Simon Leimeister

Head of Ecommerce CRO & Onsite | Mister Spex ๐Ÿ‘“ | Personalization | Agentic Commerce

Greater Munich Metropolitan Area

About

Ecommerce leader with 9+ years of experience across CRO, SEO, online marketing and onsite optimization. I currently lead Ecommerce Conversion & Onsite Operations at Mister Spex, focusing on webshop performance, CRO, personalization, onsite operations and business-side Product initiatives, including early work on future commerce models such as agentic commerce. --- My work sits at the intersection of ecommerce, customer experience and future commerce innovation. I focus on improving digital commerce experiences through conversion funnel optimization, A/B testing, personalization, landing pages, merchandising execution and scalable onsite initiatives. As the business counterpart to Product and Tech teams, I translate customer needs and commercial opportunities into business requirements, prioritization input and measurable webshop improvements. Over the past years, I have built and scaled continuous optimization programs across traffic, onsite experience and conversion. This includes delivering sustained double-digit organic growth, driving recurring 10โ€“20% conversion rate improvements through data-informed CRO and personalization initiatives, generating high-value leads such as appointment bookings and newsletter sign-ups, and supporting multiple SEO and online-shop migration projects with minimal disruption. While SEO remains a strong part of my background, my current focus is broader: building and optimizing the ecommerce conversion engine โ€” from onsite experience and operations to personalization, experimentation, shop migration and emerging commerce opportunities. I enjoy building empowered teams, creating clear strategic direction and turning complex digital challenges into actionable initiatives with measurable business impact. Outside of work, Iโ€™m passionate about endurance sports and outdoor adventures โ€” from marathon running and hiking in the Alps to bikepacking and reading.

Experience

  • Mister Spex (3 yrs 11 mos)
    • Head of Ecommerce Conversion & Onsite Operations
      Apr 2026 - Present ยท 4 mos

      Leading Ecommerce Conversion & Onsite Operations at Mister Spex, with ownership of webshop conversion performance, CRO, personalization and onsite execution. I represent the business perspective in collaboration with Product and Tech, translating customer insights and commercial opportunities into business requirements, prioritized initiatives and A/B tests โ€” with a focus on conversion excellence, operational quality and preparing the webshop experience for future commerce models, including agentic commerce.

    • Head of SEO and Conversion Optimization
      Jan 2025 - Jun 2026 ยท 1 yr 6 mos

    • Teamlead SEO & Conversion Optimization
      May 2023 - Jan 2025 ยท 1 yr 9 mos

  • Freelancer at Nebenberufliche Projekte
    Jan 2018 - Present ยท 8 yrs 7 mos

    - SEO Consulting - SEO Trainings - Local SEO - SEO Copywriting

  • Jochen Schweizer mydays Group (3 yrs 6 mos)
    • Teamlead SEO & Online Redaktion
      Apr 2020 - Sep 2022 ยท 2 yrs 6 mos

    • Online Marketing Manager SEO
      Apr 2019 - Apr 2020 ยท 1 yr 1 mo

  • Junior SEO Manager at mydays GmbH
    Dec 2017 - Mar 2019 ยท 1 yr 4 mos

  • Transdev GmbH (1 yr 3 mos)
    • Projektkoordinator Digital
      Jun 2017 - Nov 2017 ยท 6 mos

    • Marketing Trainee
      Sep 2016 - May 2017 ยท 9 mos