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Java Software Engineer Jobs in O Fallon, MO (NOW HIRING)

Software Technology Inc

Software Engineer

Wildwood, MO

With knowledge of general programming languages, frameworks and deployment methodologies, creates ... Java/Groovy/Go/C#/.Net/Python • Docker/Kubernetes • NodeJS • relational/NoSQL database • ...

ACI Infotech

Java Developer

Lake Saint Louis, MO · On-site

$48.25 - $62.50/hr

... software engineer will have: Bachelors or Masters degree, preferably in Computer Science, Computer Engineering or other technical (STEM) field or an equivalent combination of education and experience ...

Ask IT consulting

JAVA Engineer

Saint Louis, MO

$50.25 - $69/hr

... software design and development and should be comfortable in a Linux shell Experience with build systems such as: Ant or Maven PREFERRED EXPERIENCE Project experience with JPA Project experience with ...

The Giant Bullseye

Senior Java Engineer

Saint Louis, MO

$55.75 - $71/hr

Overview We are looking for a highly skilled Senior Java Engineer to design, develop, and maintain ... quality software solutions * Participate in code reviews, performance optimization, and ...

Equifax, Inc.

Senior Software Engineer

Saint Louis, MO · On-site

$119K - $157K/yr

Bachelor's degree or equivalent experience * 5+ years of software engineering experience * 5+ years experience writing, debugging, and troubleshooting code in mainstream Java, SpringBoot, TypeScript ...

Samprasoft

Software Engineer II

O Fallon, MO

Software Engineer II Location: OFallon, MO Program Overview: Sustainability and Innovations Program ... Java, REST API, Pivotal Cloud Foundry, Jenkins, Spring, Oracle (or any other database), GIT ...

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How much do java software engineer jobs pay per hour?

As of Jun 18, 2026, the average hourly pay for java software engineer in O'Fallon, MO is $56.52, according to ZipRecruiter salary data. Most workers in this role earn between $46.54 and $63.85 per hour, depending on experience, location, and employer.

Are Java programmers still in demand?

Java programmers remain in demand due to the language's widespread use in enterprise applications, Android development, and backend systems. Skills in Java, along with knowledge of frameworks like Spring and tools such as Maven, enhance job prospects in this field.

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

To thrive as a Java Software Engineer, you need strong programming skills in Java, a solid understanding of object-oriented design, and typically a degree in computer science or a related field. Familiarity with development tools such as Eclipse or IntelliJ IDEA, version control systems like Git, and frameworks such as Spring or Hibernate is often required. Analytical thinking, problem-solving abilities, and effective teamwork distinguish high-performing individuals in this role. These skills ensure the efficient design, development, and maintenance of robust software applications in collaborative and dynamic technical environments.

What Does a Java Software Engineer Do?

A Java software engineer designs and develops computer applications using the Java programming language. In this job, you work with web developers and other software engineers to integrate java software into online platforms or other types of computer software. You are present for the entire development lifecycle, from design through quality testing. Your other duties may include documenting the programming code for other users or developers and writing reports to management or department heads. Java engineers work in large teams, so you must be able to collaborate with many people to complete a project.

Which pays more, C++ or Java?

For a Java Software Engineer, salary differences between C++ and Java roles depend on experience, location, and industry. Generally, C++ positions may offer higher salaries due to its use in performance-critical systems, but Java roles are also well-compensated, especially in enterprise environments. Both skills are valuable, and salary can vary based on specific job requirements and certifications.

What are some typical challenges Java Software Engineers face when working on large-scale enterprise applications?

Java Software Engineers working on large-scale enterprise applications often encounter challenges such as managing complex codebases, ensuring high performance under heavy loads, and maintaining backward compatibility during system upgrades. Collaborating with cross-functional teams, like QA and DevOps, to streamline deployments and resolve integration issues is common. Additionally, keeping up with evolving frameworks and best practices is important for maintaining code quality and system reliability.

What is the difference between Java Software Engineer vs Java Developer?

AspectJava Software EngineerJava Developer
Required CredentialsBachelor's in Computer Science, Java certificationsBachelor's in Computer Science, Java certifications
Work EnvironmentDesigning, developing, and testing Java applicationsWriting, debugging, and maintaining Java code
Employer & Industry UsageTech companies, software firms, enterprise solutionsStartups, software companies, freelance projects
Common Search & ComparisonOften compared for roles involving system design and architectureFocused on coding and implementation tasks

While both roles require similar skills and certifications, Java Software Engineers typically focus on designing and architecting Java applications, whereas Java Developers primarily concentrate on coding and maintaining Java programs. The choice depends on the project scope and career focus.

Is Java outdated in 2026?

Java remains a widely used programming language for software engineering in 2026, especially in enterprise applications, Android development, and backend systems. Its ongoing updates, large ecosystem, and strong community support ensure its relevance for Java software engineers. Staying current with new features and frameworks is important for maintaining competitiveness in the field.

What engineers make $500,000?

Senior software engineers, including experienced Java Software Engineers working in high-demand industries or at large tech companies, can earn $500,000 or more annually through base salary, bonuses, and stock options. Achieving this level typically requires extensive experience, specialized skills, and often leadership responsibilities or executive-level roles.

What does a Java Software Engineer do?

A Java Software Engineer is responsible for designing, developing, and maintaining software applications using the Java programming language. They work on building efficient, scalable, and robust systems, often collaborating with other developers, testers, and stakeholders. Their tasks can include writing code, debugging, testing, and optimizing Java applications for various platforms, such as web, mobile, or enterprise environments. Java Software Engineers also help ensure that software solutions meet client or business requirements and adhere to industry best practices.
More about Java Software Engineer jobs
What are popular job titles related to Java Software Engineer jobs in O'Fallon, MO? For Java Software Engineer jobs in O'Fallon, MO, the most frequently searched job titles are:
What cities near O'Fallon, MO are hiring for Java Software Engineer jobs? Cities near O'Fallon, MO with the most Java Software Engineer job openings:
Java Software Engineer jobs near you
Software Engineer

Software Engineer

Software Technology Inc

Wildwood, MO

Other

Posted 12 days ago

Job description

Job Title

Position Overview

With limited oversight, implements well-defined technical problems or solutions. With knowledge of general programming languages, frameworks and deployment methodologies, creates API-based applications from concept to finished product with a cloud-first emphasis. Works in a collaborative environment to build and deploy effective and efficient products with well-tested code.

Responsibilities

Principle Duties

  • Designs, develops, tests, deploys and supports API-based systems focusing on industry best practices with a cloud-first emphasis.
  • Manages individual tasks and timelines under limited supervision.
  • Seeks continuous quality improvements for supported systems
  • Assists in problem analysis and submits recommendations when appropriate.
  • Performs other duties as assigned.
Requirements

Required

3+ year of software development experience • Proficiency in multiple tools of the full stack covering frontend frameworks, databases and deployments • Experience with a variety of general programming languages • Demonstrated ability to quickly learn new technologies • Ability to solve moderately complex problems, drawing upon technical experience, precedents, and judgement • Strong communication skills, including ability to explain complex information in straightforward situations

Preferred

Insurance and/or reinsurance industry knowledge Experience with a variety of database technologies

Technical Requirements (can be modified to be specific to role/team)

• JavaScript/Java/Groovy/Go/C#/.Net/Python • Docker/Kubernetes • NodeJS • relational/NoSQL database • Terraform/Ansible • Shell

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