Sleak
Our Mission

We make world-class coaching accessible to every professional

Growth happens when people feel supported enough to try, safe enough to fail, and guided enough to improve. That is what Sleak is built for.

We are hiring!Join our team
Four members of the Sleak team at Bosch Connected World
Note from the founders

We started Sleak because the best sales training in the world is still the hardest to scale. A great coach can transform a rep, but no manager has time to sit in on every call, every week, for every person on the team.

So we built one that does. Sleak gives every rep a patient, expert sparring partner that’s available on any device, at any hour, and never runs out of patience. It’s the practice we always wished we’d had — and the kind that compounds quietly, conversation after conversation.

The Sleak founding team
Sleak's founders standing together in the company's office
Metrics

Highlight company impact by the numbers

The numbers below cover what matters day to day: how quickly teams are ready, how often they can practise, and how much experience goes into every piece of feedback.

+46%
Sales performance increase
80+
Reps onboarded in 5 weeks
1,000+
Sales experts' knowledge built into every feedback loop
24/7
Practice availability, on any device

Help us build the AI coach that develops teams

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Our Values

What we believe

Three principles that shape every conversation we build.

  • Practice beats theory

    Skill comes from reps, not slide decks. We make deliberate practice effortless.

  • Feedback should be fair

    Every rep gets objective, consistent coaching, not whoever the manager had time for.

  • Built for your world

    No generic scripts. Every scenario reflects your product, market, and buyers.

Timeline

Our story so far

From a single idea to a sales-training platform trusted across Europe

  1. 12 Sep, 2025Sleak Launched
  2. 18 Dec, 2025$1M ARR
  3. 24 Jan, 20263 Team Members
  4. 06 Mar, 2026$10M ARR
  5. 28 May, 2026$20M ARR
  6. 12 Jun, 2026Sleak Rebranding
Meet the team

Some Faces behind Sleak

Some of the people building Sleak — and the question we work on: how does practice actually turn into skill?

  • Lennard Greve

    Co-Founder

  • Philipp Heideker

    CEO

  • Frederik Antenbrink

    Founders Associate

  • Lennard Greve

    Founders Associate

  • Nela Greve

    Founders Associate

  • We’re Hiring!

    Explore careers
Press

How teams develop with Sleak.

See how organizations use Sleak to scale practice, reduce manager workload, and build skills in the context of their business.

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