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  • Java Backend Engineer

     ...proficient in enterprise-grade Java applications, design patterns, and performance optimization.Microservices and REST API Proficiency: Skilled in developing web services, particularly microservices architectures, and REST APIs. This indicates a strong understanding of how... 
    Suggested

    Veracity

    O Fallon, MO
    4 days ago

  • Senior Java Backend Developer

     ...Senior Java Backend Developer O'Fallon, Missouri [Onsite] Job Description: ~6+ years of experience in backend development using...  ...Java. ~ Strong expertise in Core Java, Spring Boot, and REST APIs. ~ Hands-on experience with Kafka / event streaming platforms... 
    Suggested

    E-Solutions

    O Fallon, MO
    5 days ago

  • Full Stack Java Developer

     ...Onsite Project Scope: Seeks a Senior Software Developer who will be a crucial part of our software team. The selected...  ...~8 + years of experience in designing & Developing REST APIs and web services using Java, Spring Boot, and other emerging technologies... 
    Suggested

    Procyon TS

    O Fallon, MO
    3 days ago

  • Java Backend Developer

     ...Description Job Description Key Responsibilities: Design, develop, and maintain backend applications using Java 8 and the Spring...  ...-time streaming and pipelines). Solid understanding of REST APIs and Microservices. Experience with SQL and NoSQL databases.... 
    Suggested

    Jobs for Humanity

    O Fallon, MO
    1 day ago

  • Java Backend Developer

     ...Job Title: Java Backend Developer Location: O'Fallon, MO, USA Years of Experience: 7 to 10 Years Job Summary: We are seeking...  ...and streaming applications. Solid understanding of RESTful APIs and microservices architecture. Proficient in database technologies... 
    Suggested

    Yantran LLC

    O Fallon, MO
    3 days ago

  • Senior Java Full-Stack Developer

     ...Senior Java Full-Stack Developer Our client, a credit card company, is looking for a Senior...  ..., and MongoDB. Experience with web services (SOAP/RESTful), servers (WebSphere...  ...React front-end development REST/SOAP APIs and enterprise application development... 
    Suggested
    Work experience placement

    ICONMA

    O Fallon, MO
    4 days ago

  • Senior Full Stack Software Engineer

    $115k - $184k

     ...design, architecture, testing, and delivery. -Create RESTful APIs and integrations that connect data catalog tools with -enterprise...  ...business glossaries, search, enrichment, and bulk data uploads. -Develop services that retrieve, transform, store, and transfer data... 
    Suggested
    Full time
    Part time
    Worldwide
    Flexible hours

    MasterCard

    O Fallon, MO
    4 days ago

  • SharePoint Administrator

     ...Configure sites, libraries, lists, workflows, and web parts. • Monitor system...  ...with other Microsoft 365 services. • Develop and support solutions using SharePoint Framework...  ...Apps. • Support Microsoft Graph API and REST API integrations. •... 
    Suggested

    gpac

    O Fallon, MO
    1 day ago

  • Lead Full Stack Engineer

     ...experience with either some lead experience or multiple senior developer roles.Extensive experience as a full-stack Software Engineer or...  ...volumes, with strong knowledge of microservices architecture, RESTful API design, and integration patterns.Advanced SQL knowledge with... 
    Suggested
    Work at office
    3 days per week

    Veracity

    O Fallon, MO
    6 hours ago

  • Senior .Net Full-Stack Developer

    $63 - $90 per hour

     ...Partners is currently seeking a talented Senior .NET Full-Stack Developer. Do you have experience building large-scale distributed...  ...with Entity Framework, Dependency Injection, and cloud-hosted APIs. Experience with AWS services: Lambda, S3, SQS, SNS, Kafka, Step... 
    Suggested

    Technology Partners

    Chesterfield, MO
    4 days ago

  • Software Engineer (Backend/Java)

    $57 - $73 per hour

     ...supporting mission-critical backend systems. This role focuses on developing scalable microservices and orchestration solutions that power...  ...complex business processes and system integrations* Develop APIs and services that support customer transactions, eligibility validation... 
    Suggested

    KForce

    Maryland Heights, MO
    4 days ago

  • Senior UI/UX Engineer

    $107.9k - $195.05k

     ...for someone who is more than a front-end developer. You are passionate about how technology...  ...professional experience developing modern web-based user interfaces and user experiences...  ...developing or consuming RESTful APIs and integrating UI applications with backend... 
    Suggested
    Contract work
    Local area
    Immediate start

    Leidos

    Valley Park, MO
    5 days ago

  • Full Stack Java Developer

     ...reliability, and performance to deliver solutions that delight our customers. We're looking for talented software development engineers to develop advanced technologies and applications that are revolutionizing payments.Are you passionate about software engineering?Do you enjoy... 
    Suggested
    Work experience placement
    Flexible hours

    Samprasoft

    O Fallon, MO
    5 days ago

  • Full Stack Java Developer

     ...years of experience in Java IDE’s such as the Eclipse or Intellij IDEA.At least 4 years of experience in consuming and creating SOAP APIs, RESTful implementations.At least 4 years of experience in Micro-Services.Hands-on experience working on Angular 2 or aboveHands-on... 
    Suggested
    Night shift

    Software Technology Inc

    Maryland Heights, MO
    6 hours ago

  • Full-Stack Developer (Contract)

    $63 - $90 per hour

     ...Partners is currently seeking a talented Full-Stack Developer (Contract). Do you have experience modernizing legacy...  ...Backend Development: Strong .NET/C# experience with API development. Frontend Development: Modern web application development (Angular or similar... 
    Suggested
    Contract work

