Application Support Engineer

Application Support Engineer

1 Day Per Month in London Bridge HQ + On-Call Allowance

Join Zempler Bank and help power the technology behind better business banking.

At Zempler Bank, we're on a mission to make banking simpler, smarter and more accessible for UK businesses. Technology sits at the heart of everything we do, and we're looking for an Application Support Engineer to join our expert 2nd Line Support team.

If you enjoy solving complex technical problems, investigating incidents, working across modern application ecosystems, and collaborating with talented engineers to keep critical services running smoothly, we'd love to hear from you.

What you'll be doing

As part of a small, highly skilled support team, you'll play a key role in maintaining the stability, performance and reliability of our banking applications.

You'll:

• Investigate and resolve application incidents and service requests within agreed SLAs.
• Lead and coordinate incident management activities, ensuring clear communication and timely resolution.
• Develop deep knowledge of our applications, databases, integrations and platform estate.
• Work closely with 3rd Line teams and external suppliers to diagnose and resolve complex technical issues.
• Provide technical support to clients and partners integrating with Zempler Bank services.
• Respond proactively to system alerts, identifying and mitigating service impacts.
• Support production deployments, change activities and post-release validation.
• Create and maintain runbooks, knowledge articles and support documentation.
• Drive service improvements, automation opportunities and operational efficiencies.
• Identify and escalate risks, SLA breaches and customer-impacting issues.
• Participate in an on-call rota supporting business-critical banking services.

What we're looking for

Essential

• Experience in an Application Support, Production Support or similar role.
• Experience supporting bespoke or custom-built applications.
• Strong SQL and relational database knowledge.
• Experience using PowerShell, SFTP and WinSCP.
• Ability to test and troubleshoot REST APIs and interpret application logs.
• Experience working with monitoring and observability tools such as Elastic, Site24x7 or API Metrics.
• Familiarity with at least one application development technology, such as Java, JavaScript, PHP or Python.
• Understanding of authentication and security protocols including OAuth, OpenID Connect and JWT.
• Experience using version control tools such as Git.
• Strong incident management and problem-solving skills.
• Excellent communication skills with the ability to translate technical issues for non-technical audiences.
• A collaborative approach and passion for delivering great service.

Nice to have

• Experience with Microsoft SQL Server and Windows Server environments.
• Experience within financial services or another regulated industry.
• ITIL knowledge or certification.
• Experience supporting external clients or technology partners.
• Exposure to payments, cards, online banking, mobile payments or Open Banking platforms.
• Experience operating in a fast-paced, high-growth environment.

We celebrate diversity

At Zempler Bank, we know that diverse teams build better products, make better decisions and create better experiences for our customers. We welcome applications from people of all backgrounds, experiences and identities.

Research shows that some people are less likely to apply unless they meet every requirement. If you're excited about this opportunity but don't tick every box, we'd still love to hear from you.