React.js Jobs in California

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Ruby on Rails Architect - Remote

Nava Software Solutions

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Remote or Jersey City, New Jersey, USA

Third Party, Contract

NAVA Software solutions is looking for a Ruby on Rails Architect Details: Ruby on Rails Architect Location: 100% Remote Duration: 6-12 months Job Description: As a hands-on architect, primary responsibilities center around design and development of web based, real-time and batch applications Collaborate with members of the design team both technical as well as business owners to identify requirements and design new products or extensions to existing products. Produce application prototypes wi
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Posted 1 day ago | Updated 3 hours ago

Full Stack Developer (W2 Only)

Apidel Technologies

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Remote or Philadelphia, Pennsylvania, USA

Contract

Team Info: Team of 3 engineers. Building Content Management services for internal projects. Working on highly scaled applications. There is a separate team that works on application building and the whole infrastructure. This team is for building self-service tools. Must have skills: Looking for 5 to 8 years of Full-stack developer 60% UI and 40% Backend role. UI They are using React but are fine with any other JavaScript experience Backend - Java OR Kotlin OR any JVM-based Testing & Deployment
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Posted 60+ days ago | Updated 25 days ago

Fullstack Architect

Photon

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Remote

Full-time, Third Party

We are seeking a visionary and hands-on Fullstack Architect with deep expertise in Java, React.js, and application/web architecture to lead the design and development of scalable, secure, and high-performance solutions. This role involves owning the full stack technology direction, mentoring development teams, and ensuring architectural alignment with business goals. Key Responsibilities:Design and oversee the architecture of fullstack solutions (backend, frontend, web, and app platforms).Define
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Posted 9 days ago | Updated 8 days ago

PHP Developer - Sunnyvale, CA (Hybrid)

R Systems, Inc.

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Sunnyvale, California, USA

Contract

About R Systems: R Systems is a leading digital product engineering company that designs and develops chip-to-cloud software products, platforms, and digital experiences that empower its clients to achieve higher revenues and operational efficiency. Our product mindset and engineering capabilities in Cloud, Data, AI, and CX enable us to serve key players in the high-tech industry, including ISVs, SaaS, and Internet companies, as well as product companies in telecom, media, finance, manufacturing
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Posted 1 day ago | Updated 4 hours ago

Lead Nodejs Developer with Microservices Architecture and Migration Experience

E-Solutions, Inc.

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California, USA

Third Party

Title: Lead Nodejs Developer with MIcroservices Architecture and Migration Experience Location: Remote Duration: Long term Contract JD: 60 - 70% - Backend is needed we need basically a backend guy with some experience in frontend. React is frontend. having it is a plus. -> Typescript(Most important) -> NestJS(Preferred) or Express JS or Sails.Js or loopback.js -> NodeJS in Backend -> Must have SQL DB integrations with node backend -> Knowledge on ORM -> Micro-services Architecture (Most pe
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Posted 14 days ago | Updated 6 hours ago

Microservices engineer- API / Security

HCL America Inc.

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Remote

Full-time

We are HCLTech, one of the fastest-growing large tech companies in the world and home to 218,000 people across 60 countries, supercharging progress through industry-leading capabilities centered around Digital, Engineering and Cloud. ( ) The driving force behind that work, our people, are diverse, creative, and passionate, raising the bar for excellence on a regular basis. We, in turn, work hard to bring out the best in them as we strive to help them find their spark and become the best version
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Posted 11 days ago

Microservices API engineer-

HCL America Inc.

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Remote

Full-time

We are HCLTech, one of the fastest-growing large tech companies in the world and home to 218,000 people across 60 countries, supercharging progress through industry-leading capabilities centered around Digital, Engineering and Cloud. ( ) The driving force behind that work, our people, are diverse, creative, and passionate, raising the bar for excellence on a regular basis. We, in turn, work hard to bring out the best in them as we strive to help them find their spark and become the best version
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Posted 21 days ago

Fullstack Lead

Learn Beyond Consulting LLC

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San Ramon, California, USA

Contract

Role: Fullstack Lead Location: San Ramon, CA(Onsite) Experience 15+ Retail Client Experience is mandatory For this position, candidate should have knowledge/experience in Front end also as the customer dev team is more front end heavy. For the person to be successful in the lead role they need to have a good backend skills also like API development, GraphQL Need to have exceptional communication skills NOTE: Please follow the below guidelines while submitting profiles Job Description: Excell
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Posted 7 days ago | Updated 3 hours ago

Principal Engineer

MRoads

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Remote

Contract

Bethesda-Chevy Chase, MD / Remote We are seeking a highly experienced Principal Engineer / Fullstack Architect with deep expertise in Node.js, GraphQL, and ReactJS, combined with a strong background in Artificial Intelligence, particularly in building and integrating Large Language Models (LLMs). You will play a pivotal role in architecting scalable, intelligent fullstack solutions, driving innovation, and mentoring engineering teams on cutting-edge AI integration. Key Responsibilities: Lead the
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Posted 21 days ago

Sr. Front End Developer - UI/UX focus - W2

Amiseq Inc.

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Remote

Contract

Job Description: Job Description: As a Senior Frontend Developer with UI/UX focus, you will drive frontend architecture and user experience for a high-impact business application. You'll play a crucial role in frontend foundations, UI/UX optimization, and performance enhancement for a sophisticated web platform. Your responsibilities include managing build systems, component libraries, and implementing user interface improvements that directly impact business operations. You'll collaborate with
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Posted 15 days ago

Java Full-stack Developer

Connvertex Technologies Inc.

