Gunbilegt Byambadorj
Verified Expert in Engineering
Database Engineer and Developer
Sydney, New South Wales, Australia
Toptal member since February 8, 2022
Gunbilegt is a data engineer with 10+ years of industry experience in software, web, and database development. He specializes in building data warehouses, pipelines, and models using SQL, Python, C#, Spark, Hadoop, and .NET. Gunbilegt has worked in oil and gas, minerals and mining, telecommunications, CRM, and eCommerce. He is currently a Hadoop developer with Tata Consultancy Services, and his industry experience is backed by a master's degree in information technology.
Portfolio
Experience
- Databases - 10 years
- SQL - 10 years
- C#.NET - 5 years
- .NET - 5 years
- Data Analytics - 3 years
- Data Engineering - 2 years
- Hadoop - 2 years
- Spark - 1 year
Preferred Environment
Spark, Hadoop, .NET
The most amazing...
...solution I delivered recently was fixing the root cause of frequent deadlocks in a billing system database for a telecom company.
Work Experience
Hadoop Developer
Tata Consultancy Services
- Built a data pipeline that automated the load of analytics reports using Cloudera Hadoop distribution.
- Migrated legacy reports to the data lake, which enabled self-service BI reporting.
- Configured Cloudera to automate the pipeline process.
Data Operations Engineer
Abyss Solutions
- Built a task management tool for the data tagging team using React, MongoDB, and FastAPI.
- Reduced the onboarding process from one month to one week by documenting the data operations.
- Performed ETL operations for data processing using AWS S3 and AWS Batch.
Software Developer
Ernest Fleming Machinery & Equipment Pty Ltd
- Built a business application that manages inquiries, quotations, invoices, purchases, and the inventory management process using .NET and Microsoft SQL Server.
- Reduced quotation time from one hour to five minutes and improved business efficiency.
- Built sales reports using the Metabase BI tool, making it easier to track sales goals.
Data Quality Services Lead
Rio Tinto
- Led a team of eight to improve SAP data quality globally across all business units.
- Built an internal data pipeline using Python, Luigi, Postgres, AWS EC2 and S3, and Redshift.
- Automated monthly manual jobs and reduced ETL duration from 24+ hours to less than six hours.
- Reduced the weekly ETL process from 48+ hours to less than 12 hours.
Analyst Report Developer
Rio Tinto
- Developed reports using SAP Business Warehouse and BEx Query Designer.
- Monitored ETL processes and ensured on-time completion of all the steps.
- Won an award in 2015 for being the most supportive member of the year.
Senior Software Developer
Unitel Group
- Led the data warehouse project, introduced Oracle Data Integrator for ETL, and created data marts for reporting.
- Spearheaded an initiative to build automated operational reporting and enable an ad hoc analytics system.
- Integrated a convergent billing system with existing systems.
- Revamped the legacy reseller system with AngularJS and PHP.
Software Developer
Unitel Group
- Developed business applications that managed business operations.
- Developed modules for the call center ticket management system, CRM, and corporate relations.
- Reduced the user acquisition cost by developing a CRM module to improve business efficiency.
Experience
Aldi.com.au Scraping
https://github.com/n3xus/Aldi-ScrapeEducation
Master's Degree in Information Technology
The University of Sydney - Sydney, NSW, Australia
Bachelor's Degree in Computer Science
Dickinson State University - Dickinson, ND, USA
Skills
Libraries/APIs
React, Serilog, Luigi
Tools
Cloudera, Sentry, BackOffice Cransoft, AWS Batch, BEx Reporting
Languages
SQL, C#.NET, Python, C#, PHP
Storage
Databases, MongoDB, PostgreSQL, Redshift, SQL Server 2016, Data Pipelines, Data Lakes, Amazon S3 (AWS S3), Microsoft SQL Server
Frameworks
.NET, Hadoop, Spark, AngularJS, Scrapy
Paradigms
Agile Project Management, ETL, Business Intelligence (BI), Automation
Platforms
Amazon Web Services (AWS), Docker, Oracle, Amazon EC2, Oracle Data Integrator (ODI)
Other
Data Analytics, Data Modeling, Data Engineering, Big Data, Machine Learning, Deep Learning, FastAPI, Metabase, SAP, SAP Business Warehouse (BW), DevExpress, Web Scraping, BI Reporting, Team Leadership, Data Queries, Data Warehousing, Data Marts, Leadership, Customer Relationship Management (CRM), Data
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