In this episode, Julia and André talk with Stefanie Grimmling and Anastasia Shvedova, the driving forces behind Upsprint, an initiative by konversionsKRAFT that brings Product and Experimentation closer together.
Together, they explore how product teams can move from output-driven roadmaps to outcome-driven impact, and why culture beats tools when it comes to real innovation.
In this episode, you’ll learn:
What Upsprint is and how it helps teams connect Product and CRO.
Why experimentation is not just about optimization, but about building smarter products.
How to escape the feature factory and reduce waste through validation and testing.
Why leadership and culture are the true enablers of experimentation.
How curiosity, humility, and evidence-based decisions can transform entire organizations.
Don’t miss the live GMS on June 16th, 2026, the event where growth-minded professionals, experimenters, and product leaders unite to push the boundaries of digital experience and growth!
Secure your tickets here: www.growthmindedsuperheroes.com
If you enjoyed this episode, like, share, and comment. Your feedback fuels future conversations and helps spread the word about the power of experimentation.
How do you build a culture of experimentation in a 150-year-old company?In this episode, Marta, Digital Experimentation Lead at A1 Telecom Austria, shares how she turned a traditional telco into a testing powerhouse driven by curiosity, courage, and customer focus.
Highlights:- Why humility is the secret ingredient of experimentation (“you’re wrong all the time”)- How Marta created a safe environment for learning and failing forward- The story behind “drops”, A1’s new way to talk about failed tests- What it takes to win buy-in from middle managementHow to experiment with experimentation and what that really means- The mindset shift from KPIs to stories and peopleLessons from transforming experimentation into a company-wide movement🎧 A must-listen for anyone driving change in large organizations or building a culture of data-driven decisions.
As Marta will be live on stage at GMS 2026 on June 16th in Frankfurt, make sure to meet her and secure your ticket now: www.growthmindedsuperheroes.com
If you enjoyed this episode, please follow, rate, and share it with your team or fellow optimizers and help more people discover the power of experimentation!
In this episode of the GMS Podcast, Julia and André sit down with Michael Richter from Robinson Club (TUI) to unpack what truly drives impact: real user insights, disciplined experimentation, and the courage to learn out loud.
What you’ll learn:
How Michael went from “A/B will prove I’m brilliant” to being humbled in three weeks, then building a sustainable experimentation habit.
Why data beats opinions and how to reframe “failure” as learning to shift company culture.
The one-man-team playbook: running ~120 tests across five brands and multiple languages without burning out.
The hotel-lobby insight that led to the “show the unavailable” experiment
Why customer interviews (not gut feel) should seed your best hypotheses.
Confirmation bias, safety nets, and how to get skeptics on board when dev resources are tight.
AI realism: designing for humans who say “I booked service, not self-service.”
If you wanna learn more or exchange, connect directly to Michael on LinkedIn or meet him in person at GMS on June 16th, 2026 in Frankfurt and secure your ticket now at: www.growthmindedsuperheroes.com
Please like, share and comment this episode to make it available to even more optimizers.
In this episode of the GMS Podcast, Julia and André sit down with John Ekman to unpack what it really takes to build an experimentation engine that drives growth, beyond tools, tactics, and vanity metrics.
Expect straight talk, hard-won lessons, and practical frameworks you can apply this week.
What you’ll learn & key highlights:
Why most “experimentation programs” stall and how to fix the cultural blockers
Evidence over opinions: turning stakeholder debates into data-driven decisions
Metrics that matter: choosing impact KPIs (and ditching misleading ones)
From wins to systems: scaling beyond single tests to compounding learning loops
Speed vs. rigor: how to balance statistical confidence with product velocity
How to get buy-in when resources are tight (and when to say “not yet”)
Real examples: experiments that surprised even seasoned optimizers
Connect with John Ekman on LinkedIn to keep the conversation going.
If this episode helped you, please like, follow, and share as it really fuels the show and helps more optimizers find it.
