Rocco Caliandro, Developer in Ceglie Messapica, Province of Brindisi, Italy
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Rocco Caliandro

Verified Expert  in Engineering

Data Engineer and Developer

Location
Ceglie Messapica, Province of Brindisi, Italy
Toptal Member Since
March 27, 2023

Rocco is an accomplished computer science graduate passionate about innovation and excellence. His outstanding academic achievements and technical skills have made him a valuable asset in the job market. He has honed his expertise in analyzing, designing, and developing computer systems. As a business intelligence engineer, Rocco is well-versed in software development. With a keen eye for detail and a client-focused approach, he creates customized solutions that meet each client's unique needs.

Portfolio

St Patrick's University Hospital
Oracle SQL, Qlik Sense, Data Engineering, Databases, Data Analysis, ETL Tools...
Infocamere
Ant Design, Java EE, HTML, JBoss, CSS, REST, SOAP...
Iconsulting
Microsoft SQL Server, QlikView 11, Tableau, Web Intelligence...

Experience

Availability

Full-time

Preferred Environment

Tableau, Web Intelligence, SQL Server Integration Services (SSIS), Microsoft SQL Server, Python, Talend ETL, Qlik Sense, Microsoft Power BI

The most amazing...

...app I've built is a Java application composed of other applications like a container, such as Wild Mission, PhotoLoader, and an interactive thermometer.

Work Experience

Data Engineer

2021 - PRESENT
St Patrick's University Hospital
  • Reverse-engineered and designed an ETL from scratch using cloud or on-premise solutions.
  • Worked on projects during nights or weekends when I was on call to provide 24/7 service to customers.
  • Documented and standardized the current data warehouse.
Technologies: Oracle SQL, Qlik Sense, Data Engineering, Databases, Data Analysis, ETL Tools, Excel 365, Reports, Dashboards, Interactive Dashboards, Reporting, Excel VBA, Data Modeling, Snowflake, Database Architecture, Data Processing, Microsoft Excel

Software Engineer

2017 - PRESENT
Infocamere
  • Fulfilled a project goal, the public digital identity system integration known as SPID in Italy, for which I was awarded benefits.
  • Tracked and fixed bugs using MantisBT as a reporting tool.
  • Managed the migration from JBoss 5 to JBoss 7 of all the internal web applications on my own.
Technologies: Ant Design, Java EE, HTML, JBoss, CSS, REST, SOAP, Enterprise Java Beans (EJB) 3, PHP, ETL Tools, VMware, APIs, Data Structures, Agile, Full-stack, Microsoft Excel

Data Engineer

2019 - 2021
Iconsulting
  • Improved data flow by optimizing queries and using indexes. The data flow now requires 20 minutes instead of two hours.
  • Created software in Java for migrating thousands of SQL Server Integration Services (SSIS) packages without doing it manually.
  • Got promoted from a business analytics specialist to a business analytics expert.
Technologies: Microsoft SQL Server, QlikView 11, Tableau, Web Intelligence, SQL Server Integration Services (SSIS), SAS, Oracle SQL Developer, Microsoft Power BI, SQL, Business Intelligence (BI), Data Warehousing, ETL, Data Visualization, Data Engineering, API Databases, Databases, Data Migration, QlikView, SharePoint, DevOps, Citrix, VMware, Azure, SQL Server Analysis Services (SSAS), Reports, Dashboards, Interactive Dashboards, Reporting, Excel VBA, Python, Financial Data, Database Migration, Cloud, Data Modeling, Snowflake, Data Integration, Database Architecture, Agile, Data Build Tool (dbt), Advisory, Consulting, Data Processing, Financial Services, Technical Leadership, Teamwork, Full-stack, Microsoft Excel

Developer Program Engineer

2016 - 2016
Wwf Italia
  • Developed an interactive touch wall responsive to gestures.
  • Built an application like a container composed of other applications, such as Quest Wild Mission, PhotoLoader, and an interactive thermometer.
  • Collaborated with a team via a repository to share code and Jira to track and solve bugs in the system.
Technologies: Java 7, Spring, MT4J, Oracle SQL, Database Migration, APIs, Data Structures

Multitouch WWF Applications

A list of Java applications in an interactive wall responsive to gestures. It is a "container" that encloses other applications like:

• An adventure game, Quest Wild Mission
• PhotoLoader that shows photos downloaded from mainly social networks
• A scrollable interactive thermometer that changes wallpaper based on the selected temperature. It also displays a 3D water molecule in the aggregation state in a magnifying glass.

Languages

Python, Java 7, Java, SQL, Snowflake, Excel VBA, HTML, CSS, PHP, SAS

Tools

Microsoft Power BI, Qlik Sense, Microsoft Excel, Tableau, Talend ETL, VMware, Apache Airflow

Paradigms

Business Intelligence (BI), ETL, DevOps, Agile, REST, Data Science

Platforms

Java EE, JBoss, QlikView 11, QlikView, Amazon Web Services (AWS), SharePoint, Citrix, Azure

Storage

SQL Server Integration Services (SSIS), Microsoft SQL Server, Oracle SQL Developer, Databases, Database Migration, Database Architecture, API Databases, Data Integration, Oracle SQL, SQL Server Analysis Services (SSAS), Graph Databases, Neo4j

Other

Data Warehousing, Data Engineering, Data Visualization, Data Analysis, Excel 365, Dashboards, Data Modeling, Consulting, Data Processing, Financial Services, Engineering, ETL Tools, Data Migration, Reports, Interactive Dashboards, Reporting, Financial Data, Cloud, APIs, Data Structures, Advisory, Teamwork, Full-stack, Web Intelligence, IT Project Management, SOAP, Enterprise Java Beans (EJB) 3, MT4 Plugins, Construction, Data Build Tool (dbt), Technical Leadership

Frameworks

Spring, MT4J, Ant Design

2019 - 2023

Master's Degree in Computer Science

University of Bari - Bari, Italy

2013 - 2017

Bachelor's Degree in Computer Science

University of Bari - Bari, Italy

AUGUST 2023 - AUGUST 2026

AWS Developer Associate

Udemy

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