React jobs in O'Fallon, MO

Remote or Bentonville, Arkansas

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Today

Full Stack Developer (Java/React) Location: Remote Duration: Contract to Hire Overview The Team is seeking an experienced Full Stack Developer to support key promotional and digital commerce initiatives. This role requires a balanced blend of backend and frontend development expertise, with a primary focus on building scalable, high-performing applications using Java, Spring Boot, Microservices, Kafka, React, and Next.js. The ideal candidate will have experience developing enterprise-grade app

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Frontend Engineer (Angular / React.JS) - 100% REMOTE - Longterm Contract

Remote

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Today

We at NJ TECH INC are focused on hiring highly skilled professionals who are excited by the opportunity to make a true impact on their careers as well as on our clients' business. We power our clients success and drive our consultants career growth. We are seeking an experienced and outstanding Frontend Engineer (Angular / React.JS) for one of our esteemed clients. Role: Frontend Engineer (Angular / React.JS) Location: REMOTE Duration: Longterm Worked on a project originally built in Flask and

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Contract

$0 - $0

Senior Backend Engineer GoLang & Python

O'Fallon, Missouri

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Today

Key Responsibilities Build scalable, domain-driven microservices using GoLang and Python FastAPI, integrating backend APIs with mobile SDKs to establish a reliable orchestration layer Develop and maintain cloud-native backend services supporting payment orchestration and digital service integration Deploy and operate cloud-native services on AWS ECS, Fargate, and ARM64 architecture using AWS Graviton Provision and automate infrastructure using AWS CloudFormation and Terraform Build and inte

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Contract

DOE

Java full Stack Developer (Exp-10 Y) with React Exp-Full time-Remote

Remote

•

Yesterday

We are looking for an experienced Java Full Stack Developer with strong expertise in Java, Spring Boot, Microservices, and React.js to design, develop, and maintain scalable, high-performance enterprise applications. Key ResponsibilitiesDesign, develop, and maintain full-stack applications using Java, Spring Boot, and React.js. Build scalable RESTful APIs and Microservices. Develop responsive and reusable UI components using React.js, JavaScript/TypeScript, HTML5, and CSS3. Integrate front-end a

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Full-time

Depends on Experience

Senior Payment Solutions Architect – ReactJS, Node.js & Azure

Remote

•

Yesterday

We are seeking a Hands-On Payment Solutions Architect with strong experience in payment processing systems, including SNAP (Supplemental Nutrition Assistance Program), EBT (Electronic Benefits Transfer), and credit/debit card payments. The candidate must have strong technical expertise in ReactJS, Node.js, and Microsoft Azure, with the ability to design solutions and actively contribute to coding. Key Responsibilities & RequirementsPayment Architecture: Design and develop secure, scalable paymen

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Full-time

Depends on Experience

Python AI Developer With React JS Exp.

Remote

•

Today

Job Title Senior Python & AI Engineer (10+ Years Experience) Job Summary We are seeking an experienced Senior Python & AI Engineer with 5+ years of hands-on experience in building, deploying, and scaling AI/ML-driven solutions. The ideal candidate should have strong Python expertise, solid understanding of machine learning and AI concepts, and practical experience delivering production-grade systems in enterprise environments. Mandatory Technical skills: - Python, FastAPI , React, Key Responsib

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Contract, Third Party

Depends on Experience

Senior React & Node Developer

Remote

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11d ago

Are you a talented Senior Developer looking for a remote job that lets you show your skills and get decent compensation? Look no further than the marketplace that connects you with hand-picked startups in the US and Europe. What we offer: The rate depends on your seniority level, skills and experience. We've already paid out over $11M to our engineers.No more hunting for clients or negotiating rates let us handle the business side of things so you can focus on what you do best.We'll manually fi

Contract

75000 - 199000

React.js Developer - 100% remote - only w2

Remote

•

Today

Required Qualifications 7+ years of Full Stack software development experience.Strong backend development experience with: JavaSpring BootMicroservices ArchitectureREST APIsApache KafkaStrong frontend development experience with: ReactNext.jsJavaScriptTypeScriptExperience building and supporting enterprise-scale applications.Understanding of API integrations and distributed systems.Experience working within Agile development environments.Strong problem-solving, communication, and collaboration s

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Contract

Depends on Experience

Senior Software Engineer

Hybrid in O'Fallon, Missouri

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4d ago

Job role: Senior Software Engineer Location: O'Fallon, Missouri - hybrid - 3 days onsite. Travel Required. Duration: 6 months+ We're looking for engineers with experience in: Frontend: Angular and/or ReactBackend: Java and/or GolangCloud & Platform: AWS, Kubernetes, and cloud-native technologies. Project Details: Building a cloud-native payment orchestration platform that enables cardholders to seamlessly access our client's digital services directly through their banking applications via a sin

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Contract

Depends on Experience

AI Engineer (Vertex AI/.Net/React) -- W2 Profiles -- 100% Remote

Remote

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Today

Title:Senior Full Stack AI Engineer (Vertex AI/ .NET/ React) Location: 100% Remote Must Haves:Proven experience building and deploying fine-tuned LLMs in production environmentsHands-on experience with Google Vertex AI and Gemini modelsExperience performing supervised fine-tuning (SFT) using LoRA adaptersStrong expertise creating and validating JSONL training datasetsExperience building multi-source training data pipelines from structured and unstructured dataAbility to diagnose and resolve mod

