Salary: £117,000 - 130,000 per year Requirements: 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) Responsibilities: 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 More: 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. last updated 6 week of 2026