Senior React Developer jobs in San Francisco – Page 4 | RoboApply Jobs

Senior React Developer jobs in San Francisco· Page 4

Results 61–80 of 4,327 for “Senior React Developer” in San Francisco.

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Databricks logo
Full-time|$153K/yr - $210.4K/yr|On-site|San Francisco, California

Are you a dedicated Developer Advocate with a passion for bridging the gap between technology and the developer community? If you thrive on connecting with others, hosting engaging events, and diving into the nuances of application development and developer experience, we want to hear from you!As a Senior Developer Advocate at Databricks on the Neon DevRel t…

Feb 19, 2026
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3Y Health logo
Full-time|On-site|San Francisco Office

Join Our Mission at 3Y HealthAt 3Y Health, we are revolutionizing the healthcare industry with cutting-edge AI-driven software designed to alleviate the administrative burdens that consume a staggering 40% of healthcare revenue. Our comprehensive platform empowers clinician entrepreneurs, providing them with the tools needed to effectively launch, manage, and grow their private practices. By integrating advanced AI and automation, we enable healthcare providers to reclaim their time, enhance their business operations, and deliver superior outcomes for their communities. We are proud to have secured over $200 million in funding from prestigious investors such as Founders Fund, General Catalyst, Softbank, and 8VC.Your Role as a Frontend EngineerWe are on the lookout for a talented Frontend Engineer who is passionate about crafting intuitive, high-performance user interfaces that resonate with our providers. The ideal candidate will possess extensive knowledge in modern frontend development frameworks, particularly React and TypeScript, coupled with a keen eye for design and user interaction. You will thrive in an environment that values clean, modular code and collaboration with design and product teams to create elegant user experiences. Experience in a startup or as a founding engineer is a plus, showcasing a proactive approach to ownership, speed, and continuous improvement.In this dynamic role, you will influence frontend architecture decisions and work collaboratively across engineering, design, and product teams to enhance our AI-first platform's user experience.

Sep 2, 2025
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spellbrush logo
Full-time|On-site|San Francisco

Join Our Team as a Front-End Engineer:Are you passionate about anime and eager to create cutting-edge tools for the anime and video game industry? We are looking for a skilled Front-End Engineer to collaborate with our talented team at spellbrush. In this role, you will design and develop sophisticated front-end applications using React and TypeScript, ensuring that our user interfaces are responsive and engaging.Ideal Candidates Will:Embrace the Anime AestheticIf you're an anime enthusiast, you'll have the chance to explore innovative possibilities within the industry. Your love for the genre will drive your creativity as you contribute to our projects.Thrill in Building Complex Single-Page Applications (SPAs)Our applications are interaction-heavy and dynamic, resembling tools like Photoshop and Blender more than standard SaaS applications. A strong desire to explore canvas, WebGL, and possibly WebGPU will set you apart!Possess a Strong Design SenseLarge SPAs come with unique UI/UX challenges. We're in search of someone with a keen eye for design, capable of crafting tasteful UI layouts, seamless user experiences, and engaging microinteractions.Thrive in a Small, Agile Team EnvironmentWith a compact team of three dedicated frontend engineers, you will have the opportunity to work closely with some of the world's leading AI researchers, integrating advanced models into your stunning interfaces. We value the speed and efficiency of in-person collaboration, and we have offices in both Tokyo (downtown Akihabara) and San Francisco. Visa sponsorships are available.

Feb 7, 2024
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Crusoe logo
Full-time|Remote|San Francisco, CA - US

Join Crusoe as the Senior Director of Engineering, focusing on enhancing Developer Experience. In this pivotal role, you will lead a dynamic engineering team to innovate and improve our developer tools and platforms, ensuring seamless integration and exceptional user experience. You will collaborate closely with cross-functional teams to drive technical excellence and deliver outstanding solutions that empower developers. Your leadership will be integral to shaping our engineering culture and fostering a collaborative environment where creativity and problem-solving thrive.

