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Senior Java Developer expertise in Connex Switch
Job in
Elgin, Kane County, Illinois, 60122, USA
Listed on 2026-10-01
Listing for:
Greymatter Innovationz
Full Time
position Listed on 2026-10-01
Job specializations:
-
Software Development
Java Developer, Backend Developer, Software Engineer
Job Description & How to Apply Below
Grey matter Innovationz helps you stay digitally relevant across domains, technologies, and skillsets, every day.
We are looking for:Senior Java Developer with expertise in Connex Payment Switch
Location:
Riverwoods, IL/ Remote or Hybrid Experience
Required:
8+ years in Java Development
Key Responsibilities
- Design, develop, and maintain high-volume applications on the Connex Payment Switch platform.
- Support transaction processing for credit, debit, ATM, POS, and digital payment channels.
- Build scalable Java/Spring Boot microservices and integrate switch applications with external banking networks.
- Handle production support, root cause analysis, and performance optimization for mission-critical systems.
- In Connex – we need - In enterprise computing and hardware engineering, this refers to Mellanox/NVIDIA ConnectX network cards used in Open Compute Project (OCP) server architectures
- Core Tech Stack: Core Java (8/11/17), Spring Boot, Microservices, REST APIs, CI/CD, Git, Linux/Unix.
- Domain Expertise: Connex Payment Switch, ISO 8583 messaging standards, EMV, card payments, ATM/POS transaction flows.
- Databases: Oracle, SQL Server, or PostgreSQL.
- PCI DSS compliance knowledge and FIS payment products experience.
- Background in payment switch migration or modernization projects.
#Java Developer #Connex Switch #Payment Systems #Hiring #Tech Jobs #Chicago Jobs #Software Engineering #Fintech Jobs
We offer:Help you to upgrade yourself to the next level.
Position Requirements
10+ Years
work experience
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