Corporate Website Migration
Webflow
Responsive templates
Perf optimization
My Portfolio
Web Marketing & Development Leader
With 20+ years of experience building scalable, high-performance websites that drive measurable results—specializing in SEO-driven architecture, martech integrations, analytics, and GDPR-compliant solutions. Expertise also includes marketing automation, email development, and content creation, enabling teams to deliver personalized campaigns and engaging digital experiences that boost growth.
HTML5CSS3JavaScript / jQuery
PHPWordPressWebflow
React / Next.jsTypeScriptHubSpotMarketo
GA4 / GTMGoogle Search ConsoleSEO / SEM strategyCore Web Vitals (LCP, CLS, FID)Web AccessibilityGDPR / Cookie ComplianceA/B Testing
Selected Work
Web Projects
Cookie Compliance Rollout
Region-based consentCustom styles
Polycom + Risk Management Solutions
WordPressAEM
Note: These sites are no longer online due to acquisition. Selected screenshots are from Wayback Machine and included for reference.
Email Development
Responsive, Cross-Client Emails
Developer Onboarding Emails
Dark-mode safeGmail / Outlook / iOS
Case Study
Corporate Website Migration
- Goal: Migrate WordPress → new stack with better speed & SEO.
- Role: Front-end implementation, build new templates, GA4/GTM, UAT, implement cookie consent.
- Challenges:
- Migrating a large-scale site with hundreds of pages, blog posts, and forms, each requiring accurate transfer and template consistency.
- Preserving site performance during the migration, ensuring Core Web Vitals (like LCP and CLS) didn’t regress.
- Maintaining SEO integrity, including metadata, redirects, structured data, and multilingual hreflang tags, to prevent ranking loss.
- Solutions:
- Built a scalable migration framework to handle hundreds of pages, blog posts, and forms with consistent templates and reusable components.
- Conducted comprehensive testing across staging and production — validating page layouts, form submissions, redirects, and multilingual content.
- Applied performance optimization techniques (critical CSS, optimized images, preconnects, caching) to safeguard Core Web Vitals.
- Implemented a thorough SEO preservation plan with redirect mapping, metadata audits, structured data validation, and hreflang configuration.
- Coordinated with cross-functional teams to ensure a smooth cutover with minimal downtime and verified analytics/GA4 tracking.
- Impact:
- PageSpeed Insights scores improved significantly.
- Core Web Vitals stabilized — LCP reduced by 40%, CLS minimized across responsive views.
- Time on page increased as users engaged more deeply with optimized content and improved navigation.
- User engagement rose through faster load times and cleaner UX.
- Achieved +200% conversion growth while maintaining SEO visibility.
Developer Onboarding Emails
- Goal: Create a structured onboarding email series for new developer signups to guide them through first-time setup, highlight key SDKs and docs, and improve the overall customer journey.
- Role: Led front-end development of all email templates, implementing modular, reusable code. Performed full cross-browser and cross-device testing to ensure visual and functional consistency across clients (Outlook, Gmail, iOS, Android, etc.).
- Challenges:
- Ensuring compatibility with legacy Windows desktop clients.
- Designing for dark-mode rendering on newer clients.
- Balancing responsive design requirements with inline CSS constraints.
- Solutions:
- Developed responsive, hybrid email layouts using table-based structure, inline CSS, and fallback techniques to support older clients.
- Extensively tested with Litmus and on physical devices to validate rendering across 40+ browser/client combinations.
- Implemented dark-mode safe colors and image treatments to avoid legibility issues.
- Set up modular code blocks so marketing teams could easily reuse components for lifecycle campaigns.
- Impact:
- Delivered a consistent, seamless experience for developers across desktop and mobile devices.
- Improved onboarding email engagement with higher click-through rates (+15%) compared to prior generic templates.
- Strengthened the customer journey by surfacing key resources early, resulting in faster time-to-value for new developers.
Cookie Compliance Rollout
- Goal: Transition from OneTrust to Securiti.ai for cookie compliance across all digital properties, ensuring adherence to GDPR, CCPA/CPRA, and other regional privacy regulations while maintaining a consistent user experience.
- Role: Led the implementation of the new cookie consent framework across corporate websites, event microsites, third-party hosted pages, and mobile testing environments. Coordinated with Legal, Marketing, and Engineering to align on requirements and execution.
- Challenges:
- Maintaining compliance with multiple regional laws (GDPR, CCPA/CPRA, ePrivacy, etc.) simultaneously.
- Managing different site architectures (corporate domains, event microsites, and third-party integrations).
- Ensuring banners, preference centers, and consent signals rendered properly across desktop and mobile platforms.
- Solutions:
- Implemented region-aware scripts to dynamically serve consent banners and opt-out flows based on user location.
- Standardized cookie categories, descriptions, and consent preferences across all properties for consistency.
- Integrated Securiti.ai with tag management systems to block or trigger tags only after consent was given.
- Impact:
- Achieved unified cookie compliance across all web properties and mobile platforms.
- Reduced compliance risk by ensuring banners and consent logs aligned with regulatory requirements.
- Delivered a seamless, brand-consistent consent experience for users worldwide.
About
Who I Am
I am a web marketing and development professional with over 20 years of experience leading large-scale website projects and driving measurable digital growth. My expertise spans front-end development (HTML, CSS, JavaScript, WordPress, Webflow) and extends to marketing technologies such as Marketo, HubSpot, and Salesforce. I also specialize in web analytics, with deep knowledge of GA4 and Google Tag Manager, helping teams gain greater visibility into performance and conversions.
With extensive experience in GDPR and cookie compliance, I have implemented solutions like OneTrust and Securiti.ai across global sites to ensure both user trust and regulatory alignment. I have also worked with chatbots and conversational tools to improve lead capture and customer engagement. What I enjoy most is bridging the gap between technical execution and marketing strategy—creating scalable, user-friendly websites that enhance engagement and drive conversions.
“Sam is an exceptionally skilled and dedicated Senior Web Developer and Systems Architect who consistently delivers high-quality results, even under tight deadlines and challenging production scenarios.”
— William Chen, Founder at Propel Video
Get in touch
Email: samuelwan@yahoo.com
LinkedIn: linkedin.com/in/sam-wan-6457792
All screenshots are used for portfolio demonstration purposes only. Trademarks belong to their respective owners.