Full-Stack & Mobile App Developer · Cartersville, GA

Built two products solo. Ready to build yours.

Self-taught developer who designed, built, and shipped two production SaaS platforms end to end — web, native iOS/Android apps, and AI integrations, architecture through app store submission. Thirty years running high-volume kitchens before that, which is where the discipline to actually finish things comes from.

For Employers → For Businesses →

— order up —

Ticket 01

For Employers

Looking for a full-stack developer who ships. Two production SaaS apps and this portfolio site, built solo, are the proof.

Resume

StackReact · Next.js · Supabase

AvailabilityImmediate

Get in touch

Ticket 02

For Businesses

Need a website or small web app built right, by someone who actually talks to you like a person.

Business sitesfrom $1,500

Site refreshquote on request

Small web appsquote on request

iOS / Android appsquote on request

AI integrationquote on request

Automationsquote on request

Request a quote

Case Studies

What's been built

keymacro.fit

KeyMacro.fit

AI-powered nutrition & training platform

Solo-built cross-platform app — React/TypeScript PWA + Capacitor iOS/Android on Supabase — 189+ components, 19 custom hooks, 12 Deno Edge Functions, 30+ Postgres migrations
Hybrid AI architecture (OpenAI) routed server-side — zero client-exposed API keys — meal planning, computer-vision food logging, and AI coaching with persistent memory
Unified Stripe (web) + RevenueCat (iOS/Android IAP) subscription system with database-level privilege guards
Native integrations: iOS WidgetKit + Android home-screen widgets, HealthKit/Health Connect sync, Face ID/biometric app lock
Production app scores 98 (Performance), 100 (Accessibility, Best Practices, SEO) on Lighthouse mobile audit

Visit keymacro.fit ↗

ReactTypeScriptSupabase CapacitorOpenAIStripe

slidepress.co

SlidePress

AI-powered social media content platform

Full-stack web app (Next.js 16, React 19, Supabase) with native iOS/Android apps via Capacitor
Integrated Google Gemini, Fal.ai, and ElevenLabs for content, image, and voice generation
Built OAuth publishing integrations with YouTube, TikTok, and Instagram, navigating each platform's formal developer review process
Stripe + RevenueCat billing, webhook-driven entitlements, usage metering; submitted through App Store Connect and Google Play Console
Production app scores 100 across Performance, Accessibility, Best Practices, and SEO on Lighthouse desktop audit

Visit slidepress.co ↗

Next.jsReactSupabase CapacitorGeminiOAuth

www.rayburgos.com

Ray Burgos portfolio site — custom single-page site on Vercel

Personal Portfolio

Built and self-hosted — live on Vercel

Designed and built a custom single-page site (no framework) with a distinct visual identity, responsive layout, and accessible markup
Implemented technical SEO: Open Graph & Twitter card metadata, JSON-LD structured data, sitemap.xml, robots.txt
Performance-tuned to Lighthouse scores of 99 (Performance), 98 (Accessibility), 96 (Best Practices), 100 (SEO) on mobile audit

Visit www.rayburgos.com ↗

HTML/CSSVercelJSON-LD SEOAccessibility

Technical Stack

What I build with

Frontend

ReactTypeScript Next.jsNode.js Web Design

Backend

SupabasePostgreSQL Auth & RLSEdge Functions REST APIs

Mobile

CapacitorHealthKit Health ConnectWidgetKit App Store

DevOps

VercelGitHub Actions CI/CDOAuth

AI & APIs

OpenAIGemini Fal.aiElevenLabs

Web & Quality

StripeRevenueCat SEOJSON-LD PerformanceAccessibility

Freelance Menu

Ways to work together

Business website

A modern, mobile-responsive site built for your business — 5–7 pages, contact form, fast to launch.

Site modernization

Got a site that's outdated or slow? I'll rebuild it clean, fast, and easy for you to update.

Small web apps

Booking systems, ordering tools, simple dashboards — custom-built for how your business runs.

iOS & Android apps

Native-feeling mobile apps for iOS and Android from a single codebase — built and shipped twice already.

AI integration

Add AI features to your product — content generation, computer vision, or custom AI workflows using OpenAI, Gemini, and similar APIs.

Automations

Connect the tools you already use — booking alerts, CRM sync, webhook workflows, and repetitive tasks handled without manual work.

About

From the kitchen to the keyboard

For 30+ years I ran high-volume kitchens — managing teams of 6 to 10, controlling costs, negotiating with vendors, and keeping quality consistent under real pressure, night after night.

That job teaches you something you can't fake: how to actually finish things when it matters, not just plan them.

I taught myself to build software and applied that same discipline to it. Over the past stretch I designed and shipped two full production SaaS platforms on my own — web apps, native iOS/Android apps, AI integrations, payment systems, and marketing sites — through to app store submission.

I'm not new to being responsible for something real. I'm new to doing it in this domain — and I'm ready to keep building.

A.A., Media & Web Design — Full Sail University Computer Science coursework — Florida Atlantic University (2 yrs, not completed)

Let's talk about what you need built.

Email is best. Text works too — no phone calls.

keymacro.dev@gmail.com

Best for project details

+1 561 591 2433 Text only