    Technology Partners

    Chesterfield, MO
    4 days ago

  • Java Developer

     ...program is part of Identity Solutions. Our mission is to develop identity verification and fraud prevention services to protect...  ...application platforms and deploy specifications, e.g., Web and application servers, API Gateways, Database Services, and Load balancersHas skills... 
    Relocation

    Samprasoft

    O Fallon, MO
    6 hours ago

  • Java Developer

     ...ZoomDuration: 12+ MonthsJob Description:Strong Java developer with very good understanding of micro...  ...systems.Solid understanding of modern API design and Restful principles.Fluent with...  ...implementation of large scale distributed systems and web services building complex software that is... 
    Work experience placement

    Argyle Infotech

    O Fallon, MO
    6 hours ago

  • Java Engineer

     ...technologies. This is a highly technical role ideal for senior developers or leads passionate about solving complex problems in a fast-paced...  ...applications and services. Create and manage RESTful APIs and microservices architectures. Collaborate with DevOps... 
    Full time
    Local area

    Veracity

    O Fallon, MO
    2 days ago

  • Java Developer

     ...Sr. Java DeveloperKey Skills and Experience:Strong hands on experience in Java(J2ee)Strong in webservices(microservices), Rest API's, Oracle DB knowledge, Cloud native(preferably AWS or Azure)Ability to drive end to end development, performance code reviews, build test... 

    Damco

    O Fallon, MO
    5 days ago

  • Java Developer

     ...React front-end development REST/SOAP APIs and enterprise application development...  ...Ability to leverage GenAI tools to improve developer productivity Apply AI-assisted...  ...PostgreSQL, and MongoDB. Experience with web services (SOAP/RESTful), servers (WebSphere... 
    Work experience placement

    Anveta

    O Fallon, MO
    4 days ago

  • java developer

     ...Java Developer Location: O’Fallon, MO – Day 1 Onsite – No Remote Duration: Long Term Passport copy mandatory to submit the profile...  ...in Java(J2ee) • Strong in webservices (microservices), Rest API’s, Oracle DB knowledge, Cloud native (preferably AWS or Azure)... 
    Remote work

    Argyle Infotech

    O Fallon, MO
    3 days ago

  • Backend Software Engineer

    $87.1k - $157.45k

     ...application used across the organization for analytics and reporting. You’ll help build and maintain core backend services, develop RESTful APIs, support data‑driven functionality, and contribute to ongoing system enhancements within a Linux‑based environment. Your work... 
    Local area
    Immediate start

    Leidos

    Valley Park, MO
    1 day ago

  • Senior Backend Software Engineer

    $126.65k - $171.35k

     ...Senior Backend Software Engineers. This role focuses on building prototypes and new capabilities for web applications and services. You will design APIs, develop data-processing and analytics pipelines, optimize SQL queries, and help establish production-ready... 
    Permanent employment
    Work experience placement
    Currently hiring
    Relocation
    Visa sponsorship
    Work visa
    Relocation package
    Flexible hours
    Shift work
    Day shift

    Boeing

    Berkeley, MO
    2 days ago

  • Senior Software Engineer - Java

    $115k - $184k

     ...requiring three days per week onsite.Role:Design, develop, test, deploy, and maintain scalable full-...  ...technologies.Design and implement RESTful APIs, microservices, and event-driven...  ....Experience developing modern, responsive web applications using React, Angular, TypeScript... 
    Full time
    Part time
    Worldwide
    Flexible hours
    3 days per week

    Dynamic Yield

    O Fallon, MO
    5 days ago

  • Senior Java Developer

     ...Role: - Senior Java Developer Location: - O'Fallon, MO Duration: - Long term Required Skills - Agile, API, Cloud, Cucumber, J2EE, Java, Junit, Microservices, Selenium...  ...Hibernate • Oracle, PL/SQL, JDBC • Web Services (JAX-WS and JAX-RS with RPC,... 
    Work experience placement

    Maintec Technologies

    O Fallon, MO
    1 day ago

  • Senior JAVA Engineer

     ...data structures, Data collections and system design problems Expected to develop new APIs and host new end points. Experienced in Distributed System development using Java/J2EE/Web Technologies. Proven track record in delivering highly available, scalable... 

    Argyll Infotech, Inc.

    O Fallon, MO
    3 days ago

  • Lead Full Stack Developer

     ...fraudsters across the globe? Interested in creating Thats the stuff! software for combating scammers?The Transaction Security team develops new products for Mastercard's fraud prevention platform. We protect cardholders / card issuers and aim to eradicate credit card... 

    Samprasoft

    O Fallon, MO
    6 hours ago

  • Backend Python Developer

     ...Bridgeton, MOResponsibilitiesLead the Design and Develop Backend Systems: Create and maintain...  ...ensuring high performance and scalability.API Development: Design and implement RESTful...  ...years of professional experience in backend web development of a commercial production... 
    Relocation

    United IT

    Bridgeton, MO
    6 hours ago

  • Java Lead

     ...Role - Java Lead Experience Required - 6+ Years Must Have Technical/Functional Skills Object-oriented Programming Web services & API standards (REST/OAuth/JSON) Programming & Scripting Languages (2 or more of Java, C++, Scala, JS, Python, Shell*)... 

    ClifyX

    O Fallon, MO
    4 days ago

  • Full-Stack Developer

    $40k - $60k

    Full-Stack Developer Location: Wentzville, MO — On-Site Job Type: Full-Time Salary: $40,000-...  .... Build and maintain backend services, APIs, and business logic using Node.js and NestJS...  ...building and maintaining production web applications, or equivalent experience demonstrating... 
    Full time
    Local area

    Midtown-Home-Improvements

    Wentzville, MO
    1 day ago