ETL Developer

Job Title: ETL Developer
Location: Mclean, VA
Type: Contract
Security Clearance: Due to a Federal contract, U.S. Citizenship or Green Card required, with the ability to obtain a Public Trust clearance
Contact: Crystal.dinnocenti@systemone.com
RESPONSIBILITIES

• Design, develop, test, and maintain enterprise ETL/ELT solutions to integrate data from multiple source systems
• Develop scalable and high-performance data pipelines for batch and near real-time data processing
• Build and maintain data integration workflows using modern ETL tools and cloud-based data platforms
• Analyze source systems and business requirements to create efficient data mapping, transformation, and validation rules
• Optimize ETL performance, troubleshoot data processing issues, and implement tuning strategies to improve efficiency
• Collaborate with data architects, database administrators, business analysts, and application teams to deliver reliable data solutions
• Develop and maintain data warehouses, operational data stores, and reporting data marts
• Implement data quality checks, reconciliation processes, and exception handling frameworks
• Create and maintain technical documentation, design specifications, and operational runbooks
• Support production deployments, incident resolution, and continuous improvement initiatives
• Ensure compliance with data governance, security, privacy, and organizational standards

• U.S. Citizenship or Green Card required, with the ability to obtain a Public Trust clearance
• Bachelor’s degree in computer science, cybersecurity, engineering, or a related field; four additional years of relevant experience may be substituted in lieu of a degree
• Minimum 6 years of hands-on experience in ETL development, data integration, and data warehousing
• Strong experience with ETL tools such as Informatica, SSIS, Talend, DataStage, AWS Glue, or similar platforms
• Proficiency in SQL and database technologies including SQL Server, Oracle, PostgreSQL, or MySQL
• Experience designing complex data transformation, data migration, and integration solutions
• Strong understanding of data warehousing concepts, dimensional modeling, and star/snowflake schemas
• Experience working with cloud-based data services and modern data platforms
• Knowledge of data quality, data governance, and metadata management best practices
• Experience with performance tuning, error handling, and troubleshooting large-scale ETL processes
• Strong analytical, problem-solving, and communication skills
• Ability to work effectively in Agile development environments and collaborate across technical and business teams

System One, and its subsidiaries including Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. We help clients get work done more efficiently and economically, without compromising quality. System One not only serves as a valued partner for our clients, but we offer eligible employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan.

System One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law.

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Ref: #851-Rockville-S1