Application Support Specialist-Banking (L2 / IT Operations) M/F
Published on 04/11/2026
Tessero Luxembourg
Working time
Type of contract
Spoken languages
Professional experience
Educational level
We are looking for an experienced Application Support Specialist to join an Application Operations team within an international banking environment in Luxembourg.
The successful candidate will provide Level 2 support for locally and globally hosted applications, investigate production incidents and act as a key point of coordination between business users, internal technical teams, Level 3 support and external vendors.
The application landscape includes a Core Banking platform, payment applications and approximately 20 locally hosted business applications, with numerous interfaces to other systems and global environments.
This is a hands-on operational role requiring strong incident troubleshooting skills, banking awareness and the ability to understand dependencies between applications, jobs, interfaces and infrastructure components.
Your responsibilities
- Provide Level 2 application and production support for local and globally hosted banking applications.
- Own incidents from initial investigation through resolution or appropriate escalation.
- Analyse application incidents by reviewing logs, scheduled jobs, interfaces, file transfers and related application dependencies.
- Perform application-level troubleshooting, configuration and parameterisation where relevant, and escalate more complex issues to Level 3 support or external vendors.
- Support business-critical applications, including Core Banking and payment environments such as Avaloq and SWIFT.
- Investigate issues affecting payment processing and determine whether incidents originate from an application, scheduled job, interface, infrastructure component or external system.
- Coordinate effectively between business users, internal L3 teams, infrastructure teams and external application vendors until incidents are resolved.
- Manage and prioritise tickets according to their business impact and operational urgency.
- Work according to ITIL processes, including Incident Management, Problem Management, Service Request Fulfilment and Change Management.
- Support user access and ID administration, including requests related to applications and Active Directory.
- Contribute to the stability, security and robustness of application operations.
- Ensure operational controls are followed, including the 4-Eyes Principle and Segregation of Duties.
- Liaise with vendors and ensure incidents and requests are escalated with the appropriate technical and business information.
- Contribute to application releases and Disaster Recovery activities when required.
Your profile
- Strong professional experience in Application Support, Production Support or Application Operations, ideally at Level 2.
- Hands-on experience investigating and managing production incidents.
- Good practical understanding of ITIL processes, particularly Incident, Problem and Change Management.
- Ability to troubleshoot issues across interconnected applications and interfaces and identify where an issue is likely to originate.
- Experience coordinating with Level 3 teams, infrastructure teams and external vendors.
- Good understanding of how to prioritise incidents according to business impact.
- Experience within banking or financial services is highly desirable, particularly where business processes and application dependencies must be understood.
- Ability to communicate clearly with both technical teams and business users.
- Fluent English is required.
- Ability to work primarily on-site in Luxembourg and demonstrate flexibility when critical production incidents require support beyond standard working hours.
Nice to Have :
The following are strong advantages, but candidates are not expected to tick every box:
- Avaloq or another Core Banking System
- SWIFT or another banking/payment environment
- PowerShell, particularly for scripting or system integrations
- Understanding of APIs and interfaces between systems
- Active Directory
- Application access / identity administration
- Job schedulers and batch processing
- File transfer environments
- Log analysis and production troubleshooting
- Banking applications operating across complex front-to-back processes
- German language skills
What will make you successful
We are particularly interested in candidates who can approach an incident methodically.
For example, when a payment is not processed, you should be comfortable investigating whether the issue originates from the payment application, a scheduled job, logs, an interface, a file transfer, the Core Banking platform or another dependent system, before determining whether the issue can be resolved locally or needs to be escalated to the appropriate Level 3 team or vendor. This reflects the type of troubleshooting discussed directly by the client.
You do not need to be a software developer. However, you should have enough technical understanding to investigate an incident intelligently, identify the likely source of the issue and communicate effectively with specialist technical teams.
Location: Luxembourg
Contract: 6-month assignment, with potential extension
Working arrangement: Primarily on-site