Mar 7, 2026
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PM2CM, Inc. logo
Full-time|On-site|San Francisco, California, United States

At PM2CM, Inc. (Project Management to Construction Management), we pride ourselves on delivering high-quality Program and Project Management, Construction Management, and Project Controls services during the design and construction phases of various projects. Our expertise in Project Controls encompasses critical areas such as Scheduling, Cost Management, Document Management, Budget Monitoring, Estimating, Risk Analysis, Claims Avoidance, Change Management, and Earned Value Management.We invite you to become a part of our innovative team as a Senior Web Application Developer. In this role, you will be tasked with the design, development, and deployment of sophisticated web applications and GIS solutions that play a pivotal role in supporting operations for one of the largest school districts in the nation. Your contributions will drive high-impact projects that require expertise in modern UI design, complex data integration, and interactive spatial interfaces.This role not only provides the chance to work on meaningful public sector initiatives but also encourages collaboration with cross-functional teams and the development of your technical leadership skills.

Jun 28, 2025
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Unstructured logo
Full-time|Hybrid|San Francisco

Unstructured is at the forefront of transforming how businesses harness the potential of unstructured data, encompassing formats like PDFs, HTML, Word documents, emails, and more for AI/ML workflows. Our open-source library, a trusted resource for over 60,000 companies, has been downloaded more than 61 million times, including nearly half of the Fortune 500. With backing from prominent investors such as Menlo Ventures, Databricks Ventures, Bain Capital, and IBM Ventures, we are just beginning our journey.We are developing the ultimate platform for file transformation and data orchestration, empowering enterprises to seamlessly connect any data with any model, ensuring speed, precision, and scalability.About the RoleWe are thrilled to welcome a Senior Business Development Representative (BDR) to our rapidly expanding sales team based in San Francisco. This role involves collaborating closely with Account Executives to cultivate a robust sales pipeline by qualifying incoming leads and executing strategic outbound initiatives across a defined set of accounts.This position presents an excellent opportunity for an individual looking to fast-track their sales career while gaining insights into the AI and data infrastructure landscape. You will engage with engineering and data leaders, support real sales opportunities, and develop the necessary skills to evolve into a full-cycle sales role over time.Hybrid Schedule: Tuesday through Thursday in the San Francisco office, with flexibility on Mondays and Fridays.What You'll Do- Manage and follow up on inbound leads from webinars, events, campaigns, and website inquiries to convert initial interest into a qualified sales pipeline.- Collaborate with the Marketing team to ensure prompt and thoughtful follow-up on campaign-driven leads and provide insights that enhance lead quality and conversion.- Support Account Executives by strategically prospecting into over 20 target accounts, generating qualified meetings and opportunities.- Implement multi-channel outbound campaigns through email, LinkedIn, and phone to engage prospective clients and create a sales pipeline.- Foster relationships with technical and business stakeholders within engineering, data, and AI teams through personalized outreach and account-based engagement.

Apr 1, 2026
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360IT Professionals logo
Full-time|On-site|San Francisco

Join our dynamic team at 360IT Professionals as a Senior Android Developer and play a crucial role in designing and developing cutting-edge mobile applications. We are looking for an innovative and experienced professional who is passionate about technology and eager to contribute to exciting projects that impact our clients and users.

Aug 14, 2017
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Klaviyo logo
Full-time|On-site|San Francisco, CA

Join Klaviyo as a Senior Lead Software Engineer specializing in Developer Infrastructure. In this pivotal role, you will lead a team dedicated to enhancing our engineering practices and tools, ensuring our developers have the most efficient and effective environment to build exceptional products. You will collaborate closely with cross-functional teams to drive continuous improvement and innovation.

