Hayden Lee
Contentful
ROSWELL,GA
1
Certification
23
years of professional experience
Experienced web platform and analytics engineer with 22 years in architecting enterprise marketing websites and high-performance applications using Next.js and React. Expertise in Salesforce integrations, analytics pipelines, and data systems, with proficiency in TypeScript, JavaScript, and technical SEO. Specializes in driving cross-functional initiatives from architecture to implementation, translating data into actionable insights for marketing and sales.
Work History
Senior Full-Stack Web & Data Engineer
2 Years 10 Months- Tech stack: Next.js, React, TypeScript, JavaScript, Node.js, Sass, CSS, Tailwind CSS, HTML5, Google Tag Manager, GA4 / Google Analytics, Marketo, Salesforce, Salesforce Agentforce, Segment, BigQuery, Amazon S3, Snowflake, dbt, Terraform, Dataform, Looker Studio, Tableau, DataGrail, Demandbase, Contentful Personalization, Stitch, Google Cloud, Pub/Sub, data pipeline engineering, cross-cloud data integration, Vercel, Vercel Blob, Contentful, Contentful SDK, GraphQL, REST APIs, Upstash Redis, PostgreSQL, SQL, SSR, SSG, ISR, Qualified, Ninetailed, Datadog, Figma, Storybook, Git, GitHub, Contextful, Slack, Playwright, ESLint, Claude Code, Codex, Sentry.
- Web Platform Architecture and Performance
- Serve as a technical owner across Contentful’s global marketing web platform, spanning frontend architecture, rendering strategy, personalization, technical SEO, analytics instrumentation, marketing data flow, and platform reliability.
- Built and maintained enterprise-scale web applications with modern frontend architecture patterns and headless CMS content delivery, ensuring API-driven data flow and reusable components met production-ready implementation standards.
- Lead rendering strategy across major page templates using SSR, SSG, ISR, and server-side data fetching based on content freshness, personalization needs, SEO requirements, and performance goals.
- Applied SSR, SSG, ISR, React Server Components, client-side rendering, server-side data fetching, and cache-aware revalidation selectively based on SEO, personalization, content freshness, and performance requirements.
- Improve Core Web Vitals and platform performance through API and data-fetching optimization, caching strategy, rendering-path decisions, and production monitoring.
- Own technical SEO architecture and QA patterns, including crawl analysis, redirects, metadata, structured data, sitemap architecture, indexing rules, and page-speed optimization.
- Write structured prompts and use AI coding tools to develop, refactor, and debug Next.js and React features, refining generated code through review and testing.
- Personalization and Publishing Architecture
- Led the technical architecture and implementation of homepage hero personalization tailored to marketer and technical audiences, resulting in a 125% increase in conversions after rollout.
- Led end-to-end architecture and implementation of custom server-side personalization and ABM, enhancing native platform capabilities for account targeting, content management, and measurement. Designed audience resolution, account and industry trait handling, variant selection, fallback logic, analytics validation, and reporting guardrails.
- Architect data flow from query parameters, cookies, Demandbase traits, Ninetailed traits, and Contentful-managed account data into personalized page experiences while preserving SEO, performance, consent, and measurement accuracy.
- Designed immutable, content-hashed ABM registries in Vercel Blob with webhook-driven refresh and long-lived caching to enhance personalization reliability and ensure editorial publishing safety.
- Salesforce Agentforce and Contentful Personalization Proof of Concept
- Led the end-to-end technical architecture and development of a Salesforce Agentforce integration with Contentful and Contentful Personalization, utilizing CRM, account, industry, and behavioral context to select approved content variants for server-rendered experiences.
- Designed governance and reliability controls—including constrained candidate sets, deterministic fallbacks, consent-aware trait handling, shadow and holdout modes, and a controlled path to future live activation—to preserve editorial control, SEO, performance, and measurement quality.
- Implemented layered candidate-set, decision, and session caching to control Agentforce and CRM API volume, reduce latency, and preserve consistent personalization decisions across a visit.
- Demo recording: Agentforce Contentful Personalization POC
- Architecture, development, and overall technical direction: Hayden Lee
- UX design, content, and demo presentation: Andrew Devlin
- Agentforce Multichannel Webinar and Email Proof of Concept
- Led the end-to-end technical architecture and development of an event-triggered PoC connecting Salesforce Agentforce, Slack, Contentful, and Marketo, enabling the publishing of a webinar page to initiate a Slack request for marketers to authorize personalized email generation.
- Implemented email generation for four Salesforce-defined audience combinations based on segment and persona, using webinar content and Contextful audience and product context to tailor messaging to each audience’s needs.
- Built an approval workflow that created email drafts as Contentful entries and sent Slack notifications with preview links for marketer review and approval.
- Integrated approved Contentful publishing with email creation in Marketo campaigns, retaining final review and approval in Marketo before sending; recorded an end-to-end PoC demonstration.
- Demo recording: Agentforce Web-to-Email POC
- Architecture, development, and overall technical direction: Hayden Lee
- UX design and content: Andrew Devlin. Demo presented by Hayden Lee and Andrew Devlin
- Marketing Measurement and Consent
- Own GTM, GA4, DataGrail consent integration, Google Consent Mode, experimentation framework, A/B testing, and dataLayer implementation patterns for consent-aware event tracking, personalization/ABM measurement, Qualified interactions, form behavior, campaign attribution, and downstream reporting accuracy.
