Open to opportunities

Igor Matheus

@igormatheus

Senior backend engineer building scalable, AI-enabled distributed systems and automating workflows to ship 0→1 products.

Brazil

Message

What I'm looking for

I’m looking to build and deploy AI-enabled backend systems that automate real workflows, improve performance, and ship 0→1 products—while collaborating closely with stakeholders and engineering teams.

I’m a Senior Backend & Forward Deployed Engineer with 10+ years scaling production systems across fintech, ERP, and healthcare AI. I specialize in Python (Django, FastAPI), distributed systems, and API integrations, with a strong 0→1 delivery mindset. I’ve also partnered directly with US and Canada clients, translating business needs into scalable solutions.

In recent roles, I automated healthcare RCM denial management, cutting manual work by ~80%, and improved critical financial platform performance by ~96% (2 min → 5s). I’ve delivered backend architecture for $4B+ transaction processing, led/mentored 6+ engineers, and accelerated ERP purchasing workflows by ~85% (7 days → 1 day) while streamlining device provisioning via Microsoft Graph (~97%).

Experience

Work history, roles, and key accomplishments

Current

Forward Deployed Engineer

Current

Thoughtful AI

May 2025 - Present (1 year)

Built and deployed AI agents for healthcare RCM workflows, automating denial management to cut manual processing time by ~80%. Integrated desktop apps, web systems, and APIs, and led/mentored 6+ engineers.

AI Agents Healthcare RCM Workflow Automation Python fastAPI System Design

Senior Software Engineer

Foxbox Digital

Nov 2021 - Apr 2025 (3 years 5 months)

Delivered 3+ end-to-end projects with direct client interaction and defined backend architecture for 0→1 system delivery. Improved critical financial platform performance by ~96% (2 min → 5s) and supported processing of $4B+ in transactions with complex rules.

Python Django fastAPI Microservices Distributed Systems REST APIs PostgreSQL Performance Optimization AWS System Architecture

Backend Engineer

Linker Bank

Jul 2021 - Nov 2021 (4 months)

Designed and implemented Open Finance APIs and integrations to enable secure connectivity with external financial partners. Built and maintained microservices for core banking features, authored API documentation to improve reliability, and resolved production issues to ensure system stability.

REST APIs Microservices API Documentation Production Support Python AWS Postman Swagger

Backend Engineer

Aptitude Technologies

Sep 2020 - Jun 2021 (9 months)

Automated device provisioning via Microsoft Graph, reducing setup time from ~3 hours to ~5 minutes (~97%). Delivered IT services and custom solutions for clients across the US and Canada.

Automation Backend Development Microservices Linux Python System Reliability IT Services

Backend Engineer

Flavors Of America

Jul 2019 - Sep 2020 (1 year 2 months)

Contributed to core ERP systems for a 400+ employee company operating in 10+ countries by designing and implementing a purchase approval workflow. Reduced procurement cycle time from ~7 days to ~1 day (~85%), implemented multi-company support across 10 countries, and customized Frappe/ERPNext modules for end-to-end processing.