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Junior Java Programming Jobs in Missouri (NOW HIRING)

CYNET SYSTEMS

Java Technical Lead

Saint Louis, MO · On-site

$55 - $60/hr

... applications using Java. * Minimum of 3-5 years of experience building web services and cloud ... Facilitates code reviews and mentors junior developers. * Uses object-oriented techniques and ...

Staffingine LLC

Automation Engineer

Saint Louis, MO · On-site

... and Selenium Java Testing to drive quality assurance initiatives * Collaborate with cross ... junior team members and share best practices in test automation and quality assurance Skills ...

Staffingine LLC

WCS Developer

Springfield, MO · On-site

Provide technical leadership and mentoring to junior engineers Required Skills: * Minimum 8 years ... HTML/HTML5,J2EE,Java,JavaScript,MySQL,Apache Struts, HCL Commerce, Java Server Pages (JSP ...

Walmart

Staff, Software Engineer

Noel, MO · On-site

$110K - $220K/yr

... mentor junior team members. What You Will Bring * Proficiency in Java for backend services ... Exposure to developer productivity, observability, or DevOps tools. * Contributions to open-source ...

Walmart

Staff, Software Engineer

Anderson, MO · On-site

$110K - $220K/yr

... mentor junior team members. What You Will Bring * Proficiency in Java for backend services ... Exposure to developer productivity, observability, or DevOps tools. * Contributions to open-source ...

Walmart

Staff, Software Engineer

Cassville, MO · On-site

$110K - $220K/yr

... mentor junior team members. What You Will Bring * Proficiency in Java for backend services ... Exposure to developer productivity, observability, or DevOps tools. * Contributions to open-source ...

Meridian Systematics

Cloud Engineer

Saint Louis, MO · On-site

$110K - $136K/yr

... documentation, and mentor junior developers. Qualifications & Requirements * Clearance ... Programming languages: Go, Python, Ruby, or Java. * Web basics: HTML, CSS, Markdown. * AWS ...

Meridian Systematics

Cloud Engineer

Saint Louis, MO · On-site

$150 - $200/hr

... documentation, and mentor junior developers. Qualifications & Requirements * Clearance ... Programming languages: Go, Python, Ruby, or Java. * Web basics: HTML, CSS, Markdown. * AWS ...

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Junior Java Programming information

See Missouri salary details

$57.2K

$100.2K

$151K

How much do junior java programming jobs pay per year?

As of Sep 9, 2026, the average yearly pay for junior java programming in Missouri is $100,202.00, according to ZipRecruiter salary data. Most workers in this role earn between $70,800.00 and $99,900.00 per year, depending on experience, location, and employer.

What does a junior Java programmer do?

A Junior Java Programmer is an entry-level software developer who specializes in writing, testing, and maintaining Java applications. They typically work under the supervision of senior developers, assisting with coding, debugging, and implementing features. Their tasks often include fixing bugs, participating in code reviews, and learning best practices in software development. This role is ideal for individuals who are new to programming and looking to gain practical experience in Java development within a team environment.

What are the key skills and qualifications needed to thrive as a junior Java programmer?

To thrive as a Junior Java Programmer, you need a solid understanding of Java fundamentals, object-oriented programming principles, and a relevant degree or coursework in computer science. Familiarity with integrated development environments (IDEs) like Eclipse or IntelliJ IDEA, version control systems such as Git, and basic knowledge of build tools like Maven is typically expected. Problem-solving abilities, attention to detail, and good teamwork and communication skills help you stand out in this role. These skills and qualities are crucial for writing reliable code, collaborating effectively, and adapting quickly in a dynamic software development environment.

What are some common challenges a junior Java programmer might face when starting out, and how can they overcome them?

As a Junior Java Programmer, you may initially find it challenging to understand large codebases, manage debugging complex issues, or adapt to new frameworks used by the team. It's common to feel overwhelmed by unfamiliar tools or best practices. To overcome these challenges, actively seek mentorship from senior developers, participate in code reviews, and dedicate time to practice and learn outside of daily tasks. Collaboration and communication within your team are key to quickly building your skills and confidence in the role.

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

AspectJunior Java ProgrammingJunior Software Developer
Required CredentialsJava certifications, basic programming knowledgeGeneral programming skills, possibly Java certifications
Work EnvironmentDevelopment teams, Java-focused projectsVaried projects, multiple languages, broader scope
Employer & Industry UsageTech companies, software firms using JavaWide range of industries, including tech, finance, and startups
Common Search & ComparisonYesYes

Junior Java Programming typically focuses on Java-specific skills and certifications, working mainly within Java development teams. In contrast, Junior Software Developer roles may involve multiple programming languages and broader responsibilities across various projects. Both roles are entry-level and often overlap in skills, but Java programming is more specialized.

What are the most commonly searched types of Java Programming jobs in Missouri?

The most popular types of Java Programming jobs in Missouri are:

Junior Java Programming jobs near you
Infographic showing various Junior Java Programming job openings in Missouri as of August 2026, with employment types broken down into 1% Internship, 79% Full Time, 14% Part Time, 5% Contract, and 1% Nights. Highlights an 87% Physical, 4% Hybrid, and 9% Remote job distribution, with an average salary of $100,202 per year, or $48.2 per hour.

