Senior Site Reliability Engineer (Generalist)

Mastercard; Howth; On-site; EUR 100,000 - 150,000; Full time

Job summary

Mastercard is seeking a senior Site Reliability Engineer (SRE) – Generalist to lead reliability across complex, multi‑stack systems in Ireland. You will partner with application, platform, and infrastructure teams to reduce incident frequency, improve observability, and automate repeatable tasks.

You will mentor engineers, drive proactive reliability initiatives, and shape engineering decisions with a deep systems mindset.

Qualifications

• Strong ability to reason about systems end to end, connecting application behavior to infrastructure performance.
• Expertise in observability, monitoring, and troubleshooting with actionable insights.
• Proficiency in scripting and automation to operationalize reliability improvements.
• Broad infrastructure knowledge (networking, Linux, databases, containers, storage).
• Strong data analysis and storytelling skills for proactive risk identification.
• Familiarity with machine learning concepts applied to proactive ops.

Responsibilities

• Anticipate reliability risks by analyzing behavior, signals, and incidents to identify systemic weaknesses.
• Translate application knowledge into reliability requirements and infrastructure improvements.
• Continuously assess system health and drive improvements to increase service robustness.
• Lead troubleshooting during high-severity incidents and perform root cause analysis.
• Design and evolve observability strategies and build dashboards and monitors.
• Lead automation efforts to reduce manual work and improve tooling.
• Mentor engineers and influence design decisions with reliability in mind.

Skills

Systems thinking

Observability

Scripting

Automation

Distributed systems

Data storytelling

Machine learning concepts

Collaboration

Tools

Monitoring tools

Job description

Mastercard is seeking a senior Site Reliability Engineer (SRE) – Generalist to lead reliability across complex, multi‑stack systems in Ireland. You will partner with application, platform, and infrastructure teams to reduce incident frequency, improve observability, and automate repeatable tasks.

You will mentor engineers, drive proactive reliability initiatives, and shape engineering decisions with a deep systems mindset.