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Zhang Jiaxin

@jiaxinzhang

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Data engineer building MaxCompute/DataWorks/Hologres warehouses and Flink SQL streaming pipelines.

China

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What I'm looking for

I’m looking for a team where I can own warehouse + streaming pipelines—dimensional modeling, scheduling dependency governance, and data quality—then apply the same rigor to LLM data workflows, evaluation, and reliable delivery.

I built production data warehouses at Muyuan Foods, translating batch, inventory, cost, and performance definitions into data rules, and delivering ODS/DWD/DWS/DM processing with same-day validation. I’ve used dimensional modeling and SQL engineering (including GROUPING SETS) to reduce duplicated UNION ALL logic and metric drift.

On the platform side, I designed a dimensional layered warehouse on DataWorks and MaxCompute and loaded DWS aggregates into Hologres for low-latency analytics. I also led AI content data workflow and evaluation governance in a three-person venture, covering ingestion/cleaning, vector retrieval, independent evaluation, and handover of technical assets.

Experience

Work history, roles, and key accomplishments

LLM Data Engineering Lead

AI-Assisted Web Fiction Content Data Platform

Jul 2025 - Mar 2026 (8 months)

Built an AI content prototype and data pipeline from scratch, covering source ingestion, cleaning, databases, vector retrieval, human review and result feedback. Led data governance, evaluation, and handover of RMB 200K in technical assets.

Python Data Pipelines Data Governance Evaluation

Big Data Engineer

Muyuan Foods

Jul 2024 - Apr 2025 (9 months)

Built dimensional, layered data warehouses on DataWorks and MaxCompute for production profit settlement and core breeding stock data platform. Reduced breeding-stock mismatch from 6% to 1% through mismatch validation and root-cause analysis.

MaxCompute Hologres SQL Python Data Quality Grouping Sets