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

Jobs for Humanity

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 ...

ApplyMint

Back End Software Engineer

Berkeley, MO · On-site

$126.65 - $217.35/hr

In this backend developer position, you will develop prototypes and new capabilities for web ... Strong experience with Go or Java * Basic C++ or Python * Familiar with Kafka, NiFi, Redis, or ...

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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.

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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 Backend Developer

Jobs for Humanity

O Fallon, MO • On-site

$47.25 - $61.25/hr

Full-time

Re-posted 21 days ago

Job description

Job Description

Key Responsibilities:

  • Design, develop, and maintain backend applications using Java 8 and the Spring Framework.
  • Build real-time, event-driven systems using Kafka.
  • Collaborate with cross-functional teams to deliver scalable solutions.
  • Ensure code quality through reviews and best practices.
  • Troubleshoot issues across development, testing, and production environments.
  • Continuously improve development processes and systems.

Mandatory Skills:

  • Strong experience in Java 8 and OOP concepts.
  • Hands-on experience with Spring Boot and Spring MVC.
  • Expertise in Kafka (real-time streaming and pipelines).
  • Solid understanding of REST APIs and Microservices.
  • Experience with SQL and NoSQL databases.
  • Familiarity with Git.
Qualifications
  • Cloud platforms (AWS, Azure, or GCP).
  • Docker and Kubernetes.
  • Agile/Scrum experience.
  • CI/CD and DevOps practices.
  • Unit testing (JUnit or Mockito).
  • Bachelor's degree in computer science, IT, or a related field.
  • Experience: 7-10 Years
Additional Information

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

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