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Based on Lenny's Podcast data
Lenny's Knowledge Sketch

Building the Largest Data
Team in Tech

Jess Lachs
VP Analytics & Data Science, DoorDash
10+ YEARS
Structure

Central vs.
Embedded Model

CENTRAL ORGMARKETINGPRODUCTGROWTH
  • One consistent talent bar and rubric across all analytics
  • Shared metrics and methodologies prevent duplicate work
  • Team culture and brand that attracts top data talent
  • De facto embedded in pods but report centrally
  • Growth paths across functions, not trapped in silos
Why embedded failsLoses consistency of talent, metrics become fragmented, people get stuck with nowhere to grow, you rebuild the same models on six teams.
The Philosophy

Analytics as a Seat at the Table

ANSWERING QUESTIONS(Service function)FINDING OPPORTUNITIES(Business partner)BOTH
  • Own outcomes, not just queries
  • Bring POV and ideas, not just answers
  • Answer "So what?" not just "Why?"
  • Balance exploratory work with reactive asks
The DoorDash hackathon

Deep dive on referral revealed fraud hiding in the data. Bimodal distribution: great customers vs. code-sharing discount-chasers. Recommendations: better fraud checks, caps on referrals.

The lesson

Data averages can be incredibly misleading. Distribution matters. Understanding why requires stepping outside the data.

"Analytics is a business impact driving function and not purely a service function. Not just answering the why, but answering the, 'What do we do now that we know this?'"
Cultural DNA

Extreme Ownership: The DoorDash Way

  • Boston launch, 2014: Whole team (4 people) waking at 5 AM to hand out promo codes, handing out cupcakes, even the sales guy who got commission—everyone just wanted to win
  • Outage night: Entire 20-person company jumps on support, answers phones, processes refunds. Jessica goes dashing to preserve courier capacity
  • WeDash program: 4x/year, every employee goes out dashing or does support. Build empathy with consumers, dashers, and merchants; catch bugs; live the product
  • Today: Expect this same ownership from every team member—if a data scientist needs to call customers to understand context, that's the job
Example: affordability feature launch

Feature shipped but didn't work as expected. Data showed segments, but why was the question. Team made phone calls. Data scientists included. That's extreme ownership—go find the truth, not just the numbers.

The hire

Look for people who blur boundaries. Product work, ops work, engineering work—people who do what's needed, not what's in their title.

Metrics

The Short-Term Leading Indicator

"Ultimately, you want to find a short-term metric you can measure that drives a long-term output. Retention is almost impossible to drive in a meaningful way in the short term."
The metric playbookSimple > Perfect. If people understand it, have intuition around it, and talk about it across the company, it'll drive better outcomes than a mathematically pure metric nobody gets.
Contrarian

Data Team Myths

Embed analytics in each functionINSTEAD →Central org with pods. You get consistency, growth paths, shared methodologies, and team culture—without losing proximity.
Data teams are service functionsINSTEAD →Data teams are business partners. Own outcomes. Bring ideas. Answer "so what?" not just "why?"
Stay in your lane (data scientist = data only)INSTEAD →Extreme ownership means calling customers, doing PM work, understanding qualitative context. Role boundaries are not helpful.
Optimize retention as your primary KPIINSTEAD →Find the input that drives retention (short-term, testable). Retention itself is a lagging indicator that's impossible to move intentionally.
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