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Full Stack Engineer

Steven Zimmer

I build fast web products, AI-enabled workflows, and content platforms that help teams launch cleaner experiences and grow organic demand.

Steven Zimmer headshot

Focus Areas

Performance engineering
AI-enabled workflows
CMS and content platforms
Technical SEO

Full-stack engineering for product, marketing, and go-to-market teams.

Trusted by teams and founders

Recent Freelance Work

Selected engagements across web performance, content systems, technical SEO, and launch support.

Webflow Templates and Go-to-Market Systems

Built reusable Webflow templates and HubSpot form workflows so marketing teams could launch product pages faster and capture leads with cleaner CRM handoffs.

Webflow

HubSpot

Google Analytics

Google Tag Manager

Lottie

A/B Testing

Go-to-Market

Benji Bakes E-Commerce Website logo

Benji Bakes E-Commerce Website

Built a Next.js storefront with Stripe checkout and email workflows, giving Benji Bakes a faster ordering experience and a maintainable path for growth.

React

Next.js

Stripe

Nodemailer

Zustand

Loom Launch Systems

Acquired by Atlassian

Supported Loom and Atlassian integration work with scalable CMS workflows, launch-ready pages, and front-end systems for AI-focused go-to-market moments.

Sanity CMS

Contentful CMS

React

TypeScript

Design Systems

Go-to-Market

Self-Service HubSpot CMS Modules

Designed HubSpot modules that gave content teams drag-and-drop control while preserving design consistency, SEO structure, and developer velocity.

HubSpot

HubL

CSS

JavaScript

SEO

Reusable Components for Web and Email

Created shared component patterns for web and email production, helping teams ship pages and campaigns with less rework and stronger brand consistency.

React

TypeScript

Component Library

Email Templates

Design Systems

HubSpot CMS Rebuild for Brand Visibility logo

HubSpot CMS Rebuild for Brand Visibility

Acquired by Cloudera

Rebuilt the Verta site on HubSpot CMS to support a rebrand, improve publishing workflows, and give marketing teams a cleaner web and email foundation.

HubSpot CMS

Technical SEO

Marketing Automation

Email Development

Analytics

Shopify Rebuild for Revenue and Performance

Led a Shopify rebuild focused on speed, merchandising flexibility, and conversion paths, creating a stronger storefront for customer experience and revenue.

Shopify

Liquid

Shopify API

Shopify CLI

Performance Optimization

Unified WordPress Migration for SEO and UX

Directed a multi-platform migration into WordPress, simplifying governance and improving technical SEO, URL strategy, and user experience.

WordPress

Webflow Migration

Drupal Migration

Technical SEO

Content Architecture

WordPress Optimization for Traffic and Revenue

Improved a high-traffic WordPress affiliate site with performance, caching, image, and database work that supported organic visibility and revenue growth.

WordPress

Caching

Image Optimization

Database Optimization

Theme & Plugin Customization

Modern Website with Next.js and Headless CMS logo

Modern Website with Next.js and Headless CMS

Delivered a headless marketing site with Next.js, AWS, and polished interactions, improving content agility, brand presentation, and publishing speed.

React

Next.js

Headless CMS

AWS S3

AWS Amplify

CloudFront

Framer Motion

WordPress Rebuild Aligns with Strategic Rebrand

Acquired by Harness

Led a WordPress and Gutenberg rebuild for a rebrand and acquisition push, improving launch coordination and modernizing email templates for faster campaigns.

WordPress

Gutenberg

Email Automation

Template Systems

Go-to-Market

Front-End Web Development Course Leadership

Led a 12-week front-end development program, mentoring students through production-focused HTML, CSS, JavaScript, React, and project work.

HTML

CSS

JavaScript

React

Curriculum Design

Mentorship

Website Optimization and Security Enhancement logo

Website Optimization and Security Enhancement

Improved site speed and technical SEO while removing a spam-link infection, restoring search integrity, and hardening the WordPress platform.

Technical SEO

Performance Optimization

Security Hardening

WordPress

Webflow to HubSpot CMS Migration and Rebrand logo

Webflow to HubSpot CMS Migration and Rebrand

Migrated a rebranded site from Webflow to HubSpot CMS, giving marketing teams more scalable content operations across customer-facing pages.

Webflow

HubSpot CMS

Migration Planning

Rebrand Rollout

Revamped Sign-Up and Activity Tracker Boosts Enrollment logo

Revamped Sign-Up and Activity Tracker Boosts Enrollment

Redesigned enrollment and student-progress experiences to reduce friction, improve motivation, and support stronger learning-sprint completion.

React

UX Optimization

Product Analytics

Experimentation

Data Visualization

Drupal Upgrade and Server Architecture Overhaul logo

Drupal Upgrade and Server Architecture Overhaul

Modernized Stanford Medicine web infrastructure with Drupal upgrades, server architecture work, and enterprise authentication integrations.

Drupal 7

Drupal 9

Server Architecture

SAML

Box Integration

Personal Projects

Small product builds that show modern React, API integration, and interface engineering.

OpenAI logo

ZimGPT

  • OpenAI API chat experience built with React, TypeScript, and shared state.

Todos

  • Persistent task app built with React, TypeScript, and Tailwind CSS.

Tic Tac Toe

  • Interactive game built with React state management and Tailwind CSS.

Floating Clock

  • Clock interface using JavaScript date logic, positioning, and contrast-aware styling.

Mdrn Dsgn

  • Concept marketing site exploring responsive layout and visual systems.

Stats and Graphs

  • Data visualization demo using generated stats and chart components.

Box Scores App

  • Sports scores app for browsing NBA and MLB box score data.

Dog Guessing Game

  • Breed guessing game built with React, TypeScript, Tailwind, Vite, Immer, and the dog.ceo API.

Engineering Toolbox

Tools I use to build reliable frontends, APIs, content workflows, AI features, and growth infrastructure.

Frontend

HTML/CSS

Vanilla JavaScript

TypeScript

React

jQuery

Redux

Zustand

Gutenberg Blocks

HubL

Liquid

Tailwind CSS

PostCSS

Framer Motion

Backend

Node.js

Next.js

Express.js

Remix

PHP

Laravel

Gatsby

AWS

Prisma ORM

NoSQL

PostgreSQL

MySQL

GraphQL

REST APIs

MongoDB

Technical SEO

AI/ML

OpenAI API

Codex

Anthropic API

Claude Code

Cursor

Google Gemini

Vercel AI SDK

Vector Databases (Pinecone, Supabase)

Evaluation & Guardrails

Tools

Webpack

Git

Command Line

GitHub

Vite

Okta

ElasticSearch

Statsig

Optimizely

Microsoft Clarity

Hotjar

LaunchDarkly

Zapier

Stripe

Firebase

Clerk

Auth0

CMS

WordPress

HubSpot

Sanity

Strapi

Contentful

Webflow

Marketing

HubSpot

Marketo

Pardot

Salesforce

Mailchimp

MJML

Email Templates

Landing Pages

Google Analytics

Google Tag Manager

Google Search Console

UI Design

Figma

Adobe

Sketch

Lottie

Certifications

Platform training focused on CMS development, technical SEO, and maintainable web systems.

Let's build together

Need a faster, clearer web platform?

I help teams turn complex product, CMS, and growth requirements into maintainable systems that are easy to ship and easy to find.