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Java Backend Developer Jobs in O Fallon, MO (NOW HIRING)

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Java Backend Developer

O Fallon, MO · On-site

$47.25 - $61.25/hr

Design, develop, and maintain backend applications using Java 8 and the Spring Framework. * Build ... CI/CD and DevOps practices. * Unit testing (JUnit or Mockito). * Bachelor's degree in computer ...

Sigmaways Inc

Java Backend Developer

Saint Louis, MO · On-site

$49 - $63.75/hr

Excellent capabilities in Java applications and Object Oriented concepts * Deep functional ... Proficient oral and written communication skillsBS or MS in engineering, com * Hadoop - Nice to ...

Zentek Infosoft Inc.

Java Engineer

O Fallon, MO · On-site

$48.50 - $66.50/hr

... Java Backend Developer * Here is the JD: Java Engineer * An ideal candidate for this role would have extensive experience in Java development and be well-versed in cloud-native applications ...

Auritas

Java Lead Backend Developer

Saint Louis, MO

$120K/hr

* Strong Java developer with very good understanding of micro services * Develop and consume APIs using HTTP/Rest. * Skills on at least one major JS library /frame work. * Exposure to relational/non ...

Leidos

Mid-Level Backend Software Engineer

Bridgeton, MO · On-site

$87K - $157K/yr

Design, develop, test, and maintain backend application components using Java or Python * REST API ... Object-Oriented Programming: Apply object-oriented design principles to build scalable and ...

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How much do java backend developer jobs pay per hour?

As of Jul 8, 2026, the average hourly pay for java backend developer in O'Fallon, MO is $51.08, according to ZipRecruiter salary data. Most workers in this role earn between $45.38 and $58.89 per hour, depending on experience, location, and employer.

What are some common challenges Java Backend Developers face when working on large-scale enterprise applications?

Java Backend Developers working on large-scale enterprise applications often encounter challenges such as ensuring application scalability, managing complex codebases, and optimizing system performance under heavy loads. Collaborating across teams to integrate with front-end services and external APIs can require strong communication and problem-solving skills. Additionally, maintaining high code quality while delivering new features quickly often means balancing technical debt with innovation. Regular code reviews and adopting best practices in software architecture help address these challenges.

What are the key skills and qualifications needed to thrive as a Java Backend Developer, and why are they important?

To thrive as a Java Backend Developer, you need strong proficiency in Java programming, knowledge of data structures and algorithms, and experience with backend frameworks such as Spring or Hibernate, often supported by a degree in computer science or a related field. Familiarity with relational databases (like MySQL or PostgreSQL), RESTful API development, version control systems (such as Git), and build tools (like Maven or Gradle) is typically required, and certifications like Oracle Certified Professional Java Programmer can be advantageous. Excellent problem-solving skills, attention to detail, and effective communication are crucial soft skills for collaborating with teams and troubleshooting complex systems. These capabilities ensure robust, scalable, and maintainable backend solutions that meet business requirements and support seamless application performance.

What does a Java Backend Developer do?

A Java Backend Developer is responsible for building and maintaining the server-side logic, databases, and APIs of web applications using the Java programming language. They ensure that data is properly stored, retrieved, and processed while integrating with the frontend systems. Java Backend Developers also work on optimizing application performance, implementing security measures, and collaborating with other developers to deliver robust software solutions.
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What cities near O'Fallon, MO are hiring for Java Backend Developer jobs? Cities near O'Fallon, MO with the most Java Backend Developer job openings:
Java Backend Developer jobs near you
Infographic showing various Java Backend Developer job openings in O'Fallon, MO as of July 2026, with employment types broken down into 92% Full Time, 3% Part Time, and 5% Contract. Highlights an 78% Physical, 3% Hybrid, and 19% Remote job distribution, with an average salary of $106,253 per year, or $51.1 per hour.

Java Backend Developer

Rootshell Enterprise Technologies, Inc.

Maryland Heights, MO • On-site

$48.75 - $63.25/hr

Full-time

Re-posted 8 days ago

Job description

Key responsibilities:
• Design and develop the applications using Agile Methodology and followed TDD and Scrum.
• Java Programming, documents and maintains web service applications using different software development toolkits.
• Responsible for ensuring code functions and enhancements are successful and compatible with front-end code
• Provide technical advice and be able to identify technical implications regarding development and quality activities.
• Work closely with other developers, product managers, DevOps, and product support engineering teams to deliver development solutions.
• Document workflows and relevant processes to execute continuous improvement plans.
• Anticipate, identify, track and resolve technical issues and risks affecting delivery.
• Understand client business needs and product requirements and translate those needs into system-level architectural properties
Required Skills:
• Familiar with the technical implications of Back End Development Environments.
• Proven experience as a strong Java developer (Spring, Spring Boot, Maven)
• Microservices experience (Spring Boot)
• Secure Code Experience
• RESTful service
• Micro services (Spring Boot)
• Tomcat, Nginx web server
• Very good communication skills
• Needs to be up to date in required technologies
• Able to deliver tasks on time
• Proactive and Collaborative
Good to have skills:
• Telecommunications Industry experience would be a plus
• Understanding of Billing Systems technical implications
• Understanding the technical implications of Full Stack developed platforms
Thanks,
Satish
satish@rootshellinc.com
408 239 4600 Ext.: 5053

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