Episode 20 - People Before Playbooks: Lessons from ExtraHop Co-Founder with Raja Mukerji

Join host Aaron Burnett as he sits down with Raja Mukerji, co-founder of ExtraHop, to talk about talking to 68 customers before writing a line of code, why launching into the 2008 financial crisis turned out to be a gift, and what it took to step aside as CEO of his own company. They also discuss the identity crisis that followed a $900M+ exit, and the hard-earned lesson that the best fuel isn’t fear of losing, but the choice to keep building because you want to.

About Raja Mukerji: Born in the UK and raised partly in India, Raja started programming at age eight before studying computer engineering at the Milwaukee School of Engineering. After seven years at F5 Networks, he co-founded ExtraHop in 2007, bootstrapping it through the financial crisis to an acquisition in 2021 for more than $900 million. The company now does over $300 million in revenue. 10-year EO member and a passionate advocate for intentional community, customer obsession, and the principle that every company is a company of people.

Note, this podcast features real entrepreneurs sharing real challenges and solutions. No pitches, no sales - just honest conversations about the moments that shape successful businesses.

A Different Kind of Upbringing

Aaron:  Raja, welcome. You were born in the UK, but you spent a significant part of your childhood in India. Can you tell me a little about that?

Raja:  I was born in the UK. My parents grew up in India, and they moved to the UK for work. When I was fourteen and a half, they decided they wanted to move back to India, which was a jarring transition. There was xenophobia in the UK at the time — my dad was hitting a glass ceiling. They wanted to give their family a better shot in a place where there wasn't that barrier, and India was where they came from.

Aaron:  What was it like to land in India as a teenager who had grown up in the UK?

Raja:  It was incredibly difficult. I had language barriers. I had preconceived notions about what it meant to be British. People had preconceived notions about me as well. The cultural difference was significant. The key thing that I carry with me from that experience is something that I've applied ever since: you can't take community for granted. You have to be very intentional about it. You have to consciously invest in it. And when I look at a lot of the decisions I've made — at F5, at ExtraHop, in EO — they all stem from that realization.

From Manipal to Milwaukee

Aaron:  At some point your family returned to the UK, but you stayed in India. Then eventually you made your way to the US?

Raja:  That's right. I stayed in India while the rest of my family went back to the UK. I attended Manipal Institute of Technology in India, and then I moved to the US in 1996. I went to the Milwaukee School of Engineering, where I studied computer engineering.

Aaron:  How long had you been programming at that point?

Raja:  I started programming when I was eight years old on a BBC Model B computer. So by the time I got to university, programming wasn't new to me — the hardware and software intersection had been a passion for a long time. That's actually what drew me toward computer engineering specifically.

The F5 Years and a New Thesis

Aaron:  You joined F5 Networks in 2000. Tell me what that experience was like.

Raja:  F5 was a formative experience. I was there from 2000 to 2007. The CTO had a mantra I've never forgotten: customers come first. That shaped everything. At F5, we were building devices for security, performance, and availability — great products. But as I was working closely with customers, I kept noticing the real problem wasn't slow networks or too many hops. The root cause was that customers were flying blind. They didn't know what was actually happening in their environment. They were battling complexity because of opacity.

Aaron:  And that became the thesis behind ExtraHop?

Raja:  Exactly. The opacity of IT causes breaches. It causes availability problems. It causes performance problems. So Jesse Rothstein and I said: what if we clean the windshield? You've got this car that keeps crashing — how about we just let you see where you're going? That going-back-to-basics approach was what we set out to build when we started ExtraHop in 2007.

Founding ExtraHop

Aaron:  Before you started building, you talked to a lot of customers — more than most first-time founders would.

Raja:  We spoke with sixty-eight customers before we actually started building the product. We'd tell them: we're not going to try to sell you anything because we don't have anything to sell you, and we'll buy you lunch. I still remember when WaMu showed up — thirteen people walked in ready to go. I'm looking at the bill from Metropolitan Grill afterward, thinking, we haven't raised a penny yet.

Aaron:  You were engineers who had never founded a company before. What was the early experience like?

Raja:  Jesse and I are engineers — we still are. When we got stuck, we turned to each other and said, let's go fix this code. We bootstrapped the first year, self-funded, paid salaries without drawing salaries ourselves. That doesn't exactly evoke marital harmony. At the end of year one we raised — a large angel round with Madrona as an institutional investor. Marc Andreessen and Ben Horowitz came in as angels, not through a16z — this was before a16z existed. By the end of year two we had nine employees. We'd spin it as three hundred percent year-over-year growth, but it was three people to nine.

— SPONSOR BREAK —

Before we continue, I want to tell you about the community that made this podcast possible — the Seattle chapter of EO, Entrepreneurs' Organization. It's not networking. It's not selling to each other. It's real entrepreneurs sharing real challenges and solutions. If you have a business that does at least a million a year in revenue and you're curious about joining a community that gets what you're going through, check out EO Seattle.

