API Tester - Onsite - New Jersey

Arthur Grand Technologies is currently seeking a highly motivated and skilled API Test Engineer –Long Term Contract – Jersey City, NJ for one of our clients.

Position: API Test Engineer (Backend) - 9+ YearsLocation: Jersey City, NJ – OnsiteLong Term Contract Minimum 5+ years in backend testing with a strong focus on payments and banking systems. Expertise in mainframe and middleware technologies including MQ, and ESB. Proficient in validating JSON and XML data. Experience in financial services is highly preferred. Roles and Responsibilities: Conduct functional testing of backend systems involving mainframe and middleware components. Validate and compare JSON and XML data structures. Design and execute test cases for batch jobs and message queues. Work closely with development and business teams to ensure test completeness. Track and manage defects through resolution. Support integration testing and automation efforts.Tool knowledge sought: Strong experience in functional testing tools and methodologies. Familiarity with backend validation via custom scripts. Bruno knowledge is a plus. Exposure to scripting languages such as Python or Java and CI/CD pipelines. Understanding of Agile frameworks.                       Arthur Grand Technologies is an Equal Opportunity Employer (including disability/vets) About Arthur Grand Technologies:Arthur Grand Technologies is a leading provider of staffing and technology consulting services. Our company is managed by a team of professionals who have worked for big 5 consulting firms for 20+ years. We are a minority-owned staff augmentation and technology consulting company.At Arthur Grand Technologies, we value our employees & contractors and strive to provide them with challenging, interesting work, market-relevant benefits, and opportunities for professional growth. If you have the necessary qualifications, and are excited to join a dynamic team. Thank you for considering Arthur Grand Technologies. We look forward to hearing from you soon. Best regards,Richard TuckerArthur Grand Technologies Incwww.arthurgrand.comArthur Grand Technologies is an Equal Opportunity Employer (including disability/vets)