Senior Technical Support Engineer London

About Semble

At Semble, we are on a mission to enable health professionals to amplify their impact. We improve the way healthcare is delivered to millions of people by providing doctors and their teams with powerful, innovative, intuitive, and secure software. Our cloud-based clinical system is already used by thousands of clinicians, making their lives easier and saving them money, while structuring their health data to help research.

We are a passionate and driven team, proud to unite under strong cultural drivers:

• Impact - We do work that matters
• Collaboration - We are in it together.
• Human touch - We care deeply.

About the IT Delivery & Security Services team

We believe the best IT is almost invisible. We are dedicated to building secure, intuitive systems that make self-service simple, automating routine work, streamlining complexity, and removing barriers. Many of our tools are already self-serve, and we are always pushing further. Our commitment to high standards has helped Semble achieve key security certifications and set the benchmark for best practice across the business. We champion clarity, transparency, and processes that are easy to understand and straightforward to follow.

About the role

This is a rare opportunity to be the most senior individual in Semble's IT function and to genuinely shape it. You will report directly to our Head of Information Security, working with significant autonomy to own, lead, and continuously improve how IT services are delivered across the business. You will be supported by a junior team member, but this is fundamentally a role for someone who is comfortable driving strategy, making decisions, and executing independently. The scope is broad, the ownership is real, and the opportunity to leave a lasting mark on how Semble operates is significant.

What you will be doing

IT Strategy, Ownership & Continuous Improvement

• Own the IT roadmap and drive delivery of key modernisation initiatives, including EDR replacement, MDM migration, BYOD improvements, and logging and reporting enhancements.
• Define and execute IT strategy in alignment with business goals, balancing developer experience with security and compliance requirements.
• Own the full lifecycle of IT platforms and services: procurement, implementation, maintenance, licensing, renewal, and retirement.
• Proactively identify opportunities to automate, simplify, and improve the IT experience for all staff, with a strong bias towards self-service; always asking how we remove the need for a ticket in the first place.
• Act as the primary decision-maker and escalation point for all IT matters, working collaboratively with the Head of InfoSec on security‑adjacent decisions.
• Champion clarity and transparency in how IT requirements and processes are communicated across the business, making it easy for colleagues to work confidently and independently.

Platform & Systems Management

• Administer and continuously improve the IT stack, including MDM platforms (e.g. Jamf, Hexnode), macOS fleet management (Nudge, Munki, Installomator), and cloud services (e.g. Microsoft 365, Okta).
• Manage device configuration, deployment, patching, and asset lifecycle across a remote‑first, macOS‑centric organisation, maintaining a continuously healthy and compliant estate.
• Ensure IT systems are robust, well‑documented, and built to scale without requiring a proportionally larger team.
• Evaluate and lead the transition to new platforms and tooling as the business evolves, including owning the end‑to‑end delivery of platform migrations.

Access & Identity Management

• Own access management across internal systems, including provisioning, reviews, and access revocation.
• Lead the Joiner, Mover, Leaver (JML) lifecycle, ensuring seamless, secure onboarding and offboarding experiences.
• Drive improvements in identity governance, working closely with the InfoSec team where policies and tooling intersect.

Security, Compliance & Audit Readiness

• Ensure that every device, system, and process in the IT estate meets the required standard at all times, not just ahead of scheduled reviews.
• Own the continuous maintenance of accurate, audit‑quality records: access logs, device inventory, patch status, provisioning documentation, and system configurations.Apply strong security best practices across all IT systems and processes, including endpoint health, logging, monitoring, and access controls.
• Act as a trusted partner to the Head of InfoSec on audit and compliance activities, ensuring evidence is always current, accurate, and accessible.
• Support Semble's Information Security Management System (ISMS), ensuring IT practices align with business KPIs and certification requirements.
• Contribute to a shared culture of security‑by‑default, keeping risk low and standards high without creating unnecessary friction for the engineering teams we support.

AI & Automation

• Bring proven, practical experience of using AI tools in your day‑to‑day work and lead by example in identifying where automation can replace manual processes.
• Research, implement, and iterate on AI‑assisted workflows across IT operations, from device management to service delivery.
• Be able to speak to specific AI tools or automation workflows you have built or implemented, with measurable impact on efficiency or operations.
• Stay close to developments in the AI tooling landscape and bring new ideas to the team.

What we are looking for

Required:

• Minimum of 5 years of IT experience, with at least 2‑3 of those years in a role where you held significant ownership or led projects independently, rather than in a purely supportive capacity.
• Demonstrable experience owning and delivering an IT improvement roadmap, including at least one significant platform migration or infrastructure modernisation project end‑to‑end.
• Proven, deep experience with macOS fleet management at scale, including hands‑on familiarity with Hexnode/Jamf Pro and open‑source tooling such as Munki, Nudge, and Installomator. Experience evaluating or migrating between MDM platforms is strongly preferred.
• Strong experience with cloud‑based platforms and SaaS administration (e.g. Microsoft 365, Okta).
• Familiarity with API integrations and how IT tooling connects across a modern SaaS stack.
• Experience working in a SaaS environment or a regulated industry, with a strong appreciation of the governance and compliance expectations that come with it.
• A track record of maintaining IT environments to a continuously high standard, with audit readiness as a default operating mode rather than a periodic event.
• A proactive, strategic mindset: you are comfortable setting direction, not just following it, and you measure your success by outcomes not activity.
• Solid understanding of security fundamentals and best practices, with the ability to implement them pragmatically in a fast‑paced engineering environment.
• Genuine, hands‑on AI experience: not curiosity, but practice. We will ask you to speak to specific tools or workflows you have built or implemented, and the impact they had.

Desirable:

• Experience evaluating and migrating between MDM or EDR platforms.
• Exposure to ISO 27001 or SOC 2 environments.
• Proficiency in the French language (nice‑to‑have, not mandatory).

We welcome applications from people of all backgrounds and all walks of life, including any typically underrepresented groups in the technology industry. We also encourage applications from disabled and neurodiverse candidates, so if there are any adjustments we can make to support you throughout the recruitment process, please do let us know.