Back-End Engineer Jobs in New Jersey

Role: Java Backend Developer

Locations: Berkeley Heights, NJ (5 Days Onsite)

Duration: Long term

Employment Type: Contract W2

Skills: Java Backend, K8 Micro Services, Redis, Memcache (Payments & Merchant Platform)

Job Description:

We are seeking a Java Backend Resource having 8+ years of professional experience in backend application development, cloud engineering, and enterprise system integration with strong expertise in building, deploying, and supporting API driven applications. The candidate must have deep hands on experience with Java Backend, K8 Micro Services, Redis, Memcache, Cloud services, and CI/CD pipelines, along with the ability to design scalable, secure, and resilient cloud solutions.

This role requires close collaboration with cross functional teams, adherence to DevOps and Agile practices, and ownership of service quality and delivery.

Key Responsibilities

• Microservices Development: Design, develop, and maintain high-throughput backend services and RESTful / event-driven APIs (Kafka) using Java 17+ and Spring Boot.
• Cloud-Native Deployment: Deploy and manage applications in Kubernetes (K8s) environments, ensuring scalability and high availability.
• Caching & Optimization: Implement caching strategies using Redis or Memcached to minimize database load and optimize performance.
• Event-Driven Systems: Work with messaging systems (e.g., Kafka) to create asynchronous, event-driven architectures.
• Database Management: Maintain database schemas and write optimized queries for SQL (PostgreSQL, MySQL) and NoSQL (Cassandra, MongoDB) databases.
• CI/CD & DevOps: Collaborate on CI/CD pipelines (ArgoCD, Jenkins, Artifactory, DevSecOps) and monitor services using observability tools

Mandatory Technical Skills & Competencies

• Functional Domain: Good understanding of Payment and Merchant platform areas like Omnichannel Payment Acceptance, Security and Compliance, Financial Management (real time reporting, transaction tracking), Cloud-based Point-of-Sale (POS),
• Language: Expertise in Java and Spring Boot framework.
• Architecture: Strong experience building, testing, and troubleshooting Microservices.
• Infrastructure: Hands-on experience with Docker and Kubernetes (K8s), Containerized application deployment concepts, Configuration, scaling, and environment management awareness
• Caching Technologies: Experience managing data storage/caching with Redis or Memcached.
• Database: Proficient in SQL and NoSQL database design.
• Tooling: Familiarity with Git, Maven/Gradle, and CI/CD tools like (ArgoCD, Jenkins, Artifactory, DevSecOps), Source control, branching strategies, merge requests, CI/CD pipeline configuration and automated deployments, Environment-based deployments and rollback strategies
• Experience with AWS, Azure, or GCP services.
• Knowledge of monitoring tools such as Prometheus, Grafana, or ELK stack.
• Understanding of distributed tracing and logging.
• Cloud concepts like fundamentals, App Configuration / App Settings, Key Vault, Cache, Service Bus (queues/topics), Event driven architecture, Blob Storage, cloud security, scalability, and resiliency patterns
• Microservice Development
  • Microservice design and implementation
  • Middleware, filters, exception handling, and logging
  • Authentication and authorization (JWT/OAuth concepts)
  • Performance optimization and secure coding practices
• Agile and Collaboration Tools: Sprint planning, work item tracking, and agile delivery, Technical documentation and knowledge sharing

Soft Skills

• Strong problem-solving and analytical skills
• Clear communication with technical and non technical stakeholders
• Ownership mindset and production grade engineering discipline
• Ability to work independently and within cross functional teams

About Next Gen Software Solutions LLC:

Next Gen Software Solutions is a trusted provider of IT Staffing and consulting services dedicated to empowering businesses with cutting-edge technology solutions and exceptional talent. We specialize in delivering tailored IT consulting services, innovative software solutions, and connecting businesses with highly skilled IT professionals. Founded and led by a dedicated U.S. Army solider, Next Gen Software Solutions is deeply rooted in the core values of integrity, discipline, commitment, and experience-principles that guide every aspect of our operations.

Equal Employment Opportunity Statement:

Next Gen Software Solutions LLC is an Equal Opportunity Employer. We are committed to fostering an inclusive and diverse workplace where all employees and applicants are treated respect and dignity. We do not discriminate based on race, colour, religion, sex (including pregnancy, sexual orientation, or gender identity), national origin, age, genetic information, veteran status, or any other legally protected characteristic under applicable federal, state, or local laws.