The operators and researchers behind Guardian

Marcus spent eleven years in security operations before founding Guardian, latterly running incident response for a payments processor handling 40 billion transactions a year. He wrote the post-incident review that became Guardian's founding thesis. He still joins the SOC bridge for every customer-declared critical incident, and reads every renewal loss report personally.

Amara holds a doctorate in distributed systems and spent four years building anomaly detection for tier-1 network operators. She designed the behavioural graph that lets Sentinel resolve a process, a session and an API call to the same entity in under a millisecond. She chairs Guardian's model-safety review board and personally signs off every autonomous action class.

Priya shipped security products into regulated banking for a decade before Guardian, which is why every automated action in Sentinel carries an evidence trail and a rollback. She owns product, design and technical documentation, and insists that no capability ships until a customer risk committee could approve it without a phone call.

Daniel joined in 2021 from a listed infrastructure software company where he ran finance through an IPO and two acquisitions. At Guardian he built the unit economics model that ties every engineering investment to retained revenue, and he leads the audit committee relationship with our external assurance providers.

Sofia leads global sales, channel and revenue operations across 24 offices. She joined Guardian in 2020 after building the EMEA enterprise business at a network security vendor from nine people to 400. She is unusually strict about one thing: no Guardian seller may promise a capability that is not in general availability today.

Kenji defends Guardian itself. He previously ran security engineering for a hyperscale cloud provider's control plane and, before that, the SOC at a national telecommunications carrier. He is the internal customer for every Sentinel release: if a capability cannot survive Guardian's own red team, it does not reach yours.

Nadia scaled Guardian from 300 to 1,900 people without abandoning written operating charters or structured, evidence-based hiring. She designed the Guardian Labs rotation that puts every new engineer alongside threat researchers in their first year, and she publishes the company's pay bands and promotion criteria internally in full.

Thomas runs Guardian's 140-person research organisation, which tracks 340 named adversary groups and publishes new detection logic to customer tenants within hours. He spent nine years in national CERT work in the Nordics and still authors the annual Threat Landscape Report, including the parts that are inconvenient for vendors.

Grace owns legal, privacy and regulatory affairs. She built Guardian's data residency architecture with engineering rather than around it, and authored the lawful-access policy that governs how Guardian responds to government requests. She publishes the company's annual transparency report and defends its exceptions in front of customers.

Ravi leads customer success, support and professional services, including the managed detection and response practice with its three-minute triage SLA. He joined from a healthcare technology group where he ran a 24/7 operations organisation across nine countries, and he owns Guardian's 96% gross retention number end to end.