Senior Oracle Database Administrator

Mastercard; Waterloo; Sur place; EUR 90 000 - 120 000; Plein temps

Résumé du poste

Mastercard is seeking a Senior Database Engineer to own end-to-end administration and optimization of enterprise databases, focusing on Oracle and PostgreSQL, performance tuning, and high availability across a global tech landscape.

You will lead patching and upgrades, ensure security and governance, and collaborate with engineering, infrastructure, and business teams to translate requirements into scalable database solutions.

Qualifications

• Oracle and PostgreSQL database administration including patching and upgrades.
• SQL/PLSQL development, tuning, and DDL design.
• Linux/Unix environments, shell scripting, and automation.
• Backup, recovery, and replication technologies (RMAN, pg_dump).
• Database monitoring with Dynatrace and Splunk.
• Security concepts: users, roles, privileges, and compliance.
• Architecure, networking and high-availability design patterns.
• Cloud platforms and managed DB services.

Responsabilités

• Own end-to-end administration and optimization of enterprise databases.
• Lead patching, upgrades, and performance tuning.
• Ensure high availability, security, and governance compliance.
• Monitor, troubleshoot, and perform root-cause analysis of issues.
• Contribute to database architecture decisions and backup/recovery design.
• Collaborate with engineering and infrastructure teams to translate requirements.

Connaissances

Oracle DBA

PostgreSQL DBA

SQL/PLSQL

Linux/Unix

Backup & Recovery

Monitoring & Observability

Security & Compliance

HA & Replication

Cloud DB Administration

Outils

Dynatrace

Splunk

Description du poste

Title and Summary

Senior Database Engineer

Overview

We are seeking a Senior Database Administrator (Senior 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 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.