Mercari, inc.
Internet
BackendEngineer,ProductData
“Backend Engineer, Product Data at Mercari, inc.. Skills: catalog/metadata domain modeling, identifier mapping, SQL, data transformations, enrichment logic, data pipelines, backend/service development. Design and evolve product catalog schemas and ID/mapping strategies with clear contracts for downstream teams. Build, operate, and improve ingestion + enrichment pipelines (SQL + service code) that normalize partner data and join products with categoryrand/maker/attribute signals”
What You'll Achieve.
Balancing evolving partner schemas and changing product requirements while keeping stable, well-documented contracts for multiple downstream consumers; Operating high-impact catalog systems with reliability expectations (correctness, freshness, rollback safety) and meaningful quality KPIs across large, heterogeneous datasets
Industry & Context.
on-call/operations
What They're Looking For.
Must Have
catalog/metadata domain modeling (product, SKU, category, brand/maker, attributes) and identifier mapping, SQL and experience building data transformations/enrichment logic, Experience operating data pipelines or data-heavy services with validation, monitoring, and incident readiness, Ability to write clear documentation and drive cross-team alignment on contracts and rollout plans, Proficiency in backend/service development and ownership mindset (design, implementation, on-call/operations)
Nice to Have
Experience integrating and operating long-lived external partner data integrations, Multilingual data modeling / i18n workflows for catalogs and attributes, Experience with event-driven pipeline patterns (pub/sub fanout, retries, DLQs)
What You'll Do.
Design and evolve product catalog schemas and ID/mapping strategies with clear contracts for downstream teams
and improve ingestion + enrichment pipelines (SQL + service code) that normalize partner data and join products with categoryrand/maker/attribute signals
Maintain category taxonomy and mapping datasets/configuration
including safe fallbacks for unmapped cases
Define attribute requirements and quality rules per category to support product discovery surfaces (facets
Establish data quality guardrails (validation
freshness monitoring) and close operational gaps (release/tag workflows
predictable partner support)
Improve internal tooling for operators/admins and maintain multilingual readiness (i18n) for catalog/attribute labels when needed
How You'll Work.
Team & Collaboration
clear contracts for downstream teams; drive cross-team alignment on contracts and rollout plans
Communication Scope
Ability to write clear documentation
Applying for this Backend Engineer, Product Data role?
Most applicants get filtered before a human reads their resume. See if yours makes the cut.
ANONYMOUS · UNFILTERED
What do employees actually say about Mercari, inc.?
Real rants from real employees. Read before you apply.