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 Biz Ops Engineer:

Who is Mastercard?
Mastercard Technology connects and powers an inclusive digital economy, making transactions safe, simple, and accessible. Our innovations support individuals, financial institutions, governments, and businesses in realizing their potential. We foster a culture of inclusion, respect for diversity, and collaboration, believing that our differences make us a stronger team and drive better business results.

Technology at Mastercard:

We create technologies that shape the future of the digital economy more connected, secure, and sustainable. We seek talented technologists who thrive on the challenges of a global network, building critical systems and products that power commerce worldwide. Working at Mastercard means joining a unique, inclusive culture, collaborating across disciplines, and having the flexibility to shape your career.

About the Role:

The Biz Ops team is looking for a Senior Site Reliability Engineer (SRE). Biz Ops is responsible for production readiness of Mastercard products, ensuring platform stability and health. As an SRE, you will empower developers to build resilient products, support operational design, automation, capacity planning, and monitoring. You help set and enforce operational standards and foster an agile, learning culture.

Key Responsibilities:

• Ensure reliability, scalability, and performance of Mastercard applications.
• Support daily operations with a focus on triage, root cause analysis, and blameless post-mortems.
• Engage early in the development lifecycle to proactively manage production and change activities.
• Manage risk, compliance, and security across all environments.
• Align product and customer priorities with operational needs through continuous feedback.

About the Program You Support:

Mastercard Processing enables seamless, secure, and reliable payment transactions globally. It provides comprehensive solutions for transaction authorization, clearing, settlement, and fraud management, supporting various payment types and ensuring compliance with global and local regulations. With billions of transactions processed annually, the platform focuses on resilience, performance, and innovation, including real-time data insights and fraud prevention.

Required skills for candidates:

Operating Systems and Environment Management:

• Proficient in navigating Linux systems (CLI, directory structure, permissions).
• Process management (ps, kill, priorities, load analysis).
• Resource monitoring (CPU, RAM, I/O, disks) – tools like top, htop, vmstat, iostat.
• Basic Windows administration; knowledge of shell scripting (Bash, PowerShell).
• Ability to create scripts in Bash, Ansible, Python, or Perl.
• Experience managing Linux and Windows instances.
• Ability to create technical documentation.
• Previous experience in on-call rotation is appreciated.

Log Analysis and Processing:

• Skilled in searching and filtering (grep, awk, sed).
• Sorting, aggregation, and pipeline processing.
• Correlating events in application and system logs.

Networking and Protocols:

• Basic network traffic analysis (tcpdump, netstat).
• Understanding of TCP/IP, DNS, routing, firewalls, load balancers.
• Knowledge of protocols and API design patterns (TCP, HTTP, TLS, JSON, MTLS, o Auth2).
• High availability and resilience concepts (clustering, failover, scaling, load balancing).
• 1. Load Balancers
• Understanding F5 load balancers (GUI configuration, pools, members, vservers, monitors).
• 1. DevOps and CI/CD Tools
• Git – repository management, conflict resolution.
• Jenkins – running and modifying jobs.
• Ansible, Chef, Terraform – automation and provisioning.
• Splunk – data search and analysis.
• Familiarity with monitoring tools: Zabbix, Grafana, Dynatrace.
• Familiarity with documentation tools: Confluence.
• 1. Databases
• Ability to write PL/SQL queries (SELECT, JOIN, filtering).
• Experience with Oracle or Postgres databases.

Certificates and Security:

• Certificate management: issuance, renewal, keystore, truststore, bundle creation.
• Understanding of PKI.
• 1. Additional Competencies
• Ability to work independently and analytically.
• Problem-solving in production environments.
• Communication with development and operations teams.
• Basic ITIL exposure.

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.