Don’t miss out:
Secure one of the last Early Bird Tickets for GMS 2026 (June 16th) now at: www.growthmindedsuperheroes.com
In this episode of the GMS Podcast, Julia and André sit down with Manuel Brückmann, the wizard behind optmzeAI and long-time tech brain of GMS. Manuel shares how AI is transforming experimentation, helping teams overcome complexity, avoid “prompting fatigue,” and scale their optimization programs with speed and precision.
From rookie pitfalls to future trends like autonomous testing, simulated A/B tests, and AI-powered stakeholder management, this conversation is packed with practical insights for growth-minded superheroes who want to stay ahead of the curve.
Key Highlights of this episode:
Why “shit in, shit out” still holds true in AI and how to prompt smarter
The problem of prompting fatigue and how optmzeAI makes AI accessible
Pitfalls to avoid when starting with AI in CRO and experimentation
How AI can accelerate scaling from 20 to 100+ tests per year
Future trends: simulated A/B tests, hyper-personalization, and AI as the new interface
Manuel’s personal mindset shift: asking “How can AI help me?” instead of “Can AI help me?”
Want to learn more about optmzeAI? Visit https://optmze.ai/ or connect directly with Manuel on LinkedIn.
If you enjoyed this episode, please like, share, and comment as it helps us make the GMS Podcast accessible to even more growth-minded SUPERHEROES.
In this episode of the GMS Podcast, André and Julia sit down with Melanie Müller, Senior Product Manager on the experimentation platform at Booking.com, scientist at heart, and upcoming GMS 2026 speaker.
Together, they dive deep into what it takes to scale experimentation in one of the world’s largest travel platform where testing isn’t just a tactic, but part of the company’s DNA.
What you’ll hear in this episode:
How Melanie’s journey from physics labs and petri dishes led her to scaling experiments at Booking.com
The trade-off between speed, quality, and adoption in experimentation and how Booking balances it
Why stories, not dashboards, often win leadership support for experimentation programs
The role of community, peer review, and conferences in building a culture of better decisions
Lessons on evolving from running single A/B tests to building experimentation platforms
Don’t miss the chance to hear Melanie live on stage at GMS 2026 on June 16th in Frankfurt. Grab your ticket now at www.growthmindedsuperheroes.com and secure the best price.
If you enjoyed this episode, please like, share, and comment, it helps us bring these conversations to more people who are passionate about growth, CRO, and experimentation.
In this episode of the GMS Podcast, André and Julia sit down with Morgan Brown, growth leader, co-author of Hacking Growth, and former executive at companies like Facebook, Instagram, Shopify and Dropbox.
Together, we uncover 3 key lessons for experiment-driven growth and building products that people truly value.
Morgan shares why curiosity beats certainty, how to change metrics to change culture, and what it really takes to solve root problems instead of chasing surface wins.
What you’ll discover in this episode:
Why experimentation is the most reliable path to truth in growth.
How defining problems deeply unlocks better solutions.
The power of changing measurements to shift company culture.
Why purpose-led growth creates products people truly value.
How to find your tribe of growth-minded peers and never feel stuck alone.
If this episode inspired you, please leave us a review, give it a like, and share it with your network, it helps us grow and reach more superheroes like you.
Are you still unsure what to make of AI?
Does it feel more like a threat than a tool?
You’re not alone and this episode will change the way you think about it.
In this new episode of the GMS Podcast, we take you on a playful yet deeply insightful journey into the world of AI adoption.
Starting from a place of fear and overwhelm, we explore how to turn AI into an advantage without losing your human superpowers.
Together we dive into:
The 4 levels of AI adoption from Level 0 (fear and resistance) through the “wooden sword” stage of experimenting, all the way to the “steel sword” and beyond.
How to overcome fear with curiosity and why “just try it” can be the first step toward new possibilities.
Real-world use cases: how AI cut research analysis time in half without replacing the need for human insight.
What AI can’t do (yet): the critical gaps where human empathy, context, and reading between the lines are irreplaceable.
Why critical thinking and collaboration beat blind enthusiasm: balancing skepticism and excitement.
