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

Leidos

Mid-Level Backend Software Engineer

Ballwin, 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 ...

Leidos

Mid-Level Backend Software Engineer

Hazelwood, 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 ...

Leidos

Mid-Level Backend Software Engineer

Earth City, 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 ...

Leidos

Mid-Level Backend Software Engineer

Saint Ann, 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 ...

Leidos

Mid-Level Backend Software Engineer

Fenton, MO

$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 ...

Leidos

Mid-Level Backend Software Engineer

Florissant, 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 Jun 18, 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.

Is Java still in demand in 2026?

Java remains a highly in-demand skill for backend developers in 2026 due to its widespread use in enterprise applications, Android development, and cloud-based systems. Proficiency in Java, along with frameworks like Spring and knowledge of cloud platforms, continues to be valuable for job opportunities in software development.

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.

Will AI replace Java backend developers?

AI is unlikely to fully replace Java backend developers, as their role involves complex problem-solving, system design, and maintaining software infrastructure that requires human expertise. Instead, AI tools can assist developers by automating routine tasks and improving productivity, making their skills in Java, frameworks, and system architecture more valuable. Continuous learning and adapting to new technologies remain essential for Java backend developers to stay relevant in evolving environments.

Are Java backend developers in demand?

Java backend developers are in high demand due to the widespread use of Java in enterprise applications, web services, and cloud-based systems. Skills in frameworks like Spring and experience with cloud platforms increase employability, and the role often requires knowledge of databases and APIs. The demand is expected to remain strong as businesses continue to rely on Java for scalable backend solutions.

How much do Java back end developers make?

Java backend developers' salaries vary based on experience, location, and skill level, but they typically earn between $70,000 and $130,000 annually in many regions. Senior developers with expertise in frameworks like Spring and proficiency in cloud environments can earn higher salaries, especially with certifications and strong problem-solving skills.

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 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 June 2026, with employment types broken down into 53% Full Time, and 47% Contract. Highlights an 100% In-person job distribution, with an average salary of $106,253 per year, or $51.1 per hour.

Back End Software Engineer (Top Secret Cleared)

Latitude Inc

Saint Louis, MO • On-site

$140K - $200K/yr

Full-time

Posted 13 days ago

Job description

Position Overview:

We are seeking a talented Back End Software Engineer to design, develop, and maintain scalable, secure, and high-performance server-side applications. The ideal candidate will have strong proficiency in Python and experience working with C# or Java, enabling effective collaboration across diverse projects and technology stacks. This role involves working closely with front-end developers, DevOps engineers, and product teams to deliver efficient and reliable software solutions.

Active Top Secret clearance or higher is required
Responsibilities:
  • Design, build, and maintain robust, scalable, and efficient back-end systems and APIs.
  • Develop new features and enhance existing services using Python and C# or Java.
  • Collaborate with cross-functional teams to define, design, and ship new features.
  • Optimize applications for maximum performance, reliability, and scalability.
  • Implement and maintain database schemas, queries, and data models (SQL and NoSQL).
  • Ensure code quality through peer reviews, automated testing, and CI/CD practices.
  • Write clear, maintainable, and well-documented code.
  • Participate in architectural design discussions and technical decision-making.
  • Troubleshoot, debug, and resolve production issues in a timely manner.
$140,000 - $200,000 a year
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