React.js Jobs in California

181 - 200 of 976 Jobs

Crypto Researcher (US Timezone) - RemoteJob Title - Crypto Researcher (US Timezone) - Remote

Ashford BenjaminCompany Name - Ashford Benjamin

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Anaheim, California, USA

Full-time

Job DescriptionOur client, a rapidly growing crypto hedge fund and proprietary trading firm with consistent 200%+ annualized returns generated with a 4+ Sharpe ratio, are seeking researchers for their real-time information flows team. This role aims to capitalize on the opportunity to react to market-moving events. Experience: Background in extracting alpha from market-moving events.Insight: Familiarity with valuable sources, individuals, and topics to track.Responsibilities Brainstorming and Cr

Frontend Software Engineer - SE3Job Title - Frontend Software Engineer - SE3

eBay Inc.Company Name - eBay Inc.

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Remote or Portland, Oregon, USA

Full-time

At eBay, we're more than a global ecommerce leader - we're changing the way the world shops and sells. Our platform empowers millions of buyers and sellers in more than 190 markets around the world. We're committed to pushing boundaries and leaving our mark as we reinvent the future of ecommerce for enthusiasts. Our customers are our compass, authenticity thrives, bold ideas are welcome, and everyone can bring their unique selves to work - every day. We're in this together, sustaining the futur

Lead AI Data ScientistJob Title - Lead AI Data Scientist

Arch Systems, LLCCompany Name - Arch Systems, LLC

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Remote

Full-time

Role: Lead AI Data Scientist Company: Arch Systems Client: Federal Engineering Agentic Intelligence Across Federal Missions Location: Remote / Hybrid Type: Full-time | Contract | W2 or 1099 Level: Senior / Principal Note: Prior experience working with a U.S. Federal agency is mandatory. Candidates without this experience will not be considered. About the Role Arch Systems is seeking a Lead AI Data Scientist to serve as both a technical architect and delivery leader across its growing po

DevOps EngineerJob Title - DevOps Engineer

Kforce Technology StaffingCompany Name - Kforce Technology Staffing

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Remote or Atlanta, Georgia, USA

Contract

RESPONSIBILITIES: Kforce has a client seeking a remote DevOps Engineer to join their team. This company has a new specific project to migrate all CI from the current Concourse/TeamCity/Jenkins implementation to GitHub Actions Paved Road. Summary: The DevOps Engineer will be converting the existing pipelines for teams that don't have the bandwidth or knowledge to do it themselves. They will leverage guides written by the DevTools team to accomplish this task. The DevOps Engineer will also support

Information Security Analyst 3Job Title - Information Security Analyst 3

Judge Group, Inc.Company Name - Judge Group, Inc.

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San Francisco, California, USA

Contract

Location: San Francisco, CA Salary: $45.00 USD Hourly - $53.00 USD Hourly Description: Our client is currently seeking a Information Security Analyst - IAM IAM Risk Triage - Information Security Analyst 3 Job Description Summary: Information Security Analysis: Covers jobs within the IT environment focusing on examining and testing security controls and assessing how business functions engage and interact with technology to tailor initiatives to react to technological trends while exceedin

Senior Frontend Engineer - Discovery UXJob Title - Senior Frontend Engineer - Discovery UX

RobloxCompany Name - Roblox

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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

Fullstack LeadJob Title - Fullstack Lead

CalfusCompany Name - Calfus

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Pleasanton, California, USA

Full-time

About Calfus At Calfus, we are known for delivering cutting-edge AI agents and products that transform businesses in ways previously unimaginable. We empower companies to harness the full potential of AI, unlocking opportunities they never imagined possible before the AI era. Our software engineering teams are highly valued by customers, whether start-ups or established enterprises, because we consistently deliver solutions that drive revenue growth. Our ERP solution teams have successfully impl

Sr Fullstack Engineer Software Engineer - OS - OTA - Node - React NativeJob Title - Sr Fullstack Engineer Software Engineer - OS - OTA - Node - React Native

Motion Recruitment Partners, LLCCompany Name - Motion Recruitment Partners, LLC

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Irvine, California, USA

Full-time

This position is onsite, 5 days a week, in West Los Angeles. We are building out a next-generation operating system for televisions. A smart responsive AI platform that transform TV to an active assistant. We are looking for a Fullstack engineer with experience with React, Node, Typescript, Python. Experience with OTA(over the air) and AI is a big plus This is a startup. Candidates should be prepared to have the startup grind and hustle mentality. Required Skills & Experience 5+ years of soft

