Hybrid Senior Java API Integration Engineer

Cognizant; Buffalo (NY); Hybrid; USD 81,000 - 136,000; Full time

Benefits offered by this job

Health benefits

Annual incentive program

401(k) contributions

Job summary

Cognizant is seeking a Java API Integration Engineer in Buffalo, NY to design, develop, and support secure integrations for customer onboarding, ACH origination, inquiries, and payment-status tracking.

You will work with REST and SOAP APIs, API gateways, and secure authentication, with a hybrid model: three days on site and two remote in Buffalo. Salary range $81,337 to $136,000, plus incentive program.

Qualifications

• Hands-on experience implementing banking or payment-service API integrations.
• Strong Java and Spring Boot development experience.
• Experience developing and integrating REST and SOAP APIs using JSON, WSDL, and OpenAPI/Swagger.
• Knowledge of API gateways, API publishing, subscriptions, and secure service-to-service communication.
• Experience with OAuth 2.0, TLS/mTLS, certificates, tokens, and secure authentication practices.
• Experience developing webhooks or event-driven integrations.
• Strong SQL skills and experience supporting financial-services applications.
• Professional experience working in banking or financial services.

Responsibilities

• Design, develop, and support secure integrations for onboarding, ACH origination, inquiries, and status tracking.
• Implement and integrate Fiserv PEP+ Direct APIs.
• Develop and maintain REST and SOAP API integrations.
• Participate in technical design, testing, implementations, deployments, and production support.
• Troubleshoot integration and operational issues, identify root causes, and coordinate timely resolution.
• Support API gateways, secure service-to-service communication, API publishing, subscriptions, token management, and webhooks.
• Collaborate with business and technology teams to deliver reliable payment solutions.

Skills

Java

Spring Boot

REST APIs

SOAP APIs

OAuth 2.0

TLS/mTLS

Webhooks

SQL

Banking experience

Tools

OpenAPI/Swagger

JSON

WSDL

Job description

Cognizant is seeking a Java API Integration Engineer in Buffalo, NY to design, develop, and support secure integrations for customer onboarding, ACH origination, inquiries, and payment-status tracking.

You will work with REST and SOAP APIs, API gateways, and secure authentication, with a hybrid model: three days on site and two remote in Buffalo. Salary range $81,337 to $136,000, plus incentive program.