ETL Data Migration Validation Engineer (IV&V)
Location: McLean, VA
Company: Harmonia Holdings Group, LLC
Job Description Apply Now
Harmonia Holdings Group, LLC is an award-winning, rapidly growing federal government contractor committed to providing innovative, high-performing solutions to our government clients and focused on fostering a workplace that encourages growth, initiative, creativity, and employee satisfaction.
Description
Title: ETL Data Migration Validation Engineer (IV&V)
Location: Remote
Terms: Full-time
Clearance: Ability to obtain a Public Trust
Travel: 0%
Project Description
FEMA’s Grants Management Modernization (GMM) initiative is a large-scale effort to consolidate and modernize multiple legacy grant systems into a unified enterprise platform. This includes the migration of active financial and grant transaction systems with high data volumes and complex business rules.
The IV&V team operates independently from development teams and is responsible for validating the accuracy, completeness, and integrity of data migrated from legacy environments into the modernized platform.
This role is primarily focused on data migration validation and reconciliation. It is not a UI-focused or manual regression testing position.
Position Description
The ETL Data Migration Validation Engineer will be responsible for independently validating large-scale data migrations across platforms (e.g., Oracle, PostgreSQL, CSV-based sources) involving high-volume datasets (100K–250K+ records).
This role requires strong, hands-on SQL expertise and the ability to work directly from mapping documentation—often without direct access to the source database. The ideal candidate must be comfortable designing reconciliation strategies, performing set-based comparisons, validating composite keys, and identifying discrepancies across systems.
Approximately 70–80% of this role is dedicated to data migration validation and reconciliation.
Responsibilities:
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Data Migration Validation & Reconciliation
- Independently validate data migrated from legacy systems to the GMM platform using complex SQL queries.
- Perform set-based comparisons (e.g., EXCEPT/MINUS logic, full outer joins) to identify missing, extra, or mismatched records.
- Reconcile high-volume datasets (100K+ records) across source and target environments.
- Validate composite key integrity and multi-table joins based on mapping documentation.
- Detect and resolve data multiplication caused by improper join logic.
- Validate incremental loads versus full data loads.
- Identify and analyze discrepancies related to null handling, outer joins, and transformation logic.
- Validate cross-platform migrations (e.g., Oracle to PostgreSQL, CSV to database).
- Perform validation when direct source database access is unavailable, leveraging staged data, flat files, and documentation.
Schema & Data Integrity Validation
- Validate schema alignment, data types, constraints, and field-level transformations.
- Identify truncated values, formatting discrepancies, whitespace anomalies, and encoding issues.
- Support checksum/hash total validation techniques where applicable.
- Reverse engineer transformation logic when documentation is incomplete.
Independent IV&V Execution
- Operate independently from development teams to provide objective validation findings.
- Document defects and reconciliation findings clearly and concisely.
- Participate in Agile ceremonies to align validation efforts with migration releases.
- Provide risk-based recommendations to federal stakeholders regarding data accuracy and integrity.
Requirements
- U.S. Citizen eligible to obtain and maintain a Public Trust clearance.
- 5+ years of hands-on SQL experience, including complex joins, subqueries, aggregates, and set-based comparisons.
- Demonstrated experience validating large-scale data migrations (100K+ records).
- Direct experience performing source-to-target data reconciliation.
- Experience working from mapping documents to validate field-level transformations.
- Experience validating composite keys and multi-table relationships.
- Experience identifying null-related discrepancies in outer joins.
- Experience validating cross-platform migrations (e.g., Oracle, PostgreSQL, SQL Server, CSV).
Desired
- Experience supporting federal modernization programs.
- Experience validating financial or grant-based transactional systems.
- Familiarity with ETL processes and data staging environments.
- Experience working in an Independent Verification & Validation (IV&V) capacity.
- Exposure to hash/checksum validation techniques.
- Familiarity with Agile methodologies.
#DICE #LI
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Here at Harmonia we are pleased to have been repeatedly recognized for our outstanding work culture, the innovative work we do, and the employees on our team who make a difference each day. Some of these recognitions include:
- Recognized as a Top 20 "Best Place to Work in Virginia"
- Recipient of Department of Labor's HireVets Gold Medallion
- Great Place to Work Certification for five years running
- A Virginia Chamber of Commerce Fantastic 50 company
- A Northern Virginia Technology Council Tech 100 company
- Inc. 5000 list of fastest growing companies for eleven years
- Two-time SBA SBIR Tibbett's Award winner
- Virginia Values Veterans (V3) Certification
We recognize that every bit of our success is the result of our teams of hard-working, motivated, and innovative professionals who are proud to call themselves part of the Harmonia family! In addition to competitive compensation, a family-focused culture, and a dynamic, productive work environment, we offer all full-time employees a variety of benefits including, but not limited to
- Traditional and HSA- eligible medical insurance plans
- 100% employer-paid dental and vision insurance options
- 100% employer-sponsored STD, LTD, and life insurance
- 5% 401(k) company matching
- Flexible-schedules and teleworking options
- Paid holidays and PTO Accrual Plans
- Paid Parental Leave
- Professional development and career growth opportunities
- Team and company-wide events, recognition, and appreciation-- and so much more!
Check out our , , and to find out a little more about who we are and if we are the right next step for your career!
Harmonia is an Equal Opportunity Employer providing equal employment opportunity to all employees and applicants for employment without regard to race, color, religion, national origin, age, gender, gender identity, sexual orientation, disability, or genetics. Harmonia does and will take affirmative action to employ and advance in employment individuals with disabilities and protected veterans. To perform the above job successfully, an individual must possess the knowledge, skills, and abilities listed; meet the education and work experience required; and must be able to perform each essential duty and responsibility satisfactorily. Other duties in addition to those listed may be assigned as necessary to meet business needs. Reasonable accommodation will be made to enable an applicant with a disability to successfully apply for and/or perform the essential duties of the job. If you are in need of an accommodation, please contact .