React.js jobs in Boulder, CO

Java Full Stack Developer - API, UI, React, Redshift, MST OR CST Time Zones

Remote

•

Today

Java Full Stack - API, UI, React Redshift Type: W2 With Benefits - No C2C Location: Remote - Working MST OR CST Time Zones Top 5 Technical Skills: Java, Spring Boot, API Developer, UI (React) Developer, Strong SQL, Redshift Full stack AWS (basic services) RDS, EC2, S3, Lambda, SNS, Redshift Top 3 Soft Skills: Strong Communications Working with Business Product Owners and Stakeholders Agile Job Description: API/UI Full Stack Developer UI Technologies are React API/Core/Backend Technologies are

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Full-time

Depends on Experience

Full Stack Java Developer - MST OR CST Time Zone, React, UI, Redshift, AWS

Remote

•

Today

Full Stack Java Developer - MST OR CST Time Zone No C2C or 1099 Must be Direct W2 - 100% Remote Must be in MST or CST ONLY Technical Skills: Java, Spring Boot, API Developer, UI (React) Developer, Strong SQL, Redshift Full stack AWS (basic services) RDS, EC2, S3, Lambda, SNS, Redshift Top 3 Soft Skills: Strong Communications Working with Business Product Owners and Stakeholders Agile Job Description: API/UI Full Stack Developer UI Technologies are React API/Core/Backend Technologies are Java, Sp

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Full-time

Depends on Experience

Full Stack Java Developer - API, React, UI, Redshift, MST OR CST Time Zones - ZL

Remote

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2d ago

Full Stack Java Developer - MST OR CST Time Zone No C2C or 1099 Must be Direct W2 - 100% Remote Must be in MST or CST ONLY Technical Skills: Java,Spring Boot,API Developer,UI (React) Developer,Strong SQL,RedshiftFull stackAWS (basic services) RDS, EC2, S3, Lambda, SNS, RedshiftTop 3 Soft Skills: Strong CommunicationsWorking with Business Product Owners and StakeholdersAgileJob Description: API/UI Full Stack Developer UI Technologies are React API/Core/Backend Technologies are Java, Springboot, R

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Full-time

Depends on Experience

Software Engineer

Louisville, Colorado

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Today

Location: Louisville, CO Salary: $100,000.00 USD Annually - $145,000.00 USD Annually Description: Role Overview Role_scope - seeking a Software Engineer with strong Rust expertise and hands-on embedded systems experience to support full-stack development across low-level device integration and higher-level application interfacesCross_stack_work - contributes to embedded Rust development, gateware-adjacent integration, system APIs, and occasional frontend toolingTeam_collaboration - works clos

Contract

USD 100,000.00 - 145,000.00 per year

Java Full Stack Developer - API, React, UI, Redshift, CST OR MST Time Zones - ZL

Remote

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2d ago

No C2C or 1099 Must be Direct W2 - 100% Remote Must be in MST or CST ONLY Technical Skills: Java,Spring Boot,API Developer,UI (React) Developer,Strong SQL,RedshiftFull stackAWS (basic services) RDS, EC2, S3, Lambda, SNS, RedshiftTop 3 Soft Skills: Strong CommunicationsWorking with Business Product Owners and StakeholdersAgileJob Description: API/UI Full Stack Developer UI Technologies are React API/Core/Backend Technologies are Java, Springboot, Redshift which is migrating that to Snowflake Stro

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Full-time

Depends on Experience

Full Stack Java Developer - React, UI, API, Redshift, AWS - ZL

Remote

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2d ago

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Full-time

Depends on Experience

Senior Full Stack Engineer | React + Node.js + AWS

Remote

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9d ago

Job Title: Full Stack Engineer Industry: Education / Digital Assessment Location: Remote (EST OR CST) Duration: 12 months+ Contract W2 Schedule: 9-5 EST Mode: long term contract (we extend work orders in bulk 2x year) Profile: Must have strong TypeScript and JavaScript (ES6) along with React development expertise. This role is for a full-stack engineer with solid backend experience using Node.js and AWS serverless technologies. Candidates should be comfortable building both frontend applicatio

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Contract

Remote Senior JavaScript/React Engineer

Remote

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4d ago

AboutUs: BasedinSanFrancisco,California,TuringistheworldsleadingresearchacceleratorforfrontierAIlabsandatrustedpartnerforglobalenterprisesdeployingadvancedAIsystems.Turingsupportscustomersintwoways:first,byacceleratingfrontierresearchwithhigh-qualitydata,advancedtrainingpipelines,plustopAIresearcherswhospecializeinsoftwareengineering,logicalreasoning,STEM,multilinguality,multimodality,andagents;andsecond,byapplyingthatexpertisetohelpenterprisestransformAIfromproofofconceptintoproprietaryintellig

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Contract

200 - 300

Full Stack Java Developers - React- API

Remote

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2d ago

No C2C or 1099 Must be Direct W2 - 100% Remote Must be in MST or CST ONLY Technical Skills: Java, Spring Boot, API Developer, UI (React) Developer, Strong SQL, Redshift Full stack AWS (basic services) RDS, EC2, S3, Lambda, SNS, Redshift Top 3 Soft Skills: Strong Communications Working with Business Product Owners and Stakeholders Agile Job Description: API/UI Full Stack Developer UI Technologies are React API/Core/Backend Technologies are Java, Springboot, Redshift which is migrating that to S

