Siyad Mundassery

Siyad Mundassery

Data Engineer
India

About Me

Data engineer with 3 years of experience in designing, implementing and optimizing data pipelines and systems. Proficient in data extraction, transformation and loading (ETL) processes. Skilled in utilizing variety of to…

Experience

Data Engineer

Accenture
Apr 2021 - Present · 5 years 2 months

• Actively contributed to the development and maintenance of data pipelines ensuring efficient data extraction,
transformation and loading (ETL) processes.
• Developed codes using Python, PySpark and Spark SQL leveraging AWS cloud services and Git. Migrated codes written in SAS to PySpark.
• Minimized runtime by 65% and processed jobs using lower configurations by optimizing code, data loading and transformation processes.
• Worked on complex SQL queries to extract, transform and analyze data. Participated in data transformation activities including data cleaning and preprocessing tasks to ensure data accuracy and consistency.
• Developed DQ Utility for data quality and categorical checks.
• Collaborated with cross-functional teams to gather and analyze business requirements, and to identify and
troubleshoot SQL queries.
• Assisted in data quality checks, validation and testing procedures to ensure data integrity throughout the ETL process.
• Maintained detailed documentation of ETL processes, data sources and workflows, ensuring that processes were well-documented for future reference.

Data Engineer

Accenture
Apr 2021 - Present · 5 years 3 months

Actively contributed to the development and maintenance of data pipelines ensuring efficient data extraction, transformation and loading (ETL) processes.
Developed codes using Python, PySpark and Spark SQL leveraging AWS cloud services and Git.
Migrated codes written in SAS to PySpark.
Minimized runtime by 65% and processed jobs using lower configurations by optimizing code, data loading and transformation processes.
Worked on complex SQL queries to extract, transform and analyze data.
Participated in data transformation activities including data cleaning and preprocessing tasks to ensure data accuracy and consistency.
Developed DQ Utility for data quality and categorical checks.
Collaborated with cross-functional teams to gather and analyze business requirements, and to identify and troubleshoot SQL queries.
Assisted in data quality checks, validation and testing procedures to ensure data integrity throughout the ETL process.
Maintained detailed documentation of ETL processes, data sources and workflows, ensuring that processes were well-documented for future reference.

Skills

Big Data MySQL Python Structured Query Language (SQL) Amazon Web Services Data Repository GIT Version Control (GIT) Hadoop PySpark Scala Spark Apache Hive Apache Pig Amazon Web Services (AWS) Kafka Redshift S3 Spark SQL Apache Airflow Amazon Web Services (AWS) Athena EMR SageMaker CloudWatch Git Jira ETL Data Pipelines Data Extraction Data Transformation Data Loading Data Quality Data Validation Testing Data Cleaning Preprocessing Documentation Cross-functional Collaboration
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