Freelance Full Stack Developer Jobs in Columbus, GA

About the role
As a Senior QA Analyst with Mainframe and TSYS experience, you will make an impact by ensuring the quality, stability, and reliability of critical payment processing and banking applications. You will be a valued member of the Quality Engineering team and work collaboratively with business analysts, developers, product owners, and cross-functional stakeholders to deliver high-quality solutions supporting TSYS and related banking platforms.
In this role, you will:

• Perform functional, regression, smoke, integration, and performance testing for Mainframe and distributed applications.
• Analyze business requirements and technical specifications to create comprehensive test scenarios, test cases, and validation strategies.
• Execute end-to-end testing for banking and payment processing workflows, ensuring accurate data processing and system integration.
• Investigate defects, perform root cause analysis, and collaborate with development teams to drive timely resolution.
• Support Agile delivery by participating in sprint planning, daily stand-ups, reviews, retrospectives, UAT activities, and production validation efforts.

Work model
At Cognizant, we strive to provide flexibility wherever possible, and we are here to support a healthy work-life balance through our various wellbeing programs. Based on this role's business requirements, this is an onsite position requiring 5 days per week in a client or Cognizant office in Columbus, Georgia.
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 experience testing Mainframe applications with hands-on knowledge of COBOL-based systems.
• Proven experience in functional, regression, integration, and end-to-end testing within enterprise environments.
• Experience analyzing business requirements, creating test cases, executing test plans, and managing defects throughout the testing lifecycle.
• Knowledge of batch processing, file-based testing, data validation, reconciliation, and Mainframe testing methodologies.
• Strong SQL skills with experience performing backend testing and database validation.
• Experience using API testing tools such as Postman.
• Understanding of Software Testing Life Cycle (STLC) and Agile/Scrum delivery methodologies.
• Experience supporting banking, financial services, payments, or card processing applications.
• Strong analytical, troubleshooting, and communication skills with the ability to collaborate across technical and business teams.

These will help you stand out

• Experience working with TSYS payment processing platforms.
• Hands-on experience with automation testing tools such as Playwright or Selenium.
• Working knowledge of Java or JavaScript for test automation development.
• Experience with CI/CD tools and practices, including Jenkins, GitHub Actions, and pipeline validation.
• Familiarity with SQLite and other relational database technologies.
• Experience reviewing application logs, batch jobs, interfaces, and production support activities.
• Advanced reporting and test metrics preparation using Microsoft Office tools and collaboration platforms.

We're excited to meet people who share our mission and can make an impact in a variety of ways. Don't hesitate to apply, even if you only meet the minimum requirements listed. Think about your transferable experiences and unique skills that make you stand out as someone who can bring new and exciting things to this role.
Salary and Other Compensation:
The annual salary for this position is between $53,477 to 92,500 depending on experience and other qualifications of the successful candidate.
This position is also eligible for Cognizant's discretionary annual incentive program, based on performance and subject to the terms of Cognizant's applicable plans.
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
Disclaimer: The salary, other compensation, and benefits information is accurate as of the date of this posting. Cognizant reserves the right to modify this information at any time, subject to applicable law.
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*
About Cognizant:
Cognizant (Nasdaq: CTSH) is an AI Builder and technology services provider, bridging the gap between AI investment and enterprise value by building full-stack AI solutions for our clients. Our deep industry, process and engineering expertise enables us to build an organization's unique context into technology systems that amplify human potential, drive tangible outcomes and keep global enterprises ahead in a fast-changing world. See how at cognizant.ai or @cognizant.
Additional employment information
Compensation information is accurate as of the date of this posting. Cognizant reserves the right to modify this information at any time, subject to applicable law.
Applicants may be required to attend interviews in person or by video conference. In addition, candidates may be required to present their current state or government issued ID during each interview.
Cognizant is an equal opportunity employer. Your application and candidacy will not be considered based on race, color, sex, religion, creed, sexual orientation, gender identity, national origin, disability, genetic information, pregnancy, veteran status or any other characteristic protected by federal, state or local laws.
If you have a disability that requires reasonable accommodation to search for a job opening or submit an application, please email [email protected] for roles based in the Americas or [email protected] for roles based in India.