Freelancers using React in San Francisco

Freelancers using React in San FranciscoFreelancers using React in San Francisco

Projects People

Matt Kettelkamp

San Francisco, USA

Web Developer | 3D Developer

58: Followers

Top

Web Developer | 3D Developer

Cover image for 3D Interactive Footer

3D Interactive Footer

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13

Cover image for ChapGen

3

55

Cover image for Fullstack Web App

Fullstack Web App

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62

Cover image for 3D Event Promo

2

26

proSan Francisco, USA

AI Campaign Assets + Agents for DTC Growth

$50k+: Earned

19x: Hired

5.0: Rating

209: Followers

Top

Partner

+1

AI Campaign Assets + Agents for DTC Growth

Cover image for AriaLeaf AI - AI Voice Agent Platform for Dispensaries

AriaLeaf AI - AI Voice Agent Platform for Dispensaries

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106

Cover image for EntangleAI - Quantum Physics Learning Platform

EntangleAI - Quantum Physics Learning Platform

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26

Cover image for Bespoke Punks NFT Platform

Bespoke Punks NFT Platform

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40

Cover image for Elysian DAO DeFi App

Elysian DAO DeFi App

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32

proSan Francisco, USA

AI & ML Engineer

$1k+: Earned

7x: Hired

28: Followers

AI & ML Engineer

Cover image for ReactPro - WordPress to React Conversion

ReactPro - WordPress to React Conversion

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14

Cover image for AI Groceries
An AI-powered online grocery

AI Groceries An AI-powered online grocery delivery platform built with Next.js 15, React 19, Supabase, Claude API, and Stripe. Designed around "The Harvest Table" philosophy -- abundant, warm, and grounded in real food provenance.

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234

Cover image for Biglabs
Consulting-grade template for professional services

Biglabs Consulting-grade template for professional services firms. Manage case studies, articles, services, careers, testimonials, and client consultations with AI-powered analytics. Deploy in minutes, no local setup required. Features Thought Leadership — Publish articles and insights with categories, excerpts, and rich content Service Pages — Present your consulting services with detailed descriptions and feature lists Consultation Booking — Public intake form for prospective clients with scheduling preferences Careers Portal — Post open positions with departments, requirements, benefits, and salary ranges AI Analytics — Claude-powered insights and reporting on your consulting data And more.....

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239

Cover image for AI Vested
An AI-powered investment platform

AI Vested An AI-powered investment platform with Claude AI integration. Deploy in minutes, no local setup required.

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258

proSan Francisco, USA

AI-First Full Stack Developer | SaaS, PropTech & Health Tech

14: Followers

AI-First Full Stack Developer | SaaS, PropTech & Health Tech

Cover image for Instashowing - Showing Bookings & Offers Platform | React + ROR

Instashowing - Showing Bookings & Offers Platform | React + ROR

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15

Cover image for HomeBldr - Investment & Renovation Solutions

HomeBldr - Investment & Renovation Solutions

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4

Cover image for Bliv - Reimagined Telemedicine Solution

Bliv - Reimagined Telemedicine Solution

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3

Cover image for Sparrowell - A HIPAA-Compliant WebApp

Sparrowell - A HIPAA-Compliant WebApp

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3

San Francisco, USA

Full-stack developer

6: Followers

Full-stack developer

Cover image for Your Supabase app is working…

Your Supabase app is working… but your database is still exposed? 🔐 One mistake I see developers make is setting up authentication and forgetting about Row Level Security (RLS). If you're using Supabase, don't just create your tables and move on. Make sure you: ✅ Enable RLS on your tables ✅ Create policies for who can read data ✅ Create policies for who can insert or update data ✅ Never expose sensitive service keys in the frontend ✅ Test your policies with different user accounts Authentication tells you who the user is. RLS helps control what they can access. Have you ever had an RLS policy block something that should have worked? 👇

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Cover image for My previous project is a

My previous project is a platform called Goldecity, a modern real estate investment, that combines traditional property investing with cryptocurrency payment, and it's built with React and Tailwind CSS, it mirrors the functionality of Arrived.com (http://Arrived.com) while adding blockchain based transaction capabilities..

