Gerardo Manuel Reyes Fernández

Senior Full-Stack Engineer & Forward Deployment Engineer

Mexico City, Mexico | contact@gerardo-reyes.site | LinkedIn | GitHub | Blog

Professional Summary

Senior Full-Stack Engineer & Forward Deployment Engineer with 8+ years building scalable web applications in fintech, healthcare, and enterprise retail. Led 4 major Angular migrations (v8→v18) and architected microfrontend systems serving millions of users. Specialist in edge platform deployments (Cloudflare, Workers, R2) and serverless architectures. Proven technical consultant and mentor with international impact across Mexico, Chile, and Peru. Track record of reducing build times by 75% and improving Core Web Vitals by 57%. Currently building multi-tenant SaaS platforms and integrating AI tooling (Claude, Codex, NotebookLM) to accelerate development and research cycles.

Technical Skills

Frontend: Angular (8-19), React 19, Next.js 15 (SSG/CSR), Vue 3, TypeScript, JavaScript ES6+, RxJS, NgRx, Redux, HTML5, CSS3, Sass, Tailwind

Backend: Node.js, NestJS, .NET/C#, Spring Boot, Go, REST APIs, GraphQL, Socket.IO, WebSockets, JWT, OAuth 2.0, SSO

Databases & Cloud: MySQL, PostgreSQL, MongoDB, Firebase/Firestore, Redis, Google Cloud Platform, AWS, Docker, Dokploy, Traefik

Architecture & Tools: Nx Monorepos, Microfrontends, Multi-tenant SaaS, Git, Jenkins, CI/CD, SonarQube, Fortify, OWASP, WCAG, Agile/Scrum

AI & Productivity: Claude, Claude Code, GitHub Copilot, Codex, Gemini, ChatGPT, NotebookLM, Mistral, Prompt Engineering

Professional Experience

Senior Software Engineer, System Architect & Forward Deployment Engineer

Tech Blog – Astro Edge Platform | May 2026

• Migrated editorial architecture from AWS to Cloudflare’s free tier; high-availability for 15,000+ daily visits at $0 OPEX, with serverless analytics on Cloudflare Workers + D1 (SQLite)
• Authored a custom HAST compiler plugin (rehypeMermaidTabs) for build-time Mermaid; hit sub-500ms FCP/LCP in Astro 6 with layered JSON-LD (Person, WebSite, TechArticle) for SEO
• Used Claude Code as an AI copilot across the full development and planning lifecycle — architecture, implementation, and refactoring

Software Architect, Lead Developer & Forward Deployment Engineer

Gerard Reyes Music – Secure Edge Audio Platform | Apr 2026 – Present

• Deployed a Next.js 14 (App Router) music platform on Cloudflare Workers via OpenNextJS with hybrid SSG/SSR; secured audio with private R2 + S3-compatible pre-signed URLs (300s TTL)
• Isolated a decoupled signing microservice for credential rotation; HTML5 Range streaming (HTTP 206), persistent global player (React Context) with synced lyrics and feature-flag rollouts
• Used Claude Code as an AI copilot across the full development and planning lifecycle — architecture, implementation, and refactoring

Full Stack & AI Engineer

DC Vent – Fintech | Nov 2025 – Dec 2025

• Delivered complete MVP in 3 weeks using React, Vue.js, Node.js, and .NET with Clean Architecture
• Implemented SSO token exchange system and RBAC module with granular permissions
• Designed MySQL schema; built REST APIs with .NET and dynamic reporting with XLSX export
• Drove the full development and planning lifecycle with AI copilots (Claude Code, Codex, Gemini CLI), enabling the sub-3-week delivery

Technical Founder & Full Stack Engineer

Live Restaurant – Real-Time Karaoke & Valet Parking SaaS | Sep 2025 – Present

• Designed production-ready multi-tenant SaaS architecture supporting 64-68 tenants on single server
• Built monorepo (frontend/backend/shared) with Next.js 15, React 19, dedicated Socket.IO server architected for 3,600+ concurrent WebSocket connections
• Implemented dynamic tenant configuration, LRU caching, compound MongoDB indexes targeting <50ms API response; hardened with hashed URLs, XSS sanitization, and dynamic QR code generation
• Deployed infrastructure with Dokploy + Traefik (4 API containers, round-robin load balancing, rolling updates); AI-assisted workflow (Claude Code, Codex, Gemini)

Software Architect & Lead Developer

Professional Identity Platform – Headless CMS & Portfolio | May 2020 – Present

• Architected a Headless CMS for professional identity; orchestrated Angular → Next.js 15 migration with SSG for radical mobile LCP reduction
• Designed a $0-OPEX hybrid topology (Cloudflare Edge Proxy + WAF, Firebase Hosting); Firestore persistence validated with Zod, bilingual i18n via DeepL API
• Integrated a Mistral AI chatbot (chosen on privacy/inference/cost) within a two-layer AI workflow: architectural debate (Gemini) + assisted execution (Claude); since October 2025, driving development and planning with Claude Code as primary AI copilot

Full Stack Engineer

Freelance – Attendance & Payments Platform | Feb 2025 – Jun 2025

• Architected attendance management and payment processing platform using Angular and Firebase
• Led Angular 16→18 migration; implemented advanced reporting and intelligent tagging for collections

Full Stack Engineer

Cognizant – EHealth – Healthcare | Jul 2024 – Dec 2024

• Developed medical plan recommendation engine using Vue.js and GraphQL with pixel-perfect Figma implementations
• Maintained 90%+ unit test coverage; delivered WCAG-compliant, accessible interfaces

Senior Frontend Engineer

Cognizant – Equifax – Insurance | Aug 2022 – Jul 2024

• Led Angular 12→16 and Nx 13→17 migrations; improved LCP from 4.2s to 1.8s (57% faster)
• Served as technical consultant to Tech Lead: provided architecture proposals to improve velocity and scalability
• Resolved 50+ Fortify/Twistlock security vulnerabilities; enforced OWASP/WCAG standards across 200k+ LOC
• Mentored team members and conducted code reviews, contributing to contract extension from 6 months to 2 years
• Reduced build time from 12 min to 3 min (75% improvement) through architecture optimizations

Frontend Lead

Cognizant-Softvision – Walmart Kalos – Enterprise Retail | Oct 2021 – Jun 2022

• Led frontend team of 8 engineers; executed Angular/NgRx v8→v13 migration reducing state bugs by 60%
• Built reusable component library with Angular Material; accelerated feature delivery by 35%

Senior Frontend Engineer

Equifax – Cyber Division – Banking (MEX/CL/Peru) | Feb 2020 – Jul 2021

• Part of the team that planned the migration from ActionScript to Angular for multi-client platform
• Initially mentored specific Angular team, then scaled to mentoring dozens of developers across Mexico, Chile, and Peru
• Provided architecture consulting for cloud applications with Angular 8-12

Frontend Engineer

Indra – Santander Bank – Banking | May 2019 – Nov 2019

• Developed complex banking forms with Angular Reactive Forms and RxJS; ensured financial security compliance

Full Stack Engineer

Concrad, Clinica-Relox, UNAM | Oct 2017 – Jan 2019

• Built ERP systems (inventory, sales, HR) and healthcare platforms using Angular, Node.js, MySQL, PostgreSQL

Certifications & Continuous Learning

80+ verified certifications across Udemy, Platzi, LinkedIn Learning, and Pluralsight — Angular, React, Vue, RxJS, NgRx, NestJS, Go, .NET, Docker, Claude Code, Prompt Engineering, System Design.

Languages

Spanish: Native | English: Professional Working Proficiency (B2-C1)