Backend Engineer III

Backend Data Validation And Performance Test Engineer

eSimplicity is a modern digital services company that partners with government agencies to improve the lives and protect the well-being of all Americans, from veterans and service members to children, families, and seniors. Our engineers, designers, and strategists cut through complexity to create intuitive products and services that equip federal agencies with solutions to courageously transform today for a better tomorrow.

Purpose And Scope

The Backend Data Validation and Performance Test Engineer will be responsible for validating and assessing large-scale backend data systems to ensure accuracy, integrity, reliability, and high performance across CMS enterprise applications. This role requires strong expertise in backend database testing, ETL validation, big-data ecosystems, performance benchmarking, and cross-system data comparison between backend outputs and frontend/UI results. The engineer will closely partner with Data Coaches, Data Analysts, DBAs, and Agile delivery teams to ensure all backend data processes meet program, architectural, and CMS compliance standards.

Responsibilities

• Perform comprehensive backend data and ETL validation across big-data platforms such as Databricks, Snowflake, PostgreSQL, and similar technologies.
• Analyze, interpret, and validate complex CMS datasets, including Shared Systems Claims, Final Action Indicator logic, Provider data, Beneficiary data, and other data assets.
• Validate data sourced from CMS's Integrated Data Repository (IDR) and OnePI (Program Integrity) systems as they relate to Fraud Prevention System (FPS) downstream workflows.
• Perform detailed backend-to-frontend comparison testing to ensure accurate and consistent data presentation between backend databases (Snowflake/PostgreSQL) and UI applications or Databricks Unity Catalog outputs.
• Execute backend performance testing activities, including:
• Query performance analysis and optimization recommendations
• Benchmarking data processing times and throughput
• Load, stress, and volume testing of backend services and data pipelines
• Identifying and escalating performance bottlenecks in collaboration with platform and engineering teams
• Collaborate closely with Business Analysts, DBAs, Developers, DevOps engineers, and Scrum/Kanban teams to validate data integrity and ensure optimal backend performance.
• Ensure compliance with CMS Testing Frameworks, SDLC processes, quality standards, and federal regulatory requirements.
• Support functional UI validations when necessary to maintain end-to-end data alignment throughout the application ecosystem.
• Independently develop, execute, and maintain detailed backend test plans, performance testing strategies, and rigorous validation scenarios with minimal oversight.
• Create and execute API-based validation scenarios to test backend service operations and data exchanges.
• Actively participate in Agile ceremonies, including Daily Standups, Sprint Planning, Backlog Refinement, PI Planning, Sprint Reviews/Demos, and Retrospectives.
• Support, mentor, and share subject-matter expertise with backend and functional test teams to strengthen overall quality practices.

Requirements

• All candidates must pass public trust clearance through the U.S. Federal Government. This requires candidates to either be U.S. citizens or pass clearance through the Foreign National Government System which will require that candidates have lived within the United States for at least 3 out of the previous 5 years, have a valid and non-expired passport from their country of birth and appropriate VISA/work permit documentation.
• 4+ years of hands-on experience in backend data validation & performance testing within large-scale data environments, including platforms such as Databricks and Snowflake.
• Experience conducting workload analysis, query optimization, and data pipeline performance evaluation.
• Proficiency with collaboration & work management tools such as Jira, Confluence, and Slack.
• Experience working within Agile, SAFe, or similar software development methodologies.
• Ability to create clear user stories, defect reports, test documentation, and acceptance criteria.
• Experience translating business requirements, functional specifications, and user stories into comprehensive backend test cases.
• Strong verbal and written communication skills with the ability to collaborate effectively across cross-functional teams
• Ability to manage assigned work independently, prioritize tasks, and deliver quality results within established timelines.

Desired Qualifications

• Experience documenting test cases and results in TestRail.
• Prior experience supporting Centers for Medicare & Medicaid Services (CMS) programs.
• Experience with Tableau or Grafana for data visualization, dashboards, and system performance monitoring.
• Experience performing security or penetration testing using Burp Suite or similar tools like Postman for API testing.
• Section 508 accessibility testing using JAWS or similar tools.

Working Environment

eSimplicity supports a remote work environment operating within the Eastern time zone so we can work with and respond to our government clients. Expected hours are 9:00 AM to 5:00 PM Eastern unless otherwise directed by manager. Occasional travel for training and project meetings. It is estimated to be less than 5% per year.

Benefits

eSimplicity offers a comprehensive benefits package, including medical, dental, and vision coverage, 401(k) retirement benefits, paid time off, paid holidays, life and disability insurance, and additional wellness and employee support programs. Eligibility may vary based on employment status and applicable plan terms.

Reasonable Accommodation

eSimplicity is committed to providing reasonable accommodations to qualified individuals with disabilities during the application and hiring process. Applicants who need assistance or an accommodation should contact Human Resources.

Equal Employment Opportunity

eSimplicity is an Equal Opportunity Employer, including disability and protected veteran status. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, protected veteran status, disability, or any other legally protected status.