Md Sirajus Salayhin
- ● Dhaka, Bangladesh ● -● linkedin.com/in/salayhin ● github.com/salayhin
SUMMERY
10 years of professional career including 6+ years of Data Engineering experience in data integration, ETL development,
analyzing requirements, designing and implementing various Data Warehousing projects in GCP/ AWS.
EXPERIENCE
Senior Data Engineer Level 2
Pathao Ltd | Dhaka, Bangladesh
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Spearheaded Data Lake and Data Warehouse in Google Cloud Storage and Google Big Query for stakeholders to break down
business measurements and make valuable business decisions.
Improved Data Pipeline framework which is primarily used for data collection from different data sources and transformed 1000+
attributes into Data Lake and Data Warehouse.
Collaborated with the team for developing a real-time data pipeline using Google Pub-Sub where stakeholders can see vehicles
supplied for the market in real-time
Authored a reporting framework that runs periodically on Data Warehouse and prepares more than 10 financial and operational
reports for stakeholders, which increased team productivity by 70%
Design & Implemented data models for different business verticals (rides, foods, couriers, etc) which guides stakeholders to
understand the business matrix in a single dashboard.
Executed development of a data pipeline monitoring framework to check data integrity and data quality, which reports to
stakeholders if any data quality breaks.
Maintained Data Pipelines for Data Lake and Data Warehouse, which includes an integrated monitoring dashboard for stakeholders.
Implemented data access control policy for Pathao, which improved data security within the organization and restrict any data breach
from the data warehouse
Data Engineer (Part Time)
Pipeline Security Ltd | Dhaka, Bangladesh
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June 2018 - Present
September 2019 - July 2020
Programmed data pipelines for collecting terabytes of data sets into S3 & Redshift from heterogeneous sources that contain DNS and
other useful networking information.
Transformed terabytes of semi-structured data in S3 with proper partitioning Parquet format for analysis from AWS Athena
Design and Implemented data models for DNS records to prepare marts with useful information like host, ISP, country, etc.
Launched a dashboard with Redash where users have to search and compare from billions of DNS records and get useful
information including host, ISP, country.
Senior Database Engineer
April 2018 - May 2018
Relisource Technologies Ltd | Dhaka, Bangladesh
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Supervised Database Administration for troubleshot Architectural Design With Existing Data warehouse and data integration
pipelines, which involves terabytes of data migration, replication, log shipping, database backup.
Senior Data Engineer
June 2015 - March 2018
Augmedix Bangladesh Ltd. | Dhaka, Bangladesh
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Core contributor to building Data Lake and Data Warehouse in S3 and SQL Server 2016 for the stakeholders to analyze business
metrics, and make useful business decisions.
Integrated Data Pipeline framework which is primarily used for data collection from different data sources including 3rd Party APIs,
Google Spreadsheet, MySQL and processed 100+ attributes into Data Lake and Data Warehouse.
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Coordinated with the team to build a reporting framework that runs periodically on Data Warehouse and prepares more than 20
operational reports for stakeholders.
Coded development of backend services for different stakeholders that served millions of records from data warehouses
Back end Software Engineer
June 2013 - May 2015
Nascenia Ltd | Dhaka, Bangladesh
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Deployed a B2B marketplace application with multiple sellers, buyer for farmers, for the most unique, specialty foods from around
the country (Ruby on Rails, MySQL)
Launched a web-based tool for social media data analysis and scheduled social media posts (Ruby on Rails, PostgreSQL)
Extended functionality of web-based school management system software, to efficiently manage students, teachers, employees,
courses & all the systems related to School (Ruby on Rails, PostgreSQL).
Core Maintainers of CI/CD pipelines and Cloud Infrastructure in AWS which increased development efficiency by 80%
Software Engineer
November 2011 - May 2013
Right Brain Solution Ltd | Dhaka, Bangladesh
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Co-operated with the development team for building an API for social media mobile application.
Co-Authored one of the largest auto sites in Canada owned by Toronto Star.
Programmed development of a B2C multilingual rental shop where customers could rent ski items from different shop owners.
Enhanced OMR reader for university online exams which reduced manual time upto 95%
Programmer
May 2011 - October 2011
Nanosoft | Dhaka, Bangladesh
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Simplified a web-based appointment system where users can easily manage their daily schedule and share with others.
EDUCATION
Jagannath University | Dhaka, Bangladesh | B.Sc in Physics
IICT, BUET | Dhaka, Bangladesh | Post Graduate Diploma in ICT
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Skills
Python, Ruby, SQL, Shell Script, PySpark, Apache Airflow, Google Big Query, Google Pub-Sub, AWS Redshift, SQL Server 2016,
PostgreSQL, MongoDB AWS, GCP, Data Studio, Redash
