Miami-Fort Lauderdale Area
Senior Full-Stack Engineer and SaaS Architect with over 15 years of experience building, scaling, and maintaining production-grade web applications. Specializing in end-to-end product implementation, high-performance API design, and executing risk-managed architectural migrations from legacy systems to modern, type-safe environments without disrupting live operations. Highly self-sufficient individual contributor with a proven ability to bridge the gap between technical execution and business requirements, ensuring optimal system uptime, data security, and scalable infrastructure. Core Technical Proficiencies: Languages: JavaScript (ES6+), TypeScript, SQL, HTML5, CSS3, PHP (Legacy) Frontend Frameworks: Vue.js, Vite, Vuetify, Tailwind CSS, Bootstrap, jQuery Backend & APIs: Node.js, Fastify, Express, RESTful APIs, Service-Oriented Architecture (SOA) Databases & Storage: MySQL, MariaDB, Relational Database Design, Query Optimization DevOps & Cloud Infrastructure: Docker, Docker Compose, CI/CD (GitHub Actions), Linux Security & Methods: Secure Token Authentication (OAuth2/JWT), Git, Cursor Based in the Miami-Fort Lauderdale area. US Permanent Resident (Work Authorized – No Sponsorship Required). Open to Senior Full-Stack, Backend, or Technical Lead opportunities (W2 or 1099 contracts).
Engineered and operated a secure, multi-tenant B2B SaaS accounting and P&L management platform built from bare metal to support an active commercial subscriber base. Built and scaled the entire platform architecture from scratch as the solo technical owner, ensuring 24/7 production availability and seamless feature delivery. Engineered a highly responsive frontend using Vue.js paired with a high-performance Node.js/Fastify backend API layer. Designed and optimized relational MariaDB schema, implementing advanced indexing strategies that significantly reduced complex query execution times. Implemented strict, enterprise-grade security protocols, including secure token-based authentication (JWT) and PCI-compliant third-party payment and billing integrations. Containerized the complete application environment using Docker and Docker Compose, establishing reliable, self-contained local and production infrastructure.
Spearheaded the architectural migration of a complex legacy codebase (Cake Php) toward a modern, modular, and service-oriented structure (Node.js). Designed and implemented reusable, performance-optimized frontend UI components using Vue.js, Vite, and Tailwind CSS. Collaborated on robust backend REST API design in Node.js, integrating secure OAuth2 and JWT authentication layers to protect sensitive B2B client data. Review and normalize full Mysql database, indexes, queries optimizations to reduce delay from more than 10s to 500 ms
- Developed business applications using PHP/MySQL - Managed Linux-based infrastructure and deployments - Built accounting and invoicing systems for internal operations Designed, engineered, and maintained custom internal ERP, inventory, and automated billing software using a PHP and MySQL stack to support an organization generating €2M in annual revenue. Managed all local server infrastructure (in house), database administration, system configuration, and data backups. Directed a technical and production team of 4, managing tight, high-pressure production deadlines and ensuring strict quality control compliance.