What are the responsibilities and job description for the Java Developer position at Axelon Services Corporation?
Global Financial Firm located in Jersey City, NJ has an immediate contract opportunity for an experienced Java Developer.
Pay Rate: $84.00 - $89.00 Negotiable based upon years of experience
Summary
- Work Mode: Hybrid
- Location: Jersey City, NJ
Requirements
- Minimum 10 years of experience in the design and development of enterprise-grade Java-based systems.
- Proficient in Java 17/21/25 LTS (Java 25 preferred), Core Java, Jakarta EE (J2EE), Spring Framework 7 / Spring Boot 4.x RESTful services.
- Working knowledge of modern Java language features and JVM internals — GC tuning and performance profiling.
- Expertise in databases such as Oracle or equivalent (PostgreSQL/MySQL) with strong SQL and PL/SQL programming skills; schema versioning via Flyway/Liquibase.
- Proficient in using AI-assisted development tools such as Claude, GitHub Copilot, Devin, Cursor for code generation, review, and productivity.
- Experience with multiple technologies and medium-to-complex distributed systems; well-versed with design standards, patterns, and enterprise frameworks.
- Fast learner of new tools, frameworks, and technologies; comfortable working with distributed/cross-timezone teams.
- Experience in event-driven architecture — Spring Boot components integrating with Apache Kafka and MQ (IBM MQ), including partitioning, consumer groups, idempotency, and transactional outbox patterns.
- Excellent knowledge of Relational Databases, SQL, and ORM technologies (JPA 2/3, Hibernate 6) and connection pooling (HikariCP).
- Strong understanding of Spring Security 6 — OAuth2.0/OIDC, JWT-based stateless auth, RBAC/ABAC.
- Familiarity with API design — REST with OpenAPI/Swagger, and exposure to high-performance service communication.
- Resilience patterns using Resilience4j — circuit breaking, rate limiting, retries.
- Caching and NoSQL exposure — Redis, MongoDB, Elasticsearch; awareness of vector databases (Pgvector) for AI/RAG-integrated services is a plus.
- Exposure to Spring AI and LLM integration patterns (RAG workflows) is an added advantage.
- Tools — Well versed with IntelliJ IDEA/Eclipse.
- Test-Driven Development and automated testing: JUnit 5, Mockito, AssertJ, Cucumber/Gherkin, Testcontainers for integration testing, contract testing (WireMock/Spring Cloud Contract); JIRA, Maven/Gradle, SonarQube.
- Experience with version control — GIT, Bitbucket, GitHub (including PR/branching workflows).
- Experience with Docker, multi-stage builds, Red Hat OpenShift, and Kubernetes (Deployments, ConfigMaps, Secrets, Ingress, HPA/KEDA autoscaling).
- Experience with CI/CD systems such as Jenkins, GitHub Actions, GitLab CI, or ArgoCD.
- Observability exposure — Micrometer, Prometheus, Grafana, distributed tracing via OpenTelemetry/Zipkin/Jaeger.
- Strong understanding of the full Software Development Life Cycle (SDLC).
- Experience in Agile methodologies — Scrum, sprint planning, and iterative delivery.
Salary : $84 - $89