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- ...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.Solid understanding of event-driven architecture concepts.Extensive...Suggested
E-Solutions
O Fallon, MO1 day ago - ...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, MO18 hours ago - ...a credit card company, is looking for a Senior Java Full-Stack Developer for their O'Fallon, MO/Hybrid location.Responsibilities:Develop... ...Spring, HibernateAngular/React front-end developmentREST/SOAP APIs and enterprise application developmentCloud-Native Architecture...SuggestedWork experience placement
ICONMA
O Fallon, MO1 day ago - ...experience with either some lead experience or multiple senior developer roles. ~ Extensive experience as a full-stack Software Engineer... ..., with strong knowledge of microservices architecture, RESTful API design, and integration patterns. ~ Advanced SQL knowledge...SuggestedHourly payH1bWork at officeRelocation3 days per week
Veracity
O Fallon, MO1 day ago $122k - $207k
...best practices across the organization. Platform Automation & Developer Experience • Own the enterprise GitOps strategy leveraging... ...knowledge of Kubernetes networking, ingress architectures, Gateway API, and traffic management. • Expertise with Infrastructure-as-Code...SuggestedFull timePart timeWorldwideFlexible hoursMastercard
O Fallon, MO16 days ago- ...Comfortable enough in handling algorithms, 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...Suggested
Argyll Infotech, Inc.
O Fallon, MO4 days ago - ...'Scale @ Speed' as our guiding principle. Title- Full Stack Developer Location- St. Louis, MO Mode of Interview- (L1 -Video and... ...opportunities. Technologies: - Java, J2EE, micro services, RESTful APIs, Angular, Web Services, JavaScript, Docker Framework -...Suggested
Yantran LLC
O Fallon, MO3 days ago - ...enough code and collaborate on the desired functionalityUnderstands use cases for advanced design patterns (e.g., service-to-worker, MVC, API gateway, intercepting filter, dependency injection, lazy loading, all from the gang of four) to implement efficient codeUnderstands...SuggestedContract workLocal area
ShiftCode Analytics
O Fallon, MO1 day ago - ...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...Suggested
Damco
O Fallon, MO1 day ago - ...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...SuggestedFull timeLocal area
Veracity
O Fallon, MO3 days ago $92k - $147k
...,000 - 147,000 per year Requirements: ~### ~ Proficient in developing and writing test scripts for front-end applications using the Angular... ...patterns for implementing diverse business processes (e.g., APIs, event-driven services, batch services, web applications, big...SuggestedFull timePart timeMastercard
O Fallon, MO8 days ago$200k - $330k
...platform engineering strategy across CI/CD, cloud infrastructure, developer platforms, container ecosystems, infrastructure automation, and... ...practices, code quality, testing, performance engineering, API architectures, and microservices design. • Promote engineering...SuggestedFull timePart timeWorldwideFlexible hoursMastercard
O Fallon, MO9 days ago$115k - $184k
...O'Fallon, MO, requiring three days per week onsite.Role:Design, develop, test, deploy, and maintain scalable full-stack applications supporting... ..., or similar technologies.Design and implement RESTful APIs, microservices, and event-driven integrations to enable scalable...SuggestedFull timePart timeFlexible hours3 days per weekMasterCard
O Fallon, MO1 day ago$96k - $163k
...recurring payment information current throughout the issuer-cardholder relationship. In this role, you will apply your experience in API performance testing, automation, scripting, data setup, AI-assisted script generation, bottleneck discovery, performance tuning, and...SuggestedFull timePart timeWorldwideFlexible hoursMastercard
O Fallon, MO18 hours ago$140k - $231k
...software engineering experience. ~3+ years leading large-scale distributed system initiatives. ~ Expert-level Java, Spring Boot, REST APIs, microservices architecture, and distributed systems expertise. Strong software architecture and software design leadership...SuggestedFull timePart timeWorldwideFlexible hoursMasterCard
O Fallon, MO2 days ago- ...first software delivery ecosystem and delivering a world class developer experience. We are seeking a Lead Software Engineer to design... ...Define high- and low-level design artifacts, including APIs, data models, system interactions, and component boundaries...Full timePart timeWorldwideFlexible hours
Dynamic Yield
O Fallon, MO4 days ago - ...dependencies. All About You: Successfully designed and developed externally facing web applications utilizing modern single page... .... Successfully designed and developed cloud ready REST APIs utilizing industry best practices. Deep understanding of Cloud...H1bLocal areaRelocation
Samprasoft
O Fallon, MO18 hours ago - ...methodologies (Gtest, JUnit, BlazeMeter, mocking, etc.) - Experienced in building platforms with Microservice architecture and RESTful APIs. - Experience using cloud-native approaches running on Linux, leveraging Spring Boot - Exposure to symmetric cryptography...
