Senior Data Engineer（Data Platform）

About Mico

Mico's mission is to empower every brand by building lifetime trust through humanlike technology. By 2030, we aim to be Asia's No.1 Brand Empowerment Company. Mico builds the conversational layer Japanese brands use to reach their customers — LINE, SMS/RCS, Voice AI and web — for more than 5,500 companies across finance, insurance, retail and real estate.

Our four core values guide everything we do:

Wow the Customer
Invest in Passion
Beyond Borders
Be the Change

About the Role

The Data Platform team was newly established in May 2026. Our mission is not a one-off cleanup of the data models in mmc-mono-repo — the codebase behind Mico Engage AI — but building a capability to govern them continuously.

As a Senior Data Engineer, you will own — from investigation through implementation and production rollout — the analysis of entity design and access patterns across TiDB and Aurora, the build-out of our governance toolset (seven items: local reproduction environments, external-expert collaboration, data lineage,



test reliability, benchmarks, the classification table, and ADRs), and the concrete work that takes load off TiDB: production deletion under a retention policy, event-attribute transformation, and offloading heavy aggregation to Snowflake with reverse-ETL back into Aurora.

Beyond that lies a succession of core entities such as customer and segment. This is not a greenfield analytics platform role. It is the work of safely reshaping the data model of a large system that is already running, on the basis of evidence.

The Problems We Are Facing

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18 applications share one common-lib with 2,500+ imports; the data access layer and business logic are tightly coupled

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117 Aurora + 32 TiDB entities, with scattered access patterns and no unified layering definition

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Test flakiness is a systemic problem, so coverage numbers cannot be trusted. We believe the root causes lie in parallel execution conflicts, singleton

📌 Senior Data Engineer (Bengaluru)
🏢 Mico
📍 Bengaluru