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Sr Java J2Ee Developer Jobs in O Fallon, MO (NOW HIRING)

Gemini

Java Developer

Saint Louis, MO

$49.50 - $64.25/hr

Java Developer Location: St.Louis, MO - Inperson Interview Job Type: Full Time Only OPT EAD, CPT ... Experience developing applications using Core JAVA, J2EE, SQL Knowledge of design patterns and ...

Sonsoft Inc

-UI Developer with ava J2EE

Saint Louis, MO · On-site

$48.50 - $63.25/hr

At least 6 years of implementation experience in Java/J2EE technologies, Spring, Hibernate * At ... At least 4 years of experience in Server side programming using Core Java, J2EE, Java Servlets, JSP ...

The Giant Bullseye

Senior Java Engineer

Saint Louis, MO · On-site

$55.75 - $71/hr

Overview We are looking for a highly skilled Senior Java Engineer to design, develop, and maintain ... Collaborate with cross-functional teams including DevOps, QA, and product to deliver high-quality ...

Gemini

Java Developer

Saint Louis, MO · On-site

$49.50 - $64.25/hr

Java Developer Location: St.Louis, MO - Inperson Interview Job Type: Full Time Only OPT EAD, CPT ... using Core JAVA, J2EE, SQL • Knowledge of design patterns and implementation experience • ...

AG Technologies

JAVA Developer

Chesterfield, MO · On-site

$50.50 - $65.25/hr

Developing, maintaining and experience migrating Visual Basic/ASP applications to J2EE framework ... Expertise with the Eclipse IDE, and related Java build tools and techniques * Familiarity with ...

Wipro Limited

Senior Java Developer

O Fallon, MO · On-site

$60K - $135K/yr

  • Medical

  • Dental

  • PTO

Senior Java Developer City: O Fallon State/Province: Missouri Posting Start Date: 8/14/26 Wipro Limited (NYSE: WIT, BSE: 507685, NSE: WIPRO) is a leading technology services and consulting company ...

New

Ask IT consulting

JAVA Engineer

Saint Louis, MO

$50.25 - $69/hr

... Java & J2EE Strong experience with Java, J2EE, Struts, Spring, JSF, UML, OOAD, Web Services (SOAP/SOA) and multi-tier software design and development and should be comfortable in a Linux shell ...

w3r Consulting

Senior Software Engineer (Java)

O Fallon, MO · On-site

$116K - $153K/yr

Java 8+, J2EE, Spring, Hibernate * Angular/React front-end development * REST/SOAP APIs and ... Cloud-Native Architecture & DevOps * Cloud-Native / AWS or Other Cloud Platforms * CI/CD and ...

ACI Infotech

Java Developer

Lake Saint Louis, MO · On-site

$48.25 - $62.50/hr

Onsite Sr. Java Developer Location: St. Louis, MO In short, I require ::-- Java , spring boot , microservices and AWS ( cloud is compulsory , if not AWS , any other cloud will work). Responsibilities ...

Jobsbridge

Sr. Java Developer

Saint Louis, MO

$55.75 - $71/hr

Be it core Java, full-stack Java, Web/UI designers, Big Data or Cloud or Mobility developers/architects, we have them all. Core Java (Mandatory) Web Service [REST and SOAP] (Mandatory) Hibernate or ...

Jobsbridge

Sr. Java Developer

Saint Louis, MO

$55.75 - $71/hr

Be it core Java, full-stack Java, Web/UI designers, Big Data or Cloud or Mobility developers/architects, we have them all. Core Java (Mandatory) Web Service [REST and SOAP] (Mandatory) Hibernate or ...

Sonsoft Inc

.Net Developer

Saint Louis, MO · On-site

$47 - $62/hr

Preferred At least 4 years of experience in in Java, J2EE Skills At least 4 years of experience in ... Experience in Server side programming using Java Servlets, JSP, JDBC, JavaBeans, EJB, log4J.

Jobsbridge

Sr. Java Developer

Saint Louis, MO

$55.75 - $71/hr

Be it core Java, full-stack Java, Web/UI designers, Big Data or Cloud or Mobility developers/architects, we have them all. Core Java (Mandatory) Web Service [REST and SOAP] (Mandatory) Hibernate or ...

Ask IT consulting

Java Architect

Saint Louis, MO

$61.25 - $82.75/hr

Job Responsibilities Manage and mentor a team of developers and analysts throughout the entire ... with J2EE architecture and design Preference for some experience with core Java, J2EE, and DI ...

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All JobsSr Java J2Ee Developer JobsSr Java J2Ee Developer Jobs in O'Fallon, MO

Sr Java J2Ee Developer information

See O Fallon, MO salary details

$10

$58

$80

How much do sr java j2ee developer jobs pay per hour?

As of Aug 18, 2026, the average hourly pay for sr java j2ee developer in O'Fallon, MO is $58.77, according to ZipRecruiter salary data. Most workers in this role earn between $51.49 and $65.67 per hour, depending on experience, location, and employer.

