Top IT Jobs in London

Support, configure and maintain desktop, server and network systems across Windows, Linux and macOS environments. Troubleshoot end-user issues, manage Windows domain infrastructure (AD, Group Policy), support MDM (Workspace ONE/Jamf), monitor critical systems, and build automation (PowerShell/Bash/Python) to reduce manual toil and scale IT operations.

Support the investment team in IT project management, overseeing development and testing of IT tools and maintaining data consistency in databases.

Architect and build an AI-native automation and orchestration toolchain (fusing traditional tools with foundation models), enable and mentor early adopter teams, standardize practices across departments, drive infrastructure-as-code and CI/CD adoption, contribute to the IT/Sec operating system, and champion cross-departmental adoption of automation and AI platforms.

This role involves overseeing the product vision for IT & Cyber Risk, driving AI integration, collaborating on product delivery, and engaging with stakeholders to align product strategy with corporate goals.

Administers and architects IBM i environments across IBM Power Systems, managing partitions, upgrades, backups, disaster recovery, high availability, security, performance, storage, and integrations. Develops automation with CL, SQL, and RPG; supports IBM MQ, APIs, cloud platforms, and open-source technologies. Serves as the highest technical escalation point, leads root-cause analysis, participates in on-call support, and manages infrastructure changes, modernization initiatives, documentation, and compliance.

Process payroll accurately and confidentially, including timekeeping, wages, overtime, bonuses, taxes, deductions, payments, records, and reporting. Resolve payroll discrepancies and respond to employee and management questions. Maintain updated payroll records, calculate unemployment and severance payments, and ensure compliance with relevant legislation and regulations.

Support IT operations across multiple datacenters, focusing on hardware and firmware troubleshooting, process improvement, and collaboration with R&D. Travel for hardware projects is required.

Serves as a Tier 3 escalation point while managing hybrid identity, Active Directory, Microsoft 365, AWS, Azure, endpoint systems, and enterprise applications. Maintains security, compliance, and infrastructure health across global environments; automates workflows with PowerShell, Bash, Power Automate, and Graph API. Leads infrastructure and software projects, supports Windows, macOS, and Linux users, manages collaboration hardware, documents processes, and drives continuous IT operations improvement.

The Support Analyst will manage FIX connectivity requests, support trading operations desks, perform FIX testing and certifications, and maintain network relationships, requiring strong FIX technology proficiency and experience in a broker/dealer environment.

The Principal IT Pillar Specialist leads IT projects, configuring and maintaining AVEVA E3D software while solving complex issues with extensive expertise in IT Pillar discipline.

The IT Strategic Enterprise Architect will define architecture foundations, develop enterprise application blueprints, and influence strategic technology decisions to enhance organizational value and clarity.

Lead full-lifecycle Oracle Fusion finance implementations, upgrades, and integrations (MuleSoft, Oracle EPM). Manage large transformation programmes and concurrent agile initiatives, oversee project planning, risks, governance, data migration, reporting, vendor relationships, stakeholder communication, and transition to BAU.

Lead strategic procurement for the IT category, covering hardware, software, and services. Develop category strategies, analyze spend, conduct tenders, negotiate contracts, manage suppliers, deliver savings, and ensure governance, compliance, risk mitigation, and performance improvement. The role requires strong stakeholder influence, supplier relationship management, commercial negotiation, data analysis, contract management, and experience with procurement or sourcing systems.

Own and evolve HTB’s internal platform stack, including identity and access management, Google Workspace, endpoint management, SaaS administration, security tooling, compliance automation, secrets management, and an AI/LLM gateway. Build integrations and workflow automations, maintain documentation and runbooks, support secure scaling, and participate in on-call for critical identity, email, and SaaS incidents.

Provide first-line technical support to London-based business users, resolving hardware, software, and system issues. Manage JIRA incidents and service requests, escalate complex tickets, support Microsoft technologies, maintain technical documentation, and follow ITIL and SLA processes. The role includes shift work from 6 a.m. to 7 p.m., an on-call rota, occasional weekend project work, and strong customer service and communication responsibilities.

Serve as the business-facing NetSuite order management expert to analyze, optimize, and document order-to-delivery workflows across ecommerce, EDI, and direct channels. Gather requirements, create functional specs, lead testing and QA, validate integrations, produce runbooks, and train stakeholders while liaising between sales, customer operations, IT, and external partners.

Sell the companys payment software and exclusive hardware to blue-chip B2B clients. Follow up company-provided leads, present solutions to prospects across the UK and mainland Europe, and help build and eventually lead a sales team. Office-based role with travel to client sites.

Administer and operate the NebulaOne AI platform and SIAP-delivered applications, including user access, configuration, licensing, monitoring, dashboards, maintenance, upgrades, incident resolution, and operational reporting. Maintain playbooks and recovery documentation, support automation workflows, deliver user training, and collaborate with developers, vendors, and university stakeholders to ensure reliable business-as-usual service delivery.

Own the strategy, roadmap, governance, configuration, integration, and continuous improvement of core business systems including Microsoft 365, Salesforce, and Atlassian. Translate stakeholder needs into technical requirements, manage vendors, support data governance and compliance, drive user adoption and training, monitor platform performance, and help implement AI tools. The role combines product ownership, hands-on low-code delivery, business process improvement, and vendor management in a small, autonomous technology function.

Provide day-to-day IT support for a globally distributed AI company: triage help-desk tickets, provision and manage laptops, administer Google Workspace, enforce endpoint compliance and security policies, manage SaaS licenses, support office networking/AV, run onboarding/offboarding, document processes, and contribute to security, infrastructure, and automation projects as the first IT hire in EMEA.

Administer and maintain regional corporate servers, networks, desktops and mobile devices. Manage Active Directory, Office 365, Intune, Fortinet/Cisco appliances, backups, asset inventory, and security compliance (ISO27001, PCI-DSS). Provide 24x7 support, reporting, and collaborate with global IT and InfoSec teams.

Lead platform security initiatives: define requirements, evaluate and implement security technologies (EDR, DLP, SOAR, SIEM), troubleshoot across Windows/Linux/macOS, develop architectures and documentation, manage security tool sustainment, update policies, and partner with IT and stakeholders to mitigate risk.

Lead governance of Change & Release Management across the IAM portfolio, coordinating planning, approvals, deployments, CAB presentations, vendor coordination, compliance/audit evidence, and KPIs to ensure low-risk, auditable production releases.

Build and maintain automated test frameworks and regression suites for IAM platforms (PAM, Vault, PKI, Active Directory). Integrate tests into CI/CD, perform API testing, validate IAM workflows, create smoke/health checks, analyze failures, support release readiness, and maintain audit/compliance evidence.

Lead implementation and strengthening of IT SOX controls, perform ITGC testing and gap analysis, develop control documentation and evidence standards, enable Riskonnect for control and testing workflows, coach IT teams on control ownership, support auditors and manage remediation to improve audit outcomes.