The future of AI in organizations and how to move from scattered experiments to an integrated, mature AI practice.
This conversation will give you a new perspective on how to use AI as a creative partner rather than fear it as a rival.
Bonus resource: Ready to discover your own stage in the AI Hero Journey? Download the AI Hero Journey Cheat Sheet mentioned in the episode:
AI Hero Journey Cheat Sheet (Miro)
If this episode sparks new ideas for you, please:
Give it a like on your podcast platform
Leave us feedback – we love to hear from you
Share it with your colleagues and network so more people can level up from AI overwhelm to AI advantage.
What does it take to build a culture where failure isn’t feared but celebrated? In this episode, we sit down with Stuart Frisby, Director of Brand & Experience Design at Deliveroo and former Head of Design at Booking.com, to explore what it really means to design for impact.
From launching thousands of experiments to leading design through hypergrowth, Stuart shares hard-earned insights on experimentation, scaling teams, and the power of humility. Discover why Booking.com’s success wasn’t built on big bets but on small, fast, and frequent tests that turned data into dominance.
Key Learnings from this episode:
Why empathy for users and the business is the secret ingredient to impactful design.
How Booking.com empowered designers to launch experiments daily, with minimal red tape.
What Stuart’s most spectacular experiment failure taught him about trust, ego, and design seriousness.
The culture shift needed to move from a feature factory to a growth lab.
Why “experimentation isn’t sexy but success is.”
And here’s the best part:
Stuart will be live on stage at GMS 2026 on June 16th shedding even more light on his journey as a design leader at two of the world's top experimentation giants: Booking.com and Deliveroo. If you haven’t secured your ticket yet, better do it now at www.growthmindedsuperheroes.com.
Whether you're a designer, product owner, growth strategist or just obsessed with experimentation you’ll walk away with frameworks, stories, and mindset shifts you won’t hear anywhere else.
👉 If you enjoyed this episode, please like and share it. This helps us bring the podcast to even more growth-minded superheroes like you.
In this episode of the GMS Podcast, Julia sits down with Erin Weigel, a true pioneer in the world of product design and experimentation.
Erin shares her insights on making experimentation more approachable, fun, and impactful. From her legendary GMS talk to her bestselling book Design for Impact, Erin's unique approach to design and experimentation is revolutionizing how teams tackle innovation.
Key Highlights:
Why experimentation doesn't need to be a "boring academic exercise"
The real purpose behind Erin’s book Design for Impact and why it resonates globally
The importance of having fun while experimenting and taking smart risks
Balancing strategic tests with quick, exploratory experiments to maximize impact
Erin’s thoughts on the need for brave leadership in today’s business climate
Tools, tips, and tricks for small teams to level up their experimentation game
The ethics of experimentation: Considering the human side of every test and the stakeholders involved
Book recommendations for the summer: including Death by Screens and Emotional Targeting
Tune in for a conversation filled with practical advice, humor, and Erin’s refreshing approach to driving real change through experimentation.
For more insights, check out www.erindoesthings.com or connct with her on LinkedIn.
If you liked this episode, please like, share and comment this podcast to make it available for more growth-minded SUPERHEROES like you.
Is your agency ready for the future or strapped into the crash test dummy headed straight for the wall?
In this explosive episode, André Morys sits down with Craig Sullivan (experimentation evangelist) and Dennis van der Heijden (CEO of Convert.com) to unpack the raw, uncomfortable truths revealed in the Agency & Vendor Experimentation Ecosystem 2025 Report.
Agencies are angry. Trust is broken. The era of “running tests” is dead, and the commoditization of execution work is accelerating. If you want your agency to survive and thrive you’ll need to pivot to what only humans can deliver.
Craig and Dennis share unfiltered insights on:
Why your profit formula will change and how to adapt before it’s too late.
How AI is shifting the experimentation landscape (and what isn’t changing).
Why “trust is the true currency” between vendors and agencies and why most vendors are broke.
The uncomfortable truth: execution work is dying, strategic enablement is the future.
