QA Engineer – API, Database & Batch Testing

Cognizant; Tennessee; Hybrid; USD 110,000 - 150,000; Full time

Benefits offered by this job

Medical Insurance

Dental Insurance

Vision Insurance

Life Insurance

Paid Holidays

PTO | Paid Time Off

401(k) Plan

Disability Insurance

Parental Leave

Employee Stock Purchase Plan

Job summary

Cognizant is seeking a QA Engineer focused on API, database, and batch testing to validate backend applications and data flows across enterprise systems. You will design test cases, automate where possible, and collaborate with cross-functional teams throughout the SDLC.

Responsibilities include validating REST/SOAP APIs, performing advanced SQL checks, and ensuring data integrity across systems. The role emphasizes hybrid work with onsite collaboration when required.

Qualifications

• Strong hands-on experience testing REST and SOAP APIs, including validation of payloads, status codes and errors.
• Advanced SQL skills and experience in backend validation and data integrity checks.
• Experience with batch testing, ETL testing, and data reconciliation.

Responsibilities

• Design and execute functional, integration, regression, and end-to-end tests for REST and SOAP APIs.
• Validate backend data accuracy across databases and integrated systems.
• Test batch jobs, ETL processes, and data transformations for enterprise apps.
• Document defects and testing outcomes, supporting timely resolution with Agile teams.

Skills

API testing

SQL queries

ETL batch testing

Data reconciliation

Jira / Azure DevOps

Agile

Tools

Postman

Swagger

SoapUI

Rest Assured

Job description

About The Role

As a QA Engineer -- API, Database & Batch Testing, you will make an impact by validating backend applications, system integrations, data flows, and batch processes. You will help ensure application quality, data integrity, and reliable end-to-end business operations across enterprise applications. You will work collaboratively with developers, business analysts, product teams, and other quality engineering professionals throughout the software development lifecycle.

In This Role, You Will

• Design and execute functional, integration, regression, and end-to-end test cases for REST and SOAP APIs, including validation of request and response payloads, status codes, authentication, error handling, and business rules.
• Validate backend data accuracy, integrity, and consistency using advanced SQL queries across applications, databases, and integrated systems.
• Test stored procedures, functions, views, database validations, and source-to-target data transformations supporting enterprise applications.
• Perform batch and ETL testing to validate scheduled jobs, data processing, data reconciliation, dependencies, exception handling, and downstream results.
• Document defects, maintain test evidence, communicate testing outcomes, and collaborate with Agile delivery teams to support timely resolution of quality issues.

Work model

We believe hybrid work is the way forward as we strive to provide flexibility wherever possible. Based on this role's business requirements, this is a hybrid position requiring 3 days a week in a client or Cognizant office in Lauderdale, FL. Regardless of your working arrangement, we are here to support a healthy work-life balance through our various wellbeing programs.

The working arrangements for this role are accurate as of the date of posting. This may change based on the project you're engaged in, as well as business and client requirements. Rest assured, we will always be clear about role expectations.

What You Need To Have To Be Considered

• Strong hands-on experience testing REST and SOAP APIs, including the use of tools such as Postman, Swagger, SoapUI, or Rest Assured.
• Advanced SQL skills and experience performing database testing, backend validation, and data integrity verification using databases such as SQL Server or Oracle.
• Experience with batch testing, ETL testing, source-to-target validation, and data reconciliation.
• Experience testing chatbot functionality, integrations, conversational workflows, and backend responses.
• Understanding of Agile methodologies and experience using defect and work management tools such as Jira or Azure DevOps.

These will help you stand out

• Experience validating scheduled batch processes using Control-M, Airflow, or similar orchestration tools.
• Knowledge of API automation, database test automation, and reusable testing frameworks.
• Experience testing complex integrations and data flows across multiple enterprise applications.
• Ability to analyze logs, isolate backend issues, and collaborate with development teams on root-cause analysis.
• Strong communication, analytical, and problem-solving skills.

Benefits

Cognizant offers the following benefits for this position, subject to applicable eligibility requirements:

Medical/Dental/Vision/Life Insurance

Paid holidays plus Paid Time Off

401(k) plan and contributions

Long-term/Short-term Disability

Paid Parental Leave

Employee Stock Purchase Plan

Cognizant will only consider applicants for this position who are legally authorized to work in the United States without company sponsorship.

• Please note, this role is not able to offer visa transfer or sponsorship now or in the future*