Bunget is available for hire

Bunget Alexandru Catalin

Verified Expert in Engineering

Business Intelligence Developer

Location

Bucharest, Romania

Toptal Member Since

December 1, 2021

Alexandru excels in adaptability and in the ability to connect the dots. He is passionate about data, big data, performance tuning, automation of processes, and programming challenges overall, embracing concepts such as problem prediction and solving, teamwork, and clear communication. With over six years of experience as a software developer, Alexandru's main strengths are back-end and database development, data engineering, and building business intelligence solutions.

Algorithms Data Warehouse Design Data Warehousing Data Modeling ServiceNow Visual Studio Business Intelligence (BI)Git Microsoft SQL Server Agile Software Development SQL Server 2016 SQL Server 2012 SQL Server Integration Services (SSIS)SQL Server Reporting Services (SSRS)ETL WinSCP Azure Synapse MMORPG MDX

Portfolio

Freelance

Azure Data Factory, Azure Synapse, Azure SQL, Data Warehousing, Parquet...

ING HUBS Romania

Windows PowerShell, Automation, Deployment, Private Clouds, Azure DevOps...

Google Cloud

C++, Protobuf, gRPC, Linux, Google Cloud Spanner, Envoy Proxy, Load Balancers...

Experience

Business Intelligence (BI) - 6 years ETL - 6 years Microsoft SQL Server - 6 years SQL Server Data Tools (SSDT) - 6 years Data Warehousing - 5 years C# - 3 years Azure DevOps - 3 years Microsoft Power BI - 2 years

Availability

Part-time

Preferred Environment

Visual Studio, Business Intelligence (BI), SQL Server Data Tools (SSDT), C#, Microsoft SQL Server, Microsoft Power BI

The most amazing...

...project I've built is an Android app in Java and Android Studio to simulate graph algorithms with visualizations to understand how algorithms work.

Work Experience

Senior Data Engineer

2023 - PRESENT

Freelance

Helped the client, an insurance company, develop a DWH to combine data from the two systems for continuous reporting purposes. They originally had two core systems in place, such as Oracle databases.
Built the Data Warehouse with SCD2 design in Azure Synapse Analytics and then migrated to Azure SQL database, combining data from two core systems with different structures and logic. Analyze and define requirements.
Developed ETL processes with ADF to gather data from Oracle databases to Azure Data Lake Storage Gen2 Parquet files and load the DWH daily.

Technologies: Azure Data Factory, Azure Synapse, Azure SQL, Data Warehousing, Parquet, Cloud Storage

Senior Business Intelligence DevOps

2023 - PRESENT

ING HUBS Romania

Developed CI/CD pipelines in Azure DevOps to support building and deploying business intelligence applications built with Microsoft on Prem stack (SQL Server Data Tools: SSAS, SSRS, SSIS, SQL Server 2019 ).
Automated deployment of SQL Server database, SSIS, SSAS, SSRS projects, custom SQL pre/post deployment scripts, and XMLA files through PowerShell scripts.
Worked on the automation through PowerShell scripts tasks such as configuring SQL proxies, mail alerting, and changing nonpersonal accounts passwords through Active Directory.

Technologies: Windows PowerShell, Automation, Deployment, Private Clouds, Azure DevOps, Azure Active Directory

Software Engineer

2022 - 2023

Google Cloud

Worked as part of the GCP networking team as a back-end developer, developing APIs for load balancer products in GCP.
Familiarized with and worked with Google Cloud Platform product offerings.
Worked on a feature that enhanced feedback received through CLI for users when creating HTTP(S) L7 load balancer resources.
Developed a URL map tests feature and provided E2E feedback to customers on wrong configurations of global external HTTP(S) L7 load balancer products. Used URL maps, load balancing, and Google Cloud.

Technologies: C++, Protobuf, gRPC, Linux, Google Cloud Spanner, Envoy Proxy, Load Balancers, Networking, Unit Testing, Google BigQuery, Python, Google Cloud Platform (GCP), Bash, Logging, Monitoring, Cloud Dataflow, Google Compute Engine (GCE), Identity & Access Management (IAM), HTTPS, HTTP, Terraform, Google Stackdriver

SSIS and SSRS Expert for Server Reporting Setup

2022 - 2022

Weekends Only ()

Developed an SSIS job to move files from one SFTP server to another and parse JSON files.
Configured SMTP in SQL Server and enabled mail alerts for SSIS job failures.
Implemented logging and exception handling in the SSIS package.

