Alex Rivera

Senior Full-Stack Developer

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About

Alex Rivera is a Senior Full-Stack Developer specializing in building delightful, high-performance web applications with a strong focus on clean UX, accessibility, and measurable results. With expertise in Next.js, React, TypeScript, and Node.js, he is adept at leveraging modern full-stack technologies like Postgres, Prisma, tRPC, and GraphQL to deliver robust, scalable solutions. He actively explores cutting-edge innovations such as edge runtimes and server actions to optimize developer experience and application performance.

Work Experience

Senior Full-Stack Engineer

Porty Labs

Aug 2023 - Present

Remote, Any, US

Led full-stack development and architectural migration for Porty Labs, enhancing performance and developer workflows.

  • Spearheaded the migration to Next.js App Router and Server Actions, optimizing application architecture for enhanced scalability and performance.
  • Developed a dynamic portfolio template system utilizing MDX content, enabling flexible and efficient content generation.
  • Significantly improved Core Web Vitals, reducing Largest Contentful Paint (LCP) by 35% and Cumulative Layout Shift (CLS) by 60%.
  • Introduced a Playwright E2E testing suite and CI checks, boosting code quality and deployment reliability.

Frontend Engineer

Acme Corp

May 2020 - Jun 2023

San Francisco, CA, US

Designed and implemented critical frontend features and infrastructure for Acme Corp, focusing on user experience and maintainability.

  • Shipped a reusable component library built with React and Tailwind CSS, standardizing UI/UX and accelerating development cycles.
  • Implemented robust feature flags and A/B testing frameworks, enabling data-driven product decisions and controlled feature rollouts.
  • Enhanced accessibility from AA to AAA compliance on key user flows, significantly improving user experience for diverse audiences.

Software Engineer Intern

ByteWorks

Jun 2019 - Sep 2019

New York, NY, US

Contributed to core development at ByteWorks, focusing on data visualization and system reliability.

  • Developed interactive dashboards using Chart.js, integrating with REST APIs to visualize key data metrics.
  • Authored comprehensive integration tests, reducing bugs and improving overall system stability.
  • Streamlined error handling processes, enhancing application resilience and user feedback mechanisms.

Education

Advanced React & TypeScript

Frontend Masters

Feb 2022 - May 2022

Online, Any, US

Courses

  • Advanced patterns
  • Performance optimizations
  • Type-safe component APIs

Computer Science

University of California, Berkeley

Aug 2016 - May 2020

Berkeley, CA, US

Courses

  • Algorithms
  • Databases
  • Operating Systems
  • Human-Computer Interaction

Certificates

AWS Certified Cloud Practitioner

Amazon Web Services

Oct 2022

Scrum Master

Scrum Alliance

Apr 2021

Google Analytics Individual Qualification

Google

Sep 2020

Projects

Portfolio Generator

Jan 2023 - Dec 2023

An AI-assisted portfolio builder with live template switching and PDF export capabilities.

Realtime Chat

Jan 2023 - Dec 2023

A minimal Slack-like chat application featuring presence and optimistic UI updates.

Analytics Dashboard

Jan 2023 - Dec 2023

A modular analytics dashboard with pluggable KPI widgets and role-based access for teams.

Design System

Jan 2023 - Dec 2023

A token-driven UI library with comprehensive theming and accessibility baked in.

E-commerce Starter

Jan 2023 - Dec 2023

An SSR storefront with comprehensive cart, checkout, and admin console functionalities.

Open Source CLI

Jan 2023 - Dec 2023

A command-line interface (CLI) to scaffold and lint full-stack applications with one command.

Awards

Winner DevCon Hackathon

DevCon Hackathon

Nov 2023

Built a real-time collaboration tool judged Best Product.

Open-Source Contributor

Open-Source Community

Aug 2022

Contributions merged into popular open-source libraries (documentation, fixes, developer experience improvements).

Employee of the Quarter

Acme Corp

Jun 2021

Recognized for exceptional delivery speed and cross-team mentorship.

Skills

Programming Languages

  • TypeScript
  • JavaScript

Frontend Frameworks

  • React
  • Next.js
  • Tailwind CSS
  • Radix UI

Backend Technologies

  • Node.js
  • Express
  • tRPC
  • GraphQL
  • Prisma
  • PostgreSQL
  • Stripe
  • ClickHouse

Testing & Quality Assurance

  • Playwright
  • Jest
  • ESLint

DevOps & Cloud

  • Docker
  • AWS
  • Vercel
  • CI/CD

Tools & Methodologies

  • Zod
  • Storybook
  • MDX
  • Server Actions
  • Edge Runtimes
  • WebSockets