Senior CRO Lead — B2B eCommerce Growth & AI Testing

Horizontal Talent; Boston (MA); On-site; USD 160,000 - 200,000; Full time

Job summary

Horizontal Talent is seeking a senior CRO expert to lead hands-on experimentation and optimization across a large B2B web environment. You will drive testing strategy, build experiments in Optimizely, and craft personalized campaigns to accelerate revenue growth.

You will collaborate with marketing, UX, design, and engineering, QA tests across devices, and validate analytics in GA4 to deliver measurable improvements in conversion and funnel performance.

Qualifications

• 6+ years of experience in digital marketing, web optimization, or eCommerce with a strong focus on hands-on CRO execution.
• Deep, practical experience with the Optimizely suite, including Optimizely Web Experimentation and Optimizely CMS.
• Strong front-end development skills with HTML, CSS, JavaScript, and/or jQuery.
• Advanced proficiency with Google Analytics 4 and user behavior tools.
• Experience working within enterprise B2B environments and complex marketing/sales funnels.
• Proven ability to improve conversion metrics and contribute to revenue or pipeline growth through experimentation.
• Excellent QA, problem-solving, and attention-to-detail skills.
• Comfort collaborating across marketing, UX, design, and engineering teams.
• Hands-on experience using CRM and marketing automation tools such as Salesforce, Marketo, or HubSpot.
• A collaborative, organized approach with strong communication and prioritization skills.

Responsibilities

• Lead the day-to-day execution of A/B, split, and multivariate tests within Optimizely.
• Build and launch brand-compliant web and page variations in Optimizely CMS.
• Develop and manage personalization campaigns for targeted audience segments.
• Use generative AI tools to speed up testing ideas, variation copy, and workflow efficiency.
• Monitor live experiments and validate tracking in Google Analytics 4.
• Review session recordings, heatmaps, and user feedback to identify friction points and testing opportunities.
• Document experiment outcomes and provide clear, data-backed recommendations for next steps.
• Optimize key conversion points across the buyer journey, including forms, pricing pages, checkout, trial nurture, and abandoned cart experiences.
• Partner with UX, design, and engineering teams to implement experiments and troubleshoot complex builds.
• Perform thorough QA across devices and browsers before tests go live.

Skills

CRO execution

Optimizely

Front-end development

GA4

B2B enterprise

Conversion optimization

QA & testing

Cross-functional collaboration

CRM automation

Communication & prioritization

Tools

HTML

CSS

JavaScript

jQuery

Job description

Horizontal Talent is seeking a senior CRO expert to lead hands-on experimentation and optimization across a large B2B web environment. You will drive testing strategy, build experiments in Optimizely, and craft personalized campaigns to accelerate revenue growth.

You will collaborate with marketing, UX, design, and engineering, QA tests across devices, and validate analytics in GA4 to deliver measurable improvements in conversion and funnel performance.