How to build relevance in a changing ecosystem before your clients move on.
The difference between agencies that will survive and those that will vanish.
If you’re leading an experimentation agency, working on product testing, or want to future-proof your role in a rapidly evolving landscape, this episode is for you.
Download the full Agency & Vendor Experimentation Ecosystem 2025 Report here:
https://www.convert.com/agency-research-report/
Have questions? Feel free to reach out directly to Dennis and Craig. They are always open to continuing the conversation.
If you liked this episode, we appreciate every like and share to help us reach more growth-minded superheroes like you.
In this special episode, André and Julia take you behind the scenes of GMS 2025 (growth-minded SUPERHEROES), just one week after the live event on June 18th, 2025 at Alte Oper Frankfurt.
They reflect on the energy, the people, the ideas, and the unforgettable moments that made this year’s summit one of the most inspiring yet. From LEGO towers and live music to powerful keynotes and goosebump moments. It's a raw, honest, and passionate recap from two people at the heart of it all.
Tune in to hear:
Why “purpose” and “passion” were the unofficial themes of this year
What made the LEGO Serious Play session such a surprise hit
How the rebranding resonated with attendees and why it matters
Standout moments from speakers like Fonz Morris, Talia Wolf, Cornelia Schnell, Lucia van den Brink, David Mannheim and many more
What happens after the applause: lessons that still linger
A behind-the-curtain look at curating a one-day “MBA” in experimentation, CX & growth
What’s next for GMS 2026 and why tickets are already flying
If you were there, relive the magic.
If you missed it, this is your backstage pass.
Let’s keep growing. We appreciate every like and share of this episode.
Ticket sales for 2026 are now open at www.growthmindedsuperheroes.com
Pencil in June 16th, 2026, at the Alte Oper Frankfurt.
What does it really take to build a thriving experimentation culture - not just in one company, but across an entire industry?
In this episode of the GMS Podcast, we sit down with Kelly Wortham, founder of the Test & Learn Community (TLC), former global optimization lead at Dell, and one of the most influential voices in experimentation today.
Kelly shares the story behind the birth of TLC, reveals why online and in-person connection is more crucial than ever, and unpacks the most overlooked pitfalls optimizers still fall into. From the power of asking questions to the global nuances of testing ethics, this is a conversation packed with both wisdom and warmth.
Key Learnings:
Why community-driven learning outpaces isolated experimentation
How one Slack thread led to a global shift in how we understand SRM
The reason job titles and AI fears are dominating testing conversations today
Why quant + qual is the holy grail of hypothesis building
The magic of in-person events and how they transform professional growth
How to stay grounded and purpose-driven as an optimizer
Why “start with the customer problem” should be your new mantra
Whether you're a seasoned optimizer or just getting started, Kelly's insights will challenge and inspire the way you work, connect, and grow.
👉 Join the TLC community: https://testandlearn.community/
👉 Follow Kelly on LinkedIn: https://www.linkedin.com/in/kellywortham/
If you liked this episode, please like, review and share it!
How do you move from vague, forgettable messaging to vivid copy that actually converts? In this episode, we’re joined by Amy Harrison - copywriting strategist, speaker, and founder of Write With Influence - to talk about how great copywriting intersects with experimentation, psychology, and strategy.
Amy shares her most practical tips for writing copy that resonates, stands out, and gets results - without sounding like every other “growth” company out there.
What you’ll learn in this episode:
How to swap empty impact statements for testable, vivid “do” statements
Why clarity beats cleverness - and how to write like a friend, not a marketer
The “Get. See. Do.” framework that simplifies persuasive messaging
Why long copy isn’t dead (but bad copy is)
How to use AI as a creative assistant - not a crutch
Common pitfalls of consensus messaging and how to stay bold
What teams (sales, service, product) need to be involved in message creation
Don’t forget:
GMS 2025 is just around the corner! Save 300 € on your ticket for June 18th at the Alte Oper Frankfurt by using the code ANDRE300 at www.growthmindedsuperheroes.com
If you liked Amy's insights, dig deeper and check out her website https://writewithinfluence.com/ or her https://www.linkedin.com/in/harrisonamy/https://www.linkedin.com/in/harrisonamy/.