What is a Sr Java J2EE developer?

Sr Java J2EE Developers are experienced software engineers who specialize in building, deploying, and maintaining enterprise-level applications using Java and the Java 2 Platform, Enterprise Edition (J2EE). They work with technologies like Servlets, JSP, EJB, and frameworks such as Spring and Hibernate to develop scalable, secure, and reliable software solutions. Senior developers often lead teams, design system architecture, and ensure best coding practices are followed throughout the software development lifecycle.

What are some common challenges Sr Java J2EE developers face when working on large-scale enterprise applications?

Sr Java J2EE Developers often encounter challenges such as managing application scalability, ensuring code maintainability, and integrating with legacy systems. Large-scale projects typically involve coordinating with cross-functional teams, which requires effective communication and collaboration skills. Additionally, staying updated with evolving frameworks and best practices is crucial to address performance bottlenecks and maintain security. Proactively addressing these challenges is essential for delivering robust, high-quality enterprise solutions.

What are the key skills and qualifications needed to thrive as a Sr Java J2EE developer, and why are they important?

To thrive as a Sr Java J2EE Developer, you need advanced proficiency in Java programming, expertise in J2EE frameworks, and a bachelor's degree in computer science or a related field. Familiarity with tools like Spring, Hibernate, Maven, RESTful APIs, and version control systems such as Git is typically required. Strong problem-solving abilities, effective communication, and leadership skills make a developer stand out in this senior role. These competencies are crucial for designing robust enterprise applications, collaborating with cross-functional teams, and leading projects to successful completion.

What is the difference between Sr Java J2Ee Developer vs Java Software Engineer?

AspectSr Java J2Ee DeveloperJava Software Engineer
Required CredentialsBachelor's in CS or related, Java certifications often preferredBachelor's in CS or related, Java certifications beneficial
Work EnvironmentDevelops enterprise applications, often in large teamsDesigns and develops Java applications, may work in teams or individually
Industry UsageCommon in finance, healthcare, and enterprise sectorsUsed across various industries including tech, finance, and startups
Search & Comparison IntentOften compared for seniority, responsibilities, and skillsCompared for roles, skills, and career progression

While both roles involve Java development, Sr Java J2Ee Developers typically focus on enterprise-level applications with more experience and responsibilities, whereas Java Software Engineers may work on a broader range of Java projects, including both enterprise and consumer applications.

What are popular job titles related to Sr Java J2Ee Developer jobs in O'Fallon, MO?

For Sr Java J2Ee Developer jobs in O'Fallon, MO, the most frequently searched job titles are:

What cities near O'Fallon, MO are hiring for Sr Java J2Ee Developer jobs?

Cities near O'Fallon, MO with the most Sr Java J2Ee Developer job openings:

Sr Java J2Ee Developer jobs near you
Infographic showing various Sr Java J2Ee Developer job openings in O'Fallon, MO as of June 2026, with employment types broken down into 54% Full Time, and 46% Contract. Highlights an 93% In-person, and 7% Hybrid job distribution, with an average salary of $122,250 per year, or $58.8 per hour.

Java Developer

Gemini

Saint Louis, MO

$49.50 - $64.25/hr

Full-time

Re-posted 20 days ago

Job description

Company Description

https://www.gemini-us.com/

Job Description

Hi

Hope you are doing well. I am Rajesh from GEMINI. We have the following exciting opportunity open with one of our clients. Here is the job description for your review. If you are interested in this, please send me your updated resume along with availability.

Job Title: Java Developer
Location: St.Louis, MO - Inperson Interview

Job Type: Full Time

Only OPT EAD, CPT EAD, H4 EAD, L2 EAD, H1B Visa Transfer

JOB DETAILS:

Below highlighted skills are mandatory.

         Experience developing applications using Core JAVA, J2EE, SQL

         Knowledge of design patterns and implementation experience

         Experience of creating Web Services (Soap / Rest)

         Knowledge of MVC framework such as Spring, Spring Boot

         Knowledge of ORM framework such as Hibernate

         Should have worked with Maven/Gradle, JIRA/Rally, Bamboo/Jenkins/Hudson

         Good experience with database and SQL

         Good experience working in Agile/Scrum teams

         Experience in the following Development Technologies:

jUnit

Bamboo/Jenkins

GIT

Oracle

Spring Batch

Spring Boot

 

PROVIDE THE FOLLOWING PERSONAL DETAILS IN COVER LETTER:

Full Name:
Current Location:
Contact Details:
E-Mail ID:
Availability Status:
Willing to Relocate:
Visa Status:
Salary Expectation:
LinkedIn Profile:
Skype ID:

Thank you,

Rajesh N

Lead Talent Acquisition Specialist 

Gemini Consulting & Services

3636 S Geyer Rd # 270, St. Louis, MO 63127, United States

Phone: 314-571-5859

www.gemini-us.com

Additional Information

All your information will be kept confidential according to EEO guidelines.

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