Fullstack Developer

Carlos
Lavayen

I build fast, accessible, and beautifully crafted web experiences — I build across the full stack — from APIs and databases to pixel-perfect, performant UIs.

View my workGet in touch
Carlos Lavayen
Scroll

About me

About

Hey, I'm Carlos — a fullstack developer based in Florida. I love turning complex problems into clean, intuitive products that people actually enjoy using.

I work across the full stack — building REST APIs, wiring up databases, architecting data pipelines, and crafting pixel-perfect UIs. The intersection of design, performance, and engineering is where I do my best work.

When I'm not shipping code, you'll find me on the rugby pitch — which has taught me more about teamwork and resilience than any dev course ever could.

Download ResumeGitHub

Experience

Work

Fullstack Developer

FreeCast ↗
Nov 2024 — Present
  • Worked across freecast.com, corp.freecast.com, and cablefreetvkit.com
  • Grew organic traffic by +160% (691K visitors, 1.59M page views) through SEO-focused engineering
  • Architected an internal analytics dashboard integrating GA4 and BigQuery
  • Delivered GDPR-compliant implementations across all products
  • Integrated Sanity CMS, Iterable email automation, and Vercel deployment pipelines

Freelance Developer

Self-employed
2023 — Present
  • Built and maintain claymoresrfc.com — automated match schedule pipeline via cron jobs and GitHub Actions
  • Developed cflmelee.com, a community hub integrating the start.gg API for live tournament data
  • Designed and built ernestos-portfolio.vercel.app for a creative/media client
  • Scraped and preserved Florida rugby historical records via a custom Next.js app

My Stack

Frontend

JavaScriptJavaScript
TypeScriptTypeScript
ReactReact
Next.jsNext.js
Tailwind CSSTailwind CSS
Framer MotionFramer Motion
GSAPGSAP
ReduxRedux
SassSass

Backend

Node.jsNode.js
NestJSNestJS
ExpressExpress
Sanity CMSSanity CMS
Web ScrapingWeb Scraping

Database

PostgreSQLPostgreSQL
MySQLMySQL
MongoDBMongoDB
PrismaPrisma
Drizzle ORMDrizzle ORM
SQLSQL

Analytics

GCPGCP
BigQueryBigQuery
GA4GA4
Data Analysis

Tools

GitGit
DockerDocker
AWSAWS
VercelVercel
FigmaFigma
PostmanPostman
GitHub ActionsGitHub Actions
CI/CD

Practices

Scrum
Agile

AI

Claude CodeClaude Code
CursorCursor
GitHub CopilotGitHub Copilot
CodexCodex

Selected Work

Projects

01

FreeCast

Worked across three interconnected products — freecast.com, corp.freecast.com, and cablefreetvkit.com. Drove a +160% increase in visitors and +119% growth in page views (1.59M) through SEO-focused engineering and content architecture. Built a GDPR-compliant platform, integrated Iterable for email automation, and architected an internal analytics dashboard powered by GA4 and BigQuery.

Next.jsTypeScriptSanityVercelIterableGA4BigQueryGDPR
FreeCast screenshot
Live
02

Claymores RFC

Built and maintain the official site for the Central Florida Claymores Rugby Club. Engineered an automated data pipeline using cron jobs to continuously keep match schedules and results up to date, with GitHub Actions handling automated data backups. Content managed via Sanity CMS with contact and notifications powered by Resend.

Next.jsSanityResendGitHub ActionsCron JobsTypeScript
Claymores RFC screenshot
Live
03

CFL Melee

Solo-built community hub for the Central Florida Super Smash Bros. Melee scene. Integrates the start.gg API to surface upcoming local tournaments and events in real time. Covers power rankings, stream broadcasts, and community links — a single destination for the regional scene.

Next.jsTypeScriptstart.gg API
CFL Melee screenshot
Live
04

Florida Rugby History

Scraped and preserved the historical match and competition records of Florida rugby — data that existed only on an aging site at risk of being lost. Built a clean, searchable interface to make decades of records accessible and browsable.

Next.jsTypeScriptWeb ScrapingVercel
Florida Rugby History screenshot
Code
05

Apes Slippi Rank Reporter

A Discord bot that tracks Super Smash Bros. Melee player rankings via the Slippi API. Monitors a watchlist of players, polls for rank changes every 12–15 seconds, and posts live updates directly to Discord channels. Built entirely in TypeScript.

TypeScriptDiscord.jsNode.jsSlippi API
Apes Slippi Rank Reporter screenshot
Code

SEO

Search
First.

Beautiful sites that nobody finds are just expensive art. I treat SEO as part of the engineering process — not an afterthought.

01

Core Web Vitals

I build with performance as a first-class concern — optimising LCP, CLS, and INP through proper image handling, font loading strategies, and layout stability.

02

Semantic HTML & Accessibility

Clean, meaningful markup isn't just good for screen readers — it's the foundation search engines crawl. Every project ships with correct heading hierarchy, ARIA labels, and landmark regions.

03

Structured Data (JSON-LD)

I implement schema.org markup to give search engines rich context about content — enabling rich results, knowledge panels, and better click-through rates.

04

Metadata & Open Graph

Every page gets a considered title, description, and social preview. Using Next.js's Metadata API, I ensure pages look great whether shared on Google, LinkedIn, or Slack.

05

Technical SEO

Sitemaps, canonical URLs, robots.txt, and proper redirect handling — the unglamorous work that makes the difference between a site that ranks and one that doesn't.

06

Server-Side Rendering

SPAs are invisible to search engines without careful handling. I leverage Next.js SSR and SSG to ensure content is fully crawlable out of the box.

Contact

Let's
Talk.

Have a project in mind, want to collaborate, or just want to say hi? My inbox is always open.

carlos@example.com
GitHubLinkedInTwitter