Software Engineer - Experimentation System

In the Strategic Experimentation & Analytics (SEA) team, we are responsible for the administration, operation, and optimization of the Experimentation Platform, a system that enables anyone at Mercari to perform A/B tests and experiments and safely and gradually roll out new features.

The team oversees the Experimentation Platform and Feature Flags systems across prod and dev, handling incident response, demos, and roadmap planning while coordinating A/B testing and feature rollouts.

Everyone can learn and acquire empirical knowledge about customer behavior and our service domain

Anyone at Mercari can run experiments at scale

Everyone can understand and trust reproducible experiments

All product changes can be rolled out or rolled back quickly and safely via Feature Flags

Continuously improve the system for access control, resource allocation, cost optimization, and usability to deliver sustained value to engineering and product teams.

Design and maintain a scalable distributed system

Implement new features on an existing code base

Scale the current product to handle 10x load

Design and Implement Agentic Workflows

Architecting for modern AI Workflows. As the organization transitions to becoming AI-native, you will be instrumental in designing and building the systems that highly efficiently support new use cases, such as automated configuration, control and data utilization via AI agents.

This role is responsible for ensuring the delivery of a highly cost-effective data analytics environment. The successful candidate will build and maintain a mechanism that naturally fosters cost-awareness among users, eliminates operational waste, and ensures that finite computing resources are precisely allocated to high-priority business tasks.