Hi, I'm Marcelo Moreira.
Backend & Full-Stack Engineer
I build reliable software for real-world problems — from healthcare to inventory & billing, always focused on clean architecture and shipping end-to-end.
About
Backend and full-stack engineer with 7+ years delivering SaaS platforms and custom software as an independent contractor, across healthcare, workforce, inventory & billing, property-records, and events domains. I build production systems in JavaScript/Node.js (Express, NestJS) and PHP/Laravel — comfortable owning either stack end-to-end, from APIs on AWS with Docker through to Vue.js and React front ends. More recently, I've been integrating LLM-based automation (OpenAI, Anthropic) into production workflows. I care about clean architecture, testing, and shipping features end-to-end.
Skills
Backend
Frontend
Cloud & DevOps
Databases & Caching
AI / LLM
Testing & Security
Experience
Senior Full-Stack Engineer (Independent Contractor)
2020 — 2026
Long-term contractor building production SaaS and custom software across healthcare, workforce, inventory & billing, property-records, and events domains. Delivered a NestJS-based multitenant SaaS for inventory and billing, a clinic management system, a workforce time-and-attendance system, and a property-records platform with a client portal. Designed multitenant architecture on Docker and AWS, set up containerised CI/CD with GitHub Actions and Amazon ECR, built DevMind (an internal AI code-review platform), and coordinated a small engineering team as Product Owner.
Projects
DevMind
Internal AI code-review platform that automatically analyses every pull request and tracks a project's code-quality trends over time on a dashboard for the dev team.
Multitenant Inventory & Billing SaaS
NestJS-based multitenant SaaS for inventory management and client billing/invoicing, in production since launch, serving multiple client organisations from a single codebase.
Property-Records Platform
Node.js/Express backend for land-registry and deed lookups, including a client portal giving each customer private, scoped access to their own property records.
Finance-Agent AI
AI-powered expense processing system that extracts, matches, and reconciles bank transactions automatically. Currently in active development.
Let's talk
Open to new opportunities and interesting projects. Reach out through any of the channels below.
marcelom.developer@gmail.com