Full Stack Java Developer– eCommerce / Order-to-Cash (OTC) platform is must

Contract: Long-Term | W2 or GC
Location: Seattle/Redmond, WA – 5 Days Onsite Required
We are hiring multiple Senior Software Development Engineers (SDEs) to support a large-scale eCommerce / Order-to-Cash (OTC) platform, working onsite with a high-performance engineering team. This role is ideal for backend engineers with strong Java, AWS, and microservices experience who enjoy solving complex distributed-system challenges.
Position Highlights
      •     Java / Spring Boot
      •     AWS (Lambda, API Gateway, DynamoDB, ECS/EKS, SQS/SNS)
      •     Microservices Architecture
      •     REST APIs
      •     Distributed Systems
      •     Order-to-Cash (OTC)
      •     High-Volume eCommerce
      •     Data Structures & Algorithms
      •     LeetCode-Style Interview
      •     Onsite – Seattle/Redmond
Responsibilities
      •     Develop and enhance scalable Java/Spring Boot microservices for eCommerce and OTC workflows
      •     Design and deploy REST APIs, AWS-native services, and event-driven components
      •     Improve system reliability, performance, monitoring, and fault tolerance
      •     Build automation, CI/CD pipelines, logging, and dashboards
      •     Support full lifecycle for complex features: order mgmt, billing, payments, reconciliation
      •     Collaborate with product, QA, PMs, and architects in a fast-moving onsite engineering environment
      •     Participate in code reviews, grooming, sprint planning, and design discussions
Required Qualifications
      •     5+ years backend development experience
      •     Strong hands-on experience with Java, Spring Boot, REST APIs
      •     Solid foundation in data structures, algorithms, system design
      •     AWS proficiency: Lambda, API Gateway, S3, DynamoDB, RDS, SQS/SNS
      •     Experience with microservices, distributed architectures, asynchronous messaging
      •     Strong debugging and performance-tuning skills
      •     Experience with Order-to-Cash (OTC), telecom, or large-scale eCommerce preferred
      •     CI/CD with GitHub, Jenkins, Docker, Kubernetes