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

About the role

As a Java API Integration Engineer, you will make an impact by designing, developing, and supporting secure integrations that enable customer onboarding, ACH origination, transaction inquiries, and payment-status tracking. You will be a valued member of the technology team and collaborate with business, operations, risk, fraud, infrastructure, and vendor stakeholders.

In this role, you will:

• Implement and integrate Fiserv PEP+ Direct APIs for customer onboarding, ACH origination, inquiries, and status tracking.
• Develop and maintain REST and SOAP API integrations using JSON, WSDL, and OpenAPI/Swagger.
• Support ACH exception, return, investigation, and reconciliation processes.
• Participate in technical design, testing, implementation, 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.

Location: Buffalo, New York.

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 three days per week onsite and two days remote in Buffalo, New York.

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.

Visa sponsorship

This position is not eligible for visa transfer or sponsorship, now or in the future.

Compensation

The annual salary for this position is $81,337 to $136,000 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. The salary and other compensation information is accurate as of the date of this posting and may change subject to applicable law.

Cognizant offers benefits for eligible employees, including medical, dental, and vision coverage; paid time off and holidays; 401(k) contributions; disability coverage; parental leave; and an employee stock purchase plan.

What you need to have to be considered

• 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.

These will help you stand out

• Experience implementing or integrating Fiserv PEP+ or PEP+ Direct.
• Experience integrating with mainframe platforms, including z/OS and DB2 for z/OS.
• Knowledge of Treasury Management or embedded-banking solutions.
• Understanding of ACH processing, NACHA rules, credits, debits, returns, NOCs, and CCD and CTX transaction types.
• Experience supporting ACH onboarding, origination, warehouse inquiries, payment-status workflows, exceptions, reconciliation, and fraud controls.
• Experience providing production support in regulated or high-volume payment environments.

Compensation information is accurate as of the date of posting. Cognizant reserves the right to modify salary, other compensation, and benefits information at any time, subject to applicable law.