meet the team
Sean Lewis
Engineer
“Whatever standard you’re working towards, we build the infrastructure that gets you there securely.”
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Mission driven
Sean is LeftBrain’s Infrastructure Engineering Lead, translating what clients need — via the Strategist team — into the best and most secure infrastructure for each project. That covers everything from building MDMs to help clients meet standards like ISO 27001, to setting up identity providers and deploying phishing-resistant MFA. Before LeftBrain, Sean served five years in the RAF as an IT technician, working with people of all backgrounds and abilities towards a shared goal under real pressure — experience that taught him to keep a level head and stay focused on the end objective. What he values most about LeftBrain is how welcoming and genuinely caring the team is, at every level.
- Cisco Introduction to Networks
- Jamf Certified Admin
Get to know Sean…
Latest from Sean & co.
Why CTOs should treat mental health like infrastructure – advice from a veteran
A veteran’s take on building resilient tech teams from the inside out. Learn how physical fitness, trust, and leadership mindset can prevent burnout and strengthen delivery.
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#CyberMonth2025: Lessons from the field
Discover twelve real-world perspectives on modern cyber security from the LeftBrain team. Shared throughout Cybersecurity Awareness Month, these insights explore how leadership, culture and everyday habits build stronger, more secure businesses.
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LeftBrain is now a Cyber Scheme accredited company
Choosing a cyber security partner means trusting that the people behind the service can actually deliver, and this accreditation adds another layer of verification to what we already bring to the table.
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Meet Sean’s engineering & technical delivery team
Meet the team behind engineering.
