Senior Core Java Developer - Remote-Friendly & High-Impact

Centillion Infotech LLC; Sacramento (CA); Remote; USD 150,000 - 190,000; Full time

Job summary

Centillion Infotech LLC is seeking a skilled Core Java Developer to design, develop, test, and maintain high-performance Java applications. You will collaborate with cross-functional teams to deliver reliable software solutions and modernize core platforms.

The role requires extensive Java experience, strong OOP and design pattern knowledge, and hands-on API development with SQL/NoSQL databases. Expect a fast-paced Agile environment with emphasis on code quality.

Qualifications

• Bachelor's degree in CS, Eng, IT or related field.
• 10+ years of Java software development experience.
• Strong core Java, including: object-oriented programming, collections framework, exception handling, generics, multithreading and concurrency, I/O/NIO, streams and lambdas.
• Experience developing RESTful APIs and backend services.

Responsibilities

• Design, develop, and maintain Core Java applications.
• Write clean, efficient, reusable, and maintainable code.
• Build and consume RESTful web services and APIs.
• Develop multithreaded, high-performance applications.
• Collaborate with architects, QA, DevOps, product managers, and stakeholders.
• Participate in code reviews and CI/CD integration.

Skills

Core Java

Multithreading

Data structures

Design patterns

RESTful services

SQL / ORM

Unit testing

Agile/Scrum

Interpersonal skills

Education

Bachelor's degree in Computer Science or related field

Tools

Maven or Gradle

Git

JUnit / Mockito

Spring / Spring Boot

Docker

Kubernetes

Cloud platforms (AWS/Azure/GC)

JDBC / ORM

Job description

Centillion Infotech LLC is seeking a skilled Core Java Developer to design, develop, test, and maintain high-performance Java applications. You will collaborate with cross-functional teams to deliver reliable software solutions and modernize core platforms.

The role requires extensive Java experience, strong OOP and design pattern knowledge, and hands-on API development with SQL/NoSQL databases. Expect a fast-paced Agile environment with emphasis on code quality.