Freelance Software Architects in California

Freelance Software Architects in CaliforniaFreelance Software Architects in California

Projects People

Crispin Courtenay

Enterprise AI architect: GraphRAG, agents, zero-trust.

New to Contra

Enterprise AI architect: GraphRAG, agents, zero-trust.

Cover image for MCP Market is the financial

MCP Market is the financial operating system for AI agents. Launching end of February 2026, it's the first platform that lets autonomous agents actually buy and sell stuff—think Stripe meets AWS billing, but for intelligent software. It solves the extension payment crisis (Chrome killed their payment system), enables agent-to-agent commerce with crypto rails, and meters AI resource usage down to fractions of a cent per API call. Developers can monetize their agents with granular pay-as-you-go pricing while users get "kill switch" budgets to prevent rogue agents from draining their wallets. It's cloud-grade billing infrastructure accessible to individual devs, bridging local AI runtimes with global payments through both fiat and USDC.

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Cover image for Git Conflict Management System for AI-Human Integration

Git Conflict Management System for AI-Human Integration

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Cover image for Autonomous Email and Planning Triage

Autonomous Email and Planning Triage

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Cover image for Unified Intelligence in Venture Capital Operations

Unified Intelligence in Venture Capital Operations

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Software Architect(2)

Zach Vaillancourt

Los Angeles, USA

Application Development with a Silicon Valley Engineer

Application Development with a Silicon Valley Engineer

Cover image for Founder: Bloqqit (Developer Oriented CMS)

Founder: Bloqqit (Developer Oriented CMS)

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Cover image for OpenAI Agent System

OpenAI Agent System

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Cover image for Technical Cofounder: Visual note-taking web app with ChatGPT

Technical Cofounder: Visual note-taking web app with ChatGPT

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Software Architect(2)

pro

San Francisco, USA

AI Campaign Assets + Agents for DTC Growth

$50k+: Earned

19x: Hired

5.0: Rating

168: Followers

Top

Partner

+1

AI Campaign Assets + Agents for DTC Growth

Cover image for Elysian DAO DeFi App

Elysian DAO DeFi App

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Cover image for Recess Spec Product Photography Campaign

Recess Spec Product Photography Campaign

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Cover image for Cinematic Storytelling for Liquor Brands

Cinematic Storytelling for Liquor Brands

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Cover image for AI Wellness Product Photography Spec Work

AI Wellness Product Photography Spec Work

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Software Architect(1)

Full-Stack Engineer & Product Designer (Mobile + Web)

6: Followers

Full-Stack Engineer & Product Designer (Mobile + Web)

Cover image for Showcasing the website for Drop The Routine with screenshots...

Showcasing the website for Drop The Routine with screenshots highlighting the clean, modern details. Drop The Routine is a creator platform that lets specialists and influencers build, share, and monetize structured routines — from fitness to skincare to finance. It features: 💡 A step-by-step builder that turns expert knowledge into guided routines 🛍️ Built-in affiliate tools for monetizing recommended products 📱 Seamless experience across web and mobile This project showcases full-stack design and development — React/Next.js/Chakra UI, React Native, and AWS infrastructure. It's been a blast to build!

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Cover image for Drop The Routine can be fully white-labeled for businesses a...

Drop The Routine can be fully white-labeled for businesses and clinics. This version was customized for a prominent sports physical therapy group here in Southern California — giving their patients (and athletes around the world) a seamless way to follow prescribed physical therapy routines, complete with videos, instructions, and progress tracking. It allows practitioners to: 🏥 Assign step-by-step recovery routines directly to patients 📱 Track engagement and outcomes through the app 💬 Educate patients between visits and reinforce accountability Built with React Native and AWS — scalable, branded, and deployable in days.

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Cover image for Excited to share this one! Drop The Routine is a web and mob...

Excited to share this one! Drop The Routine is a web and mobile platform where routines can be built, shared, monetized, and followed. It gives creators and specialists a new way to turn their expertise into income — and gives their followers structured, step-by-step routines designed for real results. Built-in progress tracking helps users stay consistent and accountable. From skincare and haircare to fitness, nutrition, and personal finance — Drop The Routine empowers creators across every niche to help their audiences follow through. This screen shows the creator landing page — where we introduce the platform’s vision and invite experts to join early. I built this with React/Chakra UI/Next.JS, all served and hosted on AWS infrastructure.

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Cover image for I built Didja — a minimalist habit tracking app — to help me...

I built Didja — a minimalist habit tracking app — to help me achieve my longterm goals by holding me accountable to daily action. It lets users define their goals, create daily or weekly routines that support them, and stay accountable through simple, structured tracking that promotes action. I designed it to be clean, distraction-free, and genuinely enjoyable to use. I finished it a few months ago, but I still use it everyday!

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Software Architect(1)

Long Beach, USA

Customer Experience + Ecommerce Consultant

Customer Experience + Ecommerce Consultant

Cover image for MODERNIZE CUSTOMER CARE WITH DATA-DRIVEN INSIGHTS

MODERNIZE CUSTOMER CARE WITH DATA-DRIVEN INSIGHTS

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Cover image for FULL-SCALE CUSTOMER EXPERIENCE SOLUTION

FULL-SCALE CUSTOMER EXPERIENCE SOLUTION

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Cover image for STREAMLINE WORKFLOWS AND ENGAGEMENT WITH AUTOMATION

STREAMLINE WORKFLOWS AND ENGAGEMENT WITH AUTOMATION

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Software Architect(1)

Los Angeles, USA

Custom software dev for high-traffic applications

Custom software dev for high-traffic applications

Cover image for Test & Go Vending Machines

Test & Go Vending Machines

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Cover image for Bot Butcher: context aware website spam filter for developers

Bot Butcher: context aware website spam filter for developers

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Cover image for Outsourced Chief Investment Officer Due Diligence Platform

Outsourced Chief Investment Officer Due Diligence Platform

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Software Architect(1)

San Francisco, USA

Blockchain Dev: Fast, Experienced & Adaptable

Blockchain Dev: Fast, Experienced & Adaptable

Cover image for Indexer

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Cover image for ERC-7518: Dynamic Compliant Interop Security Token

ERC-7518: Dynamic Compliant Interop Security Token

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Cover image for Smart Contract Development for Real Estate

Smart Contract Development for Real Estate

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Software Architect(2)

AWS Architect & Java Developer Extraordinaire

AWS Architect & Java Developer Extraordinaire

Cover image for Event-Driven Application with AWS Lambda, Kinesis, and SQS

Event-Driven Application with AWS Lambda, Kinesis, and SQS

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Cover image for Migrating a big table from RDS to DynamoDB

Migrating a big table from RDS to DynamoDB

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Cover image for Optimizing Data Processing with AWS Kinesis

Optimizing Data Processing with AWS Kinesis

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Software Architect(3)