Application Support Engineer (2nd Level)

About Global Blue by Shift4

Global Blue by Shift4 is the worldwide leader in Tax Free Shopping solutions. We connect shoppers, retailers, and brands across the globe, supporting more than 40 million transactions every year.

As part of our Backoffice IT Operations team, you'll help ensure our business-critical applications remain reliable, stable, and available for customers worldwide.

About the Role

We're looking for an experienced Application Support Engineer who enjoys solving production issues, improving system reliability, and working closely with live business applications.

This is a hands-on operational role focused on application support, incident management, troubleshooting, monitoring, and continuous improvement.

You'll work with modern technologies including .NET, MSSQL, Kubernetes, RabbitMQ, Splunk, Jenkins, and REST APIs, helping keep our production environments running smoothly and efficiently.

If you enjoy investigating complex issues, finding root causes, and improving operational excellence, we'd love to hear from you.

What You'll Do:

• Provide 2nd level support for business-critical applications.
• Troubleshoot production issues using logs, dashboards, metrics, and monitoring tools.
• Investigate application, API, database, and messaging-related incidents.
• Support Kubernetes workloads and diagnose operational issues.
• Analyze RabbitMQ message flows, retries, queues, and failures.
• Perform SQL investigations, data validation, and troubleshooting.
• Participate in incident response and root cause analysis.
• Improve monitoring, alerting, and observability.
• Create and maintain support documentation, SOPs, and runbooks.
• Automate repetitive operational tasks using PowerShell and Bash.
• Work closely with Development, QA, DevOps, and Product teams.
• Support production releases and operational readiness activities.
• Participate in on-call support rotations when required.

What We're Looking For:

Experience

• 5+ years of Application Support, Production Support, or IT Operations experience.
• Experience supporting production applications in a complex environment.
• Strong troubleshooting and analytical skills.
• Experience working within Agile teams.
• Good understanding of service management and incident management processes.
• Strong communication skills in English.

Technical Skills

• PowerShell and Bash scripting.
• MSSQL and SQL troubleshooting.
• REST APIs and Postman.
• .NET application support and diagnostics.
• RabbitMQ troubleshooting.
• Splunk log analysis and dashboarding.
• Kubernetes fundamentals.
• CI/CD concepts and deployment troubleshooting.
• Jenkins or similar deployment tools.
• Jira, ServiceNow, Xurrent, or similar ticketing systems.
• Active Directory and Windows Server administration.
• Basic JavaScript and browser debugging tools.

Nice to Have

• ITIL Foundation certification.
• Experience in financial services or PCI-DSS environments.
• Knowledge of OWASP, OIDC, and OAuth2.
• Experience working with observability and monitoring platforms.

Who Will Thrive in This Role:

This role is ideal for professionals who enjoy:

• Troubleshooting and resolving production issues.
• Working with live systems and operational environments.
• Incident management and root cause analysis.
• System reliability and operational excellence.
• Monitoring, observability, and automation.
• Owning problems from investigation through resolution.

This is an Application Support and Operations role, not a software development position. While development knowledge is valuable, the primary focus is ensuring the reliability, performance, and stability of production applications.

Location:

• Be currently located in Hungary and legally authorized to work in Hungary.
• Be available to work in a hybrid model, attending our Vienna office two times per month.

Why Join Us?

• Work for a global technology leader.
• Be part of a collaborative international team.
• Grow your career in a modern technology environment.
• Flexible and Agile ways of working.
• Employee referral program.
• Team events and social activities.
• Opportunities for continuous learning and development.

Ready to Make an Impact?

If you're passionate about application support, operational excellence, and keeping business-critical systems running at their best, we'd love to hear from you.

Apply now and join Global Blue by Shift4.