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Maria Lobillo Santos

@marialobillosantos

Senior Backend Developer at DataTrace building Python/FastAPI semantic search and AI-powered document processing services.

Spain

Message

At DataTrace, I build event-driven document processing and AI-powered services for product teams. I developed a Python/FastAPI semantic search microservice that searches more than 10,000 documents with sub-second response times.

Previously, at Immense(Videoslots), I developed backend systems for a gaming platform with 99.999% uptime, including a Redis and RabbitMQ tournament registration system for more than 10,000 concurrent users. As a contractor, I built custom admin panels and management systems, and as a freelance Web Developer, I created WordPress themes and WooCommerce integrations.

Experience

Work history, roles, and key accomplishments

Current

Senior Backend Developer

Current

DataTrace

Jan 2023 - Present (3 years 9 months)

Independent contractor delivering end-to-end solutions for product teams across e-commerce, AI/SaaS, and digital media. Engineered event-driven document processing platforms and optimized REST APIs for performance.

Backend Developer

Immense(Videoslots)

Dec 2021 - Dec 2022 (1 year)

Engineered high-availability backend systems for a gaming platform processing millions in daily transactions with 99.999% uptime. Resolved critical security vulnerabilities and optimized SQL queries for performance.

JavaScript PHP Laravel Vue.Js Nginx MariaDB Redis RabbitMQ Elasticsearch WebSockets

Backend Developer

Contractor

Mar 2017 - Dec 2021 (4 years 9 months)

Architected and built custom admin panels and management systems using Laravel and Node.js/Express. Designed REST APIs and database schemas for case management platforms, reducing manual data entry by 60%.

JavaScript NodeJS ExpressJS PHP Laravel CakePHP CSS MySQL

Web Developer

Freelance

Jun 2012 - Feb 2017 (4 years 8 months)

Built custom WordPress solutions and e-commerce websites for small businesses. Developed over 15 custom WordPress themes and WooCommerce integrations, managing the full lifecycle from design to deployment.

JavaScript WordPress PHP MySQL CSS