Location : Tampa, FL (Local / Nearby Candidates Preferred)
Employment Type : W2 Contract
Project Overview :
Join a global team enhancing and modernizing the Graphite Payment Platform , a high-performance system processing up to 30 billion dollars and over 2–3 million transactions per day . This platform supports routing payments from upstream systems with strict latency constraints (≤30 milliseconds) .
Role Responsibilities :
Enhance and modernize an enterprise-scale payment routing platform.
Develop robust backend solutions using Java 11 / 17 (upgrading to 21).
Optimize and support transaction routing logic with ultra-low latency.
Implement and manage containerized services on Kubernetes .
Integrate and scale message-driven architectures using Kafka , MQ , etc.
Collaborate with a global team to onboard new clients and support increased traffic.
Maintain and improve database interactions (Oracle or CockroachDB).
Participate in planning for a future cloud migration to AWS .
Tackle complex technical problems with a strong focus on performance and reliability.
Must-Have Skills :
Java (11 / 17, moving toward 21)
Spring Framework
Kubernetes
Kafka or equivalent messaging systems
Oracle or CockroachDB
Nice-to-Have Skills :
NoSQL experience
Test automation with JUnit , Cucumber
Experience with cloud-native patterns or AWS
Tech Stack :
Java 11 (migrating to 17 / 21)
Spring Framework
Kafka, MQ
Oracle, CockroachDB
Kubernetes (Gaia platform)
Messaging & Routing systems
Future move to AWS
Third-party recruiters, please do not reach out for this role.
Stack Developer • Tampa, FL, US