Hello, I'm Daphne.
Daphne Charles — Senior Software Engineer& AI Systems Builder
I build production AI systems and high-traffic platforms, from multi-agent pipelines to enterprise products at Fortune 500 scale.
When I'm not shipping code, I'm matcha in hand, studying French, or planning my next trip.
Selected Projects
A few of the products I've shipped, from enterprise platforms at Fortune 500s to AI tools built from scratch.
Sparx Growth Engine · Sparx Labs
Python · FastAPI · Claude LLM · LangGraph · Apollo.io · Attio
Trailhead Careers Marketplace · Salesforce
Web Components · TypeScript · GraphQL · Ruby on Rails
Trailhead Learning Paths · Salesforce
Web Components · TypeScript · GraphQL · Ruby on Rails
Card Application · American Express
React · TypeScript · GraphQL · Node.js
Car Configurator · BMW
Angular · JavaScript · Node.js
KIWIK · ETHGlobal
Solidity · React · Lens Protocol · Polygon · Worldcoin · Chainlink · Superfluid
Work Experience
7+ years building products that scale, across some of the most demanding technical environments in the industry.
Co-Founder and CTO, Sparx Labs
I co-founded Sparx Labs, an AI agency helping mid-market businesses build and deploy custom AI tools. I architected the Sparx Growth Engine, a production multi-agent system built on LangGraph, FastAPI, and Claude, with human-in-the-loop approval before any outreach is sent, and launched the AI for Entrepreneurs course, reaching 200+ businesses across the US and globally, backed by America's Small Business Development Center.
Senior Software Engineer, Salesforce
I led development of the Trailhead Careers Marketplace, a platform serving 50,000+ daily active users with 12% quarterly growth. I built the enterprise design system adopted by 5 teams and 25 engineers (30% faster delivery, 50% fewer bugs), and modernized CI/CD infrastructure to support daily production deployments at 99.9% uptime.
Full Stack Software Engineer, American Express
I delivered the Know Your Customer feature that reduced pending applications by 35% and generated $275K in annualized business value. I also led a full migration from an AngularJS monolith to React microservices, modernizing 50K+ lines of code, and mentored 8 junior engineers through structured code reviews and pair programming.
Front End Web Developer, BMW
I redesigned the CRM interface using Angular and TypeScript, boosting customer leads by 15% and mobile conversion by 22% for a platform serving 10,000+ daily users. I integrated RESTful APIs, maintained deployment pipelines via Jenkins CI/CD, and managed the national website through Adobe Experience Manager.
Let's build somethingthat matters.
I work with companies, research institutions, and nonprofits that need someone who can think at the system level and ship at the code level. If that's you, I'd love to hear what you're working on.