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Remote or Salt Lake City, Utah, USA

Full-time, Contract

Experience Level: 6-8 Years (10 openings) Job Summary: We are seeking a skilled Java Developer with a strong background in backend development and a solid understanding of frontend technologies. The role will focus approximately 60% on backend services and 40% on frontend UI development. You will work closely with cross-functional teams to build scalable, high-performing applications. Key Responsibilities: Backend (60%): Design, develop, and maintain robust, scalable backend services using Jav
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Posted 26 days ago | Updated 23 hours ago

Senior Full Stack Engineer

Vaco by Highspring

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Remote

Contract

THIS ROLE IS NOT AVAILABLE FOR C2C, VISA SPONSORSHIP, or THIR PARTY VENDORS We are seeking a highly skilled Senior Full Stack Engineer to join our clients growing development team. In this role, you will help design, build, and maintain scalable, secure, and user-friendly web applications that support our nationwide emergency response and AED program management platforms. This role requires expertise in Ruby on Rails, React (2+ years), and frontend UI development using ANT Design. Youll collabor
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Posted 1 day ago

Full Stack Developer with IAM

Dizer Corp

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Remote

Contract

Title : Full Stack Developer with IAM Location : Remote Description Develop, test, and deploy full-stack applications using React and Node.js.Implement and maintain IAM solutions to ensure secure authentication and authorization mechanisms.Strong experience with React and Node.js development.Solid understanding and hands-on experience with Identity Access Management (IAM) concepts and tools.Must have built applications with Authentication and authorization focus.Proficient in API integration an
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Posted 10 days ago

Applications Engineer - Typescript

Luxor Technology Corporation

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Remote

Full-time

Company Background The Luxor team has built a range of solutions for Bitcoin mining and compute power, including a globally distributed mining pool, firmware, an ASIC brokerage desk, a data website and a Hashrate derivatives market. Our product suite is growing rapidly and as such we are looking to expand our product team. We fundamentally believe compute is going to be the world s most important commodity, and are building the infrastructure to support this new market. Role Overview This is a f
Posted 16 days ago | Updated 12 days ago

: Senior Staff Software Engineer

Vaco by Highspring

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Remote

Full-time

Job Title:Senior Staff Software Engineer Location:100% Remote Employment Type:Direct Hire Compensation:$140,000 - $175,000 Base + 10%-15% Bonus Benefits:401K Matching, Full Benefits & PTO ImportantNote: No third-party companies - direct applicants only. Sponsorship is not available now or in the future. Job Summary We seek aSenior Staff Software Engineerwith strong AWS cloud engineering expertise to lead and mentor a high-performing software development team. This role is an even split between t
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Posted 22 days ago

Full Stack Backend Software Engineer

Critical River, Inc.

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Pleasanton, California, USA

Full-time

Title: Full Stack Backend Software Engineer Location: Pleasanton, CA (Hybrid) Duration: Fulltime with CR Years of Experience: 10+ Years Skill Set: Python with FastAPI on AWS Lambda Level: Senior - Level Brief Description We are seeking an experienced Full Stack Backend Software Engineer with a strong foundation in Python with FastApi on AWS, ReactJS & AWS. The ideal candidate will have 5 to 8 years of experience in software development and will be responsible for building, maintaining, and o
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Posted 5 days ago | Updated 5 hours ago

Junior Software Engineer - 100% Remote

Prodware Solutions

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Remote

Contract

Job Title: Software Engineer-Jr.Duration: 3+ Months ContractJob Type: 100% Remote Job Description: 1. What technologies or systems will this contingent worker be utilizing? AWSPythonJavareact/typescriptSome mainframe
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Posted 8 days ago | Updated 5 days ago

Front End Developer

Caspex Corporation

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Sunnyvale, California, USA

Third Party, Contract

Position : Front End Developer & Architect Location : Sunnyvale, CA Responsibilities: Proficiency in writing scalable modern JavaScript based web applications.Need Strong experience with React , TypeScript and GraphQLExpert level knowledge of JavaScript and CSS.Experience with web application frameworks such as React, node.js, angular, backbone or ember.Strong fundamentals in OO, Functional js, client-side MVC and CSS pre-processing frameworks.Familiarity with the whole web stack, including prot
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Posted 43 days ago | Updated 6 days ago

UI Engineer (Bilingual Japanese)

E-Solutions, Inc.

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San Francisco, California, USA

Contract

Role : UI Engineer (Bilingual Japanese) Location : Bay Area, CA Job Description : We are looking for a skilled UI Engineer proficient in React and JavaScript to design and develop modern, responsive web applications. The ideal candidate will have hands-on experience with both frameworks and a strong understanding of front-end development principles. Bilingual in English & Japanese language. Key Responsibilities: Develop and maintain user interfaces using React, Angular, and JavaScript. Build
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Posted 29 days ago | Updated 6 hours ago

Software Engineer - Core Java

Ledgent Technology

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San Jose, California, USA

Full-time

Title: Software Engineer - Java Location: San Jose, CA Type: Direct Hire | Hybrid (2-3 days/week) Position Overview: We are looking for a Software Engineer - Java to join our team and contribute to building and maintaining a fault-tolerant, scalable, and distributed enterprise software system. The ideal candidate will excel in writing clean, efficient, and secure code while enhancing the reliability and performance of our core systems. Responsibilities: * Design, develop, and maintain enterpri
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Posted 11 days ago | Updated 3 hours ago