Mar 13, 2026
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Postman logo
Full-time|$220K/yr - $240K/yr|On-site|San Francisco, California, United States

Who We ArePostman is the premier API platform utilized by over 45 million developers and 500,000 organizations globally, including 98% of the Fortune 500. Our mission is to empower developers and professionals worldwide to create an API-first environment by simplifying every stage of the API lifecycle and enhancing collaboration, thereby enabling users to build superior APIs more swiftly.Headquartered in San Francisco, we also maintain offices in Boston, New York, Austin, Tokyo, London, and Bangalore—our city of origin. As a privately held company, we have secured investments from leading firms such as Battery Ventures, BOND, Coatue, CRV, Insight Partners, and Nexus Venture Partners. Discover more at postman.com or engage with us on X at @getpostman.P.S: We highly recommend exploring The "API-First World" graphic novel to gain insight into our broader vision at Postman.About the TeamThe Client Platform organization is dedicated to paving the way for building, testing, and deploying Postman’s web and desktop applications. We are responsible for frameworks, design systems, SDKs, build tools, and shared infrastructure that product engineers rely on daily. The UI Platform group is focused on developing reliable, accessible, and high-performance UI foundations that are used across Postman.The OpportunityAs a Senior Software Engineer on the Client Platform team, you will play a key role in shaping the front-end infrastructure that Postman depends on. This encompasses the design system and reusable components that enhance both web and desktop experiences. Your contributions will significantly impact how hundreds of engineers build, fostering consistency, performance, and an improved developer experience.This position involves hands-on work. You will create components, establish UI architecture, and collaborate with engineers and designers to transform concepts into scalable UI systems. In this role, you will advance the UX layer, enabling teams to deliver high-quality features without the need to reinvent core patterns.What You’ll DoEnhance front-end architecture, including component libraries, layout patterns, theming, and global UI behaviors.Develop specialized UI components as needed (e.g., editors, grids, structured data components) with a focus on performance and usability.Ensure components meet accessibility standards, keyboard interaction patterns, and internationalization/localization requirements.Assist product teams in embracing UI Platform components and patterns, offering guidance and identifying opportunities to simplify or expand the platform.

Feb 4, 2026
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BloKchain Talent logo
Full-time|$140K/yr - $200K/yr|On-site|San Francisco

Job Title: Senior Full Stack Developer - CryptographyLocation: San Francisco, CAExperience: 5+ yearsType: Full-TimeSponsorship: Available for H1B VisaSalary: $140K - $200K per yearOther Compensation: Equity OptionsRelocation: AvailableJob ID: T8065NAbout BloKchain Talent: As a premier blockchain recruiting agency, we are on the lookout for a Senior Full Stack Developer to join our client, a pioneering startup that has developed one of the world’s fastest blockchain solutions, currently handling 120K Transactions Per Second (TPS) with plans to scale beyond 1 Million TPS. This is your chance to contribute to a transformative product that will redefine the landscape of alternative stablecoins.In this role, you will be instrumental in ensuring the products align with design specifications and user experiences. You will collaborate with product managers and play a critical role in shaping the product vision while adhering to high-quality standards.

Mar 26, 2019
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Sustainable Talent logo
Contract|On-site|San Francisco, Ca

Location: San Francisco, Bay Area, CAEmployment Type: ContractAbout UsSustainable Talent specializes in providing adaptable workforce solutions, linking elite talent with prominent global enterprises. We collaborate with some of the world's most innovative companies to assist them in expanding their teams with the right expertise. This role is with one of our esteemed high-tech clients, a frontrunner in AI technology and digital transformation, dedicated to leveraging advanced data science and machine learning to address complex issues.About the RoleWe are looking for a Senior Python Developer who will be responsible for developing and optimizing applications that facilitate machine learning and data science projects. You will focus on constructing scalable data pipelines, deploying AI models, and ensuring optimal performance and efficiency in production settings. Close collaboration with data scientists and cross-functional teams will be essential for transitioning research into practical solutions. If you are enthusiastic about AI, cloud technologies, and writing clean, efficient code, this is an exceptional opportunity to engage in groundbreaking innovation.What You’ll DoDevelop and optimize Python-based applications that support data science and machine learning initiatives.Implement and deploy machine learning models utilizing TensorFlow, PyTorch, and Scikit-learn.Design and construct scalable data pipelines to preprocess and transform large datasets for AI/ML applications.Collaborate closely with data scientists to convert research into production-ready ML solutions.Develop predictive analytics and deep learning solutions to enhance business intelligence and decision-making.Ensure model performance optimization and scalability in production environments.Integrate ML models into cloud-based platforms (AWS, GCP, Azure) and microservices architectures.Write clean, efficient, and well-documented Python code adhering to software engineering best practices.Collaborate with cross-functional teams to drive innovation and improve AI-driven products.What We’re Looking For7+ years of software engineering experience with a strong focus on Python development.Proven expertise in machine learning frameworks such as TensorFlow, PyTorch, and Scikit-learn.Experience in developing scalable data pipelines and cloud-based architectures.Strong problem-solving skills and ability to work in a collaborative environment.Excellent communication skills and a passion for AI technologies.

