Web Developer (Growth & Conversion Optimization)
AI summary of the role
Clay is hiring a Web Developer to own the technical execution of growth-focused web experiences, from landing pages and conversion funnels to the infrastructure connecting Webflow with the marketing and sales stack.
What you’ll do
- Build high-converting web experiences in Webflow, including landing pages, conversion funnels, and website features from concept through launch.
- Architect and implement integrations, APIs, webhooks, and automation connecting web properties to CRM, analytics, and marketing automation tools.
- Design and implement A/B testing frameworks, experimentation infrastructure, and personalization engines to improve conversion rates.
- Partner with Marketing, Product, and Growth teams to translate business goals into technical solutions.
What you’ll bring
- 5+ years of professional web development experience, with at least 3 years building conversion-focused websites and landing pages.
- Expert-level Webflow development skills including advanced CMS implementations and custom code integration.
- Strong programming fundamentals in JavaScript/TypeScript, HTML5, and CSS3.
- API integration expertise with REST APIs, webhooks, OAuth flows, and connecting to CRMs and marketing platforms.
Technologies
Webflow · JavaScript · TypeScript · HTML5 · CSS3 · REST API · Node.js · React · GSAP · Three.js · Git · serverless functions
About Clay
AI-native GTM platform that combines enrichment waterfalls, intent signals, AI research agents, and workflow automation so revenue teams can design and run bespoke outbound and CRM programs.
Series C · 200–500 people
Source and classification
Internal deployment & tooling · Evidence for this classification:
integration partners, 125+ agencies, 50+ Clay clubs, and 30k members on Slack. Our culture is unique inside and outside of work. Our team members are also DJs, activists, writers, clowns, marathoners, skydivers, psychedelic therapists, social workers, and more. All employees can work for free with world-class coaches who specialize in creativity, management, and more. Our operating principles — including negative maintenance and non-attached action — guide our work. Read more about them here. Read about us in the NYT, Forbes, First Round Review, and more. Hear from our employees directly on our Glassdoor page! Web Developer (Growth & Conversion Optimization) What You'll Do Build high-converting web experiences in Webflow. You'll own the development of landing pages, conversion funnels, and website features from concept through launch. This includes writing custom JavaScript for
More from the job description
About Clay Our mission is to help organizations turn any growth idea into reality. We see growth as a creative practice, not a formula. Finding and reaching your best-fit customers takes unique ideas and constant iteration. As AI makes execution faster and tactics easier to copy, creativity is the only lasting advantage. We're already helping thousands of customers — including Anthropic, Notion, Google, and Ramp — go to market with unique data, signals, and AI research. In 2025, we raised a $100M Series C backed by world-class investors including Sequoia, CapitalG, and First Round — and crossed $100M in revenue. In 2026, we announced our second employee tender offer in 9 months at a new $5B valuation. We also launched a community equity round, for our customers, agency partners, and club members. Some things to know about us: Our community includes 11,000+ customers, 150+ integration partners, 125+ agencies, 50+ Clay clubs, and 30k members on Slack. Our culture is unique inside and outside of work. Our team members are also DJs, activists, writers, clowns, marathoners, skydivers, psychedelic therapists, social workers, and more. All employees can work for free with world-class coaches who specialize in creativity, management, and more. Our operating principles — including negative maintenance and non-attached action — guide our work. Read more about them here. Read ab [... source excerpt omitted ...] more. Hear from our employees directly on our Glassdoor page! Web Developer (Growth & Conversion Optimization) What You'll Do Build high-converting web experiences in Webflow. You'll own the development of landing pages, conversion funnels, and website features from concept through launch. This includes writing custom JavaScript for interactive elements, building CMS architectures, and pushing Webflow to its limits with advanced functionality. You'll ship quickly with a fast launch cadence, moving from brief to production-ready code without heavy handoffs. Develop the technical infrastructure that powers growth. You'll architect and implement the integrations, APIs, webhoo [... source excerpt omitted ...] ex integration issues, implementing event tracking architectures, and ensuring data flows seamlessly between Webflow, our CRM, analytics platforms, and marketing automation tools. You'll write production-grade code that's maintainable, scalable, and built to last. Own conversion optimization through code. You'll design and implement A/B testing frameworks, experimentation infrastructure, and personalization engines that enable systematic improvement of conversion rates. You'll analyze funnel data to identify bottlenecks, translate insights into technical solutions, and build features that reduce friction and drive measurable improvements in key metrics. Ship with technical ex
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