Lead Site Reliability Engineer-2

Mastercard; O’Fallon (MO); On-site; USD 122,000 - 207,000; Full time

Job summary

Mastercard is seeking a Lead Site Reliability Engineer-2 to oversee the reliability, scalability, and performance of Mastercard’s Java and Spring applications. You will mentor engineers, automate deployments, and maintain production readiness across the platform, collaborating with Biz Ops and cross‑functional teams in a fast‑paced environment.

This full‑time, on‑site role is based in O’Fallon, MO. The ideal candidate has strong Java/Spring, Python or Go skills, deep DevOps experience, and a

Qualifications

• BS in Computer Science or related field.
• Proficiency in Java, Spring Framework, Python, or Go.
• Strong DevOps and configuration management skills.
• Experience with distributed systems and automation.
• Problem-solving, communication, and leadership abilities.
• Passion for observability and continuous improvement.

Responsibilities

• Mentor junior engineers and grow team capabilities.
• Automate deployments and streamline CI/CD pipelines.
• Maintain production readiness across Mastercard’s platform.
• Collaborate across teams to improve reliability and scalability.

Skills

Java

Spring Framework

Python

Go

DevOps

Distributed systems

Automation

Observability

Leadership

Communication

Education

BS in Computer Science or related field

Job description

Lead Site Reliability Engineer-2

Overview

Mastercard powers economies and empowers people in 200+ countries and territories worldwide. We help build a sustainable economy where everyone can prosper, delivering secure, simple, smart, and accessible digital payments solutions that enable individuals, businesses, and governments to realize their greatest potential.

Role

The Business Operations (Biz Ops) team seeks a highly‑motivated Lead Site Reliability Engineer to ensure the reliability, scalability, and performance of Mastercard’s Java and Spring Framework applications. You will mentor junior engineers, automate deployments, and maintain production readiness across the platform.

All About You – Team Specific Skills

• Operational Readiness Architect – ensure application health, performance, and capacity; support pre‑launch activities.
• Site Reliability Engineering – design resilient infrastructure, perform root cause analysis, and automate alerts.
• DevOps/Automation – improve service lifecycle, support CI/CD pipelines, and reduce manual intervention.
• ITSM Practices – analyze platform activities and provide feedback to development teams.

Qualifications

• BS in Computer Science or related field.
• Proficiency in Java, Spring Framework, Python, or Go.
• Strong DevOps and configuration management skills.
• Experience with distributed systems and automation.
• Problem‑solving, communication, and leadership abilities.
• Passion for observability and continuous improvement.
• Willingness to learn and collaborate across teams.

Mastercard is a merit‑based, inclusive, equal opportunity employer that considers applicants without regard to gender, gender identity, sexual orientation, race, ethnicity, disability, veteran status, or any other characteristic protected by law. In the US or Canada, if you require accommodations or assistance to complete the online application process or during the recruitment process, please contact [e-mail] and identify the type of accommodation or assistance you are requesting. Do not include any medical or health information in this email. The Reasonable Accommodations team will respond to your email promptly.

Corporate Security Responsibility

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

Benefits

For full‑time employees (and certain part‑time employees) benefits generally include medical, prescription drug, dental, vision, disability, and life insurance; flexible spending account and health savings account; paid leaves, including 16 weeks of new parent leave and up to 20 days of bereavement leave; 80 hours of Paid Sick and Safe Time, 25 days of vacation time and 5 personal days prorated based on the date of hire; 10 annual paid U.S. observed holidays; 401(k) with a company match; deferred compensation for eligible roles; fitness reimbursement or on‑site fitness facilities; tuition reimbursement; and more. Interns receive 56 hours of Paid Sick and Safe Time, jury duty leave, and on‑site fitness facilities in some locations.

Pay Ranges

O’Fallon, Missouri: $122,000 - $207,000 USD