Senior Backend java Developer- Only W2
Work Authorization: GC, GC EAD / H4 EAD / L2S / J2 EAD / TN / E3, USC (Any Visa Except H1B)Below is the Job SummaryJob Role/Title: - Senior Backend java Developer- Only W2Contract- Long Term ContractLocation: Atlanta GA- Onsite Seeking a Senior Backend Engineer with 10+ years of hands‑on expertise in Core Java, distributed microservices, and merchant payment technologies.In this role, you will lead backend software design and implementation of enterprise‑grade microservices powering millions of daily POS transactions across the global Clover merchant ecosystem.Key ResponsibilitiesBackend Strategy & JVM OptimizationArchitect and scale mission‑critical backend services using Core Java and JVM.Perform JVM performance tuning, memory sizing, and monitoring through load and performance testing.Microservices Design & ImplementationBuild distributed, fault‑tolerant architectures emphasizing scalability, fault isolation, and high availability.API Strategy & ScalingDrive RESTful API design, contract definition, and manage high‑throughput, low‑latency backend workflows.Team Leadership (Portal & Payments)Apply deep payment domain expertise across workflows, order management, merchant management, and payment processing for POS SaaS services.Technical Innovation & ExperimentationApply platform architectural decision frameworks to drive high ROI OSS standards and high‑performing Product, Security, and Compliance Engineering practices.Collaboration & Program ManagementLead senior engineering reviews, mentor junior engineers, and collaborate with cross‑functional technical and product teams.Technical Competencies & ProficienciesCore Java, JVM tuning, and performance optimization techniquesDistributed microservices using Spring Boot or similar frameworksRESTful APIs, asynchronous messaging, and data pipeline managementDeep understanding of Payment Processing Systems and Order Management Systems (OMS)Cloud Infrastructure Deployment: Advanced knowledge of Google Cloud Platform (GCP), Kubernetes, Docker, and CI/CD pipelinesDatabase Design & Optimization: Expertise in MySQL, PostgreSQL, Cassandra, and RedisMonitoring & Observability: Experience with Prometheus, Grafana, Splunk, and ELK stackSecurity & Compliance: Understanding of PCI‑DSS, authentication standards, and secure coding practices