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)

  • UX Audit: The Ultimate Guide for Website Owners

    UX Audit: The Ultimate Guide for Website Owners

    Start Free Trial UX and conversion UX Audit: The Ultimate Guide to Diagnosing and Fixing Your Website By FullSession Team • 2025 Edition Related reading: Heatmaps for Conversion: From Insight to A/B Wins BLUF: Your website has traffic, but does it have conversions. If visitors are bouncing, abandoning carts or ignoring key calls to action,…

  • Looking for the Best Mouseflow Alternative? Check this out!

    Looking for the Best Mouseflow Alternative? Check this out!

    Start Free Trial Product analytics and UX Top 5 PostHog Alternatives for SaaS Product Teams in 2025 By FullSession Team • Updated for 2025 Related reading: Heatmaps for Conversion: From Insight to A/B Wins BLUF: PostHog is a popular all in one platform for engineers who want to build their own analytics stack. For product…

  • 5 PostHog Alternatives and Competitors to Test This Year

    5 PostHog Alternatives and Competitors to Test This Year

    Start Free Trial Product analytics and UX Top 5 PostHog Alternatives for SaaS Product Teams in 2025 By FullSession Team • Updated for 2025 Related reading: Heatmaps for Conversion: From Insight to A/B Wins BLUF: PostHog is a popular all in one platform for engineers who want to build their own analytics stack. For product…

  • FullSession vs. Hotjar Heatmaps

    FullSession vs. Hotjar Heatmaps: Which Wins for SaaS? 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…

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

    Mobile vs. Desktop Heatmaps: What Changes & Why Skip to content Start Free Trial Responsive UX Mobile vs. Desktop Heatmaps: What Changes and Why It Matters 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…

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

    Error-State Heatmaps: Catch UI Breaks Before 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…

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

    Checkout Heatmaps: 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…

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

    Heatmaps + A/B Testing: Prioritize Winners Faster :root{–fs-max:920px;–fs-space-1:8px;–fs-space-2:12px;–fs-space-3:16px;–fs-space-4:24px;–fs-space-5:40px;–fs-radius:12px;–fs-border:#e6e6e6;–fs-text:#111;–fs-muted:#666;–fs-bg:#ffffff;–fs-accent:#111;–fs-accent-contrast:#fff} @media (prefers-color-scheme: dark){:root{–fs-bg:#0b0b0b;–fs-text:#f4f4f4;–fs-muted:#aaa;–fs-border:#222;–fs-accent:#fafafa;–fs-accent-contrast:#111}} html{scroll-behavior:smooth} body{margin:0;background:var(–fs-bg);color:var(–fs-text);font:16px/1.7 system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif} .container{max-width:var(–fs-max);margin:0 auto;padding:var(–fs-space-4)} .eyebrow{font-size:.85rem;letter-spacing:.08em;text-transform:uppercase;color:var(–fs-muted)} .hero{display:flex;flex-direction:column;gap:var(–fs-space-2);margin:var(–fs-space-4) 0} .bluf{background:linear-gradient(180deg,rgba(0,0,0,.04),rgba(0,0,0,.02));padding:var(–fs-space-4);border-radius:var(–fs-radius);border:1px solid var(–fs-border)} .cta-row{display:flex;flex-wrap:wrap;gap:var(–fs-space-2);margin:var(–fs-space-2) 0} .btn{display:inline-block;padding:12px 18px;border-radius:999px;text-decoration:none;border:1px solid var(–fs-border);transition:transform .04s ease,background .2s ease,border-color .2s ease,box-shadow .2s ease} .btn:hover{transform:translateY(-1px)} .btn:active{transform:translateY(0)} .btn:focus-visible{outline:2px solid currentColor;outline-offset:2px} .btn-primary{background:var(–fs-accent);color:var(–fs-accent-contrast);border-color:var(–fs-accent)} .btn-primary:hover{box-shadow:0 6px 18px rgba(0,0,0,.15)} .btn-ghost{background:transparent;color:var(–fs-text)} .btn-ghost:hover{background:rgba(0,0,0,.05)} .sticky-wrap{position:fixed;right:20px;bottom:20px;z-index:50} .sticky-cta{background:var(–fs-accent);color:var(–fs-accent-contrast);border:none;border-radius:999px;padding:10px 18px;display:inline-flex;align-items:center;gap:8px;box-shadow:0 10px 24px rgba(0,0,0,.2)}…

  • Real-Time Heatmaps for Product Launches: First 48 Hours Checklist

    Real-Time Heatmaps: First 48 Hours Launch Checklist Skip to content Start Free Trial Checklist Real-Time Heatmaps for Product Launches: Your First 48 Hours Checklist By Roman Mohren, FullSession CEO • Last updated: Nov 2025 Pillar: Heatmaps for Conversion: From Insight to A/B Wins TL;DR: Teams that monitor real-time heatmaps during the first 48 hours of…

  • Heatmaps for Conversion: From Insight to A/B Wins

    Heatmaps for Conversion: From Insight to A/B Wins Skip to content Start Free Trial Guide Heatmaps for Conversion: From Insight to A/B Test Wins By Roman Mohren • Last updated: Nov 2025 BLUF: Teams that pair interactive heatmaps with funnel context and quick validation tests ship fixes faster and see directional gains in form completion…