Senior IT System Engineer in London

Hello. Welcome to GSS! We are a Network-Driven Managed Service transforming the global financial system with cutting-edge technology, including AI/Machine Learning and collaboration with top financial institutions. GSS will become the industry default for screening transactions for sanctions risk – through a consistent, standardised, and scalable model. Supported by regulators, trusted by the market. Join us in revolutionising the industry and making a real impact!

About the Role

Join our dynamic IT team as a Senior IT Systems Engineer! We are looking for a skilled and experienced Senior IT Systems Engineer to support our core IT infrastructure. This role is critical in ensuring the stability, security, and scalability of our corporate systems that support business operations. The ideal candidate will have a strong technical background, excellent problem-solving skills, and the ability to work collaboratively across teams.

This is a great opportunity to join our newly formed internal IT team, where you will play a key role in shaping the future of our infrastructure and driving innovation. You'll work with technologies like Microsoft 365, Intune, Virtual Desktop, and Mekari, lead IT projects, and help build a secure, scalable digital environment. In addition to strategic and project work, this role includes a hands-on element, such as handling support tickets and troubleshooting issues to ensure smooth day-to-day operations.

It's a great chance to help shape how things are done, grow your skills, and be part of a supportive team building something new and exciting. Plus, enjoy a collaborative, flexible, and innovative work culture where your ideas are valued.

What You'll Do

• Manage IT infrastructure: Oversee the IT infrastructure to ensure optimal performance, resilience, compliance, and security, while maintaining high availability and reliability of services across the organisation.
• Automate Deployments: Create robust automation to streamline IT processes.
• Collaborate: Work closely with the business to expand our Cloud platform capabilities.
• Innovate: Drive continuous improvements in our technology stack, from Azure and O365 to monitoring tools to improve costs, performance and end-user satisfaction.
• Secure Systems: Ensure our platforms meet the highest security and compliance standards including patch and vulnerability management, monitoring, managing VDI infrastructure, backup/restore and DR testing.
• Service Desk: Working with our Service Desk team to handle Level 2 and Level 3 support tickets, while proactively managing escalations to ensure timely resolution of complex or high-priority issues.
• Mentoring: Provide technical guidance to junior engineers.
• Document: System configurations, procedures, and changes to ensure consistency, support knowledge sharing, and enable efficient troubleshooting and future scalability.

Ideal Experience

• Minimum 3 years' experience in a senior systems engineering role within a corporate IT environment.
• Strong knowledge of Windows and Linux environments.
• Experience using and supporting the Microsoft 365 suite, including Outlook, Word, Excel, PowerPoint, Teams, OneDrive, and SharePoint, with a strong understanding of integration, collaboration features, and user support.
• Experience with Microsoft Intune: Skilled in configuring, supporting, and troubleshooting Intune environments, including device configuration policies, PowerShell scripts, application deployment, and conditional access policies.
• Hands-on experience in deploying, configuring, and managing Azure Virtual Desktop environments, including user access, session host pools, FSLogix profiles, and integration with Microsoft 365 and Azure Active Directory.
• Solid understanding of networking concepts (TCP/IP, DNS, DHCP, VPN).
• Familiarity with scripting and automation tools (e.g., PowerShell, Python).
• Relevant certifications (e.g., Microsoft, Cisco, AWS, VMware) are a plus.

What You Get in Return

• Impactful Work: Be part of a growing startup where your contributions make a real difference.
• Generous Leave: Enjoy 30 days of holiday (plus bank holidays).
• Comprehensive Benefits: Including a generous pension scheme, private medical insurance, and life assurance.
• Wellbeing Perks: Access to EAP, YuLife, holistic wellbeing programs, and a Virtual GP for your health and happiness.
• Flexibility: Hybrid working environment (we are open to remote working for some roles, please check with us at application) with a 'work abroad' policy for up to 4 weeks a year.
• Learning: Access to Udemy, a learning platform with thousands of top-rated courses to develop both tech and business skills.

Diversity statement

We are an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to, among other things, race, religion, gender, sexual orientation, gender identity, national origin, age or disability. Please note, unfortunately we are unable to offer sponsorship for this role.

Seniority level: Mid-Senior level

Employment type: Full-time

Job function: Information Technology

Industries: Software Development, IT Services and IT Consulting, and Financial Services

Ready to revolutionise finance and have fun doing it? Join GSS where we live by our values: Respect, Ownership, Synergy, Efficiency. Come join us and take your career to new heights!