Application Support Specialist

JSS; Greater London; On-site; GBP 45,000 - 65,000; Full time

Job summary

JSS is seeking an Application Support specialist in the UK to maintain and support core banking applications and systems. You will resolve incidents, manage problems to ITIL standards, and assist in designing and implementing new systems with senior technical leadership.

The role includes a mix of hands-on troubleshooting, vendor liaison, and participation in change projects as the function shifts toward more proactive monitoring. Customer outcomes and regulatory conduct are central to the role.

Qualifications

• Experience in application support within Financial Services, ideally banking
• Knowledge of banking platforms and their security/assurance requirements
• Experience supporting enterprise applications on Linux, with database and middleware platforms
• Confidence managing third-party vendor relationships against SLAs
• Familiarity with UK payment schemes and payment technologies
• Experience within ITIL and information security management frameworks
• Experience with enterprise monitoring/alerting tools
• Ability to write SQL queries, stored procedures, and reports
• Experience configuring Single Sign-On solutions
• Strong experience with an enterprise IT service management platform (change, incident, problem, and asset management)

Responsibilities

• Resolve incidents and requests within SLA
• Manage problems using an ITIL-aligned approach
• Identify and mitigate technology risks
• Maintain documentation and knowledge articles supporting information security and compliance standards
• Perform regular health checks on critical services
• Remediate vulnerabilities from security testing and scanning
• Build out proactive monitoring and alerting
• Share knowledge and coach colleagues across the wider IT function

Skills

FS application support

Banking platforms knowledge

Linux apps with DB/middleware

Vendor management (SLA)

UK payment schemes

ITIL & InfoSec frameworks

Monitoring/alerting tools

SQL queries & stored procedures

SSO configuration

ITSM platform (change/incident/problem

Tools

Linux

SQL

Job description

An Application Support specialist is required by a well-established mid-tier bank to support their core banking applications and systems. They are a long-standing UK bank offering private and commercial banking, wealth planning, and investment management, built on relationship-led service backed by modern technology.

The Role

You'll support their core banking applications and systems, resolving incidents and problems that affect the services the business relies on, and help design and implement new systems alongside senior technical leadership. The team is split across an Application Support function and two specialist support teams. Expect a mix of roughly half hands-on troubleshooting, a third working with external technology suppliers, and the remainder supporting change projects — currently weighted toward reactive work, with an ongoing shift toward more proactive monitoring.

Customer outcomes and regulatory conduct standards sit at the centre of the role.

Key Responsibilities

• Resolve incidents and requests within SLA
• Manage problems using an ITIL-aligned approach
• Identify and mitigate technology risks
• Maintain documentation and knowledge articles supporting information security and compliance standards
• Perform regular health checks on critical services
• Remediate vulnerabilities from security testing and scanning
• Build out proactive monitoring and alerting
• Share knowledge and coach colleagues across the wider IT function

Requirements

• Experience in application support within Financial Services, ideally banking
• Knowledge of banking platforms and their security/assurance requirements
• Experience supporting enterprise applications on Linux, with database and middleware platforms
• Confidence managing third-party vendor relationships against SLAs
• Familiarity with UK payment schemes and payment technologies
• Experience within ITIL and information security management frameworks
• Experience with enterprise monitoring/alerting tools
• Ability to write SQL queries, stored procedures, and reports
• Experience configuring Single Sign-On solutions
• Strong experience with an enterprise IT service management platform (change, incident, problem, and asset management)

You must be

• Change-focused with sound judgement and strong problem-solving skills
• A strong team player, equally effective working independently
• Organised, with good planning skills

This is an excellent opportunity to join an established player that is going through an exciting transformation.