> Markdown version of [/jobs/ext/1990012-data-migration-etl-engineer-w-top-secret-clearance](https://www.wearedevelopers.com/jobs/ext/1990012-data-migration-etl-engineer-w-top-secret-clearance). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Data Migration & ETL Engineer w/Top Secret Clearance - **Company:** A3 Consulting Llc - **Location:** Silver Spring, MD, United States (Remote available) - **Experience:** Experienced - **Salary:** $120,000.0 - $132,000.0 - **Contract:** Permanent contract - **Skills:** JavaScript (Programming Language), Computer-Aided Design, Application Programming Interfaces (APIs), Data Analysis, Big Data, Information Systems, Custom Software, Data Validation, Information Engineering, Data Integration, Data Integrity, Extract Transform Load (ETL), Data Mapping, Data Transformation, Data Migration, Data Mining, Data Profiling, Data Structures, Relational Databases, Database Queries, Python (Programming Language), PostgreSQL, Simple Object Access Protocol (SOAP), SQL Databases, Information Technology, Servicenow, Web Api - **Published:** August 8, 2026 - **Apply:** https://www.jofdav.com/jobs/59148391-data-migration-etl-engineer-w-top-secret-clearance ## About the Role * Bachelor's degree in Computer Science, Information Systems, or a related field. * DoD 8570/8140 Certification Required. * 3+ years of experience in a data engineering, ETL, or data migration role. * Experience supporting data migration efforts within the ServiceNow platform, including Import Sets, Transform Maps, Data Sources, and the ServiceNow data model. * Strong proficiency in SQL, including writing complex queries for data extraction, transformation, and analysis. * Proven experience extracting data from relational databases (especially PostgreSQL). * Experience with Python or JavaScript for data transformation, automation, and validation. Desired Qualifications: * ServiceNow Certified Application Developer (CAD) or Certified System Administrator (CSA). * Understanding of DoD policies, directives, and initiatives as they relate to custom application development (i.e. DoD Risk Management Framework (DoDRMF), DISA Security Technical Implementation Guides (STIGs), Section 508 Compliance Security Clearance: * Active Top Secret Clearance Required. ## Description A3 Consulting is seeking a Data Migration & ETL Engineer to support a critical Department of Defense (DoD) Insider Threat modernization effort. If you'd enjoy playing a key role in ensuring the seamless and accurate migration of historical data and enabling the success of a next-generation national security system, this role is for you! In this job you will: * Support the design, development, and execution of ETL processes used to migrate large datasets from a PostgreSQL-based legacy system into the ServiceNow ITSM platform. * Create detailed source-to-target data mapping documents, defining the transformation logic required to align legacy data with the new ServiceNow application's data model. * Design, build, and maintain data loading solutions using ServiceNow Import Sets, Transform Maps, Data Sources, and scripting to support efficient and accurate data migration. * Optimize migration performance for large-volume data loads while maintaining data integrity and minimizing migration risk. * Perform in-depth analysis of the source data to identify potential quality issues, anomalies, and inconsistencies prior to migration. * Implement rigorous data validation and reconciliation procedures to ensure data integrity and completeness between the source and target systems. * Develop and execute scripts to cleanse and transform data, ensuring it conforms to the business rules and requirements of the new application. * Perform data profiling to identify duplicates, orphaned records, inconsistencies, and other data quality issues before migration. * Develop processes to extract data from various sources, including direct database queries and external system APIs (REST/SOAP) for ongoing data integration needs. * Develop Python or JavaScript scripts to automate data extraction, transformation, validation, and quality checks. * Collaborate with the Development Team to understand API endpoints and data structures for both legacy and future data integrations. * Develop reusable automation utilities to support repeatable migration and validation activities across multiple environments. ## Related Videos - [Applying Agile Principles to Incident Management ](https://www.wearedevelopers.com/videos/101-applying-agile-principles-to-incident-management) - [From Messy Queries to Scalable Systems - How Data Engineering actually works](https://www.wearedevelopers.com/videos/100203-from-messy-queries-to-scalable-systems-how-data-engineering-actually-works) - [Alibaba Big Data and Machine Learning Technology](https://www.wearedevelopers.com/videos/37-alibaba-big-data-and-machine-learning-technology) - [Web APIs you might not know about](https://www.wearedevelopers.com/videos/281-web-apis-you-might-not-know-about) - [AI in Production: applied AI & enterprise use cases](https://www.wearedevelopers.com/videos/100130-ai-in-production-applied-ai-enterprise-use-cases) - [PySpark - Combining Machine Learning & Big Data](https://www.wearedevelopers.com/videos/44-pyspark-combining-machine-learning-big-data) ## Related Articles - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers) - [Data Engineer Salary UK](https://www.wearedevelopers.com/magazine/253-data-engineer-salary-uk) - [Best Companies to work for in London: Top 25 Companies in 2023](https://www.wearedevelopers.com/magazine/187-best-companies-to-work-for-in-london-top-25-companies-in-2023) - [What Are The Top Skills Required For Azure Developers?](https://www.wearedevelopers.com/magazine/77-what-are-the-top-skills-required-for-azure-developers) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [The Most Popular IT Jobs on the Market](https://www.wearedevelopers.com/magazine/376-the-most-popular-it-jobs-on-the-market)