Full Stack Developer

Full Stack / Backend Developer (Backend-Focused) Location: Newark, NJ area Employment Type: Contract-to-Hire (W2) Requirements: Experience with Python, Java, and JavaScript; working in distributed systems, object-oriented programming, design patterns, and design methodology Experience with Java services using Spring CLI, Maven, Microservices, multi-threading, concurrency, and parallel processing Frameworks: Spring Boot, Node.js (Full/MEAN/MERN stack) Data Store: Non-relational and relational data structures; MongoDB; BPM tools Data Streaming: SQS, Kinesis Ability to work effectively in cross-functional teams and with business partners to develop high-quality applications Hands-on experience with AWS cloud services and cloud-native application development Recent experience building enterprise GenAI solutions, including AI agents, chatbots, or RAG applications Experience with AWS Bedrock or other enterprise LLM platforms 5+ years of relevant experience with Java-related technologies on Unix or Linux 5+ years of relevant experience with backend technologies including JBoss, Spring Boot, REST 3+ years of relevant experience with client-side technologies including React, JavaScript, JSON, REST Knowledge/Understanding of: Application Programming Interfaces (APIs): consumption and development; implementing service-oriented architecture (SOA) patterns; web service technologies such as APIs, REST, JSON, JDBC Experience with AWS AgentCore Unit, interface, and end-user testing concepts and tooling (functional and non-functional) Automated testing, agile development methodologies, and Test-Driven Development (TDD) Accessibility awareness Software security skills including secure coding, web application security, and DevSecOps; solid grasp of security concepts (authentication, authorization, encryption, digital signature, JWT, SSL, web service proxies, firewall, SAML 2.0, OpenID Connect, OAuth 2.0) DevOps tools and practices: branching techniques and usage of GitHub, Bitbucket, or Subversion; DevOps, Jenkins Software Development Life Cycle (SDLC): monitoring and logging techniques AWS core services such as CloudWatch and CodeDeploy JSR Tech Consulting