Sr Fullstack Engineer Software Engineer - OS - OTA - Node - Los AngelesJob Title - Sr Fullstack Engineer Software Engineer - OS - OTA - Node - Los Angeles

Motion Recruitment Partners, LLCCompany Name - Motion Recruitment Partners, LLC

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Los Angeles, California, USA

Full-time

Senior Software Engineer // Remote // Node.js // 7+ yearsJob Title - Senior Software Engineer // Remote // Node.js // 7+ years

Motion Recruitment Partners, LLCCompany Name - Motion Recruitment Partners, LLC

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Remote or New York, New York, USA

Full-time

Senior Software Engineer (Remote - Canada) ? Compensation: $170k-$210k USD / $160k-$180k CAD + Equity ? Location: Remote (Canada only) A mission-driven team is seeking a Senior Software Engineer to help scale the core infrastructure of a fast-growing visual collaboration platform used by scientists and researchers. This is a full-time role focused on backend-heavy full-stack development, reliability, and scalability. You'll work cross-functionally with product, design, and data to ship high-im

SAP FPSL (Financial Products Sub-Ledger) consulting positions (Functional/Technical)Job Title - SAP FPSL (Financial Products Sub-Ledger) consulting positions (Functional/Technical)

Innovative Consulting Solutions, LLCCompany Name - Innovative Consulting Solutions, LLC

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Remote

Contract

Position: SAP FPSL (Financial Products Sub-Ledger) consulting positions (Functional/Technical) Location: Remote Duration: Long Term This position is required to work on a critical Upgrade project. Experience with SAP FPSL configuration, customization, and standardization: Gather business requirements, assist in design and development efforts. Advanced understanding of SAP Financial modules: FPSL or Bank Analyzer, Group Reporting, BPC, etc. Must have developer experience in SAP BW (experience in

Design EngineerJob Title - Design Engineer

Fundamental Research LabsCompany Name - Fundamental Research Labs

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Menlo Park, California, USA

Full-time

Job DescriptionFundamental Research Labs About The Role Fundamental Research Labs is looking for a Design Engineer to bridge the gap between design and engineering. In this role, you ll help shape our design system implementation, architect front-end solutions, and ensure seamless user experiences across our products. You'll play a foundational role in shaping how we communicate our vision to build digital humans. What You'll Do Architect and implement complex UI components and systems that bala

Software Engineer II - App StudioJob Title - Software Engineer II - App Studio

RipplingCompany Name - Rippling

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San Francisco, California, USA

Full-time

About Rippling Rippling gives businesses one place to run HR, IT, and Finance. It brings together all of the workforce systems that are normally scattered across a company, like payroll, expenses, benefits, and computers. For the first time ever, you can manage and automate every part of the employee lifecycle in a single system. Take onboarding, for example. With Rippling, you can hire a new employee anywhere in the world and set up their payroll, corporate card, computer, benefits, and even

Senior Engineering Manager, Ads & Brand Experiences (Full Stack)Job Title - Senior Engineering Manager, Ads & Brand Experiences (Full Stack)

RobloxCompany Name - Roblox

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San Mateo, California, USA

Full-time

Associate Software Engineer - December 2025 GradsJob Title - Associate Software Engineer - December 2025 Grads

Veeva SystemsCompany Name - Veeva Systems

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Pleasanton, California, USA

Full-time

Veeva Systems is a mission-driven organization and pioneer in industry cloud, helping life sciences companies bring therapies to patients faster. As one of the fastest-growing SaaS companies in history, we surpassed $2B in revenue in our last fiscal year with extensive growth potential ahead. At the heart of Veeva are our values: Do the Right Thing, Customer Success, Employee Success, and Speed. We're not just any public company - we made history in 2021 by becoming a public benefit corporation

Staff Product Designer, Data ToolsJob Title - Staff Product Designer, Data Tools

PholioCompany Name - Pholio

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Sonoma, California, USA

Full-time

Job DescriptionStaff Product Designer, Data Tools We re looking for a Staff UX Designer to lead design on a new data product. This role blends product design, data visualization, and systems thinking. You ll work closely with PMs, engineers, and data scientists to ship production-grade dashboards and analytics tools that help professionals make better decisions, faster. If you re energized by complex systems, early-stage builds, and clear data storytelling, this could be a great fit. WHAT YOU'LL