react.js Jobs in san francisco, ca

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Designer & Hobby Hacker

Whissle

Fremont, California, USA

Full-time

Job DescriptionAbout Whissle At Whissle, we conduct research and innovation in real-time signal processing and build practical applications that translate human-like voice and non-vocal cues to action. Our voice AI models, agents, and APIs power affordable, intelligent, and scalable agent-driven workflows from cars to smart homes to enterprise automation. We believe good design isn t just about pixels it s about intuitive, clever, and human-centered experiences across both physical and digital e

Senior Software Engineer - Monetization

Postman, Inc.

San Francisco, California, USA

Full-time

Who Are We? Postman is the world's leading API platform, used by more than 40 million developers and 500,000 organizations, including 98% of the Fortune 500. Postman is helping developers and professionals across the globe build the API-first world by simplifying each step of the API lifecycle and streamlining collaboration-enabling users to create better APIs, faster. The company is headquartered in San Francisco and has an office in Bangalore, where it was founded. Postman is privately held,

Microservices engineer- API / Security

HCL America Inc.

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

Software Engineer, Full Stack, Cell Software

Tesla Motors

Fremont, California, USA

Full-time

Tesla is re-thinking how batteries are made from the ground up. We're designing new factories, new equipment, new processes, and new software to rapidly scale battery manufacturing, globally. The primary bottleneck to Tesla's future expansion (and the transition to sustainable transport and energy storage) is our ability to produce and procure batteries - that's why we're innovating in-house, with our collection of world-class engineers, to redefine the industry. Software, data, and automation a

Designer (or designer who codes)

Rime Labs

Fremont, California, USA

Full-time

Job DescriptionJob description and application: https://app.dover.com/apply/Rime/4b6c6d55-a271-4bb5-975b-684d4accdb6e Job Title: Product Designer Designer Who Codes Location: Hybrid + Flexible (San Francisco, CA) Experience Level: Mid-Senior About UsAt Rime, we're redefining the boundaries of voice AI. Our mission is to empower developers to build voice applications that sound genuinely human capturing nuances like laughter, sighs, and accents. Our cutting-edge speech synthesis models, such as A

Microservices API engineer-

HCL America Inc.

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

Software Engineer - Wallet Core

BitGo

San Francisco, California, USA

Full-time

BitGo is the leading infrastructure provider of digital asset solutions, delivering custody, wallets, staking, trading, financing, and settlement services from regulated cold storage. Since our founding in 2013, we have focused on enabling our clients to securely navigate the digital asset space. With a global presence and multiple Trust companies, BitGo serves thousands of institutions, including many of the industry's top brands, exchanges, and platforms, and millions of retail investors world

Senior Software Engineer - Crypto as a Service

BitGo

San Francisco, California, USA

Full-time

BitGo is the leading infrastructure provider of digital asset solutions, delivering custody, wallets, staking, trading, financing, and settlement services from regulated cold storage. Since our founding in 2013, we have focused on enabling our clients to securely navigate the digital asset space. With a global presence and multiple Trust companies, BitGo serves thousands of institutions, including many of the industry's top brands, exchanges, and platforms, and millions of retail investors world

Principal Engineer

MRoads

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

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

Amiseq Inc.

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

Senior Engineering Manager, Frontend

DocuSign Inc

San Francisco, California, USA

Full-time

Company Overview Docusign brings agreements to life. Over 1.5 million customers and more than a billion people in over 180 countries use Docusign solutions to accelerate the process of doing business and simplify people's lives. With intelligent agreement management, Docusign unleashes business-critical data that is trapped inside of documents. Until now, these were disconnected from business systems of record, costing businesses time, money, and opportunity. Using Docusign's Intelligent Agreem

Java Full-stack Developer

Connvertex Technologies Inc.

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

Full Stack Developer with IAM

Dizer Corp

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

Principal Fullstack Software Engineer (TL), Ads Experience

Roblox

San Mateo, California, USA

Full-time

Every day, tens of millions of people come to Roblox to explore, create, play, learn, and connect with friends in 3D immersive digital experiences- all created by our global community of developers and creators. At Roblox, we're building the tools and platform that empower our community to bring any experience that they can imagine to life. Our vision is to reimagine the way people come together, from anywhere in the world, and on any device.We're on a mission to connect a billion people with op

Applications Engineer - Typescript

Luxor Technology Corporation

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

Senior Full Stack Engineer

Vaco by Highspring

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

Internship, Fullstack Engineer, Infrastructure Engineering (Fall 2025)

Tesla Motors

Fremont, California, USA

Full-time

Consider before submitting an application: This position is expected to start around September 2025 and continue through the Fall term (approximately December 2025) or into Spring 2026 if available and there is an opportunity to do so. We ask for a minimum of 12 weeks, full-time and on-site, for most internships. Our internship program is for students who are actively enrolled in an academic program. entry level candidates seeking employment after graduation and not returning to school should a

Senior Software Engineer, Cloud and Enterprise Agents

Cisco Systems, Inc.

San Francisco, California, USA

Full-time

Who We Are The name ThousandEyes was born from two big ideas: the power to see things not ordinarily possible and the ability to collect insights from a multitude of vantage points. As the world continues its digital transformation and relies more on cloud services and the Internet, the "network," which is now both public and private, has become a black box our customers cannot see or understand. Our Internet and cloud intelligence platform delivers the only collectively powered real-time view

Sr. Software Engineer - Full Stack

Visa Inc.

Foster City, California, USA

Full-time

Company Description Visa is a world leader in payments and technology, with over 259 billion payments transactions flowing safely between consumers, merchants, financial institutions, and government entities in more than 200 countries and territories each year. Our mission is to connect the world through the most innovative, convenient, reliable, and secure payments network, enabling individuals, businesses, and economies to thrive while driven by a common purpose - to uplift everyone, everywhe

Internship, Commercial UI Software Engineer, Energy Engineering (Fall 2025)

Tesla Motors

Palo Alto, California, USA

Full-time

Consider before submitting an application: This position is expected to start August/September 2025 and continue through the entire Fall term (i.e. through approx. December 2025) or into Winter/Spring 2026 if available. We ask for a minimum of 12 weeks, full-time and on-site, for most internships. International Students: If your work authorization is through CPT, please consult your school on your ability to work 40 hours per week before applying. You must be able to work 40 hours per week on-s