Marny A. López

Marny A. López

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ABOUT ME
Senior Fullstack Software Engineer
Senior Fullstack Software Engineer

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

Spanish, English
Central America (-06:00)
Joined February 2022
EXPERTISE
5 years experience
4 years experience
4 years experience
8 years experience
10 years experience
6 years experience
10 years experience

REVIEWS FROM CLIENTS

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SOCIAL PRESENCE
GitHub
angular-left-scrollable-cards-with-counter
Created with CodeSandbox
TypeScript
0
0
Vue-Custom-Context-Menu-Bootstrap
Created with CodeSandbox
Vue
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EMPLOYMENTS
Security Compliance Software Engineer Lead
Cisco
2024-01-01-Present

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.

PostgreSQL
Redis
Cursor
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PostgreSQL
Redis
Cursor
TypeScript
React
NestJS
Claude
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Founder, Software Engineer
Mynds IT
2014-01-01-Present

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.

HTML/CSS
PostgreSQL
Firebase
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HTML/CSS
PostgreSQL
Firebase
React
React Native
NestJS
Supabase
React (next.js)
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Senior Software Engineer
DrChrono
2024-02-01-2026-06-01

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.

Python
Django
React
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Python
Django
React
JavaScript
React Native
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PROJECTS
Travelix: Plan your tripsView Project
2023
Collaborative trip planning and expense tracking for friend groups. Travelix is where a friend group plans a trip and settles the tab: s...
Collaborative trip planning and expense tracking for friend groups. Travelix is where a friend group plans a trip and settles the tab: shared itineraries, expenses split as you go, and balances everyone can see. It shipped on Google Play first as a Flutter app with a Node.js and Firebase backend. Version 2 is a rewrite in React 19, Vite, and Tailwind wrapped with Capacitor, with a shared core package for the Firestore data layer so web and mobile share one codebase. AI now helps track expenses and plan the trip itself.
Node.js
Dart
TypeScript
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Node.js
Dart
TypeScript
React
Flutter
Cloud Firestore
Firebase Cloud Functions
Ionic capacitor
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Tone application
2022
Tone is a royalties platform that labels can love, its an application focused on music labels, it empowers them with their data and helps...
Tone is a royalties platform that labels can love, its an application focused on music labels, it empowers them with their data and helps them get the royalties paid on time to the artists under their contracts. I worked on the application behind tone, worked modifying and improving the notification system so our notifications to clients where more accurate, also implemented connections to payment providers such as Wise, got test coverage for several sections of the app up to 90%, and worked with the insights team on the coding and creation of dashboards to give our users insights on their data. As a side note, i also collaborated on non-dev tasks (mostly infrastructure) related to the deployment of their new website living at https://tone.is
Django
PostgreSQL
React
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Django
PostgreSQL
React
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