L3 Support Engineer

• Provide advanced L3 support for .Net and JavaScript-based applications
• Perform deep-dive analysis and resolve complex incidents within SLA
• Debug code-level issues and collaborate with engineering teams for permanent fixes
• Drive systemic improvements and performance optimization
• Support releases, UAT, and go-lives while maintaining change quality and documentation
• Partner with upstream and downstream teams to ensure service continuity

Technologies:

• API
• AWS
• Azure
• C#
• Cloud
• ELK
• Grafana
• Support
• ITIL
• ITSM
• JIRA
• JavaScript
• Kotlin
• PowerShell
• Python
• REST
• SOAP
• SQL
• ServiceNow
• Splunk
• Swift
• Vue
• Web
• microservices
• ASP.NET, We are a dynamic team in the UK offering contracting opportunities for a Level 3 Support Engineer specializing in .Net technology within the retail domain. Our office-based role in Livingston allows for collaboration with various teams to optimize and support critical applications. We value a proactive approach to problem-solving and encourage continuous improvement within our processes. Join us to make a significant impact in our operations, backed by a strong support structure and opportunities for professional growth.

• Experience with .Net (C#, VB.Net), VB6, and JavaScript / Vue.js across the application lifecycle
• Proficiency with T-SQL and DocumentDB
• Knowledge of Swift and Kotlin
• Advanced SQL troubleshooting and tuning; data-model fluency for application triage
• Experience with REST API integration and debugging
• Scripting skills in PowerShell/Shell for automation and health-check/reporting
• Familiarity with observability tools such as Splunk/ELK and Grafana
• Experience with ITSM tools such as ServiceNow / Jira; adherence to SLA / OLA
• Knowledge of daily/shift health checks, exception queues, dashboards, runbooks, and KEDB
• Skills in application error triage and recovery, data mismatches, and API failures
• Experience in change management, including UAT, release notes, and SOP/runbook updates
• Proven ability to resolve repeat failures and drive optimization in processes
• Background in the retail domain (desirable)
• Experience with cloud-native .Net applications (Azure / AWS) (desirable)
• Understanding of web services (SOAP / REST) and microservices architecture (desirable)
• Automation mindset with tools like PowerShell or Python (desirable)
• ITIL Foundation certification (desirable)
• Familiarity with batch schedulers and cloud logging / monitoring (desirable)