Humanizing product development | Adriel Frederick (Reddit, Lyft, Facebook)
Adriel Frederick (guest), Lenny Rachitsky (host), Narrator, Narrator
In this episode of Lenny's Podcast, featuring Adriel Frederick and Lenny Rachitsky, Humanizing product development | Adriel Frederick (Reddit, Lyft, Facebook) explores humanizing Algorithms: Adriel Frederick on Growth, Diversity, and Judgment Lenny interviews Adriel Frederick, VP of Product at Reddit (formerly Facebook Growth and Lyft Marketplace), about building products that combine algorithmic power with human judgment. Adriel explains how R&D-style teams can thrive inside large companies, why diversity is a core business advantage (not just “nice to have”), and how his Trinidadian background shaped his product thinking. He shares stories from Facebook and Lyft about true “growth” versus shallow growth hacking, the necessity of putting humans in the loop for algorithmic decisions, and managing products through controversy and public scrutiny. The conversation closes with lessons on transitioning from IC to executive leadership, emphasizing organization design and empathy as the key multipliers of impact.
Humanizing Algorithms: Adriel Frederick on Growth, Diversity, and Judgment
Lenny interviews Adriel Frederick, VP of Product at Reddit (formerly Facebook Growth and Lyft Marketplace), about building products that combine algorithmic power with human judgment. Adriel explains how R&D-style teams can thrive inside large companies, why diversity is a core business advantage (not just “nice to have”), and how his Trinidadian background shaped his product thinking. He shares stories from Facebook and Lyft about true “growth” versus shallow growth hacking, the necessity of putting humans in the loop for algorithmic decisions, and managing products through controversy and public scrutiny. The conversation closes with lessons on transitioning from IC to executive leadership, emphasizing organization design and empathy as the key multipliers of impact.
Key Takeaways
Treat R&D teams as core, not side projects.
To avoid “organ rejection,” innovation teams must be clearly tied to the company’s core mission, their wins must be shared wins for the whole org, and other teams must still see themselves as owners of innovation—not relegated to just maintenance work.
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Diversity dramatically speeds up and improves global product decisions.
Having teams that “look like the world” lets you resolve product debates in minutes instead of weeks, because teammates can draw on real lived experiences across cultures, geographies, and socioeconomic contexts instead of constantly recruiting external panels.
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Algorithms need humans to set intent, constraints, and judgment.
Optimization systems are great at chasing a defined objective but blind to long-term effects, social reactions, and product intent; PMs must decide which decisions stay with humans, which go to algorithms, and design the interface between the two.
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Stay close to users, especially in moments of controversy.
When public criticism flares (e. ...
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Real growth comes from grinding on core user actions, not clever hacks.
Facebook’s growth came less from magic tricks and more from relentlessly improving fundamentals like sign-up, friend-finding, and habit formation, often via hard, non-glamorous product work rather than one-off “growth hacks.”
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Focus on the marginal (and worst-case) user to find real problems.
By studying users who are on the cusp of converting—or those with the worst possible setup—you expose the full stack of issues (latency, language, UX, identity mismatches) that data alone won’t surface, and you get the highest-leverage fixes.
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As you become more senior, your job shifts to org design and empathy.
At VP level, impact comes from building effective teams, clear goals, smooth processes, and trust; this requires deep empathy for colleagues, genuinely understanding their motivations and fears, and aligning on shared objectives rather than trying to be the smartest IC.
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Notable Quotes
“Algorithms don't understand long-term effects, how people might respond, or your intent for the product. It's really important for product managers to play that role.”
— Adriel Frederick
“If you want people across the world to use your product, you gotta have your teams look like the world. It just makes you so much faster.”
— Adriel Frederick
“Some controversy is necessary. You’re not going to have any meaningful influence on the world without changing some pattern of behavior.”
— Adriel Frederick
“There’s a laziness that can creep in where you’re just finding a lot of little things, because they’re easier. You end up doing incremental thinking that doesn’t meaningfully add up to something big.”
— Adriel Frederick
“The hardest part of empathy is taking my own shoes off. Once I do that and really understand the other person, most of the problems go away.”
— Adriel Frederick
Questions Answered in This Episode
How can PMs at earlier-stage startups design a healthy balance between algorithmic automation and human judgment before they have Lyft- or Facebook-level scale?
Lenny interviews Adriel Frederick, VP of Product at Reddit (formerly Facebook Growth and Lyft Marketplace), about building products that combine algorithmic power with human judgment. ...
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What concrete practices can leaders adopt to turn ‘diversity is good’ from a belief into a measurable business advantage inside their own product teams?
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When public criticism hits your product, how do you distinguish between feedback that should materially change your roadmap versus noise you should absorb and move through?
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In your own product, who is the true marginal user today—and what would watching them use your product in context reveal that your dashboards are currently hiding?
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As you move from senior IC to org-scale leader, what signals tell you it’s time to stop optimizing your own output and start focusing primarily on organization design and culture?
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Transcript Preview
There are probably, I'd call them, techno-utopians who would say, "Feed all data to the algorithm, give it an objective, and it will do the right thing." And I was like, "Yeah." The reason that falls down is the algorithms don't understand long-term effects often, nor do they understand how people might respond to it, nor do they understand your intent for the product. And I think it's really important for product managers to play that role. That is our job. When you are working on algorithmic heavy products, your job is figuring out what the algorithm should be responsible for, what people are responsible for, and the framework for making decisions.
(instrumental music) Welcome to Lenny's Podcast. I'm Lenny and my goal here is to help you get better at the craft of building and growing products. Today my guest is Adriel Frederique. Adriel is a VP of product at Reddit where he focuses on incubating and scaling new products within Reddit. Before that he was director of product at Lyft where he led the marketplace teams and the pricing teams over the course of five years. And before that he was an early PM at Facebook where he spent four years leading the user acquisition team. Adriel is one of these incredible product leaders who's way too under the radar because he doesn't spend all day on Twitter and instead is executing and building great products. One of the goals of this podcast is to highlight incredible product leaders who you may not be aware of, and Adriel is a great example. In our chat we talk about the origins of growth hacking, how to get better as a product leader, ways to increase diversity at your company, what it was like to work on Facebook's growth team early on, the future of AI, and a lot more. It was such a joy chatting with Adriel, and I am really excited to share this episode with you. With that, I bring you Adriel Frederique. This episode is brought to you by Linear. Let's be honest, the issue tracker that you're using today isn't very helpful. Why is it that always seems to be working against you instead of working for you? Why does it feel like such a chore to use? Well, Linear is different. It's incredibly fast, beautifully designed, and it comes with powerful workflows that streamline your entire product development process, from issue tracking all the way to managing product roadmaps. Linear is designed for the way modern software teams work. What users love about Linear are the powerful keyboard shortcuts, efficient GitHub integrations, cycles that actually create progress, and built-in project updates that keep everyone in sync. In short, it just works. Linear is the default tool of choice among startups and it powers a wide range of large established companies such as Vercel, Retool, and Cash App. See for yourself why product teams describe using Linear as magical. Visit linear.app/lenny to try Linear for free with your team and get 25% off when you upgrade. That's linear.app/lenny. Hey, Ashley, head of marketing at Flatfile, how many B2B SaaS companies would you estimate need to import CSV files from their customers?
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