Top 94 Java Developer Jobs in O Fallon, IL

Java Developer
Kashcomp LLC —St. Louis, MO
- $49.22 - $59.27 an hour
- Full-time
- Azure
- Mid-level
- Office
Quick Apply
1d
Junior Java/Web Developer
Sovereign Technologies —St. Louis, MO
- Oracle
- Computer Science
- Bachelor of Science
Java Developer- Direct Hire- 150213
Sovereign Technologies —St. Louis, MO
- Mid-level
- Java
- Python
Sr. Java Programmer
Rely Systems —Belleville, IL
- Mid-level
- Office
- IT
Sr. Java Developer
Sovereign Technologies —St. Louis, MO
- 5 years
- Bachelor's degree
- Training & development
Java Angular Full Stack Engineer
Stellar IT Solutions LLC —St. Louis, MO
- $52 - $58 an hour
- Remote
- Java
- AWS
- Mentoring
Quick Apply
Sr. Java/Web Developer
Sovereign Technologies —St. Louis, MO
- Computer Science
- Bachelor of Science
- SQL
Mulesoft Developer
Equifax —St. Louis, MO
- Full-time
- Hybrid work
- Azure
- Mid-level
- AWS
- Health insurance
- Paid time off
12h
Software II Developer
BJC HealthCare —St. Louis, MO
- $76,252.80 - $124,155.20 a year
- Full-time
- Computer science
- Computer Science
- Mid-level
- Disability insurance
- Health insurance
9d
Software Engineer
Reinventing Geospatial, Inc. (RGi) —St. Louis, MO
- $115,000 - $170,000 a year
- Full-time
- Computer science
- Computer Science
- 5 years
- Paid parental leave
- Health insurance
Software Engineer
Sovereign Technologies —St. Louis, MO
- Computer Science
- Mid-level
- IT
Senior .NET Developer
Sovereign Technologies —St. Louis, MO
- Computer science
- Computer Science
- Mid-level
Software Engineer - Intermediate
Equifax —St. Louis, MO
- Full-time
- Hybrid work
- Azure
- Mid-level
- Office
- Health insurance
- Paid time off
Mid Software Developer
Chenega Agile Real-Time Solutions —O'Fallon, IL
- $75,000 - $100,000 a year
- Full-time
- Background check
- Microsoft Excel
- Bachelor of Science
Lead Java/Microservices Developer
Sovereign Technologies —St. Louis, MO
- Email
- Computer Science
- Mentoring
- Senior level
Mid-level Software Engineer
DLS Engineering —St. Louis, MO
- $100,000 - $105,000 a year
- Full-time
- Background check
- Computer science
- Azure
- Disability insurance
- Health insurance
Quick Apply
Senior Application Development Engineers
Centene Corporation —Clayton, MO
- $148,553.90 - $169,300.00 a year
- Full-time
- Computer science
- Oracle
- Computer Science
- Paid holidays
- Health insurance
Java/J2EE developer Sr.
kollasoft —St. Louis, MO
- Contract
- Oracle
- Mentoring
- Senior level
Quick Apply
Full Stack Software Engineer
Reinventing Geospatial, Inc. (RGi) —St. Louis, MO
- Full-time
- Bachelor of Science
- Writing skills
- Windows
- Paid parental leave
- Health insurance
Senior Software Engineer - St. Louis
LSEG (London Stock Exchange Group) —St. Louis, MO
- Full-time
- Computer science
- Azure
- Computer Science
8d

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Java Developer

Kashcomp LLC
St. Louis, MO

Quick Apply

Job Details

Full-time
$49.22 - $59.27 an hour
1 day ago

Qualifications

Enterprise software
Java
Microservices
AWS
Grafana

Full Job Description

Overview

We are seeking a dynamic and highly skilled Java Developer to join our innovative technology team. In this role, you will be instrumental in designing, developing, and maintaining scalable software solutions that power our core applications. Your expertise will drive the development of robust microservices architectures, RESTful APIs, and cloud-based systems, ensuring high performance and security. This position offers an exciting opportunity to work with cutting-edge technologies and contribute to complex system design within a collaborative Agile environment.

Duties

Develop, test, and deploy high-quality Java applications aligned with business requirements and technical specifications
Design system architecture components using best practices such as design patterns and scalable system principles
Build and maintain RESTful APIs to enable seamless communication between front-end interfaces and back-end services
Collaborate within Agile teams to deliver iterative improvements, participate in sprint planning, stand-ups, and retrospectives
Implement microservices architecture on cloud platforms like AWS or Azure to enhance system scalability and resilience
Integrate third-party APIs and develop custom APIs for internal use, ensuring secure data exchange via RBAC (Role-Based Access Control)
Utilize version control tools such as GitHub or SVN for code management, along with CI/CD pipelines for continuous integration and delivery
Optimize application performance by applying best practices in application development, system design, and scalability techniques
Contribute to front-end development efforts using JavaScript frameworks like React or Express for full-stack project delivery
Maintain comprehensive documentation of system designs, API specifications, and development processes

Experience

Proven software engineering experience with a strong focus on Java development in enterprise environments
Hands-on experience designing scalable systems using microservices architecture and RESTful API standards
Familiarity with IT infrastructure components including Linux servers, cloud platforms (AWS/Azure), and networking fundamentals
Knowledge of web development technologies such as JavaScript, React, Express.js, along with proficiency in SQL databases like MySQL or SQL Server
Experience working within Agile software development methodologies including Scrum or Kanban
Strong understanding of version control systems such as GitHub or SVN and CI/CD tools for automated deployment pipelines
Background in application development across multiple programming languages including C#, Python, C++, VBA or C is a plus
Exposure to system security concepts like RBAC and best practices for scalable, secure API integrations
Ability to collaborate effectively with cross-functional teams including front-end developers, QA engineers, and system architects

Join us to be part of a forward-thinking team that values innovation, technical excellence, and continuous growth. If you’re passionate about building impactful software solutions using the latest technologies in a fast-paced environment, we want to hear from you!

Pay: $49.22 - $59.27 per hour

Work Location: In person

Quick Apply

Refine Your Search

Java Developer jobs in O Fallon, IL

Java Developer

Junior Java/Web Developer

Java Developer- Direct Hire- 150213

Sr. Java Programmer

Sr. Java Developer

Java Angular Full Stack Engineer

Sr. Java/Web Developer

Mulesoft Developer

Software II Developer

Software Engineer

Software Engineer

Senior .NET Developer

Software Engineer - Intermediate

Mid Software Developer

Lead Java/Microservices Developer

Mid-level Software Engineer

Senior Application Development Engineers

Java/J2EE developer Sr.

Full Stack Software Engineer

Senior Software Engineer - St. Louis

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