Senior Data Engineer: SQL, ETL & Legacy Modernization

Stefanini, Inc; Cuyahoga Falls, Northern (OH, KY); Hybrid; USD 171,924,000 - 184,532,000; Full time

Job summary

Stefanini, Inc in Cuyahoga Falls, OH is seeking a Data Engineer for a long-term contract engagement. You will design and optimize data pipelines using SQL Server and ETL tools, and collaborate with business teams to understand data usage.

Key tasks include reverse-engineering legacy data flows, migrating data to modern structures, validating data integrity, and delivering scalable solutions in a primarily independent, documentation-scarce environment.

Qualifications

• Bachelor's degree in Computer Science, Information Systems, Engineering, or related field (or equivalent practical experience).
• 7+ years of experience in data engineering, data integration, or related roles.
• Advanced proficiency in SQL, including complex query development, performance tuning, and large-scale data transformations.
• Strong experience working with SQL Server environments, including database design, optimization, and administration concepts.
• Hands-on experience with ETL tools such as SSIS, DTS, Informatica, or comparable platforms.
• Proven experience working within and modernizing legacy data environments, including mainframe or highly customized systems.
• Demonstrated ability to analyze, reverse-engineer, and document undocumented or poorly documented data flows.
• Experience designing and implementing scalable data pipelines and migration strategies
• Strong understanding of data validation, reconciliation, and data quality best practices.
• Ability to work independently and take ownership in ambiguous, complex environments with limited documentation.

Responsibilities

• Analyze and reverse-engineer existing legacy data flows.
• Design and build new, streamlined data pipelines using SQL Server and existing ETL tools.
• Migrate and transform data from legacy systems into more modern structures.
• Validate data accuracy and ensure integrity during migration.
• Partner with business and technical teams to understand data usage and dependencies.

Skills

Strong SQL

SQL Server

ETL tools

Legacy data environments

Independent work

Education

Bachelor's degree in Computer Science, Information Systems, Engineering, or related field (or equivalent practical experience).

Tools

SSIS

DTS

Informatica

Job description

Stefanini, Inc in Cuyahoga Falls, OH is seeking a Data Engineer for a long-term contract engagement. You will design and optimize data pipelines using SQL Server and ETL tools, and collaborate with business teams to understand data usage.

Key tasks include reverse-engineering legacy data flows, migrating data to modern structures, validating data integrity, and delivering scalable solutions in a primarily independent, documentation-scarce environment.