Job Title: Windows Support Engineer – Windows COTS & Integrations
Location: Canary Wharf, UK
Department: Application Platform Operations / Application Services
Purpose of the Role : To ensure the reliable operation, maintenance, and upgrade of Windows-based COTS software, as well as to manage integrations with identity/authentication systems (e.g. Okta), IIS web servers, and supporting scripting to automate, monitor, and troubleshoot these systems. You will work as part of our Application Support / Platform Operations team, ensuring minimal downtime, rapid resolution of defects, continuous improvement, and adherence to internal, regulatory, and security standards.
Key Responsibilities:
* Support, maintain, and upgrade Windows-hosted COTS applications in production, UAT, development environments; coordinate patching, version upgrades, vendor interactions.
* Manage integrations with identity and access management platforms (Okta or similar), including Single Sign-On (SSO), user provisioning, attribute mapping, and ensuring secure authentication flows.
* Operate and maintain IIS web servers (configuration, SSL certificates, bindings, application pools, security hardening).
* Develop, maintain, and execute scripts (PowerShell, batch scripting, possibly Python) for automation (deployment, monitoring, health checks, log parsing, remediation).
* Troubleshoot application issues, including performance, integrations (authentication/authorization), availability, and errors; work across teams (infrastructure, security, development, and vendor) to isolate root cause.
* Assist with release management: reviewing upgrades/patches, scripting or deploying changes, ensuring robust rollback options, coordinating with QA/UAT.
* Maintain thorough technical documentation including runbooks, change plans, operational procedures, escalation protocols.
* Monitor metrics and alerts; ensure SLAs / KPIs (uptime, response/resolution times) are met; manage incident / problem management lifecycle in compliance with our governance.
* Efficient change management, keeping to regulatory, audit, risk, security requirements.
* Engage with vendor support: liaising for patches, bug fixes, feature requests, licensing.
* Possibly provide on-call or out-of-hours support coverage.
Skills, Experience & Qualifications:
Essential:
* Experience supporting Windows Server environments (preferably versions relevant to ours).
* Familiarity with COTS applications (vendor software) in banking / financial services / other regulated environments.
* Strong knowledge of IIS web server: configuration, deployment, SSL/TLS, security, and performance tuning.
* Experience integrating applications with identity providers / IAM systems such as Okta (SSO/SAML/OIDC), user provisioning.
* Strong scripting skills – PowerShell is essential; knowledge of other scripting languages (Python etc.) is a plus.
* Good understanding of networks, authentication, security in enterprise OS context.
* Experience with monitoring / alerting tools, troubleshooting, performance diagnostics.
* Understanding of ITIL processes (Incident, Change, Problem Management) and ability to work under SLA constraints.
Desirable:
* Experience with Unix / Linux support (even if the role is Windows-centric), given our roles often cross platforms.
* Familiarity with middleware technologies (e.g., MQ, WebSphere) or other vendor tools.
* Experience with CI/CD and automation tools for deployment and release.
* Experience working in highly regulated/risk-sensitive environments (financial markets, compliance, audit).
* Relevant certifications (Microsoft Windows / Windows Server certs; IAM / Okta; ITIL).
Personal Attributes:
* Excellent problem solver; able to work calmly under pressure and manage/prioritize multiple issues.
* Strong communication skills—both technical (with peers and vendors) and non-technical (with business stakeholders).
* Proactive and self-starter mindset; continuously looking for improvements, automations, and efficiencies.
* Team player; ability to collaborate with multiple teams (Dev, Infrastructure, Security, Vendors).
* Reliability: commitment to SLRs, operation demands, and possibly shift/on-call.