Application Support Engineer: Reliability & API Ops

Barclays; Knutsford; On-site; GBP 45,000 - 65,000; Full time

Job summary

Barclays is seeking an Application Support Engineer to ensure the stability, availability, and performance of critical business applications in Knutsford. You will monitor and support production systems, investigate incidents, and collaborate with engineering to enhance reliability and resilience.

The role requires strong API experience, expertise with Oracle/MS SQL, Unix/Linux production administration, and familiarity with CI/CD and observability platforms such as Kibana and AppDynamics.

Qualifications

• Strong API knowledge from an application support perspective.
• Experience with Oracle/MS SQL including query analysis and troubleshooting.
• Strong Unix/Linux administration in production environments.
• Familiarity with CI/CD processes and GitLab pipelines, including release practices.
• Experience using Kibana, AppDynamics and other observability tools.

Responsibilities

• Monitor and support business-critical applications to ensure stability and performance.
• Investigate and resolve production incidents in line with ITIL processes.
• Work with engineering teams to improve reliability and operational resilience.
• Maintain knowledge base with documented resolved cases for self-service.
• Proactively tune monitoring tools, thresholds and alerts to minimize disruption.
• Assist in capacity planning, automation efforts and service improvement.
• Identify and remediate potential service-impacting risks and issues.

Skills

API knowledge

Oracle/MS SQL

Unix/Linux administration

CI/CD & GitLab

Observability tools

AWS knowledge

API management concepts

Tools

GitLab pipelines

Job description

Barclays is seeking an Application Support Engineer to ensure the stability, availability, and performance of critical business applications in Knutsford. You will monitor and support production systems, investigate incidents, and collaborate with engineering to enhance reliability and resilience.

The role requires strong API experience, expertise with Oracle/MS SQL, Unix/Linux production administration, and familiarity with CI/CD and observability platforms such as Kibana and AppDynamics.