Sammie Walker

Chief Marketing Officer | Cybersecurity & SaaS | GTM Transformation, Platform Scale & AI-Driven Growth

San Francisco Bay Area

About

I’m a Chief Marketing Officer with deep experience leading go-to-market, demand generation, and brand transformation for PE-backed and growth-stage cybersecurity SaaS companies. I specialize in rebuilding marketing organizations, operationalizing metrics-driven demand engines, and applying AI-informed strategies to drive pipeline, bookings growth, and long-term value creation. I’ve led major GTM and platform repositioning initiatives at Deepwatch, Zimperium, Bugcrowd, and Infoblox, partnering closely with CEOs, executive teams, and investors to modernize brand narratives, sharpen market positioning, and scale global demand in highly competitive markets. My experience spans both VC-backed, category-defining companies and PE-backed value-creation environments, allowing me to operate effectively across different capital models and growth stages. At Deepwatch, I repositioned the company around an AI + Human Precision MDR platform, developed Agentic SOC narratives, and built a modern GTM engine that sourced 62% of new-logo pipeline. At Zimperium, I unified five products into a mobile-first security platform and drove triple-digit growth across PR impact, pipeline contribution, and organic visibility. At Bugcrowd, I transformed the brand from a bug bounty vendor into a multi-service cybersecurity platform, contributing to 110%+ net revenue retention. At Infoblox, I helped scale the business from $175M to $440M in bookings, including building and scaling a $0 to $100M security SaaS portfolio while repositioning the company from a legacy networking provider to a modern security leader. My work sits at the intersection of AI-enabled GTM execution, demand generation, and platform storytelling, with a strong focus on commercial accountability and operating rigor. To further deepen my applied understanding of AI, I’m currently enrolled in the University of Texas at Austin’s AI for Business Applications program, focused on translating AI capabilities into practical operating leverage and measurable business outcomes. I thrive in transformation-oriented environments where clarity, alignment, and disciplined execution are critical, and I’m passionate about helping cybersecurity and AI-driven companies unlock their next phase of growth.

Experience

  • Chief Marketing Officer at EfficientIP
    Jun 2026 - Present · 2 mos

    As Chief Marketing Officer at EfficientIP, I lead global marketing strategy for a leading provider of network automation, DNS security, and DDI solutions. EfficientIP helps organizations simplify, secure, and scale the critical network infrastructure that keeps businesses running across increasingly complex hybrid, multi-cloud, and AI-enabled environments. In this role, I am focused on strengthening EfficientIP’s market position, accelerating demand generation, expanding customer engagement, and supporting the company’s next phase of growth following its acquisition by Francisco Partners.

  • Chief Marketing Officer at Deepwatch
    Jan 2025 - Dec 2025 · 1 yr

    Role concluded following company restructuring / RIF

  • Chief Marketing Officer at Zimperium
    Dec 2022 - Jun 2024 · 1 yr 7 mos

  • Chief Marketing Officer at Bugcrowd
    Mar 2021 - Jan 2023 · 1 yr 11 mos

  • EVP and Chief Marketing Officer at Infoblox
    Mar 2016 - Mar 2021 · 5 yrs 1 mo