Principal Software Engineer - Java/Cloud (Onsite Position)

Springfield, MO • On-site

O'Reilly Auto Parts
Individual, Family and Community Social Assistance • 10K+ employees
Learn more about O'Reilly Auto Partsexternal

Full-time

Medical, Dental, Vision, Retirement, PTO

Re-posted 2 days ago

O'Reilly Auto Parts rating

5.3

Company rating: 5.3 out of 10

Based on 1,916 frontline employees who took The Breakroom Quiz

558th of 740 rated retailers

Job description

We are looking for a Principal Engineer with deep expertise in building high-throughput, low-latency, and highly available distributed systems. In this role, you will lead the technical vision, architectural patterns, and execution for critical backend services using Java, Spring Boot, and Google Cloud Platform (GCP) or similar experience in other cloud platforms like Azure / AWS.
Beyond core architecture, you will serve as a technical beacon-hands-on with profiling and troubleshooting complex JVM/Kubernetes environments, driving resilience and security best practices, and mentoring engineering teams to foster a culture of technical excellence.
This position is based at our headquarters in Springfield, Missouri, and requires on-site work. Hybrid or remote work is not offered for this role
Key Responsibilities
Technical Architecture & Design
  • Design and execute end-to-end distributed backend architectures using Microservices, Event-Driven Architecture (EDA), and orchestration/choreography patterns.
  • Build resilient, fault-tolerant applications using resilience patterns (Circuit Breaker, Bulkhead, Retry, Rate Limiting).
  • Architect systems optimized for high throughput and low latency, maintaining strict SLA/SLO requirements.
  • Enforce robust security practices across API design, authentication/authorization (OAuth2/OIDC), zero-trust networking, and data encryption at rest and in transit.

Cloud Platform, Infrastructure & DevOps
  • Design, build, and maintain containerized workloads running on (GKE)
  • Manage API landscapes using Apigee API Management.
  • Leverage cloud-native data and storage solutions including Google Cloud Spanner, Memory store (Valkey/Redis), and Google Cloud Storage (GCS).
  • Drive Infrastructure-as-Code (IaC) and deployment automation using Terraform,
  • Helm, and modern CI/CD pipelines.
  • Architect end-to-end Observability strategies (distributed tracing, structured logging, metrics dashboards, and alerting) across microservices.

Performance Tuning & Troubleshooting
  • Lead complex debugging and diagnostic efforts across distributed microservice topologies.
  • Deep-dive into JVM performance, garbage collection (GC) tuning, and runtime profiling (e.g., thread dumps, heap dumps, memory leak analysis).
  • Troubleshoot Kubernetes runtime issues (ingress routing, pod lifecycles, network policies, resource contention).

Leadership & Mindset
  • Champion a "can-learn, can-do" attitude-proactively adopting new technologies, proving out POCs, and tackling unsolved engineering challenges.
  • Mentor, coach, and elevate junior and mid-level developers through code reviews, architectural design sessions, and technical workshops.
  • Partner with product management, platform teams, and security teams

Required Qualifications & Skills
Technical Expertise
  • Languages & Frameworks: Master-level proficiency in Java and the Spring / Spring Boot ecosystem (Spring Security, Spring Data, Spring Cloud).
  • Distributed Systems & Microservices: Thorough understanding of microservices patterns (Saga, CQRS, Event-Driven, Orchestration vs. Choreography) and security protocols.
  • Resilience Engineering: Experience configuring resilience frameworks (e.g., Resilience4j, Istio service mesh patterns).
  • Google Cloud Platform (GCP): Strong hands-on experience with GKE, Apigee, Spanner, Memorystore (Valkey), and GCS.
  • Kubernetes & Cloud Native: Deep practical knowledge of Kubernetes internals, architecture, networking, and cluster troubleshooting.
  • Infrastructure & Automation: Skilled in Terraform, Helm, and CI/CD pipeline construction.
  • Diagnostics: Proven ability to profile the JVM, read flame graphs/heap dumps, and analyze thread behavior under heavy load.

Soft Skills & Soft Assets
  • Strong ownership mindset with a track record of driving projects from concept to production.
  • Demonstrated history of mentoring engineers and setting high code quality standards.
  • Excellent communication skills to articulate complex architectural decisions to both technical and non-technical stakeholders.

Nice to Have
  • Experience with build automation tools like Gradle.
  • GCP Professional Cloud Architect or Developer certifications.
  • Hands-on experience with Service Mesh implementations (Istio/Anthos Service Mesh).

O'Reilly Auto Parts has a proven track record of growth and stability. O'Reilly is full of successful career stories and believes in a strong promote-from-within philosophy, encouraging you to grow your career along with the organization.
Total Compensation Package:
  • Competitive Wages & Paid Time Off
  • Stock Purchase Plan & 401k with Employer Contributions Starting Day One
  • Medical, Dental, & Vision Insurance with Optional Flexible Spending Account (FSA)
  • Team Member Health/Wellbeing Programs
  • Tuition Educational Assistance Programs
  • Opportunities for Career Growth

O'Reilly Auto Parts is an equal opportunity employer. The Company does not discriminate on the basis of race, religion, color, national origin or ancestry (including immigration status or citizenship), sex, sexual orientation, gender identity, pregnancy (including childbirth, lactation, and related medical conditions,) age (40 and over), veteran status, uniformed service member status, physical or mental disability, genetic information (including testing or characteristics) or another protected status as defined by local, state, or federal law, as applicable.
Qualified individuals with a disability may be entitled to reasonable accommodation under the Americans with Disabilities Act. If you require a reasonable accommodation during the application or employment process, please send an email to: rar@oreillyauto.com or call (800) 471-7431 option , and provide your requested accommodation, and position details.

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