[Guest Post] The Feeder Company Leaderboard: Which Companies are the Best Schools for US-based AI Security Architects?
Microsoft trains 10% of US AI Security Architects. Here's where the talent pipeline really flows. We mapped 859 senior security experts to reveal which companies are the best schools for the field.
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I’m thrilled to share another guest post from The Big Byte, a Substack newsletter that delivers data-driven insights about talent and leadership in the tech industry.
They excel at combining strong bottom-up talent insights with market expertise to offer a unique lens on DeepTech, and AI.
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In today’s article, he turns that same analytical lens toward a very interesting topic. Which US-based companies are the best schools for AI Security Architects?
Over the past two years, demand for experts who can bridge AI, cybersecurity, and cloud infrastructure has skyrocketed, and the The Big Byte team has mapped the data to reveal where this talent originates, where they are employed, and what it indicates about the future of security.
I was quite shocked by the data myself, and I think you will be too!
Let’s get to it!
The Feeder Company Leaderboard: Which Companies are the Best Schools for US-based AI Security Architects?
In the past 18–24 months, we have arguably crossed an inflection point in cybersecurity: what was once a niche conversation around “AI in security” has become a mainstream strategic concern. As attacks become increasingly AI-driven, it’s clear that companies also need AI-enabled resilience to stay ahead and strengthen defence, detection, and response.
In this context, many leading firms are pushing their hiring for senior technical talent (IC6 and above) who can bridge AI innovation, cybersecurity, and cloud architecture. We’re talking here of talents who know how to apply advanced AI technologies, especially LLMs, to enhance the security and operations of complex cloud environments.
To understand this evolving landscape, we mapped the top AI Security Architects (IC6) in the US at the principal, staff, and senior levels who work or have worked at 74 companies:
Top cybersecurity tech companies
Major cloud companies
Fintech players operating at a massive scale with high security demands
These companies were selected for their deep focus on cybersecurity within cloud computing and critical infrastructure contexts. We also focused on the US because it’s the largest cloud market and the country with the highest breach costs, giving us a strong pool of companies and talent for our analysis.
Altogether, we identified 859 professionals who combine (1) proven expertise in cybersecurity and cloud architecture and (2) direct, hands-on experience with AI or LLM-based projects.
We were particularly interested in seeing which companies attract and produce the most AI Security Architect talent, and what that reveals about where the industry is heading next.
Let’s crack the code behind the talent.
Interested in more Guest Posts? Let me know in the comments!
Where US-based security architects work now
Look at the top 3 of the top employers, and it might feel familiar. It actually mirrors the global cloud infrastructure market. Microsoft (Azure), Amazon (AWS), and Google (Google Cloud) together run 62% of the world’s cloud. As the largest cloud providers, they’re also among the most targeted by threat actors, and therefore must stay well ahead of the curve when it comes to defence.
Amazon, for instance, recently announced a $38 billion partnership with OpenAI to help its cloud arm, AWS, maintain its competitive edge in AI and infrastructure innovation.
Continuing down the list, six out of the top ten companies are cloud providers, including IBM, Oracle, and ServiceNow.
Beyond the cloud providers, the ranking also includes security leaders which roll out AI/LLM-powered security products and agents, as well as data platforms and large consumer and fintech firms. The latter two categories manage vast volumes of sensitive enterprise and customer data. That makes them prime targets for advanced threat actors and, in turn, main hubs for senior security architects to deploy AI-driven security systems.
Which companies train the most AI security architects
As you can see, Microsoft is not only the best home but also the best school, with 86 security architect alumni. That means ~10% of the US security architect talent pool has spent time at Microsoft at some point in their careers.
Beyond Microsoft, more than half of the companies that appear among the top employers but not the top feeders fall into the platform/cloud or consumer/fintech categories. These organisations typically bring in experienced professionals to secure their data and infrastructure, while leaving much of the early-career development to established security companies.
Speaking of which, the companies that do appear as top feeders are often the more mature security firms founded before 2000 (think of McAfee, Forcepoint, or Symantec). Their longevity has allowed them to build a strong legacy, unlike newer players such as Zscaler (2008), SentinelOne (2013), and Trellix (2021), which are still in the process of doing so.
Which companies produce the most AI security architects per 10,000 FTEs?
One might argue that the absolute scale favours companies. After all, Microsoft employs 226K FTEs, Amazon 500k excluding ops and Cisco 100K.
That’s exactly why we looked beyond volume and measured the relative efficiency of feeder companies. We focused on companies with at least 5K FTEs and calculated how many security architect alumni they’ve produced per 10K FTEs.
When viewed through that lens, the leaderboard looks very different now: 80% of the top 10 spots are occupied by security companies. Notably, none of the companies on this list employs more than 100K people.
This suggests that smaller, security-focused firms can operate with leaner teams and serve as strong training grounds for security architects, who later move on to larger cloud, platform, consumer or fintech companies to apply their expertise at scale.
Enjoying reading this article? Let us know in the comments!
A quick look at companies’ median tenure
We also quickly looked at median tenures and compared them with the absolute number of appearances in career histories. We found that Microsoft, Amazon, IBM, Cisco, and Google stand out from the rest, especially Microsoft, which leads with both a higher median tenure and the largest number of security architect alumni.
At the other end of the chart, we see companies that didn’t appear in the initial feeder ranking and show a lower median tenure. A likely explanation is that, for many of these organisations, the security architect function is relatively new or still expanding. Several might have grown their teams over the past 12–24 months, often by hiring AI-focused security architects.
Conclusion: Which companies are the best training grounds for AI Security Architects?
As attacks become increasingly AI-driven, leading firms are pushing their hiring for experienced security architects capable of applying AI-powered systems to strengthen the security and operations of complex cloud environments.
Major cloud providers top the charts when it comes to both employing AND producing AI Security Architects. As the largest cloud providers, they’re also among the most targeted by threat actors, and therefore must stay well ahead of the curve when it comes to defence.
However, when you look for the relative efficiency, the most effective “schools” for security architects are specialised security companies. These firms can operate with leaner teams and serve as strong training grounds for security architects, who later move on to larger cloud, platform, consumer or fintech companies to apply their expertise at scale.
A final thank you
A big thank you to Benjamin Lussert for reaching out and making this collaboration happen.
I genuinely enjoyed comparing perspectives with someone who comes at cybersecurity and AI from a slightly different angle.
That kind of cross-disciplinary exchange is how we level up as a community, and it’s exactly why I plan to explore more guest posts in the future.
If you want more insights like this, make sure to follow his work. You won’t regret it.
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This article comes at such a perfect time! I especially loved the point about 'AI in security' becoming a mainstream strategic concern. It's so tru how fast things are evolving. This data is incredibly insightful and really validates what I see happening in the tech world. Great read!
Interesting read.