OneMain Financial Jobs

Our Purpose

Mastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers, we’re helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments choices, making transactions secure, simple, smart and accessible. Our technology and innovation, partnerships and networks combine to deliver a unique set of products and services that help people, businesses and governments realize their greatest potential.

Title and Summary

Senior Cloud Platform Engineer

Overview

The Internal Cloud Platforms team is responsible for the daily maintenance, operation, and continuous improvement of multiple internal cloud platforms and their supporting services. Our engineers participate throughout the project lifecycle, ensuring that new infrastructure is designed with operational excellence in mind and ultimately assuming ownership of these environments.

The primary focus of this role is to respond to incidents quickly and effectively across cloud, PaaS, Cloud Foundry, and pipeline infrastructure. Additionally, the team proactively enhances platform resiliency by contributing to architectural improvements and automating repetitive processes.

Success in this role requires:

• Deep understanding of cloud and PaaS platforms

• Strong automation and coding skills to remediate recurring issues

• Solid knowledge of Continuous Delivery principles and infrastructure-as-code methodologies

• A hands-on approach to identifying, preventing, and resolving issues in complex infrastructure environments

If you enjoy replacing manual tasks with robust, code-driven solutions—and consistently steer your team toward the best solution rather than the easiest—this role is for you.

Role Responsibilities

• Design, implement, and maintain effective monitoring systems that minimize manual intervention in daily operations

• Respond to incidents across multiple platforms in a mission critical environment

• Participate in an on-call rotation, including evenings, weekends, and holidays based on team schedule

• Develop high quality, resilient automation and tooling to facilitate detection, self-healing, and recovery from common operational issues

• Create automation that enables first-level responders to resolve issues efficiently

• Write and maintain automation pipelines in Python using Concourse, supporting Cloud Foundry and other internal cloud platforms

Required Qualifications

• Minimum 5+ years of hands-on experience with Cloud Engineering Support, including deployment, operations, and troubleshooting

• Strong experience with Private Cloud environments and Infrastructure as Code (IaC) practices

• Ability to develop high quality automation in one or more languages (Python preferred)

• Experience with monitoring, alerting, and operational tooling. Grafana, Prometheus, and Splunk are a plus.

• Strong understanding of security best practices for cloud and PaaS platforms

• Experience writing Concourse pipelines in Python for Cloud Foundry support is desirable

• Familiarity with XML Gateways, API technologies, and F5 load balancers

• Experience with multiple cloud vendors

• Kubernetes certification (CKA / CKAD / CKS) is highly desirable

Corporate Security Responsibility

All activities involving access to Mastercard assets, information, and networks comes with an inherent risk to the organization and, therefore, it is expected that every person working for, or on behalf of, Mastercard is responsible for information security and must:

• Abide by Mastercard’s security policies and practices;

• Ensure the confidentiality and integrity of the information being accessed;

• Report any suspected information security violation or breach, and

• Complete all periodic mandatory security trainings in accordance with Mastercard’s guidelines.