System Administrator Salary jobs in Northern Ireland

Discover your future at Citi

Working at Citi is far more than just a job. A career with us means joining a team of more than 230,000 dedicated people from around the globe. At Citi, you’ll have the opportunity to grow your career, give back to your community and make a real impact.

Job Overview

Engineer the future of global finance. At Citi, our Tech team doesn’t just support finance – we are helping to redefine it. Every day, $5 trillion crosses through our network. We do business in 180+ countries operating at a scale few can match. From deploying advanced AI to helping shape global markets, we build systems that matter. Look to join a team where your work helps influence economies, your ideas can drive innovation and outcomes, and your growth is backed by mentorship, continuous learning and flexibility with potential hybrid work opportunities. Help solve real-world challenges that touch millions and get the opportunity to build the future of finance with Citi Tech.

We are seeking a high-performing Application Support Senior Analyst to provide L2 production support for critical applications within our global environment. The role focuses on incident resolution, system monitoring, and operational stability, working closely with Tech Leads, development teams, and external vendors.

The ideal candidate will bring strong technical troubleshooting skills, operational discipline, and the ability to perform under pressure in a fast-paced environment.

Key Responsibilities:

Production Support & Incident Management

• Provide L2 support for business-critical applications (file transfer, batch processing, payments systems)

• Actively manage P1/P2 incidents, ensuring timely resolution and escalation where required

• Participate in incident bridges and provide clear status updates

• Ensure adherence to SLA/OLA targets

Monitoring & Operational Support

• Monitor application health and proactively identify issues

• Execute daily health checks and batch validations

• Support file transfer monitoring and reconciliation processes

• Perform initial impact assessment and recovery actions

Problem Management & Continuous Improvement

• Support Root Cause Analysis (RCA) for incidents

• Identify and flag recurring issues to Tech Leads

• Maintain runbooks, SOPs, and knowledge base articles

• Contribute to automation and monitoring improvements

Vendor & Stakeholder Interaction

• Coordinate with external vendors for issue resolution

• Liaise with internal technology, operations, and business teams

• Provide regular updates during incidents and service disruptions

Change & Release Support

• Support production deployments and change activities

• Perform post-release checks and validations

• Ensure minimal disruption during releases

Required Skills & Experience

Technical Skills

• Experience in Application / Production Support, with strong knowledge of:

  • Unix/Linux and/or Windows environments

  • SQL / database querying and troubleshooting

  • File transfer protocols (SFTP, batch jobs)

  • Scheduling tools (Autosys, Control-M or similar)

• Experience with monitoring tools (e.g., Splunk, AppDynamics)

Functional Skills

• Good understanding of incident management processes (ITIL)

• Strong troubleshooting and analytical skills

• Ability to prioritize and manage multiple issues under pressure

• Effective communication and coordination skills

Preferred

• Experience in Banking / Financial Services / Payments domain

• Exposure to high-volume transactional systems

• ITIL Foundation certification

What we’ll provide you:

By joining Citi, you will not only be part of a business casual workplace with a hybrid working model (up to 2 days working at home per week), but also receive a competitive base salary (which is annually reviewed), and enjoy a whole host of additional benefits such as:

• 27 days annual leave (plus bank holidays)

• A discretional annual performance related bonus

• Private Medical Care & Life Insurance

• Employee Assistance Program

• Pension Plan

• Paid Parental Leave

• Special discounts for employees, family, and friends

• Access to an array of learning and development resources

Alongside these benefits Citi is committed to ensuring our workplace is where everyone feels comfortable coming to work as their whole self, every day. We want the best talent around the world to be energized to join us, motivated to stay and empowered to thrive.

#LI-BH1a

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Job Family Group:

Technology

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Job Family:

Applications Support

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Time Type:

Full time

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Most Relevant Skills

Please see the requirements listed above.

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Other Relevant Skills

For complementary skills, please see above and/or contact the recruiter.

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Citi is an equal opportunity employer, and qualified candidates will receive consideration without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, disability, status as a protected veteran, or any other characteristic protected by law.