Senior Java Developer - Payments

Client - Lululemon Senior Java Developer - Payments Position Overview Loation - Seattle ,WA / Vancouver Rate - 85 C2C We are seeking a Senior Java Developer to build and operate backend services powering a payments platform. This includes microservices for transaction processing and AI/ML-powered capabilities such as LLM-backed APIs and automation workflows. Key Responsibilities Software Design & DevelopmentBuild scalable Java microservices for payment processingIntegrate with payment gateways (Stripe, Adyen, etc.)Develop REST APIs and event-driven systemsUse AI coding tools for development accelerationBuild AI-powered services (RAG pipelines, LLM APIs) Reliability & OperationsOwn production services (monitoring, on-call)Resolve latency and transaction issuesImplement resilience patterns (retry, circuit breakers)Maintain SLAs for performance and uptimeOperate AI systems with observability and fallback mechanisms Security & ComplianceImplement PCI-compliant data handlingApply encryption and tokenizationConduct threat modeling and vulnerability remediationImplement AI security practices (PII protection, guardrails) Collaboration & LeadershipWork with BSA, Product, QAMentor engineers and lead code reviewsContribute to architecture and roadmap decisions Required Qualifications Experience6-10 years Java development3+ years in payments or high-volume systemsMicroservices architecture experience Technical SkillsJava 11+, Spring Boot/Cloud/SecurityREST, Kafka/RabbitMQDatabases (PostgreSQL, MySQL), RedisCloud (AWS/GCP/Azure), Docker, KubernetesCI/CD (Jenkins, GitHub Actions)Testing (JUnit, Mockito)Observability tools (Datadog, Prometheus)Experience integrating LLMs and ML services Payments KnowledgeCard-present and card-not-present flowsPCI-DSS, EMV, 3DS, tokenizationProcessor APIs and webhooks Professional CompetenciesEngineering excellence and ownershipStrong communicationMentorship capabilities EducationBachelor's or Master's in Computer Science or related Preferred QualificationsRetail/e-commerce platform experienceERP and OMS integrationsFraud platforms experienceInternational paymentsMLOps / GenAI system experience