Seeking a seasoned Lead Engineer - Systems to join our Application Support team as an L3 Engineer. This role involves end-to-end ownership of incident resolution, proactive problem management, and ensuring the reliability of critical systems. You will leverage deep technical expertise in databases, scripting, and cloud technologies to maintain high service levels and drive continuous improvement.

This position offers the opportunity to influence SRE practices, build robust automation, and enhance system observability. You will play a key role in defining and maintaining service level objectives and ensuring production readiness for new releases, contributing to a culture of operational excellence.

Manage and resolve incidents across all priority levels, conducting root cause analysis and implementing long-term problem management solutions.

Perform advanced diagnostics on MySQL, PostgreSQL, SQL Server, application logs, queues, and integration interfaces.

Develop new SQL and PowerShell scripts, along with conducting mid-level .NET log and code investigations.

Execute and validate patching, backup, and disaster recovery operations.

Mentor L2 engineers, maintain comprehensive runbooks, KEDB, and knowledge articles.

Serve as a Subject Matter Expert in domains such as Reporting, Clearing, Chargeback, Patching, Host Interface, or Message Processing.

Represent the support team in change reviews and post-incident reviews, driving preventative actions to completion.

Adhere to a shift-based coverage schedule, including on-call rotations, to ensure 24/7 system availability.

Possess deep hands-on experience with MySQL and PostgreSQL, and mid-level proficiency with SQL Server.

Demonstrate the ability to independently author new PowerShell and SQL scripts.

Exhibit mid-level expertise in .NET for code and log-level diagnostics.

Have experience with AWS services (ECS, EKS, RDS, CloudWatch), Coralogix, Grafana, PagerDuty, and Jira Service Management.

Be proficient in distributed tracing and metrics instrumentation using OpenTelemetry.

Understand the payments domain, including card issuing and processing, and familiarity with ISO 8583, ISO 20022, clearing and settlement, or chargebacks and disputes.

Possess working knowledge of PCI DSS and FCA operational resilience.

Apply ITIL-aligned principles for incident, problem, and change management.

Understand SRE practices including SLI/SLO definition, error budget tracking, toil reduction, and blameless postmortems.

Have experience with Infrastructure-as-code (Terraform/CloudFormation) and CI/CD pipelines for auditable operational changes.