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Hamidreza Hajimirza

Hamidreza Hajimirza

Certified

Data Engineer

Freelance

Technologies

My Portfolio Highlights

My New Course

Introduction to SQL

My New Track

Data Analyst

My New Course

Introduction to SQL

Quantitative detective, solving mysteries and uncovering truths in data.

My Work

Take a look at my latest work.

DataLab

Exploring Astronaut Activities in SQL - Solution

DataLab

Create a Sankey Diagram

DataLab

Live Training - Time Series Analysis in Python (Solution)

DataLab

Exploring Astronaut Activities in SQL - Solution

My Certifications

These are the industry credentials that I’ve earned.

Data Analyst Professional

Data Analyst Professional

SQL Associate

SQL Associate

DataCamp Course Completion

Take a look at all the courses I’ve completed on DataCamp.

Courses

Introduction to SQL
Introduction to Power BI
Intermediate SQL
Intermediate Python

My Work Experience

Where I've interned and worked during my career.

Asan Pardakht | Nov 2022 - Mar 2025

Data Engineer

• Revolutionized data processing with the flexibility on-premise of Spark clusters, ensuring 100% data integrity and uninterrupted accessibility and successfully extracted and loaded data into Hadoop clusters, achieving a 30% improvement in disk optimization. • Designed and implemented numerous automated data pipelines, streamlining data ingestion and processing workflows to efficiently handle terabytes of data, significantly enhancing operational efficiency and scalability. • Directed the creation and upkeep of over five data marts adhering to a hybrid dimensional and Data Vault modeling on on-premise SQL Server while implementing industry best practices in data warehousing and database management for optimal efficiency organization. • Overhauled data indexing strategies across SQL server databases, accelerating query speeds and enabling seamless data access for a team of 5+ analysts, driving more efficient decision-making. • Instituted standardized SQL table structures with rigorous validation protocols, incorporating lineage keys and data cut-off points; enhanced data accuracy rate by 100%.
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Asan Pardakht | Dec 2020 - Nov 2022

Data Analyst

• Developed user-friendly and insightful dashboards tailored to the needs of more than 40 company members, enhancing accessibility and facilitating data-driven decision-making. • Defined and tracked key performance indicators (KPIs) thuorugh analyzing a staggering volume of 10 million daily transactions, ensuring accurate representation and insightful analysis for informed decision-making. • Conducted in-depth analysis and designed analytical frameworks to extract actionable insights from datasets exceeding 100 million rows, driving informed decision-making. • Collaborated extensively with more than 4 cross-functional teams to discern their unique data requirements and strategically prioritize analysis projects and ensured that data initiatives were closely aligned with broader business objectives. - KPIs: LTV, churn rate, revenue per order, ROI of marketing campaigns, conversion rate and click through rate, product cross ownership, market share, market size, market growth

INBEET | Aug 2018 - Jan 2019

Data Analyst Intern

• Developed foundational skills in data science, including statistical analysis, data cleaning, data visualization, and machine learning. • Assisted senior analysts in implementing financial charts using machine learning algorithms, gaining exposure to the latest trends. • Contributed to initiatives aimed at solving problems and identifying opportunities to apply data science within the finance sector.

My Education

Take a look at my formal education

Master's degree, Engineering/Industrial ManagementUniversity of Tehran | 2018
Bachelor of Arts (B.A.), Engineering/Industrial ManagementShahid Beheshti University | 2015

About Me

Hamidreza Hajimirza

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