Top 96 Java developer Jobs in O'fallon, Il

Software Engineer - Intermediate
Equifax —St. Louis, MO
- Full-time
- Hybrid work
- Azure
- Mid-level
- Office
- Health insurance
- Paid time off
GIS DevOps Instructor (Full-Time)
Claim Academy —St. Louis, MO
- Full-time
- Classroom
- Azure
- Computer Science
- Paid holidays
- Health insurance
6d
Lead DevOps Engineer, Cloud Products and Patterns
London Stock Exchange Group —St. Louis, MO
- Full-time
- Computer science
- Azure
- Computer Science
Managed Services - AI Agent Build & DevOps - Manager
PRICE WATERHOUSE COOPERS —St. Louis, MO
- $99,000 - $232,000 a year
- Oracle
- Computer Science
- DevOps
- Paid holidays
- Health insurance
GIS DevOps Assistant Instructor
Claim Academy —St. Louis, MO
- Classroom
- Azure
- Computer Science
6d
Principal Software Engineer
Trevity LLC —St. Louis, MO
- Full-time
- Azure
- Java
- Master's degree
Quick Apply
Sr Manager Platform Development - Data Services (Databricks, AI)
National Information Solutions Cooperative (NISC) —St. Louis, MO
- Hybrid work
- Oracle
- Computer Science
- Office
Software Engineer II - Remote
CSAA Insurance Services, Inc. —St. Louis, MO
- $41.07 - $54.76 an hour
- Full-time
- Remote
- Computer science
- Computer Science
- Mid-level
- 401(k) matching
7d
MES Application Developer (remote)
FuseGlobal —St. Louis, MO
- Up to $72 an hour
- 7 years
- Azure
- C++
- Disability insurance
- Health insurance
Quick Apply
Software Development Engineer II- Back End
Esri —St. Louis, MO
- $97,240 - $162,240 a year
- Azure
- Computer Science
- System design
- Relocation assistance
Alteryx Workflow Developer
Vytwo —United States
- Full-time
- Remote
- Engineering
- 3 years
- Java
Quick Apply

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Senior Business Intelligence Developer
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Build and integrate AI/agentic tooling (MCP servers, chat agents) against governed, access controlled datalake. Compensation:* $50-$55/hr.
$50 - $55 an hour
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Full Stack Developer
WILLIAM C BROWN INC (WCBinc) —St. Louis, MO
The Full Stack Developer will also need to have the ability to modify both front and back-end application code during the implementation phases.
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Software Developer– Columbus OH
Cogent Communications —Columbus, OH
Performing requirements analysis and proof of concept or prototyping as needed for engineering and design of corporate applications.
$80,000 - $110,000 a year
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Java AWS Spark Lead Software Engineer
J2B Global LLC —Columbus, OH
Experience with Java/J2EE, including core APIs, web services, multi-threaded programming, design patterns, and Service Oriented Architecture (SOA)Experience…
13d

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java developer jobs near o'fallon, il

Software Engineer - Intermediate

Equifax -
St. Louis, MO

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Job Details

Full-time

Benefits

Health insurance
Paid time off
401(k) matching

Qualifications

Performance tuning
Software engineering
Test Automation Development (Quality assurance practices)
CSS
Engineering development testing
Quality control product testing
Tooling
System performance optimization
JavaScript
Web applications
Front-end component implementation
AI-driven automation
Scalability and Performance Testing (system development)
Developer tools
Design (software development lifecycle)

Full Job Description

St. Louis
United States of America
Technology
Full time
6/15/2026
J00176451

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Manage Preferences

Equifax is where you can power your possible. If you want to achieve your true potential, chart new paths, develop new skills, collaborate with bright minds, and make a meaningful impact, we want to hear from you.

Equifax is seeking creative, high-energy, and driven software engineers with hands-on development skills to work on a variety of meaningful projects. Our software engineering positions provide you the opportunity to join a team of talented engineers working with leading-edge technology. You are ideal for this position if you are a forward-thinking, AI-augmented, and enthusiastic software engineer who is passionate about leveraging modern tools to accelerate delivery and solve complex problems.

T o adhere to our corporate location policies, this resource will be required to be local to the surrounding St.Louis, MO.

