Application Support Engineer

Job description

Application Support Engineer L2 Responsibilities • P1–P3 incident triage, known-error resolution, and SLA tracking (P1 restoration target 4 hours) • Log analysis and root cause investigation across distributed services, interfaces and message queues • Ticket enrichment and routing; escalate to L3 with a complete diagnostic picture • Adapt existing SQL and PowerShell scripts for diagnostics • Post-deployment validation and shift handover documentation • Contribute to runbooks and known-error records • Rostered 247365 shift cover and platform monitoring via Coralogix, CloudWatch, Grafana and PagerDuty Technical Skills • Coralogix, CloudWatch, Grafana, PagerDuty, Jira Service Management • SQL (MySQL / PostgreSQL / SQL Server) and PowerShell — adapt existing scripts • Application log analysis across distributed systems and message queues • ITIL-aligned incident and request management in a 247 environment • Working knowledge of PCI DSS controls and FCA operational resilience Good to Have: .NET exposure • AWS (ECS, EKS, RDS) • Confluence • Payments/fintech background Application Support Engineer — L3 Responsibilities • Own P1–P3 incident resolution, RCA, and problem management • Advanced diagnostics across MySQL, PostgreSQL, SQL Server, app logs, queues and integration interfaces • Author new SQL and PowerShell scripts; mid-level .NET log and code investigation • Patching, backup, and DR operations execution and validation • Coach L2 engineers; maintain runbooks, KEDB and knowledge articles • Hold SME ownership in one domain: Reporting / Clearing / Chargeback / Patching / Host interface / Message processing • Represent support in change reviews and post-incident reviews; drive preventative actions to closure • Day shift with on-call rota supporting 247 cover Technical Skills • MySQL, PostgreSQL — deep hands-on; SQL Server — mid-level • PowerShell and SQL — authoring new scripts independently • .NET — mid-level (code and log-level diagnostics) • AWS (ECS, EKS, RDS, CloudWatch); Coralogix, PagerDuty, Jira SM • Payments domain — card issuing and processing, plus one of ISO 8583 / ISO 20022, clearing and settlement, or chargebacks and disputes • PCI DSS and FCA operational resilience — working knowledge • ITIL-aligned incident, problem, and change management Good to Have: SRE practices (error budgets, toil reduction) • AI-assisted troubleshooting tooling in a controlled environment •  Confluence • Payments/fintech background