eBay
2020 – 2024 • New York, NY
Designing a marketing platform

OVERVIEW
In 2020, after the launch of the new eBay Partner Network portal, I was recruited to join eBay's marketing tech team to help them build the Unified Experience Platform (UEP). UEP aimed to be a one-stop communication platform for marketers, enabling them to:
- Create simple or complex content for on-site, email and notifications.
- Build and target specific audiences.
- Use rule-based and AI-driven decision-making to deliver the right message to the right customer at the right time.


UEP now serves as the backbone for global communications across all marketing channels at eBay. This was the hardest and most complex project I have ever worked on and one that I am extremely proud of. I feel super fortunate to have collaborated with such a talented global team.
Below are some key projects and outcomes from my time on this platform. For detailed case studies, feel free to reach out.
Please note: To protect eBay’s confidential information, message names, user names, metrics, and data points have been modified. These changes ensure confidentiality while accurately representing the platform, its impact, and the outcomes of this project.
EMAIL CREATION
After the MVP launch of the platform, we moved to the next phase to address a critical issue our marketers were facing: the tedious process of building emails. While our tool, Composer, worked well for creating individual creatives, particularly for on-site content, emails required an average of five creatives per message. This meant marketers had to repeat the entire process of creation, approval, linking, and publishing for each creative, significantly slowing down their workflow.


We built an Email Builder that allowed marketers to create and manage an entire email in one go. Key benefits included:
- Streamlined Approvals: One consolidated approval process for our designers and marketers.
- Time Saver: Simplified workflows and publishing steps.
- Improved Accuracy: A comprehensive view of all the creatives of the email in one place.
- Easier Testing: Easier creation of A/B test variants.
- Future-Proofing: Laid the groundwork for AI-generated content and email creation.
After testing we realized that we were able to reduce email creation time by over 35%.


CANVAS PREVIEW
Before the Email Builder was introduced, our marketers relied on the Canvas Preview feature to see how an email would appear with all the messages combined in one view. This feature was invaluable for visual checks and allowed marketers to send preview emails through our system's science-based pipelines, testing how they rendered in email clients and ensuring adherence to message guardrails such as audience targeting, scheduling, and placements.

GEN AI INTEGRATION
The Unified Experience Platform team paired up with eBay's incredible in-house AI team to help us deliver our first AI content generation capabilities. The goal was to scale content creation while maintaining eBay's tone, voice, and creative guidelines. Starting with text-based creatives, the system leveraged eBay’s proprietary language models to:
- Generate content adhering to eBay’s voice.
- Respect creative constraints, such as character limits and word restrictions, ensuring compliance with eBay's guidelines.
- Maintain consistency across all creatives within an email.

REPORTING
As our platform took shape, our users needed a way to measure performance directly within the platform. After all, the vision for this platform was to be a one-stop shop for our marketers and managers. Like some other areas of the platform, this feature already existed but it was another external tool that had become outdated, as it was built years ago.
We observed and spoke with our users to understand how they used the old tool and identify their main likes and dislikes. This helped us determine which crucial features needed to be ported over and what could be discarded to simplify and improve the experience.
The first tool for performance reporting was Message Reporting, which showed our marketers how the messages they created and placed on eBay’s on-site webpage, app, or email were performing. Key features included:
- Real-time search and extensive filtering, which were missing in the old tool.
- Message performance comparison, allowing marketers to select two or more messages and compare their performance over a chosen time period.
- Message performance overview and detailed views for deeper insights.
- Improved data retention and reduced latency, providing faster and more reliable access to data.




NOTIFICATIONS
Users needed a centralized place to view and manage platform notifications, as they had previously relied solely on email notifications. To solve this, we designed and built a notification center that consolidated notifications from various areas of the platform, using color-coding to indicate different levels of urgency. Later in the year, due to popular demand, we introduced a settings feature, enabling users to customize which notifications they wanted to receive.



RICH TEXT EDITOR
Our marketers lacked control over the visual appearance of creative elements. To solve this, we introduced a rich text editor that activated when text elements within creatives were highlighted during the design phase. This feature enabled on-the-fly content formatting and provided greater control over text styling.


OUTCOME
With the Unified Experience Platform we were able to consolidate all the fragmented marketing tools into a cohesive system, enabling efficient, targeted, and impactful communication. While our user base was relatively small (~350 internal users), their direct and continuous feedback allowed us to iterate quickly and refine features.
The most challenging aspect was ensuring that each new feature integrated seamlessly without disrupting other areas of UEP. Given the highly interconnected nature of the platform, even small changes in one area could have negative effects, potentially breaking workflows or creating inconsistencies elsewhere. This required careful planning, a lot of testing, and close collaboration across teams to ensure that all dependencies were accounted for and the platform remained stable and cohesive.
Below are some key wins after a year of launching and extensive beta testing. Metrics have been slightly modified to protect eBay’s confidential information.
$6.9B GMB
+$260M YoY
increase in Gross Merchandise Bought
8.5% CTR
+1.6% increase
in click-through rate
12%
fewer
communications sent with improved results
35%
reduction
in time to create and publish an email
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