About the role
Reporting to the Head of Network & Infrastructure, the Internal Systems Manager leads a team of engineers responsible for all internal IT systems, desktop services, corporate network and business applications used across Zen. You'll ensure reliable, secure delivery of the technology our people depend on every day - whether they're working from the office or remotely. The role also owns key areas of ISO compliance, manages the IS budget, and drives the internal technology roadmap.
What you'll do
Lead and develop a team of IS engineers, setting priorities and ensuring high-quality service delivery across the business.
Own the desktop support service, making sure staff can work effectively whether on-site or remote, and act as the escalation point for major incidents.
Manage and administer core business systems including Microsoft 365, Active Directory, Atlassian, SCCM, Intune, Azure and Remote Desktop.
Look after the corporate network and infrastructure: office LAN, Wi-Fi, VPN, meeting room technology, Fortinet firewalls and Zabbix monitoring.
Oversee VoIP and cloud telephony services.
Plan and manage capital and operational expenditure for internal systems, working closely with finance.
Drive ISO 27001 and ISO 9001 audit readiness, support the annual finance audit, and handle SARs and HR-related investigations.
Own business continuity planning and the internal security posture.
Manage supplier relationships, licensing renewals, the IT asset register and hardware lifecycle.
Lead IS projects from initiation to completion, contributing to the wider N&I technology strategy.
What you'll bring
Proven experience managing a busy internal IT or service desk team - you'll know how to motivate engineers, manage workload and develop people.
Strong hands-on knowledge of corporate infrastructure: Active Directory, Group Policy, Microsoft 365, SCCM/Intune, Azure, VPN and firewall technologies.
Experience owning or contributing to ISO 27001 or ISO 9001 compliance - you'll be comfortable with audits, controls and continuous improvement.
A track record of managing IS budgets (Capex and Opex) and supplier relationships, with the commercial awareness to get value from contracts.
Solid project management skills - you'll be leading projects end-to-end and need to deliver them right the first time, on time.
The ability to communicate clearly with technical and non-technical stakeholders, and to adapt quickly when priorities change.
We're building an inclusive work environment
At Zen, your individuality matters. Your gender, race, ethnicity, disability, sexuality, neurodiversity, background, and everything else that makes you who you are, we value it all. We want you to feel seen, respected, and supported from the very start of your journey with us.
Our Values shape how we work and who we are. We celebrate diversity and build strong communities where everyone belongs. We put people and the planet before profit, and we're ambitious about the future, always learning, innovating, and striving to deliver award-winning service. Together, this means you'll find opportunities not just to grow your career, but to make a meaningful impact.
We're always open to conversations about part-time or flexible working, or reasonable adjustments, and we'll support you wherever we can. Please feel comfortable sharing your preferences during the recruitment process.
If you'd like to find out more about what life is like at Zen, take a look at our careers page. Or, if you'd prefer to speak with someone about the role, call us on or email, we'd be happy to chat
FAO Recruitment agencies & organisations: Please note that we do not need agency support to fill this role. We have a small, but great, pool of agencies on our PSL and will contact one of those if we need to.
Benefits
2 x Life Assurance Cover, with option to flex upwards
25 days Annual leave, rising to 30 days with length of service, with the option to purchase up to 5 more.
Access to private Medical Healthcare and a Healthcare Cash Plan
An extra day off for your birthday
Car salary sacrifice scheme
Continuous learning and development
Discounted Mobile plans
Flexible and Hybrid working
Free onsite parking
Internal coaching and mentoring opportunities
Onsite Contemplation and Prayer room
Onsite Electric Car Charging points
Optional flexible critical illness cover
People-friendly policies
Recognition awards where we celebrate the most awesome people
Retail discounts
Salary sacrifice Pension- minimum of 3% Employee contributions for a 5% Employer contribution
Six monthly salary reviews
Subsidised Nursery fees
Subsidised Onsite Restaurant
Superfast Free Reliable Broadband
Travel Loan and Ride2Work Schemes
Two days' paid leave per year for voluntary work
About Zen
At Zen, we're redefining what it means to be a business, not just through what we do, but how we do it. We believe there's a better way of doing business.
As the UK's largest independently owned telecommunications and technology provider, we put people and planet before profit. We're here for the long term, never for sale and driven by our purpose: Do right for people and planet. Being a certified B Corp is just one way we demonstrate our commitment to social and environmental responsibility. From award-winning services and industry-leading customer support to our focus on sustainability and community. Everything we do is guided by our core values, and yours.
At Zen, we know that our strength lies in our people. That's why we celebrate individuality and diversity, creating a workplace where everyone belongs. We bring together our Zen values and personal values to build a supportive, open, and inclusive environment. Together, we grow, both as professionals and as people. We're proud to be recognised as a Great Place to Work across multiple categories: Large Organisation, Wellbeing, Women, Development, and Technology, a reflection of the inclusive, empowering, and future-focused culture we've created.
We're ambitious. We embrace innovation and welcome change. We challenge ourselves to think differently, improve constantly, and lead by example. We see every challenge is an opportunity. Every voice matters. And every success fuels a much bigger purpose.
So, if you're looking for a job where your values matter, where you can help build a future where business is a force for good, join us and help make a difference. Whether you're just starting out or bringing years of experience, your work at Zen will have real impact on our people, customers, communities, and the planet.