Who is Johannes Karjula?
Johannes Karjula is a Finnish creative multipreneur and SaaS founder with over 15 years of experience in entrepreneurship. He is the Founder and CEO of Trustmary, a customer experience and online review platform helping service based businesses grow through authentic customer feedback. He is widely regarded as one of the world’s leading experts in leveraging social proof and developing customer experience as a strategic growth driver for businesses. He has been involved in founding, developing, and selling multiple companies and business units, and currently holds ownership positions and board roles in several companies. Johannes holds a Master of Science in Economics in Information Systems from the University of Jyväskylä and is an officially approved board member (HHJ®). Alongside his entrepreneurial work, he gives keynote talks and acts as an advisor on entrepreneurship, SaaS, customer experience, online marketing, and B2B sales.

Johannes Karjula
- Creative Multipreneur since 2010
- Founder and CEO at Trustmary
- M.Sc.Economics (University of Jyväskylä, Information Systems)
- Officially Approved Board Member (HHJ®)
- Keynote & Advisory Topics: Entrepreneurship, SaaS, Customer Experience, Online Marketing, B2B Sales
- Contact me on LinkedIn
Articles, Interviews and Podcasts Featuring Johannes Karjula
- Johannes Karjula, Author at Trustmary
- Johannes Karjula on Caleido.io Podcast: PLG
- Trustmary’s Journey in 2023
- Same problem, new tricks, Trustmary in 2022
- How to Grow Your HVAC Business Through Customer Experience
- Bad roofer reviews: How to React
- Reviews and Feedback in Home Improvement Companies: Survey Results and Insights
- Gathering Customer Insights: Made Simple for All Companies
- Feedback Points Explained: Turning Feedback into Testimonials
- CX Technology and What You Should Know About It
- Why Customer Experience Matters Even in B2B SaaS
- Why are my Google reviews disappearing? Everything we know so far.
- Trustmary on a New Path: Manifesto, Values, and Future Vision
- Digital Customer Experience: 101
- How to Track Customer Feedback to Improve Your Business
- Online Reputation Management 101
- How Do You Qualify Inbound Leads
- Customer Experience Design and Customer Journey Mapping
- All you need to know about customer loyalty: The definitive guide
- How Employee Experience Affects Customer Experience
- How Can A Customer Feedback Loop Help Your Business?
- The Peak-End Rule and How It Affects Customer Experience
- Customer Experience Vs. User Experience
- 5 Customer Experience Management Software
- How Customer Feedback on Service Actually Works
- Good Customer Experience Examples to Learn from
- 4 Customer Satisfaction Metrics That Will Tell the Truth
- How to Improve Customer Experience? 7 Actionable Strategies
- Reviews and Feedback for Sales: How and Why?
- 3 Techniques For Measuring Customer Experience
- Satokausikalenteri: Video Testimonials Boost Sales
- Case: 20% More Sales with Video Reviews
- Johannes Karjula, co-founder of Trustmary, Caleido.io Podcast (Spotify)
- Johannes Karjula on Caleido.io Podcast: PLG, Trustmary summary page
- Johannes Karjula, co-founder of Trustmary, Innohub listing
- #82 Kansainvälisen softamyynnin erikoispiirteet feat. Johannes Karjula, Trustmary Group, #MYYNTIPODI (Spotify)
- Scaling SaaS: how customer insights drive SaaS growth with Johannes Karjula @Trustmary, saas.unbound (Spotify)
- Scaling SaaS: how customer insights drive SaaS growth with Johannes Karjula, saas.group article page
- Scaling SaaS: how customer insights drive SaaS growth with Johannes Karjula @Trustmary (YouTube)
- Founders’ Point of View Podcast-series (Spotify show)
- Founder Stories: Johannes Karjula, Trustmary, Vendep
- Experts Share What To Consider When Running A SaaS Startup, TechRound
- Kasvustrategia 1/5: PLG, Case Trustmary, SaaS Finland
- Johannes Karjula: Oman ajankäytön johtaminen on tärkeä arvovalinta, Johtaja on Media
- Holvi Podcast: Yrittäjän haasteita on turha pelätä
- A-lehdet Satokausi Median osakkaaksi, Satokausi.fi
- A-lehdet omistaa nyt Satokausi Median kokonaan, uusi hallitus ja toimitusjohtaja nimitetty, A-lehdet
- Satokausi-kartta paljastaa Suomen parhaat mustikka-, puolukka- ja sieniapajat, Satokausi.fi
- Satokausikalenteri, Wikipedia
- Alumniesittelyssä Johannes Karjula, Jyväskylän yliopisto
- Central Finland’s Young Entrepreneur of the Year 2019 is Johannes Karjula (Yrittäjät.fi)
- Johannes Karjulasta tuli yrittäjä, kun tarkoituksena oli kustantaa omat opinnot (Yrittäjät.fi)
- Johannes Karjula ehdolla Vuoden nuoreksi yrittäjäksi (Raahen Seutu)
- Young Entrepreneur of the Year finalists selected (Yrittäjät.fi)
- Alumnihaastattelussa Johannes Karjula (SoundCloud / Jyväskylän yliopisto)