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

The Giant Bullseye

Senior Java Engineer

Saint Louis, MO · On-site

$55.75 - $71/hr

Design, develop, and implement complex backend solutions using Java, Spring Boot, and related ... Collaborate with cross-functional teams including DevOps, QA, and product to deliver high-quality ...

Palnar

Backend Java Engineer W/IBM MQ Exp

O Fallon, MO · On-site

$47.25 - $61.25/hr

Senior Software Development Engineer (Specialty) - Level 7 Location: O'Fallon, MO/Hybrid Duration: 12 months * Java * Proficient in core java * Spring boot preferred. * Messaging services * MQ's or ...

ITTConnect

Senior AI Engineer (Java)

Saint Louis, MO · On-site

$117K - $154K/yr

Design and develop scalable backend applications and services using Java and Spring Boot. * Build ... Collaborate with AI/ML, product, platform, data, and DevOps teams. * Participate in architecture ...

ITTConnect

Senior AI Engineer (Java)

Saint Louis, MO · On-site

$121K - $159K/yr

Design and develop scalable backend applications and services using Java and Spring Boot. Build ... Collaborate with AI/ML, product, platform, data, and DevOps teams. Participate in architecture ...

RIT Solutions, Inc.

Mendix Developer

Chesterfield, MO · On-site

Job Summary : RIT Solutions, Inc. is seeking a Mendix Developer to join their team. The role ... and backend development using the Mendix low code platform, requiring skills in JavaScript, Java ...

Synthesis Systems

Full Stack Java Developer

Creve Coeur, MO · On-site

$49.25 - $63.50/hr

The Full Stack Developer provides frontend and backend development support. The successful ... JS, Java and Postgres SQL on AWS platform Overall 6+ years of Candidate experience needed Good ...

Synthesis Systems

Full Stack Java Developer

Creve Coeur, MO · On-site

$49.25 - $63.50/hr

The Full Stack Developer provides frontend and backend development support. The successful ... JS, Java and Postgres SQL on AWS platform Overall 6+ years of Candidate experience needed Good ...

Lorven Technologies

Java Engineer

O Fallon, MO · On-site

$48.50 - $66.50/hr

Job Title : Java Engineer Location : O'Fallon, Missouri Duration : Long term contract * Java ... This level of database knowledge is crucial for data-heavy applications and backend services.

Lorven technologies

Java Engineer

O Fallon, MO · On-site

$48.50 - $66.50/hr

Job Title : Java Engineer Location : O'Fallon, Missouri Duration : Long term contract * Java ... This level of database knowledge is crucial for data-heavy applications and backend services.

Palnar

Sr. Java Full Stack Developer

O Fallon, MO · On-site

$49 - $63.25/hr

What are your top 3 required technical skills We are looking for a developer who is strong in backend development and has basic skills to perform UI development Backend Skills Java 17 Spring Boot 3.x ...

ACI Infotech

Java Developer

Lake Saint Louis, MO · On-site

$48.25 - $62.50/hr

Onsite Sr. Java Developer Location: St. Louis, MO In short, I require ::-- Java , spring boot , microservices and AWS ( cloud is compulsory , if not AWS , any other cloud will work). Responsibilities ...

Apex Informatics

Java Developer

Saint Louis, MO · On-site

$49.50 - $64.25/hr

Java Developer Location: St Louis, MO * 10+ years of hands-on software engineering experience * Excellent hands-on experience in Java * Experience in developing REST services. * Experience in unit ...

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How much do java backend developer jobs pay per hour?

As of Sep 11, 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 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.

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 are popular job titles related to Java Backend Developer jobs in O'Fallon, MO?

For Java Backend Developer jobs in O'Fallon, MO, the most frequently searched job titles are:

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 August 2026, with employment types broken down into 100% Full Time. Highlights an 100% In-person job distribution, with an average salary of $106,253 per year, or $51.1 per hour.

Java Lead Developer (Back End) - Contract to Hire Only

Fenton, MO • On-site

Fabergent
Recruiting and Staffing Services • 51 - 200 employees
Learn more about Fabergentexternal

Full-time

Re-posted 18 days ago

Key responsibilities

  • Work closely with business stakeholders, Java architects, and other teams to develop and support software projects.

  • Utilize Java, Spring / Rest, and SQL Server to develop, maintain, and enhance applications.

  • Participate in agile development processes, including managing user stories and project scope using tools like Jira.

Job description

Job Description

Job Description

Client is experiencing significant growth in its Sales Effectiveness Programs. These programs are designed to incent and motivate both direct sales personnel and channel partners for Fortune 500 and other Global companies across a broad array of industries. The Channel/Sales Incentive Solutions team within client is looking for technology solution professionals to support this growth.

The programs are supported with a new, flexible technology foundation, using modern development tools and techniques. These techniques employ user-centered design; agile development methodologies; modern, mobile-responsive, front-end development tools, industry leading integration and rules engines, and re-usable API services, on an evolving uniform data model that supports the motivation business.

Currently, our constantly evolving development environment consists of the following:

Front-end: Polymer, HTML, CSS, Javascript, Node, Angular

Back-end: Java Linux/UNIX; Tomcat/Apache/JBoss; SOA and MVC architectures; JSON; J2EE technologies; Java frameworks: Spring, Struts, Hibernate, Apache (Axis, Xerces, etc.), or JDOM; Java application servers (e.g., JBoss, Apache, WebLogic, or WebSphere)

Lead Developer/Engineer

This position is part of a dynamic software development team working on very visible projects with a team of well-educated and extremely professional technologists. This person will work closely with business stakeholders, Java architects, and other teams across client.

MUST Have:

Strong experience with Java, Spring / Rest and SQL Server. *Note - our Lead Developers do much of the SQL work. We do have SQL Developers and DBAs but they are in a different group, so the App Dev leads need strong SQL Server knowledge and skills.

High Preferred to Have: Git, SVN, Maven and Jenkins or similar

Demonstrated ability with one (or more) major Javascript frameworks

Familiarity with web components and relevant design patterns

Familiarity with Google's Material Design

Familiarity with different application build and dependency management systems (Polymer CLI, Grunt/Gulp, Bower, Yarn, NPM)

Familiarity with different software testing practices (unit tests, functional tests, automated browser testing, regression testing)

Jira/Atlassian product family, or like products for managing user features and stories, scope management, project management

Experience using versioning software/repositories, preferably Git

Skill Set

This developer needs to have lead experience and be able to work with a full pod of resources including a Sr. IT Manager, developers, testers, etc.

Agile methodology is used in project implementation, this developer would need to have agile methodology knowledge.


Qualifications

7+ years of increasing responsibilities supporting technology related projects

BS degree in Computer Science, Business Administration, or related discipline with an information technology focus or equivalent experience

5+ years of demonstrable experience in participating on complex technology projects and teams

Additional Information

All your information will be kept confidential according to EEO guidelines.

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