Infrastructure & Network Administrator

You must have the right to work in the UK – no visa sponsorship can be provided.

Cornspring is redefining data solutions for Family Offices, Asset Owners, and UHNW clients. Our AI-powered platform integrates, validates, and secures private financial data, allowing intelligent insights via Gen-AI and LLM-based conversations.

Security, privacy, and reliability are at the heart of everything we do. As we scale our technology and infrastructure, we are seeking a diligent and experienced Network Administrator to manage, secure, and optimize our internal and cloud network environments.

This is a critical role supporting the stability and integrity of Cornspring’s Microsoft-based infrastructure, ensuring seamless, secure connectivity across systems, users, and cloud services.

Key responsibilities

Overview

• Responsible for the administration, maintenance, and performance of Cornspring’s internal networks, domain environment, and cloud-based services.
• Ensure the company’s network and system infrastructure operate reliably, efficiently, and securely.
• Collaborate with technology, security, and operations teams to support business continuity and employee productivity.

Network & Infrastructure Administration

• Manage and maintain Microsoft Azure resources including virtual networks, firewalls, VPNs, and hybrid connectivity.
• Administer and support NT domains, Active Directory, DNS, DHCP, and Group Policy Objects (GPOs).
• Oversee network hardware and connectivity for offices and remote workers, ensuring consistent performance and availability.
• Monitor network activity, bandwidth, and performance using established tools and best practices.
• Manage user provisioning, authentication, and access across systems.

Microsoft 365 & Endpoint Management

• Administer Microsoft 365 services including Exchange Online, Teams, SharePoint, and Intune.
• Manage device enrolment, configuration, and compliance through Intune and Azure AD.
• Ensure reliable and secure email, collaboration, and file-sharing capabilities for all users.
• Support user onboarding / offboarding processes and maintain accurate access records.

Security & Maintenance

• Apply security updates, software patches, and configuration changes in line with our security policies.
• Support endpoint protection and device compliance under the company’s security policies.
• Conduct regular network and system health checks, backups, and disaster recovery tests.
• Collaborate with the Head of Information Security on implementing zero-trust and identity management principles where relevant.

Support & Operations

• Provide 2nd and 3rd level technical support for network, server, and connectivity issues.
• Document network configurations, standard operating procedures, and troubleshooting guidelines.
• Work closely with vendors and service providers to ensure uptime and efficient issue resolution.

Requirements

Experience

• 5–10 years of experience in network and system administration, in a Microsoft-centric environment.
• Strong background in Microsoft Azure , NT domains , Active Directory , and Microsoft 365 administration.
• Experience managing hybrid or cloud-based infrastructures with distributed teams.
• Familiarity with ITIL-based service management practices and monitoring tools.

Technical Skills

• Proficiency in Azure networking , Active Directory , Group Policy , DNS / DHCP .
• Experience managing Azure AD Connect , Conditional Access , Intune , and device compliance policies .
• Good understanding of network fundamentals (LAN / WAN, VPNs, VLANs, routing, switching).
• Awareness of common security best practices such as least privilege, MFA enforcement, and secure configuration.

Mindset & Attributes

• Methodical, detail-oriented, and proactive in problem-solving.
• Strong communication and documentation skills.
• Reliable and consistent in delivering operational excellence.
• Comfortable working in a fast-paced, high-accuracy environment where reliability and confidentiality are essential.

Benefits

• Competitive compensation and performance-based bonus.
• Hybrid working : we work from a beautiful office in Bank 3 days a week.
• Being part of a revolutionary movement in Family Office technology.
• Working with cutting-edge AI and data technologies.
• Challenging projects that make a real impact to our sector.