The Role
Lead design, implementation, and support of infrastructure, cloud, and networking platforms with a security-first focus. Monitor and resolve server/network issues, manage patching and Group Policy, deploy/manage Microsoft security tooling, investigate security incidents, run audits and risk assessments, support platform projects, and act as technical escalation and mentor for Systems Engineers.
Summary Generated by Built In
As we grow our global footprint, we are seeking a Senior Software Engineer to take ownership of the design, implementation, and support of our infrastructure, cloud, and networking platforms, with security as a core priority. The position will offer technical leadership and act as the primary escalation point for the Systems Engineers.
On a typical day, it looks like this...
- Monitor and resolve server and network issues to keep our systems performing at their best.
- Own patching, Group Policy, and core platform maintenance.
- Deploy and manage Microsoft Defender, Sentinel, and other security tooling.
- Analyse security alerts, investigate incidents, and drive continuous improvement.
- Run security audits, risk assessments, and help develop modern, practical security policies.
- Work with internal teams to deliver secure, compliant solutions across the business.
- Support platform‑related projects and act as a technical escalation for the Service Desk.
- Build strong relationships with external partners and guide Systems Engineers when required.
Does this sound like you?
Someone who thrives in a dynamic environment, enjoys solving complex problems, and brings a security‑first mindset. You’ll be proactive, collaborative, and comfortable balancing operational responsibilities with strategic improvements.
You’ll ideally have:
You’ll ideally have:
- 5+ years’ experience in a Senior IT Infrastructure or similar role.
- Hands‑on experience with Microsoft Defender, Intune, and at least 3 years with Microsoft Sentinel.
- Strong understanding of network protocols, firewalls, and core security technologies.
- Solid experience with Nutanix hyperconverged solutions and Microsoft SQL.
- A strong grasp of IT policy frameworks, risk management, and compliance best practices.
- Proven capability in cloud security and risk mitigation.
- Excellent communication, analysis, and problem‑solving skills.
- The ability to work independently, collaborate effectively, and support wider teams.
- A relevant degree in Computer Science, IT, or related discipline.
- Bonus: Microsoft security certifications such as SC‑200, SC‑300, SC‑400, SC‑900, or MAZ‑500.
About
Our Story From our entrepreneurial origins as a founder led start up, to a high performing global player working with some of the world's most recognisable brands, activpayroll has both a fantastic history and masses of future potential. Our story began in 2001, when our founder saw a gap in the market to support the oil and gas industry. Today, we are a leading global professional service organisation, providing integrated global and domestic payroll solutions, expatriate taxation services, global HR services and online HR people management tools to over 1,200 companies in more than 150 countries worldwide. We’ve Got YouHiring people is more than an investment of time and money – it’s an investment of trust. You trust us to help you realise your fullest potential, work with brilliant people and recognise your achievements. In return, we trust your abilities, we trust your instincts and are fully behind you to deliver the great work you are capable of - empowering you to make the tough calls and valuing your opinions, ideas and abilities.
Skills Required
- 5+ years' experience in a Senior IT Infrastructure or similar role.
- Hands-on experience with Microsoft Defender.
- Hands-on experience with Intune.
- At least 3 years' experience with Microsoft Sentinel.
- Strong understanding of network protocols and firewalls.
- Solid experience with Nutanix hyperconverged solutions.
- Experience with Microsoft SQL.
- Experience owning patching, Group Policy, and core platform maintenance.
- Experience deploying and managing security tooling and analysing security alerts.
- Experience running security audits, risk assessments, and developing security policies.
- Proven capability in cloud security and risk mitigation.
- Strong communication, analysis, and problem-solving skills.
- Ability to work independently and collaborate with teams.
- Relevant degree in Computer Science, IT, or related discipline.
- Microsoft security certifications such as SC-200, SC-300, SC-400, SC-900, or MAZ-500.
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The Company
What We Do
Created to let your business work seamlessly in multiple countries by giving you complete clarity and confidence, activpayroll is global payroll, international payments, global mobility and HR in one. Pay your people compliantly, on time, every time, worldwide. Take control with accessible tech. Team up with global tax specialists to stay one step ahead of legislation and compliance. Strengthen your workforce with our strategic HR specialists, and work with a partner that gets your vision of global clarity. Wherever in the world your business takes you, we’ve got you.
