Application Support Specialist - Banking / Production Support L2
Veröffentlicht am 11/11/2026
Tessero Luxembourg
Location: Luxembourg
Contract: 6-month assignment, with potential extension
Working arrangement: Primarily on-site
Start: ASAP
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The opportunity
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We are looking for an experienced Application Support / Production Support Specialist to join the Application Operations team of an international banking environment in Luxembourg.
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This is a hands-on Level 2 Application Support position, focused on the stability and operation of business-critical banking applications.
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This is not a Service Desk, Desktop Support or end-user support role.
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The successful candidate will investigate production incidents, analyse application dependencies and act as a key point of coordination between business users, L3 teams, infrastructure teams and external vendors.
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The environment includes Core Banking, payment applications, locally hosted business applications and global applications, connected through numerous interfaces and technical dependencies.
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We are looking for someone who can become operational quickly and independently investigate an incident before escalating it.
Your responsibilities
- Provide L2 Application and Production Support for business-critical banking applications.
- Take ownership of production incidents from initial investigation through to resolution.
- Analyse application logs, scheduled jobs, batches, interfaces, file transfers and system dependencies.
- Identify the likely source of an incident across interconnected applications and infrastructure components.
- Perform application troubleshooting, configuration, parameterisation, restarts or reprocessing where appropriate.
- Support environments including Core Banking and payment applications.
- Coordinate incident resolution with L3, infrastructure, database, middleware and external vendor teams.
- Prioritise incidents according to business impact and operational urgency.
- Work according to ITIL processes, particularly Incident, Problem and Change Management.
- Support application access and identity-administration activities.
- Contribute to releases, production validation and Disaster Recovery activities.
- Ensure operational controls including the 4-Eyes Principle and Segregation of Duties are respected.
Your profile
- 4+ years of hands-on experience in Application Support, Production Support or Application Operations.
- Strong experience investigating production incidents on business applications.
- Previous experience supporting business-critical applications within banking or financial services is strongly preferred.
- Hands-on troubleshooting experience involving several of the following:
- application logs;
- scheduled jobs / batch processing;
- interfaces and application dependencies;
- SQL / database checks;
- APIs;
- file transfers / SFTP / MFT;
- monitoring tools.
- Good practical knowledge of Incident, Problem and Change Management.
- Ability to determine whether an incident can be resolved at L2 or requires escalation to L3, infrastructure or a vendor.
- Experience coordinating technical teams and external providers through to service restoration.
- Ability to understand the business impact of a production incident, especially in a banking environment.
- Fluent English is required.
- Ability to work primarily on-site in Luxembourg.
- Flexibility to support occasional critical incidents, releases or Disaster Recovery activities outside standard working hours.
Strong advantages
Experience with any of the following would be highly valued:
- SWIFT / payment applications
- Avaloq or another Core Banking System
- PowerShell or other scripting technologies
- REST APIs and application interfaces
- SQL
- Active Directory and access administration
- ServiceNow
- Job schedulers / batch-processing tools
- SFTP / MFT
- Linux / Unix
- Monitoring and log-analysis tools
- German language skills
Candidates are not expected to have experience with every technology listed above.
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What we are looking for
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The key requirement is the ability to troubleshoot production incidents methodically and independently.
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For example, if a banking payment is not processed correctly, you should be comfortable investigating whether the issue originates from:
the application → logs → scheduled job/batch → interface → file transfer → Core Banking platform → infrastructure or another dependent system
before determining whether the issue can be resolved directly or requires escalation to the appropriate L3 team or vendor.
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You do not need to be a software developer, but you should be technically comfortable enough to investigate, isolate and explain a production issue before escalating it.