Machine Learning Engineer

Posted:
5/12/2026, 12:18:04 AM

Location(s):
São Paulo, Brazil

Experience Level(s):
Junior ⋅ Mid Level ⋅ Senior

Field(s):
AI & Machine Learning ⋅ Software Engineering

Workplace Type:
Remote

About the Role

At CloudWalk, our Security team doesn’t just react to threats; we engineer systems that anticipate and neutralize them before they ever reach our infrastructure. We are looking for a Machine Learning Engineer to build the intelligence layer of our edge defenses. You won’t just be tuning standard WAF rules or analyzing logs after the fact. You will design, train, and deploy machine learning models directly at the edge to detect anomalies, thwart intrusions, and block sophisticated attacks in real time.You will bridge the gap between security intelligence and massive-scale data science, turning raw network traffic into a proactive defense mechanism. You'll work alongside red teamers and security engineers, using their attack data to train models that make those exact attack classes obsolete. If you enjoy solving hard scaling problems, weaponizing AI for defense, and protecting billions of transactions, this role is for you.
Join us at CloudWalk, where we're not just engineering solutions; we're building a smarter, AI-driven future for payments and credit— together. 

CloudWalk

Website: https://www.cloudwalk.io/

Headquarter Location: São Paulo, Sao Paulo, Brazil

Employee Count: 251-500

Year Founded: 2013

IPO Status: Private

Last Funding Type: Series C

Industries: Credit Cards ⋅ Financial Services ⋅ Point of Sale ⋅ Virtual Currency