Senior Java Developer

Ztek Consulting INC; New Castle (DE); On-site; USD 120,000 - 170,000; Full time

Job summary

Ztek Consulting INC is seeking a Senior Java Developer for an onsite role in New Castle, DE. You will design, build, and maintain Java microservices, focusing on RESTful APIs, messaging with Kafka, and data modelling in MongoDB.

Ideal candidates have strong Java (8/11/17), Spring Boot, and microservices experience, with OpenShift/AWS cloud familiarity. You will collaborate with cross-functional teams and support CI/CD pipelines in production.

Qualifications

• Strong hands-on Java development experience.
• Proficient with Spring Boot, MVC and Data.
• Experience in microservices and API contracts.
• Familiarity with Kafka and MongoDB.
• Cloud and container platforms like OpenShift/AWS.

Responsibilities

• Design, develop, and maintain Java microservices.
• Implement RESTful APIs with enterprise standards.
• Develop and query MongoDB schemas and indexes.
• Optimize performance and ensure scalable deployments.
• Support CI/CD pipelines and production issue resolution.
• Collaborate with analysts, architects, QA, and DevOps.

Skills

Core Development

Java 8/11/17

Spring Boot

Spring MVC

Spring Data

Microservices

REST APIs

JSON

OpenAPI / Swagger

Kafka

MongoDB

OpenShift

AWS

Tools

OpenShift

AWS

Kafka

Job description

Tittle: Senior Java Developer

Location: New Castle, DE (Onsite)

Duration: Fulltime

Must Have Technical/Functional Skills

• Core Development
• Java (8/11/17) strong hands-on experience
• Spring Boot, Spring MVC, Spring Data
• Microservices architecture (service decomposition, API contracts)
• REST APIs, JSON, OpenAPI / Swagger
• Kafka producer, consumer, partitioning
• MongoDb
• Openshift / AWS

Database & Data Layer

• MongoDB
• Document modelling
• Indexing strategies
• Aggregation framework
• CRUD & performance tuning

Integration & Messaging

• Experience with Kafka (preferred)
• REST based integrations with upstream/downstream systems
• Design, develop, and maintain Java based microservices
• Implement RESTful APIs adhering to enterprise design standards
• Develop and optimize SQL queries (E2 level) for transactional and reporting use cases
• Design and manage MongoDB schemas, indexes, and queries
• Ensure high availability, scalability, and performance of microservices
• Apply exception handling, logging, monitoring, and resiliency patterns
• Collaborate with Business Analysts, Architects, QA, and DevOps teams
• Participate in code reviews, unit testing, and defect resolution
• Support CI/CD pipelines, deployments, and production issues
• Follow secure coding and compliance standards