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Contract

Depends on Experience

Software Developer # 26-17938

Denver, Colorado

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30+d ago

Duration: 6+ Month JobResponsibilities Design and develop agentic AI solutions using LangChain, LangGraph, and A2A communication protocols Implement RAG (Retrieval-Augmented Generation) pipelines leveraging Azure AI Search and vector databases Build and orchestrate multi-agent workflows and intelligent automation systems Develop backend services using Java Spring Boot for integration, APIs, and enterprise workflows Create responsive front-end applications using React JS Integrate OpenAI / LLM m

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Contract

$55 - $62

Principal Architect - Node.js, TypeScript, React, experience using AI Agent tools || Remote || W2 & C2C

Remote

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2d ago

Job Description:We are seeking a Principal Architect with strong hands-on experience in Node.js, TypeScript, React, API architecture, and AI Agent technologies to lead architecture initiatives for an API Discovery, Inventory & Rationalization workstream. The ideal candidate will have deep expertise in modern application architecture, API ecosystems, enterprise integration, and AI-assisted engineering. This role will define architecture patterns and technical strategies for discovering, catalogin

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Third Party, Contract

60 - 65

Remote Frontend Engineer / React / WebGL / 3D

Remote

•

Today

A growing sports technology company is seeking a full-time WebGL Front End Developer to help build next-generation race tracking and analytics products. This position focuses on creating highly interactive visualization experiences using TypeScript, modern frontend frameworks, and advanced browser rendering technologies. Engineers will work on applications that process real-time telemetry and geospatial data, transforming complex information into intuitive user experiences for athletes and coach

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Contract

$60 - $70

Senior REACT JS Developer

Remote or Hybrid in Washington, District of Columbia

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2d ago

Role Description: The role will require you to design, develop and test using React JS technologies which will facilitate application development and implementation from development to QA to production. You will work to gain an understanding of the current system infrastructure, security needs, network considerations, methodologies. In this role, you will primarily focus on ReactJS programming, integrate designs and wireframes within the application code, write application interface code with J

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Contract, Third Party

Depends on Experience

Complex Ui React Developer (USC)

Remote

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4d ago

Position: Complex UI React Developer Location: Remote Job Overview We are seeking an experienced React Developer with strong expertise in building complex, scalable, and highly interactive user interfaces. The ideal candidate should have hands-on experience with React, Redux, WebSockets, and AI-powered applications, along with a strong portfolio demonstrating modern UI development. Key Responsibilities Design and develop complex, responsive, and reusable UI components using React.js.Build scalab

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Third Party, Contract

$60 - $70

Full Stack Developer (React, Nodejs)

Remote

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2d ago

Full Stack Developer (React, Nodejs) 6+ months+ 100% Remote Project: The project will be further backend work on the Async project, adding a new feature. The existing system allows a doctor to prescribe a drug, but does not allow the doctor to order lab tests. This new feature will support that ability. From a day-to-day perspective, it will be much the same as the current Async project, working to integrate some source APIs as well as supporting data for a front-end web experience. Looking for

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Contract

$60 - $65

Java with React (Only W2) Hybrid

Remote

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3d ago

Full stack Java with ReactJS Hybrid - requiring 2 days in-office at local office per week 5+ Months Contract Description: Skills & Experience Required 7+ years of software development experience Strong proficiency in Java, Spring, Spring Boot, Spring JPA, and REST APIs Strong experience with ReactJS and modern front-end development (HTML, CSS, JavaScript, TypeScript) Experience with RESTful API development, API gateways, and integration patterns Working knowledge of Kafka, Kubernetes, MuleS

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Contract

Depends on Experience

Staff Software Engineer - Python / React

Remote

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20d ago

The Staff Software Engineer will be a high-velocity full-stack builder for the new Product Engineering team, predominantly focused on delivering elite frontend interfaces while possessing the backend capability to ship end-to-end features. This is a 100% builder role meant for an engineer who excels at bridging complex data structures with resilient, highly secure user experiences. You will own the implementation of real-time UI components built predominantly using React. You will enforce a clea

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Full-time

140,000 - 160,000

Full Stack Developer (.NET / C# + React)

Remote

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4d ago

About the Role Our client, a company in the payments/fintech space, is seeking an experienced Full Stack Developer to join their engineering team. You'll build and maintain secure, high-throughput services on a modern .NET + Azure stack, working across the backend and the React front end. This is a fully remote, contract or direct-hire for candidates already based in the U.S and authorized to work. What You'll Do Design, build, and maintain backend services in C# / .NETDevelop responsive, user-f

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Full-time

$80

Senior REACT JS Developer (Remote)

Remote

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12d ago

Job Title:Senior REACT JS Developer (Remote) Location:Washington, DC Duration:12 Months Job Description: The client is looking for a Sr REACT JS. developer to design, develop and test using React JS technologies which will facilitate application development and implementation from development to QA to production for the client team.. The client Enterprise Application to leverage new digital technologies such as cloud computing, data analytics, artificial intelligence and mobile that are requir

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Contract

Depends on Experience

Lead Full stack Web Developer (Reactjs + Node.JS)

Remote

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3d ago

Title: Lead Full stack Web Developer (Reactjs + Node.JS) Location: Remote role in USA This role is open to candidates based in the United States and offers remote work flexibility, with availability required during Mountain Time business hours. As a hands-on technical leader, you will drive the architecture, design, and delivery of modern web applications for a fast-growing restaurant technology business, while actively coding, mentoring engineers, and partnering with cross-functional teams

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Third Party, Contract

$50 - $55

React.js jobs in Boulder, CO, USA