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Contract

Depends on Experience

Backend Developer - Node JS/ TypeScript / React / AWS

Remote

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7d ago

Position: Senior Backend Developer Node.js / TypeScript / React / AWS Company : Yottaflex AI Technologies Location: Remote Employment Type: Contract Duration: 612 Months (Potential Extension) Job Description We are looking for a highly experienced Senior Full Stack Developer with strong hands-on Node.js and TypeScript backend development experience to design, develop, and deploy scalable enterprise applications. The ideal candidate must be backend-strong while also having solid experience with

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Contract, Third Party

Depends on Experience

Senior Full Stack AI Engineer (Vertex AI / .NET / React) -- 100% Remote --Only W2

Remote

•

Today

Role: Senior Full Stack AI Engineer (Vertex AI / .NET / React) Location: 100% Remote Must-Have SkillsProven experience building and deploying fine-tuned LLMs in production environments.Hands-on experience with Google Vertex AI and Gemini models.Experience performing Supervised Fine-Tuning (SFT) using LoRA adapters.Strong expertise in creating and validating JSONL training datasets.Experience building multi-source training data pipelines using structured and unstructured data.Ability to troubles

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Contract

Depends on Experience

Full Stack Engineer Java / React / Kafka

St. Louis, Missouri

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10d ago

Job Title: Full Stack Engineer Location: Onsite Duration: Long-Term Contract Job Type: ContractJob DescriptionWe are looking for an experienced Full Stack Engineer with strong hands-on experience in Java, Spring Boot, React, TypeScript, Kafka, and PostgreSQL to develop and enhance a modern Unified Workflow Engine platform. Required Skills7+ years of software development experience with strong Java expertise.3+ years of hands-on Java/Spring Boot development.Strong experience with Java 17/21 and S

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Third Party, Contract

Depends on Experience

Senior SAP Fiori / UI5 / React Developer

Remote

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Today

We are looking for a Senior SAP Fiori / UI5 / React Developer to deliver high-quality SAPUI5 and React-based apps with consistent SAP Fiori UX. You will build, deploy, and tune SAP Fiori applications, partnering with ABAP engineers on OData and RESTful APIs to ensure smooth integrations. Responsibilities Design and develop custom SAP Fiori applications using SAPUI5 while following SAP Fiori design guidelines Configure and deploy applications using SAP Business Application Studio (BAS) or VS Code

Full-time

SAP Fiori / UI5 / React Developer

Remote

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Today

We are seeking a skilled SAP Fiori / UI5 / React Developer to design, build, and optimize custom applications that deliver intuitive and consistent user experiences within the SAP ecosystem. Responsibilities Develop custom SAP Fiori applications using SAPUI5 and the SAP Fiori design guidelines Configure and deploy applications via SAP Business Application Studio (BAS) or VS Code Optimize application performance Participate in code reviews and uphold clean code standards Collaborate with ABAP dev

Full-time

React JS - Technology Lead

Remote or Minnetonka, Minnesota

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Today

Job title: Technology Lead Work Location: Minnetonka-MN-55343 Minimum years of experience: >6 years Would you require the candidates to meet you for in person interview? Not a mandate Is Skype/WebEx interview,OK? Yes Is this onsite/remote position: Hybrid If onsite, will you be considering relocation candidates: NA Job Description: Detailed Job Description Strong experience with React.js, JavaScript ES6, HTML5, and CSS3. Experience with state management libraries such as Redux, Context API, or Z

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Contract

Depends on Experience

Need Senior Solution Architect Clinical Systems Modernisation (.NET / AWS / React) - Remote

Remote

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17d ago

Job Title: Senior Solution Architect Clinical Systems Modernisation (.NET / AWS / React) Client: Pharma Client Location: 100% Remote (Client Based in San Francisco, CA) Duration: Long-Term Contract Need Healthcare/Pharma Domain exp Job Summary We are seeking a highly experienced Senior Solution Architect to lead the modernization of enterprise clinical and laboratory software platforms for a global pharmaceutical client. The ideal candidate will have strong expertise in .NET technologies, React,

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Contract

Depends on Experience

Senior Full Stack Developer React, Azure & Microsoft Fabric

Remote

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Today

Title: Senior Full Stack Developer React, Azure & Microsoft Fabric Duration: 8-9 Months Location: West Conshohocken, PA 19428 & Waltham, MA 02451 Remote opportunities with occasional clients sites visit. Role Summary Seeking an experienced Full Stack (React) Developer to build scalable, enterprise-grade interactive analytics applications using React, Microsoft Fabric, Power BI, and Azure. The role will focus on custom visualizations, embedding Power BI dashboards, and developing modern data-d

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Contract

Depends on Experience

Senior React Front-End Developer @ Chicago, IL; Raleigh, NC Locals preferred

Remote

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Today

Title: Senior React Front-End Developer Location: Chicago, IL; Raleigh, NC Locals preferred (Remote) Duration: 12 months Remote collaboration with proximity to an office strongly preferred; in-person availability as needed Job Description: We are seeking React front-end developers to help build a modern, AI-enabled single-page application for Bankers Almanac, a KYC and global correspondent banking product used by major financial institutions. This is a ground-up modernization effort, not a li

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Contract

50 - 60

Full Stack web Developer-React

Remote

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15d ago

Full Stack Web Developer (React) Overview We are seeking aFull Stack Web Developerto help build and enhance web applications that support data-driven workflows in a life sciences environment. This role focuses on developing user-facing applications and backend services that integrate data systems, APIs, and scientific tools. The ideal candidate thrives in afast-paced, execution-focused environmentand enjoys translating defined requirements into working software. You will work across the stack, b

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Contract

Depends on Experience

React jobs in O'Fallon, MO, USA