The Financial Crisis Was a Boon

Aaron:  You launched in 2007 and shipped your first product in 2008 — right into the financial crisis.

Raja:  In hindsight, the financial crisis was a boon for us. It drove a culture of frugality through everything. I still remember our most valuable asset was the slide projector. We'd lock it up every evening because it cost eight hundred dollars. We treated every purchase as a piece of the company. While our competitors had been latched onto VC funding, we were very deliberate about what we spent on. When Sequoia was telling everyone to cut to the bone, that ended up decimating our competitors in a major way. We focused on the customer problem, not the competition. If we'd tried to copy a competitor, we'd also have lifted all their legacy cruft into our product, and that made no sense.

Aaron:  You spoke to sixty-eight customers before building. What did you learn from that about customer discovery?

Raja:  It came directly from my role at F5. I was a customer-centric kernel engineer — two things that are usually orthogonal. I didn't see customer feedback as a distraction. I saw it as validation. When you work on a kernel, you can't go back to your grandmother and say, I just turned the scheduling system into an order-one scheduling system with complete determinism. They look at you and say, what? But if you make a change and a customer says, all my problems are gone — that's a massive validation. That's what drove us.

The Arc of Revenue — and the Misses That Shaped It

Aaron:  How did the revenue arc unfold in those early years?

Raja:  We worked fourteen years for an overnight success. Our first sales hire did one-point-four million in his first year. We looked at that and said, this is easy. He hired two more people. The next year we did four-point-two, and the two new hires weren't working out, so we cut them — and he still did four-point-two. We went into the board meeting swaggering. Madrona said, okay, you're going to sign up for more, aren't you? Absolutely. How much? We're going to do ten. We did six-point-eight.

Aaron:  A miss.

Raja:  A big miss, and a little humility. Then we went from six-point-eight to ten. Then we raised a Series B from Meritech, did twenty-five-point-one — two-and-a-half times the prior year. The board was saying go for fifty. We did thirty-five. More panic. Then sixty-eight. So we were all over the place. The issues were too much heroism from the founders, too much focus on individual talent, elephant hunting. We didn't focus enough on ramping the people we were bringing in. We'd bring someone in from a company where they'd done great work ten years earlier, and we didn't reckon with the fact that people change. People lose their mojo, or redirect it. Today we're over three hundred million in top-line revenue, and the same principles still apply. You've got to move fast, but you can't compromise on the bar. And you can't spend so much time ruminating over the decision that you lose the opportunity. We are still building the space shuttle as we fly it.

Principles Over Playbooks

Aaron:  I've read that an axiom for you is that you succeed by mastering principles. What are the principles that have continued to propel you?

Raja:  I wouldn't say I've mastered anything. I would say I'm very passionate about these principles — and the moment you believe you've mastered one, you've done yourself and the principle a disservice. The one I come back to most is this: I don't believe there's such a thing as a product company or a services company or a marketing company. Every company is a company of people working with people. You can't hold an agent accountable. You can't get an agent to actually care. Take a company like Zappos. They sold shoes, but their customers treated it like a cult. The book about Zappos is called Delivering Happiness — not delivering shoes. There are many ways to provide value: lower prices, quicker fulfillment, a superior product. But to quote Maya Angelou: people will forget what you say, people will forget what you do, but they'll never forget the way you make them feel.

The Exit That Changed Everything

Aaron:  ExtraHop was acquired in 2021 for more than nine hundred million dollars. What about that experience was what you expected, and what wasn't?

Raja:  This one hits close to home. When that transaction closed, I looked at my bank account and I didn't know what to make of it. Does this mean game over? Mission accomplished? The thing is, Jesse and I had both been maniacally focused on equity value and culture — every one of my direct reports made more than I did on their W-2s. When the outcome came, I was lost.

Aaron:  In what way?

Raja:  I'm going to share this EO confidential. As many entrepreneurs have faced — I am navigating a divorce. And I'll controversially say that had we not had the outcome, I probably would still be married. The sudden influx of personal funding meant my wife at the time thought the game was done. We were going to ride off into the sunset. I'm looking at this thinking, I'm not even forty-six yet. We just got real backing. I've worked fourteen and a half years to get this at-bat. I want to see how this goes. That massive misalignment — money as the end versus money as validation, now we can play with house money — was something I did not get right. And honestly, I'd been anesthetizing myself to the problems in my marriage by working more, so maybe it was destined not to work anyway.

Aaron:  And the imposter syndrome — that got worse after the acquisition?