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145

Cover image for Your API works… but your

Your API works… but your app still feels slow? 🚨 Sometimes the problem isn't your frontend. It could be the way your backend handles requests. A few things I always check: ⚡ Slow database queries 🔄 Too many unnecessary API calls 📦 Large API responses 🗄️ Missing database indexes 🔐 Authentication running on every request Small backend improvements can make a big difference to the user experience. What’s one performance issue you've struggled with in your project? 👇

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Cover image for Your app works locally… but

Your app works locally… but crashes after deployment? 😩 One of the most common mistakes I see is forgetting that local and production environments are different. Before deploying, always check: ✅ Environment variables are correctly configured ✅ Production database credentials are set ✅ API URLs point to the right environment ✅ CORS settings allow your frontend ✅ Build errors are resolved ✅ Authentication works in production My rule: Never assume that because it works on localhost, it's ready for production. What’s the most frustrating deployment error you've faced? 👇

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158

San Francisco, USA

Creative Coder 🎨 ✶ React ✶ Animations ✶ Data Visualization

Creative Coder 🎨 ✶ React ✶ Animations ✶ Data Visualization

Cover image for Ask I Ching

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13

Cover image for You Otter Know

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Cover image for tBTC Website

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13

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San Francisco, USA

Selling Buoy, so design drift doesn't ship

New to Contra

Selling Buoy, so design drift doesn't ship

Cover image for Aloud started as an experiment

Aloud started as an experiment in generative pattern design and grew into a fully automated product business. I developed a repeatable art technique, built a Figma-to-Airtable pipeline that turned designs into live Shopify products in minutes, and scaled it through print-on-demand pocket tees. I later integrated NFTs on the Terra blockchain so digital ownership earned real royalties on physical sales, rebuilding the platform in React and working directly with smart-contract engineers. Over three years, I shipped daily designs, automated the entire design-to-commerce workflow, and ran the product end-to-end solo—from art and branding to Web3 architecture and fulfillment.

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Cover image for Had a little fun with

Had a little fun with the boat last night... ⛵

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Cover image for As Design Systems Lead at

As Design Systems Lead at IXL Learning, I led the creation of a shared design system to unify five-plus products across a decades-old brand. I managed a team of designers, established a biweekly cadence for audits and reviews, and worked directly with product teams to ensure components were built for real production needs. Using atomic design principles and strong foundational tokens for color, spacing, and typography, we created a system that reduced drift, sped up delivery, and made new UI feel cohesive by default. The result was a living design system that teams actually adopted because it worked in practice, not just in theory.

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Cover image for As Founding Designer at Zeal,

As Founding Designer at Zeal, I built the product’s UX and UI from zero, designing data tools that helped teachers make sense of student progress across Common Core standards. I spent multiple days per week in classrooms observing real use, during lessons, between classes, and in planning meetings, and redesigned based on what actually worked under time pressure. I led the design of teacher dashboards, proficiency heatmaps, goal-setting tools, and an adaptive classroom game that adjusted difficulty per student while maintaining shared competition. The result was a platform adopted by 100+ schools, where teachers could understand class progress in seconds and make better instructional decisions without wading through raw data.

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88

San Francisco, USA

Crafting digital products in the SF Bay Area 🌉

1x: Hired

1: Followers

Crafting digital products in the SF Bay Area 🌉

Cover image for HUMMING HOMES — Brittany Shuck

HUMMING HOMES — Brittany Shuck

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Cover image for STRELLA BIOTECH — Brittany Shuck

STRELLA BIOTECH — Brittany Shuck

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Cover image for Courant - MAG:3 Landing Page

Courant - MAG:3 Landing Page

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3

Cover image for W&P - CKSS Landing Page

W&P - CKSS Landing Page

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3