w3r Consulting
O Fallon, MO1 day ago - ...Sr. Software Engineer We are seeking a skilled Software Developer with a strong background in Java, Spring Boot, Microservices, and... ...methodologies and DevOps practices. Familiarity with RESTful APIs and web services. Understanding of database technologies (SQL...
Echo IT Solutions
O Fallon, MO4 days ago - ...skills? Data engineer/SDET # Knowledge of Microservices and scaling techniques # Experience using web service APIs # Ability to create good acceptance and integration test automation scripts and integrate with Continuous integration (Jenkins/...
3B Staffing LLC
O Fallon, MO4 days ago - ...that can code and build high quality secure front end and REST API/backend that is modular, functional, and testable. Contribute... ...object-oriented development and design patterns. Full stack developer with ability to write secure code in backend and frontend...
Vets Hired
O Fallon, MO18 hours ago - ...Hibernate Angular/React front-end development REST/SOAP APIs and enterprise application development 2. Cloud-Native Architecture... ...Engineering Ability to leverage GenAI tools to improve developer productivity Apply AI-assisted coding, testing,...Work experience placement3 days per week
RIT Solutions, Inc.
O Fallon, MO4 days ago - ...Selenium/Webdriver ¿ Experience in testing Web services, SOAP UI Pro, APIs (REST/SOAP) ¿ Experience in Mobile application testing &... ...Integration and Delivery, Tools such as Jenkins/Bamboo/Chef) ¿ Develops/monitors quality gating and automation strategy for a given project...
Procyon TS
O Fallon, MO4 days ago - ...with speed and agility as part of a small team. This will involve developing high-performing, highly scalable software solutions and... ...workflows and pipelines, and apply standardized pipelines via APIs to achieve CI and CD using industry standard tools (e.g., Jenkins...Full timeContract workPart timeWork experience placementWorldwideFlexible hours
Dynamic Yield
O Fallon, MO4 days ago - ...with technology staff including Quality Engineers, Operations, Developers, Devops Engineers, Product management, and Program management to... ...covering all key practice areas including mobile, web, and API testing. Drive adoption of development services (Quality Engineering...Work experience placement
Samprasoft
O Fallon, MO18 hours ago - ...Required Experience: You have experience building applications using Java and PCF You have extensive experience with Java APIs Some experience with web technologies, including HTML, Javascript and front-end frameworks such as Angular Optimizing applications...
Yantran LLC
O Fallon, MO2 days ago $92k - $147k
...possibilities for all. The Fraud Products team (part of O&T) is developing new capabilities for MasterCard's Decision Management Platform,... ...applications. • Build and enhance features, services, and APIs that support Mastercard's fraud prevention and payment...Full timePart timeWorldwideFlexible hoursMasterCard
O Fallon, MO1 day ago- ...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*) Spring,...
ClifyX
O Fallon, MO18 hours ago - ...Top Priority Requirements Strong expertise in Java, APIs, Angular, and React Experience building Agentic Frameworks utilizing... ...administration, and enhancement of a Qlik Sense environment while helping develop next-generation Agentic products and data solutions. Key...Temporary work
Delan Associates, Inc
O Fallon, MOa month ago $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...