- Led architecture of DataGrail consent across global web properties, implementing GTM consent signals, Google Consent Mode, vendor and video gating, and consent-aware analytics to optimize personalization behavior.
- Analytics Engineering and Reporting
- Own architecture, implementation, and maintenance of GA4-to-BigQuery pipelines, BigQuery datasets, and SQL-based Dataform models for sessionization, traffic acquisition, page engagement, video performance, ABM engagement, user intent, journeys, form conversion, attribution, Salesforce lead outcomes, and campaign performance, powering Looker Studio dashboards.
- Built dimension, fact, and data mart models in Snowflake using dbt, preparing structured datasets for Tableau web analytics dashboards.
- Built an AI-assisted user-intent analysis application using Next.js, GA4, BigQuery, and SQL to surface likely visitor intent for each conversion, translating behavioral signals and conversion paths into clearer marketing and sales insight.
- Partner with Marketing Analytics, Data, RevOps, and Salesforce stakeholders to validate metric definitions, troubleshoot data discrepancies, align web behavior with CRM outcomes, and improve reporting trust across teams.
Lead Web Application Developer
9 Months- Lead architecture and development of React and Next.js applications backed by headless CMS platforms, API-driven content delivery, and marketing technology integrations.
- Defined frontend architecture, rendering strategy, state management patterns, component structure, analytics implementation approach, and API integration patterns for modern web builds.
- Defined frontend architecture, rendering strategy, state management patterns, component structure, and API integration patterns to enhance performance and maintainability of web builds.
- Implemented SSG, SSR, and data-fetching patterns aligned with content needs, performance goals, SEO standards, and analytics quality for optimal user experience.
- Enhanced web performance, page speed, and technical SEO by streamlining campaign tracking and implementing scalable practices across client projects.
- Alternated between frontend and backend development duties, fulfilling Full Stack development commitments on 12 projects.
Manager of Web Development
2 Years 4 Months- Tech stack: Next.js, React, TypeScript, JavaScript, Node.js, Apps Script, SASS, CSS, Tailwind CSS, HTML5, Vercel, Agility CMS, GraphQL, Upstash, PostgreSQL, WordPress, MySQL, JAMstack, Marketo, Salesforce, Qualified, Google Analytics, Google Tag Manager, Looker Studio / Data Studio, Figma.
- Managed small web engineering team, prioritizing roadmap, planning delivery, setting technical standards, intake from stakeholders, mentoring team members, and executing initiatives across web platform, analytics, personalization, and MarTech.
- Directed migration of legacy WordPress properties to headless and JAMstack architectures, improving performance, maintainability, SEO foundations, deployment reliability, and editorial workflows.
- Led architecture and implementation of modern marketing web experiences using headless CMS patterns, API-driven content, reusable components, performance-focused frontend delivery, and analytics-ready page structures.
- Owned website roadmap and delivery to enhance digital experience, drive demand generation, and optimize technical SEO, Google Analytics/GTM tracking, lead capture, campaign attribution, Marketo/Salesforce integration, and conversion rates.
- Partnered with Marketing, Design, RevOps, and leadership stakeholders to define requirements, prioritize work, resolve tradeoffs, and launch high-impact web and reporting initiatives.
- Mentored developers, reviewed technical approaches, coordinated vendors, and established QA practices to ensure accessibility, SEO, performance, analytics, and production stability.
Senior Web Developer
5 Years 5 Months- Tech stack: Crowpeak, C#, ASP.NET, JavaScript, jQuery, Node.js, AJAX, SASS, CSS, HTML5, REST API, GSAP, IIS Management, AMP page development, Apps Script, Marketo, Pardot, Salesforce, Google Analytics, Google Tag Manager, Looker Studio, Brightcove, Sketch.
- Developed and supported enterprise CMS platforms and large-scale marketing websites, enhancing performance, SEO, accessibility, and reliability of Google Analytics/GTM tracking and lead-flow accuracy.
- Led small web development team as senior technical contributor across CMS implementation, frontend development, and analytics implementation, ensuring effective production support.
- Built scalable website templates, reusable frontend patterns, content workflows, tracking enhancements, and integrations supporting enterprise digital marketing operations.
- Implemented tracking improvements and reporting automation while coordinating DNS and hosting, troubleshooting production issues, and optimizing frontend across enterprise web properties.
Earlier Career
11 Years- Developed applications using PHP, JavaScript, jQuery, Node.js, and additional technologies.
- Established skills in frontend and backend development, enhancing CMS and UX design.
- Self-motivated, with a strong sense of personal responsibility.
- Worked effectively in fast-paced environments.
- Skilled at working independently and collaboratively in a team environment.
- Developed and managed 200+ websites
Education
MFA
Skills
ETL engineering
Cloud data solutions
Data migration
Big data processing
Scripting languages
Data pipeline engineering
API architecture
Data pipeline architecture
Certification
Advanced Google Analytics Certification
Personal Information
Title: Staff Web Engineer | Marketing Platforms, Personalization, AI and Analytics
Education and Certifications
Flex Leadership Training
Timeline
Senior Full-Stack Web & Data Engineer
Contentful
01.2024 - CurrentRead More
Lead Web Application Developer
Swayden
04.2023 - 01.2024Read More
Manager of Web Development
UJET
12.2020 - 04.2023Read More
Senior Web Developer
nThrive
07.2015 - 12.2020Read More
Earlier Career
NCR, agencies, and freelance
01.2004 - 01.2015Read More
Savannah College of Art And Design
MFA
Read More