Java Developer

CrackaJack Digital Solutions LLC.; New York (NY); On-site; USD 120,000 - 180,000; Part time

Job summary

CrackaJack Digital Solutions LLC. is seeking an experienced Java Backend Engineer to design, develop, and maintain scalable backend services and APIs using modern Java technologies in an enterprise setting.

You will build RESTful APIs, develop microservices, and write clean, well-tested code within an Agile/Scrum team. Ideal candidates have 8+ years in Java backend development, strong Spring Boot experience, and solid knowledge of SQL/NoSQL databases, ORM (Hibernate/JPA), and CI/CD pipelines.

Qualifications

• 8+ years of hands-on experience in Java backend development.
• Strong experience with Spring / Spring Boot.
• Experience with Microservices architecture.
• Strong knowledge of REST APIs and backend integration.
• Solid understanding of SQL / NoSQL databases.
• Experience with ORM frameworks (Hibernate/JPA).
• Knowledge of design patterns and backend best practices.
• Experience with Git and CI/CD pipelines.

Responsibilities

• Design, develop, and maintain backend services and APIs using Java.
• Build and maintain RESTful APIs and backend services.
• Develop microservices-based architectures.
• Write clean, efficient, reusable, and well-tested code.
• Optimize application performance, scalability, and reliability.
• Collaborate with architects, frontend developers, QA, and DevOps teams.
• Participate in code reviews and follow best coding practices.
• Troubleshoot production issues and provide root cause analysis.
• Work in Agile/Scrum development environment.

Skills

Java backend development

Spring / Spring Boot

Microservices architecture

REST APIs

SQL / NoSQL databases

ORM frameworks (Hibernate/JPA)

design patterns

Git

CI/CD pipelines

Agile/Scrum

Tools

Docker

Kubernetes

Job description

Experience: 8+ Years
Employment Type: Contract
Location:NY

Job Description

We are seeking an experienced Java Backend Engineer with strong expertise in building scalable, high-performance backend systems. The ideal candidate will work on designing, developing, and maintaining backend services and APIs using modern Java technologies in an enterprise environment.

Design, develop, and maintain backend applications using Java

Build and maintain RESTful APIs and backend services

Develop microservices-based architectures

Write clean, efficient, reusable, and well-tested code

Optimize application performance, scalability, and reliability

Collaborate with architects, frontend developers, QA, and DevOps teams

Participate in code reviews and follow best coding practices

Troubleshoot production issues and provide root cause analysis

Work in Agile/Scrum development environment

Required Skills

8+ years of hands‑on experience in Java backend development

Strong experience with Spring / Spring Boot

Experience with Microservices architecture

Strong knowledge of REST APIs and backend integration

Solid understanding of SQL / NoSQL databases

Experience with ORM frameworks (Hibernate/JPA)

Knowledge of design patterns and backend best practices

Experience with Git and CI/CD pipelines

Nice to Have

Experience with AWS / Azure / GCP

Knowledge of Docker & Kubernetes

Exposure to security concepts (OAuth, JWT)