Raja:  Much worse. I'd be in meetings with Silicon Valley people talking about their vineyards and their private jets, and they'd turn to me and say, Raja, what toy are you going to invest in? I said, I've got this WHOOP band. Every entrepreneur has some form of imposter syndrome. I think it's what fuels us. But the reason it was so intense at that point was that objectively, there was no reason for me to grind as hard as I was grinding. I realized I was fueled by my demons, not by trying to hit the next milestone.

Aaron:  Do you still grind as hard now?

Raja:  I still work hard, but it's not with the fear of losing anymore. It's based on: I want to do this, I want to try it out. The difference is I'm doing it because I want to, not because I have to.

Finding Community in EO

Aaron:  You're a ten-year EO member. What brought you to EO?

Raja:  I was struggling at ExtraHop in 2016. We'd just had the big miss — thirty-five on a goal of fifty. And we'd decided to bring in an outside CEO. For a founder to step aside and let somebody else call the shots is never easy, especially when this wasn't a lifestyle business. I tried to talk to my friends about it, and they just didn't get it. They'd say, well, you can sort of step back now and somebody else will have all the responsibility. And I'm thinking, no, you don't understand — I've got two mortgages backed by this. There was no 401k, no retirement savings. Everything was in the company.

Aaron:  How did you find your way in?

Raja:  Andy Liu — who was also in my cohort at Madrona — had told me great things about EO. And Kabir Shahani, who was in an EO forum at the time, was about to move over to YPO. Andy and Kabir coordinated so that when Kabir left, I joined his forum.

Aaron:  What changed for you once you were in?

Raja:  When I first joined I was swirling — and honestly in something of a victim mentality. I was telling myself stories about VCs who like to take founders out of their founding roles. My ego was all over me. I was myopic about the wound I'd sustained. In EO, everybody I was talking with had stepped off that same diving board. They'd been through it. They weren't preaching. And the principles I was introduced to changed how I think: stoicism, living above the line, growth mindset, gratitude. Chuck Bender introduced me to The Daily Stoic. Russell Benaroya introduced me to five-minute journaling. Andy Liu introduced me to Indistractable. We had Greg McKeown come to a retreat and talk about essentialism. These aren't just good books — they're resonant education. Ways to actually live your life.

Aaron:  EO helped you through some incredibly challenging moments — the miss, the transition, the acquisition. What is it about the organization that made that possible?

Raja:  The fact that we have to be founders to be in EO is a bigger deal than most people appreciate. It means everything around ego, self-doubt, imposter syndrome — all of it rings true in every single person in the room, regardless of the scale of their business. When somebody tells you, get out of your own head, they're not preaching — they've been there. And the level of empathy you get from sharing at that five percent means people aren't rooting for your next quarter. They're rooting for your happiness.

Network Intelligence in the Age of AI

Aaron:  I want to bring this back to ExtraHop and the space you occupy — network detection and response. I was reading this week about the latest AI models, including the ones being held back from all but the largest companies because of their ability to develop exploits, even for non-technical users. How does ExtraHop think about defending against that kind of AI capability?

Raja:  One of the biggest challenges today is: how do you tell the difference between an AI agent in your environment versus a real person? The legacy approach was to run endpoint agents — CrowdStrike and the like. But that doesn't work when the AI agent is running on that same machine, because it just looks like software running. However, if you can fingerprint behaviors on the network, you can tell very easily whether something is human or not. Think of it as network-level CAPTCHA.

Aaron:  Walk me through what that looks like in practice.

Raja:  Day in the life of a user on your network. Bob logs in at nine in the morning, does a little work, checks Salesforce, glances at the news, streams Spotify while he works, takes a lunch break — you see the pattern of life on the network. Sporadic, human-paced. Next day, Bob comes in at seven, starts hitting every single item in the code repository. No Spotify. No YouTube. No lunch break. Just hammers through everything and is done by ten. Two possibilities. One: Bob got extremely caffeinated. Two: Bob is running an agent. The behavioral fingerprints of an AI versus Bob's known human pattern are very different, and they show up on the network in bas-relief. You can see them clearly.

Aaron:  And beyond just detecting that?

Raja:  We don't need to be told where to look. Because we're watching everything, we baseline the behavior of every entity in the environment. We can identify the difference between automation and humans. And there's a protocol in the AI world called MCP — it wires agents together. We can detect unsanctioned MCPs connecting to each other inside an environment. Whether it's an employee who brought an open-source model onto the network, or a bad actor who's using MCP to move laterally — either way, it shows up on the network, and our product catches it.

Closing Thoughts

Raja:  To everybody who's listened to this podcast, I want to thank you for your time. Everyone talks about the next deal, the next valuation, the next amount of top-line revenue. Money comes and goes. The only currency we have that is truly non-negotiable is our time, and the attention we choose to layer onto that time. The fact that you're here listening means a great deal. I look forward to connecting with every single one of you at our next event.

Aaron:  Beautifully said. Thank you, Raja.

Raja:  Thank you very much.

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