Hey, I'm Jayslen ↗

Software
Developer .

Final-year Software Development student at ITLA. I build modern full-stack applications, automate processes, and explore what's possible with code.

Based in Dominican Republic · UTC−4
developer.ts
// a little bit about me
const developer = {
name: "Jayslen Rojas Serrano" ,
focus: "Full-stack development" ,
stack: [
"React",
"TypeScript",
"Node.js",
"Rust"
],
mindset: "Always learning"
};
build( ideas);
⌘ main* TypeScript ✓
↳ Currently exploring Rust
01 /

Work experience

March 2026 — Present
Present

Grupo Estrella

↗

Process Automation & Data Analysis Intern

  • Automating internal processes with Power Automate to reduce manual work and improve operational efficiency.
  • Building interactive Power BI dashboards to support data analysis for the audit department.
  • Cleaning, transforming, and modeling data for clearer insights and better decision-making.
Power Automate Power BI Data Analysis
02 /

Selected projects

All repositories

Huffman Coding in Rust

01

Lossless file compression and decompression using Huffman coding, with multithreaded file processing. Built in Rust for learning and experimentation; not intended for production use.

Rust

BMP Image Renderer

02

A little exploration of pixels and performance. Decode BMP images and render them directly in the console.

Rust

Sales Analytics with ETL

03

Turning raw data into useful insights. A pipeline that extracts, transforms, and loads sales data.

RustBunPostgreSQL

Tic Tac Toe Online

04

A classic game, connected. Play in real time with friends through a lightweight WebSocket experience.

ReactTailwind CSSNode.js

Caching Proxy Server

05

Fewer requests, faster responses. A caching proxy for third-party APIs, built with Bun and TypeScript.

BunTypeScript

Latinoled

06

Wordle with a Latin American twist. A daily word game that celebrates our words and culture.

ReactTailwind CSS

Kanban Task Management

07

A clearer way to get things done. Create boards, organize tasks, and keep your workflow moving.

ReactTypeScriptNode.jsMySQLTailwind CSSReact Router DOM
03 /

My toolkit

</> Frontend

HTMLCSSJavaScriptTypeScriptReactReact Router DOMAstroTailwind CSS

{ } Backend

Node.jsBun

▤ Databases

MySQLPostgreSQLMongoDB

↗ Data & automation

Power BIPower Automate

⌘ Programming languages

JavaScriptTypeScriptRustPython

⌥ Workflow & tools

GitHubGitFigma
04 /

Certifications

05 /

A little more about me

BEYOND THE CODE

Curiosity is my starting point.

↳ Final-year student · ITLA
↳ Full-stack development
↳ Currently exploring Rust

I'm Jayslen Rojas Serrano, a software developer focused on building modern, fast, and scalable web applications. I enjoy connecting a thoughtful interface with the logic that makes it work.

From React and Astro on the frontend to Node.js, Bun, and SQL or NoSQL databases on the backend, I like understanding the whole picture. Lately, that curiosity has taken me into Rust and high-performance software.

Personal and academic projects are my playground for good engineering practices, version control, and testing. I'm always learning, asking questions, and looking for a better way to solve a problem.

Find me on GitHub