
I build web and mobile products end to end, from React Native apps to Django and NestJS backends, and lately a lot of applied AI. Thirteen years shipping for Cisco, DrChrono, Tone, and the American Kennel Club, plus products of my own through MyndsIT.
Frontend: React, React Native, Expo, Next.js, TypeScript, Tailwind, Vue.js, Angular, Flutter
Backend: Node.js, NestJS, Django, FastAPI, Express, GraphQL, REST
Data and cloud: PostgreSQL, Firestore, Supabase, MongoDB, Redis, Firebase, Docker, GitHub Actions
AI: LLM integration, LangChain, Transformer models, Claude API, OpenAI
Portfolio: https://www.marnylopez.com


Lead security compliance under Cisco's Secure Development Lifecycle (CSDL) for an organization of about 140 people across 18 team...
Lead security compliance under Cisco's Secure Development Lifecycle (CSDL) for an organization of about 140 people across 18 teams.
- Created the security and compliance management process where there was none, and standardized the tools teams use to report and respond to vulnerabilities.
- Audit security vulnerabilities and coordinate fixes across teams until they ship.
- Built SHIELD, the reporting platform management and teams use to act on vulnerabilities and compliance gaps (NestJS, Node.js workers, React, TypeScript, PostgreSQL, Redis).
- Every team now tracks its security compliance areas; open vulnerabilities dropped sharply and measured code quality went up.
- Use AI-assisted development with Claude, Cursor, and Copilot, and trained models on internal knowledge so teams can query it directly.
My studio for client work and my own products across web and mobile.
- Deliver full-stack web and mobile applications for clients....
My studio for client work and my own products across web and mobile.
- Deliver full-stack web and mobile applications for clients.
- Build and run my own SaaS products, including Travelix, Mobifactura, Rentivo, and Orvis.
- Use new products to pick up unfamiliar stacks and stay current.
Payments team for the DrChrono and onpatient healthcare applications.
- Built and maintained payment features across web and mobil...
Payments team for the DrChrono and onpatient healthcare applications.
- Built and maintained payment features across web and mobile clients.