Thoughts About Digital Experience, User Behavior Analytics

Read my Latest Articles & Enhance Your Knowledge About User Behavior Analytics Tools, Digital User Experience

Roman Mohren (CEO)

CEO

Roman Mohren is the CEO of FullSession, a privacy-first UX analytics platform that combines session replay, interactive heatmaps, conversion funnels, error insights, in-app feedback, and Lift AI a workflow that helps teams identify high-impact friction and validate whether fixes actually moved the metric. Roman leads Product, Sales, and Customer Success, owning the customer journey from first touch through long-term outcomes.

Roman has spent 25+ years building and scaling B2B SaaS companies across venture-backed startups, PE-backed businesses, and public software environments from early “first dollar” execution through growth and scale. He writes from hands-on operator experience about turning behavioral signals into measurable business impact, without compromising privacy or governance.

Topics Roman writes about: session replay investigations, funnel drop-off diagnosis, activation and conversion measurement, privacy-first analytics, Lift validation (predict → prove), and building repeatable go-to-market systems.

Selected experience and outcomes:

  • Grew Userpilot to $2M ARR (9×) in 18 months as 7th employee and Head of Sales
  • Built 5280 Solutions to $5.1M ARR as Head of Sales, acquired by Bottomline Technologies
  • Drove 50%+ of company revenue (>$10M ARR) through channel partners at ESS, acquired by IHS
  • Top 10% of enterprise sales at 3E Company for three consecutive years
  • Founded TradingWhale.io, proprietary trading algorithm development, backtesting infrastructure, and automated trade execution via IBKR.

Outside of SaaS, Roman has also built systems for trading strategy research and backtesting and writes occasionally about methodology and automation at TradingWhale.io.

Connect: LinkedIn · roman@fullsession.io · fullsession.io · fullsession.io/about/

Author: Roman Mohren (CEO)

  • How to use session replay to reduce MTTR during production incidents

    How to use session replay to reduce MTTR during production incidents

    If you are on call, you already know the feeling: the alert is clear, but the user impact is not. Logs say “something failed.” Traces show “where,” not “why.” Support is pasting screenshots into Slack. Meanwhile MTTR keeps climbing. The goal: fewer minutes spent debating what users saw, and more minutes spent fixing it. This…

  • Hotjar vs FullSession for SaaS: how PLG teams actually choose for activation

    Hotjar vs FullSession for SaaS: how PLG teams actually choose for activation

    Hotjar vs FullSession for SaaS comes down to workflow fit for activation. If you need occasional UX audits, a simpler replay tool may be enough. If activation is a weekly KPI, evaluate whether the tool supports a repeatable loop: find drop-off, capture evidence, align with engineering, and validate fixes. A journey-based test beats feature checklists.

  • What Is Session Replay? How It Works & Why CRO Teams Rely on It

    What Is Session Replay? How It Works & Why CRO Teams Rely on It

    Session replay has become one of the most important tools in modern conversion optimisation and product analytics. While traditional analytics tells you what users clicked, scrolled, bounced, dropped off session replay reveals why those behaviours happened. Rather than relying purely on charts and funnels, session replay reconstructs real user sessions from your website or application,…

  • 25 Website Optimization Tools to Boost Site Performance by 100% 

    25 Website Optimization Tools to Boost Site Performance by 100% 

    Start Free Trial Guide • Optimization 25 Website Optimization Tools to Boost Traffic and Conversions in 2025 By Daniela Diaz • Updated 2025 TL;DR: In the competitive digital landscape of 2025, a “good” website isn’t enough. If your site is slow, confusing, or invisible to search engines, you are leaving money on the table. Website…

  • FullSession vs. Hotjar Heatmaps

    Skip to content Start Free Trial Comparison FullSession vs. Hotjar Heatmaps: Pick the Stack That Lifts Conversion Faster By Roman Mohren, FullSession CEO • Last updated: Nov 2025 Related reading: Heatmaps for Conversion: From Insight to A/B Wins TL;DR: Teams that pair interactive heatmaps with funnel jump-to-replay identify friction faster and protect conversion on priority…

  • Mobile vs. Desktop Heatmaps: What Changes and Why It Matters

    Skip to content Start Free Trial Responsive UX Mobile vs Desktop Heatmaps: What to Expect and How to Interpret Them By Roman Mohren, FullSession CEO • Last updated: Nov 2025 ← Pillar: Heatmaps for Conversion — From Insight to A/B Wins TL;DR: Comparing mobile vs desktop heatmaps at key steps surfaces gesture-driven friction earlier and…

  • Error-State Heatmaps: Spot UI Breaks Before Users Churn

    Skip to content Start Free Trial MoFu • Troubleshooting Error-State Heatmaps: Find Breaking Points Before Users Bounce By Roman Mohren, FullSession CEO • Last updated: Nov 2025 Pillar: Heatmaps for Conversion — From Insight to A/B Wins BLUF: Teams that pair error-state heatmaps with session replay surface breakpoints earlier, shorten time-to-diagnosis, and protect funnel completion…

  • Heatmaps for Checkout Optimization (SaaS vs. Ecommerce Walkthroughs)

    Skip to content Start Free Trial Walkthroughs Heatmaps for Checkout Optimization: SaaS vs Ecommerce Walkthroughs By Roman Mohren, CEO @ FullSession • Last updated: Nov 2025 Part of our pillar: Heatmaps for Conversion: From Insight to A/B Wins TL;DR: Teams that pair interactive heatmaps with funnel drop-off context identify checkout friction faster and protect completion…

  • Heatmaps + A/B Testing: Prioritize Hypotheses that Win

    Skip to content Start Free Trial A/B Prioritization Heatmaps + A/B Testing: How to Prioritize the Hypotheses That Win By Roman Mohren, FullSession CEO • Last updated: Nov 2025 ← Pillar: Heatmaps for Conversion — From Insight to A/B Wins TL;DR: Teams that pair device‑segmented heatmaps with A/B test results identify false negatives, rescue high‑potential…

  • VWO Competitors: 7 Alternatives Compared on Price, Features, and Fit

    VWO Competitors: 7 Alternatives Compared on Price, Features, and Fit

    If you’re comparing VWO competitors, you’ve probably already read three listicles that didn’t help you decide anything. They list features, link out for pricing, and leave you back where you started. Choosing the wrong testing tool leads to weak experiments, unclear results, and decisions based on incomplete analytics data. Teams call tests too early, miss…