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Junior Java Software Engineer Jobs in Saint Louis, MO

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 ...

Senior Software Engineer

O Fallon, MO · On-site +1

$114K - $151K/yr

... junior engineers Deliver department and external presentations sharing results with stakeholders All About You Strong software engineering experience writing applications using Java Spring Boot ...

Senior Software Engineer

O Fallon, MO · On-site

$114K - $151K/yr

... junior engineers • Deliver department and external presentations sharing results with stakeholders All About You • Strong software engineering experience writing applications using Java Spring ...

Senior Software Engineer

O Fallon, MO · On-site

$114K - $151K/yr

... junior team members through all phases of the software development lifecycle, and ensuring ... using Java, Spring boot, Kafka, C++, JNI or similar technologies. • BS in Computer Science or ...

Senior Software Engineer

O Fallon, MO

$114K - $151K/yr

... junior team members through all phases of the software development lifecycle, and ensuring ... Experience with Java/J2EE Experience with cryptographic primitives, concepts, and protocols Good ...

Senior Software Engineer

O Fallon, MO

$114K - $151K/yr

Title and Summary Senior Software Engineer Who is Mastercard? Mastercard is a global technology ... Build and own Java services and APIs that deliver AI-powered features, ensuring performance ...

Senior Software Engineer

O Fallon, MO · On-site

$114K - $151K/yr

We are looking for a Senior AI Java Engineer (Hands-on IC) to deliver AI-driven capabilities across ... This role blends Software Engineering (deterministic systems and reliable services) with AI ...

Senior Software Engineer- RPPS Platform

O Fallon, MO · Remote

$114K - $151K/yr

The position requires strong expertise in Java, Spring Boot, API development, and modern front-end ... Role As a Senior Software Engineer, you will: Design, develop, test, deploy, and maintain scalable ...

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Showing results 1-20

Junior Java Software Engineer information

See Saint Louis, MO salary details

$59.3K

$103.9K

$156.5K

How much do junior java software engineer jobs pay per year?

As of Jul 19, 2026, the average yearly pay for junior java software engineer in Saint Louis, MO is $103,858.00, according to ZipRecruiter salary data. Most workers in this role earn between $73,400.00 and $103,500.00 per year, depending on experience, location, and employer.

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

To thrive as a Junior Java Software Engineer, you need a solid understanding of Java programming, object-oriented principles, data structures, and typically a bachelor’s degree in computer science or a related field. Familiarity with version control systems like Git, build tools such as Maven or Gradle, and experience with IDEs like IntelliJ IDEA or Eclipse are common technical requirements. Strong problem-solving, eagerness to learn, and effective teamwork are standout soft skills in this role. These skills ensure you can write reliable code, collaborate efficiently, and adapt to evolving technical challenges in software development projects.

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

AspectJunior Java Software EngineerJava Developer
Required CredentialsTypically a bachelor's degree in Computer Science or related field; some certifications like Oracle Java CertificationSimilar credentials; often holds Java certifications and a degree in a related field
Work EnvironmentEntry-level position in development teams, often under supervision, focusing on coding and testingCan be entry to mid-level, involved in designing, coding, and maintaining Java applications
Employer & Industry UsageUsed across tech companies, startups, and corporate IT departmentsCommonly used in software development firms, tech companies, and enterprise environments

While both roles involve Java programming, a Junior Java Software Engineer typically focuses on learning and supporting development tasks under supervision, whereas a Java Developer may have more responsibility in designing and implementing Java applications. The roles often overlap, but the engineer role emphasizes entry-level growth, while the developer role can involve more independent work.

What does a Junior Java Software Engineer do?

A Junior Java Software Engineer is typically responsible for assisting in the development, testing, and maintenance of software applications using the Java programming language. They work under the guidance of more experienced engineers to write code, fix bugs, and contribute to team projects. Junior engineers also learn best practices in software development, participate in code reviews, and continuously improve their technical skills. Their role often includes collaborating with other developers, designers, and quality assurance teams to deliver high-quality software solutions.

What kinds of projects or tasks can a Junior Java Software Engineer expect to work on during their first year?

As a Junior Java Software Engineer, you can expect to work on tasks such as fixing bugs, writing unit tests, and developing small features under the guidance of more experienced team members. You'll likely contribute to code reviews, participate in daily stand-ups, and collaborate closely with QA engineers and front-end developers. Over time, you may gradually take on more complex assignments, such as designing modules or integrating third-party APIs. This hands-on experience helps build your technical skills and deepen your understanding of the software development lifecycle.
What are the most commonly searched types of Java Software Engineer jobs in Saint Louis, MO? The most popular types of Java Software Engineer jobs in Saint Louis, MO are:
What are popular job titles related to Junior Java Software Engineer jobs in Saint Louis, MO? For Junior Java Software Engineer jobs in Saint Louis, MO, the most frequently searched job titles are:
What job categories do people searching Junior Java Software Engineer jobs in Saint Louis, MO look for? The top searched job categories for Junior Java Software Engineer jobs in Saint Louis, MO are:
What cities near Saint Louis, MO are hiring for Junior Java Software Engineer jobs? Cities near Saint Louis, MO with the most Junior Java Software Engineer job openings:
Infographic showing various Junior Java Software Engineer job openings in Saint Louis, MO as of July 2026, with employment types broken down into 100% Full Time. Highlights an 100% In-person job distribution, with an average salary of $103,858 per year, or $49.9 per hour.

Senior Java Engineer

The Giant Bullseye

Saint Louis, MO

$55.75 - $71/hr

Contractor

Posted 26 days ago


Job description

Overview
We are looking for a highly skilled Senior Java Engineer to design, develop, and maintain enterprise-grade applications. The ideal candidate will have deep expertise in Java, Spring Boot, and microservices architecture, with strong problem-solving skills and experience in building scalable, high-performance systems.

Key Responsibilities

  • Design, develop, and implement complex backend solutions using Java, Spring Boot, and related frameworks

  • Build and maintain RESTful APIs and microservices for enterprise applications

  • Collaborate with cross-functional teams including DevOps, QA, and product to deliver high-quality software solutions

  • Participate in code reviews, performance optimization, and architectural discussions

  • Ensure application scalability, security, and reliability across deployments

  • Troubleshoot production issues and drive root-cause analysis for resolution

  • Stay current with emerging technologies and best practices in Java development

Required Qualifications

  • 7+ years of hands-on Java development experience

  • Strong proficiency with Spring Boot, Hibernate, JPA, and RESTful API design

  • Experience with microservices architecture and containerization (Docker, Kubernetes)

  • Solid understanding of relational databases (MySQL, PostgreSQL) and caching mechanisms

  • Familiarity with CI/CD pipelines and cloud platforms (AWS, GCP, or Azure)

  • Excellent analytical, debugging, and communication skills

Preferred Experience

  • Exposure to healthcare or other regulated industries is a plus