Sr. Java Software Engineer

Role : Senior Java Software Engineer

Location: Amherst NY. (Onsite)

Industry Type : Retail

Work mode: Contact Opportunity (On going contract with Possibility of C2H)

About the Role

• We are looking for an experienced Java Developer to work on a high-performance retail platform involving POS systems, device integrations, and real-time transaction processing.
• You will play a key role in enhancing system performance, scalability, and user experience. Tackle Epic Challenges: Optimize performance, memory, and synchronization using powerhouse tools like JGroups, Rhino, and Lucene.
• Redefine User Experience: Supercharge UI rendering and responsiveness with NWJS and TIBCO for a seamless, jaw-dropping interface.
• Scale Like Never Before: Refactor data handling on H2 Database Engine to unlock next-level object storage capabilities.

Key Responsibilities

• Design, develop, and optimize Java-based applications and business logic
• Improve system performance, memory management, and concurrency handling
• Work on integrations with external systems (payment gateways, tax systems, email services, etc.)
• Enhance UI responsiveness using JavaScript, HTML/CSS, and NWJS
• Refactor and scale data handling using H2 Database
• Develop and maintain TCP/IP and REST-based APIs
• Debug and troubleshoot issues using browser tools and automation frameworks
• Collaborate with product and engineering teams for feature delivery

Required Skills

• 3+ years of Java and JavaScript hands-on coding expertise—you’re a pro at object-oriented and event-driven programming.
• TCP/IP and API integration expertise to make systems sing.
• Hands-on experience with H2 Database, Jetty, Rhino, Lucene, and JGroups.
• GUI game-changer with NWJS, HTML/CSS, and TIBCO.
• Debugging ninja with Selenium, browser tools (Chrome/Firefox), and integration frameworks.
• Git guru thriving in fast-paced, modern workflows.

Good To Have

• Experience with POS systems or retail applications or customer-focused systems
• Exposure to SMTP/email integrations, payment systems, or third-party services
• Familiarity with modular architecture and RESTful services
• Project management chops in high-energy environments

Interested Candidates Kindly share your resume at ***email_hidden***