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

Tata Consultancy Service Limited

Java AI Engineer

O Fallon, MO · On-site

$90K - $110K/yr

  • Medical

  • Dental

  • Vision

  • Retirement

  • PTO

... skilled Java Developer with Agentic AI experience to design and develop next-generation Agentic AI applications. The ideal candidate will have strong expertise in Java, Spring Boot, backend ...

The Giant Bullseye

Senior Java Engineer

Saint Louis, MO

$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 ...

Esri

Software Development Engineer II- Back End

Saint Louis, MO · On-site

$97K - $162K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Collaborate with platform, DevOps, and GIS teams to translate requirements into production ... Professional experience developing backend services using Python, JavaScript/Node,js and Java

Esri

Software Development Engineer II- Back End

Saint Louis, MO · On-site

$97K - $162K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Collaborate with platform, DevOps, and GIS teams to translate requirements into production ... Professional experience developing backend services using Python, JavaScript/Node,js and 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 ...

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 ...

CYNET SYSTEMS

Senior Java Developer

Saint Louis, MO · On-site

$50 - $55/hr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

... Backend development technologies. Skills: * Java. * Microservices. * GCP. Benefits Our Benefits ... We deliver agile, scalable talent solutions across IT, engineering, life sciences, clinical, and ...

CYNET SYSTEMS

Senior Java Developer

Saint Louis, MO · On-site

$50 - $55/hr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

... Backend development technologies. Skills: * Java. * Microservices. * GCP. Benefits Our Benefits ... We deliver agile, scalable talent solutions across IT, engineering, life sciences, clinical, and ...

CYNET SYSTEMS

Senior Java Developer

Saint Louis, MO · On-site

$50 - $55/hr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

... and Backend development technologies. Skills: Java. Microservices. GCP. Benefits Our Benefits ... We deliver agile, scalable talent solutions across IT, engineering, life sciences, clinical, and ...

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Showing results 41-60

All JobsJava Backend Developer JobsJava Backend Developer Jobs in O'Fallon, MO

Java Backend Developer information

See O Fallon, MO salary details

$9

$51

$68

How much do java backend developer jobs pay per hour?

As of Aug 19, 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 job categories do people searching Java Backend Developer jobs in O'Fallon, MO look for?

The top searched job categories for Java Backend Developer jobs in O'Fallon, MO 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 AI Engineer

Tata Consultancy Service Limited

O Fallon, MO • On-site

$90K - $110K/yr

Full-time

Medical, Dental, Vision, Retirement, PTO

Posted 26 days ago

Job description

Role - Java AI Engineer
Experience Required - 5+ Years
We are seeking a highly skilled Java Developer with Agentic AI experience to design and develop next-generation Agentic AI applications. The ideal candidate will have strong expertise in Java, Spring Boot, backend development, and event-driven architectures, along with experience building AI-driven autonomous systems
Must Have Technical/Functional Skills
Java with Spring Boot (Mandatory)
Experience in developing Agentic AI applications (Mandatory)
Knowledge of SQL with Oracle and PostgreSQL (Mandatory)
Knowledge of REST API development and backend automation
Knowledge of Event-Driven Architecture
Knowledge of CI/CD concepts and Jenkins
Exposure to Kafka (Nice to Have)
Knowledge of Pivotal Cloud Foundry (Nice to Have)
Roles & Responsibilities
Design and develop Agentic AI applications using Java.
Develop scalable backend services using Java and Spring Boot.
Build and maintain REST APIs and backend automation solutions.
Work with Oracle and PostgreSQL databases for application development.
Implement event-driven architecture patterns in application design.
Participate in CI/CD processes using Jenkins.
Collaborate with cross-functional teams to deliver high-quality solutions.
Base Salary Range : $90,000 to $110,000 Per Annum
TCS Employee Benefits Summary:
Discretionary Annual Incentive.
Comprehensive Medical Coverage: Medical & Health, Dental & Vision, Disability Planning & Insurance, Pet Insurance Plans.
Family Support: Maternal & Parental Leaves.
Insurance Options: Auto & Home Insurance, Identity Theft Protection.
Convenience & Professional Growth: Commuter Benefits & Certification & Training Reimbursement.
Time Off: Vacation, Time Off, Sick Leave & Holidays.
Legal & Financial Assistance: Legal Assistance, 401K Plan, Performance Bonus, College Fund, Student Loan Refinancing.

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