Backend Java Developer | Jersey City, US

JobCubby; Jersey City, Northern (NJ, KY); On-site; USD 44,000 - 154,000; Full time

Job summary

JobCubby in Jersey City, NJ is seeking an experienced Backend Developer with 5+ years of hands-on experience to design, develop, and maintain scalable backend applications and services.

You will build robust RESTful APIs and microservices, optimize databases, work with cloud platforms, and collaborate with cross-functional teams to deliver reliable, secure systems. Candidates should follow best practices, write tests, and participate in code reviews.

Qualifications

• 5+ years of hands-on backend development experience.
• Experience designing, developing, and maintaining scalable backend apps and services.
• Proficiency with REST APIs and microservices.
• Strong knowledge of databases, cloud technologies, and DevOps practices.
• Experience with CI/CD, testing, and code reviews.
• Excellent collaboration and communication skills.

Responsibilities

• Design, develop, and maintain scalable backend applications.
• Develop and integrate RESTful APIs and microservices.
• Participate in architecture and technical design discussions.
• Design and optimize database schemas, queries, indexes, and data models.
• Identify and resolve performance, scalability, and reliability issues.
• Implement secure authentication, authorization, and data protection mechanisms.
• Write clean, reusable, maintainable, and well-tested code.
• Develop unit, integration, and automated tests.
• Conduct code reviews and ensure adherence to coding standards and best practices.
• Troubleshoot production issues and perform root-cause analysis.
• Work with DevOps teams on CI/CD, deployment, monitoring, and release management.
• Collaborate with frontend developers, QA engineers, DevOps, product managers, and business teams.
• Contribute to technical documentation and knowledge-sharing initiatives.
• Mentor junior developers and provide technical guidance where required.

Skills

Java Spring

Python Django

Node Express

C# .NET

Go

REST APIs

Microservices

OAuth2 JWT

Cloud: AWS

CI/CD

Unit Tests

Git

Tools

Docker

Kubernetes

PostgreSQL

MySQL

MongoDB

Redis

Kafka

Job description

Job Summary

We are looking for an experienced Backend Developer with 5+ years of hands-on experience in designing, developing, and maintaining scalable backend applications and services. The candidate should have strong expertise in backend development, API design, databases, microservices, cloud technologies, and software engineering best practices.

The ideal candidate will be responsible for developing robust backend solutions, contributing to system architecture and design, optimizing application performance, and working closely with cross-functional teams.

Key Responsibilities

• Design, develop, and maintain scalable and high-performance backend applications.
• Develop and integrate RESTful APIs and microservices.
• Participate in architecture and technical design discussions.
• Design and optimize database schemas, queries, indexes, and data models.
• Identify and resolve performance, scalability, and reliability issues.
• Implement secure authentication, authorization, and data protection mechanisms.
• Write clean, reusable, maintainable, and well-tested code.
• Develop unit, integration, and automated tests.
• Conduct code reviews and ensure adherence to coding standards and best practices.
• Troubleshoot production issues and perform root-cause analysis.
• Work with DevOps teams on CI/CD, deployment, monitoring, and release management.
• Collaborate with frontend developers, QA engineers, DevOps, product managers, and business teams.
• Contribute to technical documentation and knowledge-sharing initiatives.
• Mentor junior developers and provide technical guidance where required.

Required Technical Skills Backend Development

• Strong hands-on experience with at least one backend technology:
• Java / Spring Boot
• Python / Django / FastAPI
• Node.js / Express
• C# / .NET
• Go
• Strong understanding of OOP, design patterns, data structures, and algorithms.
• Strong experience designing and developing REST APIs and microservices.
• Good understanding of API security, authentication, authorization, OAuth2, and JWT.

Database

• Strong experience with relational databases such as PostgreSQL, MySQL, or SQL Server.
• Experience with query optimization, indexing, transactions, and database design.
• Working knowledge of NoSQL databases such as MongoDB, DynamoDB, or Redis.

Cloud & DevOps

• Hands-on experience with at least one cloud platform:
• AWS
• Microsoft Azure
• Google Cloud Platform
• Experience with Docker and CI/CD pipelines.
• Knowledge of Kubernetes is preferred.
• Familiarity with logging, monitoring, and application performance management tools.

Messaging & Distributed Systems

• Experience with messaging/event-driven technologies such as Kafka, RabbitMQ, AWS SQS/SNS, or Azure Service Bus.
• Understanding of distributed systems, asynchronous processing, caching, scalability, and fault tolerance.

Development Practices

• Strong experience with Git and version control.
• Experience with Agile/Scrum development methodologies.
• Strong understanding of unit testing, integration testing, debugging, and code quality practices.

Preferred Qualifications

• Experience designing and implementing large-scale or high-volume applications.
• Experience with microservices architecture and distributed systems.
• Knowledge of system design and scalability principles.
• Experience with performance tuning and production optimization.
• Experience mentoring junior developers.
• Strong analytical, troubleshooting, and problem-solving skills.
• Excellent communication and collaboration skills.

Compensation, Benefits and Duration

• Minimum Compensation: USD 44,000
• Maximum Compensation: USD 154,000

Compensation is based on actual experience and qualifications of the candidate. The above is a reasonable and a good faith estimate for the role.

Medical, vision, and dental benefits, 401k retirement plan, variable pay/incentives, paid time off, and paid holidays are available for full-time employees.

This position is available for independent contractors

No applications will be considered if received more than 120 days after the date of this post.