If you enjoyed this episode, like, share, and leave us a review. Your feedback helps us grow - and helps more optimizers find the show!
In this powerful episode, growth strategist and author Chris Out shares why most organizations hit invisible ceilings - and how true business growth always starts with personal transformation.
We dive deep into:
Why every organization is a system of bottlenecks
The difference between wanting growth and being ready for it
How fear, ego, and self-deception silently hold you (and your business) back
Why installing A/B testing tools is easy - but building a growth culture isn’t
The exact moment Chris knew he had to stop lying to himself
How to structure your company (and your mindset) for extreme revenue growth
Why pre-mortems matter more than post-mortems
What leaders get wrong about the growth mindset
Chris doesn’t hold back - this episode is packed with raw truth, practical wisdom, and mindset shifts that will change how you lead and grow.
Meet Chris in person!He’ll be attending GMS (growth-minded SUPERHEROES) on June 18th in Frankfurt. Don’t miss your chance to learn from him directly.
Grab your ticket at www.growthmindedsuperheroes.com and use code ANDRE300 to save 300 €.
If you enjoyed this episode, we’d love your support:
Like, comment, and share it with your team, your friends, and fellow growth superheroes!
What happens when you mix a growth strategist, a juicy lemon, and the power of purposeful experimentation?
In this episode of the GMS Podcast, we welcome Daphne Tideman - renowned growth advisor, former Head of Growth at Heights, and co-founder of the Women in Experimentation Community.
Join us for a candid and insightful conversation on:
Daphne also shares her personal journey - from agency life to finding purpose in helping sustainable and wellness brands scale.
Meet Daphne live at GMS on June 18th in Frankfurt, alongside her co-founders Lucia van den Brink and Marcella Sullivan at the Women in Experimentation booth.
Save 300 € on your ticket with code ANDRE300 at www.growthmindedsuperheroes.com and join the movement of optimizers, researchers, and builders driving true growth!
If you loved this episode, like, share, and leave a comment -your support helps us grow this community of experimenters.
🎧 Tune in, and let’s milk the lemon - properly.
What if your obsession with perfect test designs and pixel-perfect CTAs is actually holding your experimentation program back?
In this eye-opening episode, we talk with Christoph Rottler-Lavoie, Country Manager DACH at Kameleoon, about the invisible costs of perfectionism in A/B testing - and what truly matters when it comes to experimentation velocity, stakeholder buy-in, and sustainable growth.
We dig deep into Christoph’s engineering-driven mindset, why scientific rigor needs to be balanced with pragmatic decision-making, and how to empower teams to just start testing. He shares stories from the trenches, controversial takes on significance thresholds, and powerful advice on managing fear of failure in corporate cultures.
Key Take-Aways:
* The hidden dangers of perfectionism: How striving for "perfect" experiments is actually slowing down your growth.
* Choose your weapon wisely: Not every hypothesis needs a full A/B test - pragmatic experimentation is key.
* Let go of pixel-perfection: Design alignment and visual concepts shouldn't block test velocity.
* The truth about significance thresholds: Why 95% might be overkill - and when lower confidence is acceptable.
* Parallel testing isn’t the enemy: Learn how and why to safely run multiple experiments at once.
* Culture eats testing tools for breakfast: Why psychological safety and clear stakeholder communication are make-or-break factors.
* From science to craft: The balance between rigorous statistical methodology and business realities.
* Velocity > Win rate: Why you should optimize for testing throughput, not just successful tests.
* Bayesian vs Frequentist: The (ongoing) stats war and why Bayesian might be your secret to better communication with stakeholders.
* Christoph’s top velocity hacks: Tactical insights to eliminate bottlenecks and ship faster.
🎧 Whether you're a perfectionist in recovery or a CRO lead looking to push your team forward, this episode is for you.
