Cum Laude at University of the Philippines Diliman
Github Skills (40)
typescript310
javascript10
postgresql10
modular10
futures10
validations10
modularity10
typescript10
feature-flags10
typescript210
validation10
refactorings10
type-alias10
javascripts10
typescript-types10
Programming languages (13)
Github contributions (5)
fabian-hiller/valibot
Jul 2023 - Oct 2024
The modular and type safe schema library for validating structural data 🤖
Role in this project:
Back-end Developer
Back-end DeveloperContributions:4 reviews, 3 PRs, 12 comments in 1 year 3 months
Contributions summary:Sebastian primarily focused on refactoring and optimizing the codebase related to record validation within the valibot library. They made changes to the `recordAsync.ts`, `record.ts`, and `values.ts` files, indicating a focus on the core logic of data validation. Their contributions involved refactoring the internal data structures and control flow by leveraging features like `for...of` loops and optimizing performance. The user also addressed security concerns by adding code to exclude blocked keys.
bundle-sizemodularparsingruntimetype-safe
console-rs/dialoguer
Sep 2021 - Oct 2021
Rust utility library for nice command line prompts and similar things
Role in this project:Back-end Developer
Back-end DeveloperContributions:10 commits, 3 PRs, 3 comments in 1 month
Contributions summary:Sebastian primarily refactored the `dialoguer` library, focusing on modularization and feature flags. They treated the `password` module as an optional feature and addressed Clippy warnings, enhancing code quality. The user also formatted the code using `cargo fmt`. They also worked to loosen trait bounds for the `Validator` and `History` traits, improving code flexibility and maintainability.
promptssimilarsubcommandsrustcommand-line-parser
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