A/B Testing Platform
Enterprise-scale platform for centralizing A/B test documentation, communications, launch capabilities, and results across multiple games.
The Problem & My Role
As the lead front-end engineer on the A/B testing platform project, I witnessed firsthand how the existing legacy system was creating friction for teams across multiple game titles. The interface was clunky, the user experience was inconsistent, and critical features like test monitoring and enrollment management were either missing or poorly implemented.
Product managers and analysts were spending hours navigating confusing workflows, while engineers struggled with limited visibility into test statuses and user enrollments. The disconnect between what users needed and what the system provided was clear - this was fundamentally a front-end and user experience problem.
My role was to lead the complete redesign of the user interface and experience, while also architecting the API design for key features. I took ownership of creating intuitive workflows that would work for both technical and non-technical users, with a particular focus on designing the watchers system for real-time test monitoring and the enrollment manipulation features that would give teams unprecedented control over their experiments.
Frontend Architecture & Technology Choices
As the lead front-end engineer, I made strategic technology decisions that would enable us to build a scalable, maintainable platform capable of serving diverse user needs while integrating seamlessly with existing game infrastructure.
React & Component Architecture
I architected a comprehensive React component system that prioritized reusability and consistency. Created a design system with shared components that could adapt to different user roles - from technical engineers needing detailed controls to product managers requiring simplified interfaces. This modular approach was crucial for maintaining consistency across complex workflows.
State Management & Real-time Updates
Implemented Redux for complex state management with custom middleware for handling real-time updates. This was essential for the watchers feature I designed, which provided live monitoring of test status changes and enrollment fluctuations across multiple experiments simultaneously.
API Design & Integration Strategy
Led the design of RESTful APIs for the watchers and enrollment manipulation features, ensuring they could handle high-frequency updates and complex filtering requirements. Collaborated closely with backend engineers to define optimal data structures and caching strategies for real-time monitoring capabilities.
Performance Optimization
Implemented advanced optimization techniques including virtual scrolling for large datasets, intelligent caching for frequently accessed test data, and optimistic updates for enrollment changes. These optimizations were critical for maintaining smooth user experience when managing hundreds of concurrent experiments.
Frontend Development & UX Design Leadership
Over 3 years as the lead front-end engineer, I spearheaded the complete redesign of the A/B testing experience, taking ownership of critical features that became the platform's most valuable capabilities.
Watchers System - Real-time Monitoring
I led the full UX, UI, and API design for the watchers feature - a real-time monitoring system that allowed teams to track multiple experiments simultaneously. This involved designing intuitive filtering interfaces, creating responsive data visualizations, and architecting WebSocket connections for live updates. The feature became essential for teams managing large-scale experiments across different games.
Enrollment Manipulation Interface
Designed and implemented the enrollment manipulation system from the ground up, including the user interface, user experience flows, and API specifications. This complex feature allowed precise control over user enrollment in experiments, with safeguards and approval workflows. I collaborated closely with product teams to understand their needs and created interfaces that made complex operations intuitive.
Cross-functional Collaboration
Worked closely with 2 UX designers to translate user research into functional interfaces, while coordinating with 5 backend engineers to ensure API designs met frontend requirements. Established design review processes and created comprehensive component documentation to maintain consistency across the expanding platform.
Progressive Migration Strategy
Led the frontend migration from the legacy system by designing backwards-compatible interfaces that could operate with both old and new backend systems. This phased approach allowed teams to continue their work uninterrupted while we gradually rolled out improved functionality.
Performance & Scalability Solutions
Addressed performance challenges as the platform scaled by implementing sophisticated frontend optimizations: virtual scrolling for experiment lists, debounced search with caching, and intelligent prefetching for commonly accessed data. These improvements were crucial for maintaining responsiveness as usage grew 250%.
Frontend Impact & Technical Achievements
The frontend redesign and key features I led fundamentally transformed how teams interacted with A/B testing tools, delivering measurable improvements in user satisfaction, productivity, and platform adoption.
Watchers Feature Adoption & Impact
The real-time monitoring system I designed became the most-used feature on the platform, with 95% of active experiments utilizing watchers for status tracking. Teams reported 60% faster issue detection and resolution times, significantly reducing the risk of problematic experiments running unnoticed.
Enrollment Manipulation Success
The enrollment control interface I designed enabled teams to make precise adjustments to running experiments without requiring backend engineering support. This reduced experiment modification requests to the engineering team by 80% and gave product teams unprecedented autonomy in managing their tests.
User Experience Transformation
User satisfaction scores improved from 2.3/5 to 4.6/5 following the frontend redesign. The intuitive interfaces I created reduced onboarding time for new users from 2 weeks to 2 days, and support tickets related to UI confusion dropped by 85%.
Performance & Scalability Achievements
The frontend optimizations I implemented supported a 250% increase in platform usage without degrading performance. Page load times decreased by 40%, and the interface remained responsive even when displaying thousands of experiments simultaneously.
Cross-Platform Consistency
The component system and design patterns I established were successfully adopted across 8 different game titles, creating consistency in A/B testing experiences regardless of the game team using the platform. This standardization reduced training overhead and improved cross-team collaboration.