> Markdown version of [/jobs/ext/3201961-cloud-infrastructure-engineer](https://www.wearedevelopers.com/jobs/ext/3201961-cloud-infrastructure-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Cloud Infrastructure Engineer - **Company:** Nucleus Financial - **Location:** London, UK - **Contract:** Permanent contract - **Skills:** Microsoft Windows, Active Directory, Active Directory Federation Services, Application Firewall, Computing Platforms, Confluence, JIRA, Microsoft Azure, Microsoft Biztalk Servers, Cloud Computing, Cluster Analysis, Cyber Security, Disaster Recovery, Domain Name System (DNS), Microsoft Dynamics CRM, Web Servers, Internet Information Services (IIS), Information Technology Audit, Internet Protocol Security (IP SEC), Virtual Private Networks (VPN), Kerberos (Protocol), Network Security, Log Shipping, Microsoft Office, Microsoft SQL Server, Windows Servers, Network Connections, Routing, Paessler Router Traffic Grapher, Windows PowerShell, Azure Active Directory, Microsoft SharePoint, Single Sign-On, SQL Server Agent, SSL Certificate Management, Computer Networking Systems, Enterprise Software Applications, System Availability, Grafana, Information Technology, Atlassian Tools, Fortinet, CIS Benchmarks, Terraform, Azure Resource Manager - **Published:** September 23, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=3d27321496796052 ## About the Role * Proven experience in a similar technical role involving infrastructure and cloud technology. * Experience in an environment providing and supporting B2B customer-facing technology. * Experience working within a regulated or externally audited industry, with an understanding of contractual obligations and control frameworks such as ISO 27001, SOC 2 / ISAE 3402 / AAF, and CIS benchmarks/controls (or equivalents such as NIST). * Excellent communication and interpersonal skills. * Self-motivated, and capable of tackling complex projects either on their own or as part of a team. * Able to work collaboratively across different departments/teams with differing technical capabilities, and with external customers and vendors, to deliver effective solutions. * Proven experience with Microsoft Azure and Windows Server administration. * Strong networking and firewalling depth, in particular NAT/PAT, site-to-site (IPsec) VPN, routing and DNS. * Advanced Active Directory administration, including trusts, Kerberos delegation and certificate management. * Microsoft Entra ID / Azure AD in depth - Enterprise applications, SSO, Conditional Access, hybrid identity. * Microsoft SQL Server administration - backup/restore and recovery, security/permissions, SQL Agent job management. * Knowledge of Windows-based IIS application administration. * PowerShell scripting. * Office 365 administration and automation. * Experience with backup and DR tools and processes. * Strong documentation skills and experience managing third-party vendors/suppliers. Desirable * Microsoft Dynamics CRM administration. * ADFS administration. * SQL Server high availability and disaster recovery design: e.g. Always On availability groups, clustering, log shipping. * Microsoft BizTalk Server and Microsoft SharePoint Server administrator. * Fortinet/FortiGate firewall administration. * Experience with PRTG, Grafana, or similar monitoring platforms. * Atlassian suite - Jira ticketing and project management, Confluence documentation Industry-specific experience: * Payment/settlement gateways (e.g. CREST/Euroclear), trading interfaces, CASS, and similar financial-market infrastructure. * Wealth management / stockbroking domain knowledge. * Understanding of modern infrastructure automation such as Terraform. ## Description The successful candidate will combine strong core Azure and Windows infrastructure skills with genuine depth in networking, firewalling, directory services and database administration. They will be comfortable owning complex, business-critical migrations end-to-end, liaising directly with vendors and customers, and producing high-quality documentation to support the wider team and our audit and compliance obligations., * Managing internal and customer server infrastructure on Microsoft Azure, including VMs, Network Security Groups, ExpressRoute, Application Gateways/WAF and other key Azure resources. * Designing, configuring and troubleshooting network connectivity between customers, third parties and our platform, including site-to-site VPNs, routing, NAT/PAT and DNS. * Administering internal and customer-facing firewalls, in particular Fortinet FortiGate * Building and maintaining connectivity to external trading, settlement and market data services (e.g. payment/settlement gateways such as CREST, and trading interfaces). * Administering and maintaining Active Directory, including trusts, Kerberos delegation, certificate services and certificate lifecycle management. * Maintaining and supporting Microsoft SQL Server, including patching, monitoring and day-to-day administration, and maintaining our high availability and disaster recovery configurations. * Testing and maintaining backups and DR processes (including invocation testing) to ensure they meet contracted RPO/RTO obligations. * Managing and maintaining the Microsoft 365 environment and associated tools. * Maintaining external-facing infrastructure (e.g. web servers, reverse proxies, DNS and public certificates). * Routine patching and maintenance of servers and firewalls. * Maintenance of our software and associated components on Third Platform Services (TPS). * Responding to IT audit and customer due-diligence information requests and providing supporting evidence. * Work alongside group information security to ensure infrastructure is designed, configured and maintained in line with security policies, control frameworks and audit requirements, and to support remediation of identified risks and vulnerabilities. * Managing relationships with third-party vendors and suppliers (e.g. Microsoft, Fortinet, connectivity and settlement providers), including technical liaison, escalations and coordinating delivery of changes. * Producing and maintaining clear technical documentation, runbooks and knowledgebase articles to support the team, ensure resilience of knowledge, and satisfy audit requirements. * Monitoring and responding to alerts as they arise from the infrastructure and monitoring platforms. * Out-of-hours work for routine maintenance and occasional project work. * Working on other IT projects relating to infrastructure and security as required. * Contributing to team planning. ## Related Videos - [GitOps for the people](https://www.wearedevelopers.com/videos/461-gitops-for-the-people) - [Creating a routing app with Google Maps API from scratch](https://www.wearedevelopers.com/videos/831-creating-a-routing-app-with-google-maps-api-from-scratch) - [Monitoring as Code - Managing your dashboards at scale](https://www.wearedevelopers.com/videos/753-monitoring-as-code-managing-your-dashboards-at-scale) - [What makes Cybersecurity different for critical infrastructure?](https://www.wearedevelopers.com/videos/571-what-makes-cybersecurity-different-for-critical-infrastructure) - [Improving quality with Agentic AI with Rovo Dev and Xray](https://www.wearedevelopers.com/videos/2005-improving-quality-with-agentic-ai-with-rovo-dev-and-xray) - [Enterprise-Cloud-Native - Fast-Paced Development & Deployment in a Highly Secure Banking Environment](https://www.wearedevelopers.com/videos/671-enterprise-cloud-native-fast-paced-development-deployment-in-a-highly-secure-banking-environment) ## Related Articles - [What Are The Top Skills Required For Azure Developers?](https://www.wearedevelopers.com/magazine/77-what-are-the-top-skills-required-for-azure-developers) - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [Best Companies to work for in London: Top 25 Companies in 2023](https://www.wearedevelopers.com/magazine/187-best-companies-to-work-for-in-london-top-25-companies-in-2023) - [Data Engineer Salary UK](https://www.wearedevelopers.com/magazine/253-data-engineer-salary-uk) - [The Most Popular IT Jobs on the Market](https://www.wearedevelopers.com/magazine/376-the-most-popular-it-jobs-on-the-market) - [Software Engineer Salary London](https://www.wearedevelopers.com/magazine/252-software-engineer-salary-london)