Find Jobs

Find Jobs Near You – Available Work in Your Location

Skip to job details

Back to Results

Apply for this opportunity

To apply for this job, you'll continue to an external website or email application.

Apply Offsite

J2B Global LLC

Senior Java Backend Developer

Pay: Not specified

Posted: 2 weeks ago

Location: O'Fallon, MO (Onsite)

Last Updated: 2 weeks ago

Hours: Full-Time

Expires: 9/27/2026

Career Insights for Back End Developer / Engineer

See where this job fits in the broader career landscape. Knowing your career path helps you see what's possible from here.

Scorecard

Based on Missouri data

Review key factors to help you decide if this role fits your goals. How is this calculated?

Were these scores useful?

What they do

A Back End Developer or Engineer is responsible for server-side web application logic and integration of the work front-end web developers do. Usually writes web services and APIs used by front-end developers and mobile application developers.

$100,614 / year median in Missouri

+6% projected growth

Explore Career

Job Description

Senior Java Backend Developer J2B Global LLC O'Fallon, MO Job Details 8 hours ago Qualifications Performance tuning Software engineering Enterprise software Application Architecture Design (Architecture design skill) System performance optimization J2EE Scalable systems Enterprise software systems development Microservices SQL Cloud Native Design Scalability Agile software development Distributed computing Cross-functional collaboration Design (software development lifecycle) Cross-functional communication Test Planning (Quality assurance practices) Providing code feedback Web services design Full Job Description Senior Java Backend Developer ContractC2C O'Fallon, Missouri (5 days Onsite, Only Local Candidates)

Visa:

US CitizenGreen Card

GC-EADH1BH4-EADTNEAD

Job Summary:

We are seeking an experienced Senior Java Backend Developer with 8+ years of experience in enterprise Java development, microservices, cloud-native applications, and modern technology stacks. The ideal candidate will have extensive experience designing, developing, and optimizing scalable backend applications using Java/J2EE, REST APIs, distributed systems, and enterprise technologies. The candidate should have strong expertise in application design, performance optimization, code quality, and delivering scalable solutions while collaborating with cross-functional teams. Required Skills & Experience 8+ years of hands-on experience in Java/J2EE application development. Strong experience developing Microservices architectures and RESTful APIs. Experience building scalable backend applications and distributed systems. Proficiency in Oracle Database and writing complex SQL queries. Experience with cloud-native application development using AWS or Azure. Knowledge of cloud platforms such as PCF (Pivotal Cloud Foundry). Strong understanding of software design principles including SOLID, DRY, and Single Responsibility Principle. Experience working with modern technologies including NiFi, NATS, Kafka, Zookeeper, Splunk, Redis, Cassandra, and Oracle. Experience driving end-to-end development activities, conducting code reviews, developing test strategies, and resolving operational issues. Strong experience in performance optimization and implementing best practices for efficient, scalable code. Experience collaborating with cross-functional teams and contributing to enterprise application development. Strong understanding of SDLC and Agile methodologies. Excellent communication, analytical, and problem-solving skills. Refer