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# Data Engineer III

- **Company:** Deloitte T.T.L.
- **Location:** United States
- **Salary:** $107,700.0 - $179,500.0
- **Contract:** Permanent contract
- **Skills:** Extract Transform Load (ETL), Data Profiling, Relational Databases, Global Positioning Systems (GPS), PostgreSQL, Microsoft SQL Server, User-Centered Design, Appian, Low-code
- **Published:** October 20, 2026
- **Apply:** https://apply.deloitte.com/en_US/careers/Login?jobId=372015

## About the Role

* Ability to work independently and collaborate as part of a team
 * Effective written and verbal communication skills
 * Meticulous attention to detail and quality of work product
 * Ability to build and sustain professional relationships
 * Ability to lead projects or workstreams
 * Ability to manage and prioritize multiple tasks in a fast-paced and dynamic environment
 * Strong interpersonal skills and professional demeanor
 * Ability to meet deadlines
 * Ability to provide clear guidance to others, Required:
 * Bachelor's degree
 * Active Public Trust security clearance
 * Must be MarkLogic Certified or able to obtain MarkLogic Certification.
 * 5+ years of experience data migration leadership
 * 3+ years of experience developing detailed source-to-target mappings for data integration and migration initiatives.
 * 3+ years of experience with strong hands-on experience with PL/SQL development, including complex queries, stored procedures, functions, and packages.
 * 3+ years of experience performing data validation, reconciliation, and defect resolution to ensure data accuracy and completeness.
 * 1+ years of experience delivering solutions in Agile/Scrum environments, including sprint planning, stand-ups, reviews, and retrospectives.
 * Ability to travel 0-25%, on average, based on the work you do and the clients and industries/sectors you serve
 * Must be legally authorized to work in the United States without the need for employer sponsorship, now or at any time in the future

Preferred:

 * Proficiency designing, developing, testing, and executing ETL processes.
 * Experience with Appian or low-code platform migrations
 * Experience with SQL Server, PostgreSQL, or similar relational databases
 * Familiarity with data profiling, cleansing, and cutover planning
 * Strong documentation and stakeholder communication skills
 * Familiarity with Product Lifecycle Management software

## Description

As a Data Engineer III on the GPS Engineering as a Service team, you will be responsible for delivering Appian-based business process solutions that support mission objectives.

 * Lead migration of data from legacy system into the relational database supporting a new Appian application.
 * Own source-to-target mapping, migration strategy, ETL coordination, reconciliation, validation, and cutover support across the full migration lifecycle.
 * Partner with architects, Appian developers, analysts, and business SMEs to ensure data quality, completeness, and alignment to the evolving target-state data model.
 * Participate in Agile delivery activities, including sprint planning, daily stand-ups, backlog refinement, and release support.
 * Apply Appian development standards, reusable components, and performance practices to support maintainability and technical quality.