Summary
✨ AI‑Generated
A senior Java engineering position focused on building reliable payment-related applications, scalable services, and integrations with external financial systems.
Highlights
Senior role working on high-volume transaction systems with opportunities in architecture, optimization, and critical application development.
Description
Greymatter 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
Required Experience & Technical Skills
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.
Nice to Have / Preferred
AWS, Docker, Kubernetes, or Kafka experience.PCI DSS compliance knowledge and FIS payment products experience.Background in payment switch migration or modernization projects.
Interested candidates can apply directly or send their updated resume to vik@greymatterinnovationz.com
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At Greymatter Innovationz,
We offer:
Motivating Work Environment.
Excellent Work Culture.
Help you to upgrade yourself to the next level.
And More!!!