💎 Christoph and the Kameleoon team will also be Diamond Sponsoring Partners at GMS on June 18th - and they’re looking forward to meeting you in person!
🎟️ Save 100 € on your ticket with the code KAMELEOON100 at www.growthmindedsuperheroes.com
If you liked this episode, please like, share and leave a review. We highly appreciate your support!
What if the resistance you’re facing in your experimentation program isn’t a blocker - but your biggest opportunity?
In this episode, Julia Rumpf & André Morys sit down with Ruben de Boer, a global thought leader in experimentation culture and stakeholder alignment. Together, they explore how to make experimentation stick inside real-world organizations - and how to turn resistance into radical collaboration.
💡 In this episode, you’ll learn:
Why growth is more than a metric - it’s a mindset and a way of life
How to treat internal stakeholders like customers (and why it works)
The difference between visible and silent resistance - and how to uncover both
Why you should never call your boss a HIPPO 😉
Practical tips for stakeholder mapping & influence (without needing formal power)
How small pilots can unlock big organizational change
Why “advocating harder” backfires - and what to do instead
Meet Ruben LIVE at GMS on June 18th in Frankfurt!
Get one of the last tickets at 👉 www.growthmindedsuperheroes.com
💸 Use the code ANDRE300 to save 300 € on your ticket!
And if you liked this episode, please like, share and leave a review - this means the world to us!
Julia and André sit together with Tim Ceuppens, CMO of the Belgian brand Pit&Pit, to uncover the surprising truth about why most data presentations fail.
In this episode, Tim shares how he turned boring, ineffective reporting meetings into compelling business discussions - by transforming the way we tell stories with data. From Pixar story structures to Jurassic Park analogies and real-life corporate lessons, Tim delivers an insightful, entertaining, and incredibly practical masterclass on data storytelling.
You’ll also learn how cognitive biases hijack our dashboards, why too many numbers destroy clarity, and how to present results in a way that actually drives decisions. And yes, you’ll never watch a Pixar movie the same way again.
Key Highlights:
Why “data doesn’t speak for itself” – and how narrative bias fills in the blanks
The psychological dangers of presenting too many metrics
Tim’s 3-part framework for impactful campaign performance reviews
The “false consensus effect” and how it undermines stakeholder alignment
Real stories from Tim’s CMO journey: from chaos to clarity
How a simple dashboard structure (3-30-300) can change everything
✨ See and experience Tim live on stage at GMS on June 18th in Frankfurt!
🎟️ Save 300 € on your ticket with the code ANDRE300 at www.growthmindedsuperheroes.com.
If you enjoyed this episode, we’d love your support!
👉 Please like, share, rate, or comment - it helps us spread the word about GMS and bring more superhero insights to your ears.
In this episode, André and Julia sit down with none other than Lucia van den Brink - founder of IncreaseConversionRate.com and the driving force behind the global Women in Experimentation community.
Lucia has run over 1,000 A/B tests, influenced 55+ million visitors, and worked with both scrappy startups and billion-dollar brands. But what makes her stand out is her radical view of experimentation as a truth-seeking mechanism - one that can disrupt hierarchies, challenge egos, and even drive change in toxic company cultures.
Key Highlights:
Lucia’s first experiment at age 11: selling clay bracelets online
Why she left journalism for CRO - and how both seek truth
How introverts can leverage data to amplify their voice at work
The concept of “Collaboration Bonus” and how diverse teams outperform
Psychological safety and why it’s the foundation for innovative testing cultures
Lucia’s personal story: from PTSD to keynote speaker and community builder
Why experimentation professionals are often quiet rebels- and how to thrive in that role
🚀 See Lucia Live at GMS in Frankfurt - June 18th!She’ll be diving deep into her talk: “Unlocking the Collaboration Bonus”, showing how inclusive ideation can fuel better experiment outcomes - and measurable business growth.
🎟️ Use code ANDRE300 to save 300 € on your ticket at
www.growthmindedsuperheroes.com
If you enjoyed this episode, please like, share, and leave a review – it helps us reach more growth-minded superheroes like you.