This position does not offer immigration sponsorship (current or future) including F-1 STEM OPT extension support.

What you will do

Perform general application development activities, including unit testing, code deployment to development environment, and technical documentation. Leverage AI-assisted coding tools (e.g., GitHub Copilot) to optimize development velocity and code quality.
Participates in estimation process, use case specifications, reviews of test plans and test cases, requirements, and project planning. Diagnose and resolve performance issues.
Documents code/processes so that any other developer is able to dive in with minimal effort.
Develop, and operate high-scale applications from the backend to UI layer, focusing on operational excellence, security, and scalability.
Apply modern software development practices (serverless computing, microservices architecture, CI/CD, infrastructure-as-code, etc.). Work across teams to integrate our systems with existing internal systems, Data Fabric, CSA Toolset.
Actively explore and advocate for the integration of generative AI and automation tools into the team's daily workflows to eliminate repetitive tasks.
Participate in technology roadmap and architecture discussions to turn business requirements and vision into reality. Participate in a tight-knit engineering team employing agile software development practices.
Triage product or system issues and debug/track/resolve by analyzing the sources of issues and the impact on network, or service operations and quality.
Able to write, debug, and troubleshoot code in mainstream open-source technologies. Lead effort for Sprint deliverables, and solve problems with medium complexity.

What experience you need

Bachelor's degree or equivalent experience.
2+ years experience working with software design and Java, Python, and Javascript programming languages.
Experience integrating AI development accelerators/LLM tools into your daily coding, debugging, and testing workflows.
2+ years experience with software build management tools like Maven or Gradle.
2+ years experience with HTML, CSS, and frontend/web development.
2+ years experience with software testing, performance, and quality engineering techniques and strategies.
2+ years experience with Cloud technology: GCP, AWS, or Azure

What could set you apart

AI-Augmented Developer: Proven track record of using generative AI tools to safely accelerate code generation, automate documentation, and optimize legacy refactoring while maintaining strict data security and code integrity guidelines.
Quality-First Engineer: Owns product outcomes end-to-end; expert at measuring and upholding high-quality standards across QA, UAT, and PROD using automated QE tools and JUnit.
Java Specialist: Advanced development in Java 17, SpringBoot, and Microservices/SOA, managing source control via Git/GitHub and builds through Maven/Gradle.
Independent Agile Practitioner: Self-directed contributor experienced in navigating priority shifts with minimal supervision within CI/CD (Jenkins) and Atlassian ecosystems.
Cloud & Innovation Forward: Cloud-ready professional (GCP/AWS/Azure Certification preferred) with a passion for staying ahead of emerging tech trends and modernizing software delivery models.

#LI-Hybrid

#LI-ES1

We offer comprehensive compensation and healthcare packages, 401k matching, paid time off, and organizational growth potential through our online learning platform with guided career tracks.

Are you ready to power your possible? Apply today, and get started on a path toward an exciting new career at Equifax, where you can make a difference!

Who is Equifax?

At Equifax, we believe knowledge drives progress. As a global data, analytics and technology company, we play an essential role in the global economy by helping employers, employees, financial institutions and government agencies make critical decisions with greater confidence.

We work to help create seamless and positive experiences during life’s pivotal moments: applying for jobs or a mortgage, financing an education or buying a car. Our impact is real and to accomplish our goals we focus on nurturing our people for career advancement and their learning and development, supporting our next generation of leaders, maintaining an inclusive and diverse work environment, and regularly engaging and recognizing our employees. Regardless of location or role, the individual and collective work of our employees makes a difference and we are looking for talented team players to join us as we help people live their financial best.

Equifax is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, veteran status, and other legally protected characteristics.

Apply Now

Refine Your Search

java developer jobs in o'fallon, il

Software Engineer - Intermediate

GIS DevOps Instructor (Full-Time)

Lead DevOps Engineer, Cloud Products and Patterns

Managed Services - AI Agent Build & DevOps - Manager

GIS DevOps Assistant Instructor

Principal Software Engineer

Sr Manager Platform Development - Data Services (Databricks, AI)

Software Engineer II - Remote

MES Application Developer (remote)

Software Development Engineer II- Back End

Alteryx Workflow Developer

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