Mastercard
Waterloo, Belgium
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.
Senior Oracle Database Administrator
Overview
We are seeking a Senior Oracle Database Administrator (Senior Oracle DBA) with deep expertise in Oracle and PostgreSQL to lead the stability, performance, and evolution of enterprise database platforms. This role plays a critical part in ensuring database reliability, security, automation, and scalability across a complex, global technology landscape, while partnering closely with engineering, infrastructure, and business teams.
Role
As a Senior Oracle DBA, you will own the end‑to‑end administration, optimization, and operational excellence of enterprise database environments. You will lead database configuration, patching, upgrades, and performance tuning initiatives, ensuring high availability, resiliency, and compliance with security and governance standards.
You will proactively monitor database platforms, identify and resolve complex performance and stability issues, perform root cause analysis, and drive long‑term remediation and optimization strategies. You will play a senior role in database architecture decisions, backup and recovery design, replication strategies, and cloud‑based database administration.
This role requires close collaboration with application, infrastructure, and platform engineering teams to translate business and technical requirements into scalable database solutions. You will ensure adherence to change, incident, and problem management processes while continuously improving operational maturity.
In addition, you will champion database best practices, standards, and governance across the organization, contribute to process improvements, and provide technical leadership through mentoring and guidance of junior DBAs. Participation in an on‑call rotation, including after‑hours and weekend support, is required to ensure service continuity.
All About You
You are a seasoned database professional with extensive experience managing mission‑critical, enterprise‑scale database platforms. You bring strong hands‑on expertise in:
Oracle and PostgreSQL database administration, including configuration, patching, upgrades, and performance optimization
Advanced SQL and PL/SQL development, query tuning, and DDL design to support application and platform teams
Linux/Unix environments, shell scripting, and database automation using Shell, PL/SQL, and related tools
Backup, recovery, and replication technologies, including RMAN and pg_dump
Database monitoring and observability using tools such as Dynatrace and Splunk
Database security concepts, including users, roles, privileges, access controls, and compliance considerations
Database architecture, networking fundamentals, and high‑availability design patterns
Cloud platforms and managed database services, including cloud‑based administration concepts
You have strong performance tuning and troubleshooting skills, with the ability to diagnose complex issues, optimize queries and indexing strategies, and improve overall system efficiency. You are comfortable leading moderate to large database initiatives, planning complex technical efforts, and coordinating work across multiple teams.
You communicate effectively with both technical and non‑technical stakeholders, and you are confident advocating for database best practices, standards, and governance. You value high‑quality documentation and actively contribute to maintaining and enhancing DBA processes, runbooks, and operational guidelines.
You thrive in a global, collaborative environment, enjoy mentoring junior team members, and continuously look for opportunities to improve database reliability, scalability, and operational efficiency.
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: