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Senior Java Systems Engineer
Job in
Indiana Borough, Indiana County, Pennsylvania, 15705, USA
Listed on 2026-08-30
Listing for:
Excelon Solutions
Seasonal/Temporary
position Listed on 2026-08-30
Job specializations:
-
Software Development
Java Developer, Backend Developer
Job Description & How to Apply Below
Location:
Midwest, USA (Onsite presence required)
Duration:
Long term contract
Job Summary
We are looking for an experienced Senior Java Payment Systems Engineer to design, develop, and support high-volume, real-time payment processing applications. The ideal candidate will have strong hands-on experience with payment switching platforms
, transaction processing, and enterprise Java development.
This role involves building secure, scalable, and high-performance payment solutions while supporting mission-critical financial transaction systems.
Required Skills
- 8+ years of hands-on experience in Java application development.
- Strong experience working with payment transaction processing or payment switching systems
. - Expertise in Core Java, Java 8/11/17, Spring Boot, and Microservices.
- Experience developing RESTful APIs and enterprise integrations.
- Strong understanding of the payment transaction lifecycle.
- Knowledge of ISO 8583 messaging standards.
- Experience with card payments, EMV, ATM, and POS transaction flows.
Position Requirements
10+ Years
work experience
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