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Senior Tcs Java Developer Jobs in Saint Louis, MO

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Java Developer

O Fallon, MO · On-site

$47.75 - $61.75/hr

The Sr. Software Engineer opportunity we have in St. Louis, MO. All candidates will be required to take a Glider exam , which is on recorded video and may be reviewed by the client , prior to ...

Worky

Senior Software Developer

O Fallon, IL · On-site

$100 - $125/hr

We are seeking a Java Developer with experience developing Web applications to be part of the ... As a Senior Software Developer, the selected individual will work hands‑on with developer and ...

kollasoft

Java/J2EE developer Sr.

Saint Louis, MO · On-site

$49.50 - $64.25/hr

Java J2EE Developer in St.Louis,MO Duration: 2-3 Years Contract Need GC or USC only Communication: Present ideas assertively, aggressively and not be easily ignored. * Be articulate, persuasive and ...

kollasoft

Java/J2EE developer Sr.

Saint Louis, MO · On-site

$49.50 - $64.25/hr

Java J2EE Developer in St.Louis,MO Duration: 2-3 Years Contract Need GC or USC only Communication: Present ideas assertively, aggressively and not be easily ignored. * Be articulate, persuasive and ...

kollasoft

Java/J2EE developer Sr.

Saint Louis, MO · On-site

$49.50 - $64.25/hr

Java J2EE Developer in St.Louis,MO Duration: 2-3 Years Contract Need GC or USC only Communication: Present ideas assertively, aggressively and not be easily ignored. * Be articulate, persuasive and ...

Zentek Infosoft Inc.

Java Engineer

O Fallon, MO · On-site

$48.50 - $66.50/hr

This person would fit well into a senior or lead developer role, where they can leverage their deep Java expertise, cloud knowledge, and problem-solving skills to drive impactful projects.

Palnar

Backend Java Engineer W/IBM MQ Exp

O Fallon, MO · On-site

$47.25 - $61.25/hr

Senior Software Development Engineer (Specialty) - Level 7 Location: O'Fallon, MO/Hybrid Duration: 12 months * Java * Proficient in core java * Spring boot preferred. * Messaging services * MQ's or ...

ITTConnect

Senior AI Engineer (Java)

Saint Louis, MO · On-site

$117K - $154K/yr

ITTConnect is seeking an experienced Senior AI Engineer (JAVA) to work for a client that is a ... Collaborate with AI/ML, product, platform, data, and DevOps teams. * Participate in architecture ...

ITTConnect

Senior AI Engineer (Java)

Saint Louis, MO · On-site

$121K - $159K/yr

ITTConnect is seeking an experienced Senior AI Engineer (JAVA) to work for a client that is a ... Collaborate with AI/ML, product, platform, data, and DevOps teams. Participate in architecture ...

MasterCard

Senior Software Engineer - Java

O Fallon, MO · Hybrid

$116K - $153K/yr

Title and Summary Senior Software Engineer - Java Overview: Mastercard's Enterprise Credit Risk ... SQL, PostgreSQL / Oracle, Kafka, JSON / XML APIs oCloud, DevOps & Engineering: Azure or AWS, Docker ...

Mastercard, Inc.

Senior Software Engineer - Java

O Fallon, MO · On-site

$116K - $153K/yr

Title and Summary Senior Software Engineer - Java Overview: Mastercard's Enterprise Credit Risk ... SQL, PostgreSQL / Oracle, Kafka, JSON / XML APIs oCloud, DevOps & Engineering: Azure or AWS, Docker ...

SV Tech Systems Inc

Senior Java Software Engineer.

Clayton, MO · On-site

$116K - $153K/yr

Senior Java Software Engineer. Location: Weldon or Clayton, MO Duration: Long term Contract Face to Face interview. Responsibilities As a Senior Software Engineer on the Vehicle Management Team, you ...

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How much do senior tcs java developer jobs pay per hour?

As of Sep 9, 2026, the average hourly pay for senior tcs java developer in Saint Louis, MO is $61.08, according to ZipRecruiter salary data. Most workers in this role earn between $53.51 and $68.22 per hour, depending on experience, location, and employer.

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Senior Software Engineer -Java

O Fallon, MO • On-site

Ports North
See more jobs at Ports Northexternal

$80 - $100/hr

Other

Posted 21 days ago

Key responsibilities

  • Develop enterprise applications using Java and front-end technologies such as Angular or React.

  • Work with business partners to gather requirements, define product features, and ensure alignment with business needs.

  • Support platform resilience, security, scalability, and ensure software design supports zero downtime in production.

Job description

Role Overview

You will design and build the next-generation Decision Management Platform, the real-time system that scores and approves billions of payment transactions. This is a hands-on role where you will write code, run prototypes, and use AI coding tools every day to ship faster and at higher quality. You will be joining a high-growth team that is actively expanding to meet increasing scale and impact.

You will work directly with senior engineers, architects, and product managers to deliver features that make the platform faster, more reliable, and more cost-efficient to run.

Key Responsibilities
  • Develop enterprise applications using a Java technology stack with Angular or React as front-end technologies.
  • Participate in gathering and refining business requirements
  • Ensure software designs align with Mastercard's Enterprise Architecture and leverage enterprise services.
  • Ensure product development meets Mastercard's business needs.
  • Apply Mastercard standard development methodologies, follow technology standards, and ensure projects are appropriately documented.
  • Ensure software and system design support the goal of zero downtime in production.
  • Work closely with business partners on product definition, roadmaps, business case development, and overall team direction.
  • Respond to operational and business concerns related to future programs, projects, or enhancements to ensure consistent delivery of quality services.
  • Support appropriate certifications and compliance requirements, including PCI, GLBA, Safe Harbor, and others.
  • Drive performance engineering of the enterprise software architecture and provide guidance, advice, or training to other application developers.
  • Improve and expand the existing platform by ensuring it is resilient, secure, and scalable.
  • Use AI tools effectively as part of daily development work, including tools such as Claude Code, Copilot, or similar platforms.
Skills Required
  • Excellent communication skills, with the ability to interact across multiple organizational levels and with internal and external customer groups.
  • Strong analytical and problem-solving abilities, with the ability to quickly adapt to new technologies, methodologies, and systems.
  • High energy, strong attention to detail, and the ability to function independently under pressure with a high degree of initiative and self-motivation.
  • Strong interpersonal and relationship-building skills, with a solid track record of developing internal and external partnerships.
  • Proficiency with J2EE, Java 8 or higher, JSP, Servlets, Spring 5, Hibernate, and databases such as Oracle and SQL Server.
  • Experience with SQL and NoSQL databases such as MySQL, PostgreSQL, and MongoDB.
  • Experience with web services (SOAP/RESTful), servers (WebSphere, JBoss, Tomcat), HTML, JavaScript, jQuery, React or Angular, and IDEs such as Microsoft Visual Studio or Eclipse is a plus.
  • Experience with tools such as Maven, Gradle, Jenkins, Chef, and Sonar, as well as methodologies such as Waterfall and Agile.
  • Experience with LLM integration, prompt engineering, and agentic patterns.
Experience
  • Bachelor's degree in information systems, Information Technology, Computer Science, Engineering, or equivalent work experience.
  • More than 7 years of industry experience.

Title Sr Java Developer

Location O'Fallon, MO

Client Industry Finance

Compensation $60-80/hr

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