jiaxinzhang

Data Analyst | Big Data Engineer

 

Data Engineer with nearly two years of combined enterprise data warehouse and project experience. In production, I have worked with Alibaba Cloud MaxCompute, DataWorks, Hologres, and SQL on layered data modeling, metric definition, workflow governance, data quality validation, and analytics delivery. 
Data Engineer with nearly two years of combined enterprise data warehouse and project experience. In production, I have worked with Alibaba Cloud MaxCompute, DataWorks, Hologres, and SQL on layered data modeling, metric definition, workflow governance, data quality validation, and analytics delivery. 
Data Engineer with nearly two years of combined enterprise data warehouse and project experience. In production, I have worked with Alibaba Cloud MaxCompute, DataWorks, Hologres, and SQL on layered data modeling, metric definition, workflow governance, data quality validation, and analytics delivery. 
Data Engineer with nearly two years of combined enterprise data warehouse and project experience. In production, I have worked with Alibaba Cloud MaxCompute, DataWorks, Hologres, and SQL on layered data modeling, metric definition, workflow governance, data quality validation, and analytics delivery. 
Data Engineer with nearly two years of combined enterprise data warehouse and project experience. In production, I have worked with Alibaba Cloud MaxCompute, DataWorks, Hologres, and SQL on layered data modeling, metric definition, workflow governance, data quality validation, and analytics delivery. 
Data Engineer with nearly two years of combined enterprise data warehouse and project experience. In production, I have worked with Alibaba Cloud MaxCompute, DataWorks, Hologres, and SQL on layered data modeling, metric definition, workflow governance, data quality validation, and analytics delivery. 
Data Engineer with nearly two years of combined enterprise data warehouse and project experience. In production, I have worked with Alibaba Cloud MaxCompute, DataWorks, Hologres, and SQL on layered data modeling, metric definition, workflow governance, data quality validation, and analytics delivery. 
Data Engineer with nearly two years of combined enterprise data warehouse and project experience. In production, I have worked with Alibaba Cloud MaxCompute, DataWorks, Hologres, and SQL on layered data modeling, metric definition, workflow governance, data quality validation, and analytics delivery. 
Data Engineer with nearly two years of combined enterprise data warehouse and project experience. In production, I have worked with Alibaba Cloud MaxCompute, DataWorks, Hologres, and SQL on layered data modeling, metric definition, workflow governance, data quality validation, and analytics delivery. 
Data Engineer with nearly two years of combined enterprise data warehouse and project experience. In production, I have worked with Alibaba Cloud MaxCompute, DataWorks, Hologres, and SQL on layered data modeling, metric definition, workflow governance, data quality validation, and analytics delivery. 
Data Engineer with nearly two years of combined enterprise data warehouse and project experience. In production, I have worked with Alibaba Cloud MaxCompute, DataWorks, Hologres, and SQL on layered data modeling, metric definition, workflow governance, data quality validation, and analytics delivery. 
Data Engineer with nearly two years of combined enterprise data warehouse and project experience. In production, I have worked with Alibaba Cloud MaxCompute, DataWorks, Hologres, and SQL on layered data modeling, metric definition, workflow governance, data quality validation, and analytics delivery. 
Data Engineer with nearly two years of combined enterprise data warehouse and project experience. In production, I have worked with Alibaba Cloud MaxCompute, DataWorks, Hologres, and SQL on layered data modeling, metric definition, workflow governance, data quality validation, and analytics delivery. 
Data Engineer with nearly two years of combined enterprise data warehouse and project experience. In production, I have worked with Alibaba Cloud MaxCompute, DataWorks, Hologres, and SQL on layered data modeling, metric definition, workflow governance, data quality validation, and analytics delivery. 
Data Engineer with nearly two years of combined enterprise data warehouse and project experience. In production, I have worked with Alibaba Cloud MaxCompute, DataWorks, Hologres, and SQL on layered data modeling, metric definition, workflow governance, data quality validation, and analytics delivery. 
Data Engineer with nearly two years of combined enterprise data warehouse and project experience. In production, I have worked with Alibaba Cloud MaxCompute, DataWorks, Hologres, and SQL on layered data modeling, metric definition, workflow governance, data quality validation, and analytics delivery. 

I am also building reproducible portfolio projects in batch and streaming data warehousing, lakehouse architectures, and LLM training-data governance, using Flink SQL, Kafka, Doris, Paimon, Python, and Pandas. 
I am also building reproducible portfolio projects in batch and streaming data warehousing, lakehouse architectures, and LLM training-data governance, using Flink SQL, Kafka, Doris, Paimon, Python, and Pandas. 

I enjoy translating complex business requirements into reliable, traceable data models and maintainable delivery workflows. Based in Chengdu, China (UTC+8), I am open to remote, part-time, and contract opportunities in Data Engineering, Data Warehousing, Big Data, and AI/LLM Data Engineering. 
I enjoy translating complex business requirements into reliable, traceable data models and maintainable delivery workflows. Based in Chengdu, China (UTC+8), I am open to remote, part-time, and contract opportunities in Data Engineering, Data Warehousing, Big Data, and AI/LLM Data Engineering. 


Experience: 2 years

Yearly salary: $60,000

Hourly rate: $30

Nationality: 🇨🇳 China

Residency: 🇨🇳 China


Experience

Big Data Engineer
Muyuan Foods
2024 - 2025
# Production Profit Settlement & Data Quality - Business modeling: Completed frontline rotations and translated batch, inventory, cost and performance definitions into data rules. Corrected two business-definition errors and built profit-settlement subject models for gestation and lactation stages to support historical and regional benchmark analysis. - Warehouse & quality: Delivered ODS/DWD/DWS/DM processing and downstream outputs, with same-day validation, anomaly tracing and result review. Analyzed repeated aggregation and differentiated filters across six organizational levels, using GROUPING SETS and Python-generated mappings to reduce duplicated UNION ALL logic and metric-definition drift. # Core Breeding Stock Data Platform & Mating Quality Monitoring - Architecture: Built a dimensional, layered warehouse on DataWorks and MaxCompute and loaded DWS aggregates into Hologres for low-latency analytics and dashboard serving. - Delivery: Conducted one month of on-site requirement and metric-definition work, delivered 10+ dashboards, and established mismatch validation and root-cause analysis, helping reduce breeding-stock mismatch from 6% to 1%. - Dependency governance: Mapped mixed daily/hourly dependencies across 50+ tables; completed a twice-daily scheduling migration through DataWorks lineage checks, intermediate-layer decoupling, animal-ID consistency validation and historical backfills.

Skills

big-data
data-entry
data-science
analyst
english
chinese-mandarin