Full Stack Java Developer

Job Title - Full Stack Java Developer Location - Piscataway, NJ (Hybrid) Duration - 12+ MonthsSummary: The role focuses on building and maintaining enterprise integrations across identity, API authorization, dynamic OAuth clients, dynamic scoping, microservices, and infrastructure-as-code within AWS and Boomi integration platforms.Scope of WorkThe engineer will contribute to enterprise integration projects spanning AWS serverless, API development, Ping-based authorization infrastructure, and IaC automation.Required Skills & ExperienceIdentity Provider (IDP) Integration — PingHands-on experience with Java 20+ (client uses Java 25)Hands-on experience integrating PingFederate / PingAccess for SAML 2.0 and OIDC flowsToken validation, scopes, claims mapping, and federated identity configuration.Custom Lambda AuthorizerDesign and implementation of AWS API Gateway custom Lambda authorizers (request and token-based)JWT/OIDC token validation against Ping, policy generation, and caching strategiesSpring BootProduction experience building Spring Boot microservices (REST APIs, service layers, externalized configuration)Familiarity with Spring, SpringBoot, and containerized deployments (Docker/ECS Fargate)AWS ExpertiseStrong working knowledge of core AWS services: Lambda, API Gateway, ECS/Fargate, DynamoDB, S3, CloudWatch, IAM, VPCServerless architecture patterns and event-driven designNetworking fundamentals (VPC endpoints, security groups, private subnets)Boomi Integration Platform knowledgeTerraformInfrastructure-as-Code using Terraform (modules, state management, workspaces)Provisioning and managing AWS resources in multi-environment pipelinesAgentic IDE & AI-Assisted DevelopmentComfort working with AI-powered development tools (Kiro, Claude Code, GitHub Copilot agentic coding assistants)Ability to leverage AI pair-programming for code generation, review, and iteration within Kiro or similar IDEsNice to HaveExperience with Deno / TypeScript Lambda functionsFamiliarity with OpenAPI specifications and contract-first API designCI/CD with AWS CodePipeline / CodeBuildDynamoDB data modeling and access patternsmicroservices migration experience