CV

Cássio Molin

What I’ve been doing to afford the camera gear.

Software engineer with 16+ years of experience building services and APIs with Java, Spring Boot, Kafka, Docker, and cloud technologies, along with Python for scripting and data processing. Recent work in fraud detection for healthcare and financial services.

Skilled in microservices, event-driven architectures, containers, REST APIs, API security with OAuth 2.0 and OpenID Connect, SQL and NoSQL databases, CI/CD, and responsible AI-assisted development with Claude Code and GitHub Copilot.

Experienced in leading teams, guiding technical decisions, shaping engineering practices, mentoring engineers, and working closely with product and business stakeholders. Long-time contributor to Stack Overflow, among the top 1,000 users globally.

January 2024 – Present

Lead Software Engineer

Contract
Optum · Dublin, Ireland
September 2022 – December 2023

Lead Software Engineer

Contract
Mastercard · Dublin, Ireland
November 2021 – September 2022

Senior Software Engineer

Contract
Optum · Dublin, Ireland
December 2019 – November 2021

Lead Software Engineer

Contract
AIB · Dublin, Ireland
October 2018 – November 2019

Senior Software Engineer

Contract
Mastercard · Dublin, Ireland
February 2018 – October 2018

Senior Software Engineer

Contract
Citi · Dublin, Ireland
March 2017 – February 2018

Senior Software Engineer

Contract
IDEMIA · Dublin, Ireland
July 2015 – February 2017

Senior Software Engineer

IBM · Dublin, Ireland
March 2010 – June 2015

Software Engineer

Keyworks Software · Caxias do Sul, Brazil
March 2009 – February 2010

Associate Software Engineer

Núcleo Sistemas · Caxias do Sul, Brazil