Summary
Overview
Work History
Education
Skills
Certification
Timeline
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Claudiu Neacsu

Claudiu Neacsu

SQL/ETL Developer
Timisoara

Summary

Experienced with ETL processes and data transformation techniques essential for optimizing data workflows. Utilizes advanced SQL and data warehousing skills to ensure seamless data integration and improvement in data quality. Holds an AWS Certified Cloud Practitioner certification and has hands-on experience with AWS cloud computing services, applying cloud solutions to enhance data workflows and system scalability. Track record of effective collaboration with cross-functional teams and adaptability in dynamic project environments.

Overview

10
10
years of professional experience
2
2
Certifications
3
3
Languages

Work History

SQL/ETL Developer

Waterford
Utah, UT
04.2020 - 07.2025
  • Enhanced ETL processes by optimizing complex SQL queries and streamlining data extraction procedures.
  • Increased data accuracy by implementing thorough validation checks and error-handling mechanisms.
  • Implemented proactive monitoring solutions for ETL processes, identifying potential bottlenecks before they impacted users.
  • Wrote and optimized in-application SQL statements.
  • Reduced processing time for ETL tasks through the implementation of parallel execution strategies.
  • Developed custom reports for business stakeholders, providing valuable insights into key performance metrics.
  • Streamlined data flow between multiple systems through the
  • Utilized diverse technologies including Redshift, SQL, MySQL, Oracle, PostgreSQL, DynamoDB, Jasper Reports, Power BI and Talend.
  • Utilized Agile methodologies to enhance project workflow
  • Collaborated with cross-functional teams to design robust data models that catered to diverse reporting needs.
  • Designed integration tools to combine data from multiple, varied data sources such as RDBMS, SQL and big data installations.
  • Utilized code versioning systems such as GIT/Intellij to reduce development times.

SQL Database Administrator

Atos Global IT Solutions And Services
04.2017 - 04.2020
  • Worked in a great team, ensuring high system availability and resolving critical tickets related to the databases under our management.
  • Developed custom database objects, stored procedures, and delivered application support.
  • Maintained complex T-SQL queries, views, and stored procedures in multi-database environment .
  • Followed standard practices for migrating changes to test and production environments.
  • Ensured high availability of databases, utilizing clustering techniques and backup/restore solutions.
  • Optimized database performance by conducting regular maintenance and implementing indexing strategies.
  • Provided 24/7 support for critical database systems, quickly resolving any incidents that arose to minimize disruption to business operations.
  • Administered, supported, and monitored databases by proactively resolving database issues and maintaining servers.
  • Implemented security measures to protect vital business data.
  • Assisted multiple customers on-site in Dusseldorf and Barcelona.

SQL Developer

Imobiliare.ro
10.2016 - 04.2017
  • Enhanced database performance by optimizing SQL queries and indexing strategies.
  • Developed efficient stored procedures for complex business logic, reducing processing time and improving system stability.
  • Provided technical support for end-users by addressing SQL-related issues, enhancing overall user satisfaction with the application.
  • I was responsible for developing and maintaining stored procedures, as well as creating various reports to support the real estate market in Romania. My work focused on ensuring data accuracy, optimizing SQL queries, and delivering insights that supported business decisions.

Junior Database Administrator

Sarmet
06.2015 - 10.2016
  • This was my first role, where I gained significant experience in writing SQL scripts and managing databases.
  • Here, I gained hands-on experience with Oracle, Microsoft SQL Server, and MySQL databases.
  • Monitored and maintained large-scale production systems, handling millions of call records, and quickly resolving critical errors to ensure high availability.
  • Collaborated across time zones with team members in the USA, developing strong teamwork and communication skills.

Education

Bachelor of Science - Computer Science

Timisoara Polytechnic University
Timișoara, Romania
04.2001 -

Skills

Data warehousing(Redshift)

AWS Cloud Practitioner

SQL programming(MSSQL, Oracle, MySQL, PostgreSQL, Redshift))

Data migration

Data validation

Data security

Performance tuning

Analytical thinking

Report generation( Jasper Reports, Power BI)

NoSQL databases(DynamoDB)

Disaster recovery planning

Version control with Git and Bitbucket

Error handling

ETL modeling and processing(Talend)

Working with agile methodologies

Certification

AWS Cloud Practioner

Timeline

AWS Cloud Practioner

09-2025

SQL/ETL Developer

Waterford
04.2020 - 07.2025

SQL Database Administrator

Atos Global IT Solutions And Services
04.2017 - 04.2020

SQL Developer

Imobiliare.ro
10.2016 - 04.2017

Querying Microsoft SQL Server 2012/2014

02-2016

Junior Database Administrator

Sarmet
06.2015 - 10.2016

Bachelor of Science - Computer Science

Timisoara Polytechnic University
04.2001 -

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Claudiu NeacsuSQL/ETL Developer