Technologies: SQL Server Reporting Services (SSRS), SQL Server Integration Services (SSIS), SQL Server 2016, C#, WinSCP

Business Intelligence Developer

2016 - 2021

ING HUBS Romania

Developed and maintained end-to-end reporting solutions, starting from raw data to complex dashboards for projects such as customer experience, transaction services, transaction screening, know your customer, product management, and data analytics.
Designed and developed performant ETL/ELT processes, complex data warehouses ranging from GBs to TBs of data, analysis services models, and user-friendly and efficient data display SSRS and Power BI reports.
Worked with database design principles and patterns such as star schema, snowflake schema, constellation schema, and data vault.
Created and implemented index strategies and database partitioning mechanisms to improve the performance of our databases.
Configured automated database logging, monitoring, testing tools and CI/CD pipelines in Azure DevOps.

Technologies: SQL Server Data Tools (SSDT), Microsoft Power BI, DAX, Git, Azure DevOps, C#, Windows PowerShell, Microsoft SQL Server, SQL Server 2012, SQL Server 2016, SQL Server Integration Services (SSIS), SQL Server Analysis Services (SSAS), SQL Server Reporting Services (SSRS), ServiceNow, .NET, Data Warehousing, Agile Software Development, ETL, Microsoft Excel, Microsoft Access, Visual Studio, Business Intelligence (BI), MDX, REST APIs, Azure, Data Warehouse Design, SQL, Database Performance, Data Modeling, ELT

Experience

Cryptocurrency Bot

A .NET Core REST API using C#, code-first principle using Entity Framework Core, and an SQL Server database that gathers, tracks, and analyzes candlestick chart information of cryptocurrencies from the Binance exchange platform, indicating potential buy and sell points based on specific trading strategies and indicators.

I developed the back end of the application, working closely with another front-end developer to expose the relevant API endpoints for the UI.

Competitive Programming Experience

With a background in competitive programming starting in high school, I participated in and obtained multiple awards over the years in national and international competitive programming contests. I also contributed as a problem setter and tester for national online and on-site competitions.

Graph Simulator App

An Android application built in Java and Android Studio that provides an interface to draw graphs, simulate algorithms, and view the results and steps performed. The application has multiple algorithms integrated into directed and undirected graphs and provides an easy learning experience on how those work.

I developed both the UI and the back end of the application.

Mu Online Server

A server hosting of the 3D MMORPG game Mu Online. The game files and website were pre-built. I took care of hosting and network security with custom changes to the game configuration files and website design and functionalities. The server had 50+ concurrent players at peak.

Skills

Languages

SQL, T-SQL (Transact-SQL), C#, MDX, C++, Python, Bash, XML, Java, PHP, HTML, CSS, Pascal

Tools

Visual Studio, Git, Microsoft Power BI, Microsoft Excel, BigQuery, Logging, Google Compute Engine (GCE), Android Studio, Microsoft Access, Envoy Proxy, Cloud Dataflow, WinSCP, Terraform, Google Stackdriver

Paradigms

Business Intelligence (BI), Agile Software Development, ETL, Unit Testing, Azure DevOps, Automation, Code First

Storage

SQL Server Data Tools (SSDT), Microsoft SQL Server, SQL Server 2016, SQL Server 2012, SQL Server Integration Services (SSIS), SQL Server Analysis Services (SSAS), SQL Server Reporting Services (SSRS), Database Performance, SQL Server 2008 R2, JSON, Azure Active Directory, Azure SQL, Google Cloud Spanner, Azure SQL Databases

Other

Algorithms, Data Structures, ServiceNow, Data Warehousing, Data Warehouse Design, Data Modeling, ELT, DAX, Data Engineering, Google BigQuery, Monitoring, Identity & Access Management (IAM), Deployment, Private Clouds, Azure Data Factory, Parquet, Cloud Storage, Load Balancers, Networking, Google Data Studio, HTTPS, HTTP, Azure Virtual Machines, Azure Databricks

Frameworks

Windows PowerShell, gRPC, Entity Framework Core, .NET Core, .NET, Swagger

Libraries/APIs

Protobuf, REST APIs

Platforms

Azure, Visual Studio Code (VS Code), Google Cloud Platform (GCP), Azure Synapse, Docker, Linux, XAMPP, Azure SQL Data Warehouse, Dedicated SQL Pool (formerly SQL DW)

Education

2013 - 2018

Bachelor's Degree in Computer Science

University of Bucharest - Bucharest, Romania

Certifications

DECEMBER 2023 - DECEMBER 2024

Microsoft Certified: Azure Data Engineer Associate

Microsoft

JUNE 2022 - PRESENT

Data Engineering, Big Data, and Machine Learning on GCP

Coursera

FEBRUARY 2022 - PRESENT

Networking in Google Cloud

Coursera

JUNE 2020 - PRESENT

Microsoft Certified Solutions Associate: SQL Server 2012/2014

Microsoft

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