Feb 23, 2026
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Datadog logo
Full-time|$240K/yr - $284K/yr|Hybrid|New York, New York, USA; San Francisco, California, USA

Datadog is on the lookout for an enthusiastic and experienced Senior Corporate Development Lead to spearhead our AI product strategy. This role involves developing strong connections within the founder and venture capital ecosystem while actively driving significant initiatives such as acquisitions, venture investments, and startup collaborations.Joining our small, high-impact team that reports directly to Datadog’s Founder and CEO, you will thrive in a dynamic and technically challenging environment. Your passion for AI and developer tools will be key, as you will evaluate and source promising AI startups, work closely with our product and engineering teams, and help position Datadog as the go-to partner for the next wave of innovative founders.This position is perfect for someone eager to take on more responsibility, who operates with integrity and creativity, and prioritizes the company’s objectives. At Datadog, we value our office culture—the relationships and collaboration it fosters, and the creativity it inspires. We embrace a hybrid work environment to help our Datadogs maintain a work-life balance that suits their needs.

Feb 13, 2026
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Cloudflare, Inc. logo
Full-time|On-site|In-Office

Join Cloudflare as a Senior Software Engineer in our Network Development team, where you will design and implement innovative network solutions that enhance our global infrastructure. This role offers the opportunity to work with cutting-edge technologies and collaborate with talented engineers to drive significant improvements in network performance and reliability.

Mar 10, 2026
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Decagon logo
Full-time|On-site|San Francisco

Join Decagon as a Senior Software Engineer specializing in Agent Development. In this pivotal role, you will be responsible for designing, implementing, and optimizing software solutions that enhance our agent systems. You will collaborate with cross-functional teams to drive innovative projects, ensuring the highest quality and performance of our applications.

Feb 25, 2026
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Lunar logo
Full-time|On-site|San Francisco

About Us:At Lunar, we are at the forefront of healthcare innovation, developing a groundbreaking software platform that aims to transform health systems. Our mission is to redefine healthcare delivery through advanced AI-powered solutions that enable hospitals to provide exceptional care to their patients. Our platform serves as the backbone of modern health systems, streamlining both clinical and operational workflows with the world’s pioneering AI-native hospital information system.This state-of-the-art platform represents a comprehensive overhaul of the information infrastructure that underpins healthcare services. From physicians and nurses to lab technicians and patients, Lunar’s software integrates and empowers every aspect of healthcare delivery. We view our mission as revolutionary, akin to a moon landing in the healthcare sector—an ambitious endeavor that many deem unattainable.Supported by leading venture capital firms from Silicon Valley, we champion a small, high-performing team of experts committed to operating at their highest potential. We seek individuals who are motivated, inquisitive, demonstrate sound judgment, and are dedicated to producing exceptional work throughout their careers.Our infrastructure is built on Elixir, chosen for its robustness, concurrency, and scalability—critical for managing real-time patient data in high-stakes environments such as Emergency Departments, ICUs, and Operating Rooms.We are in search of a Senior Product Engineer who is eager to confront some of the most challenging technical obstacles in healthcare, joining a nimble, driven, and mission-focused team. If you are passionate about crafting clean, reliable code and wish to redefine the software infrastructure of contemporary hospitals, we invite you to connect with us.Here are some challenging technical issues you may encounter in your first 6 months:Design a modern cloud architecture from the ground up: With no legacy systems to complicate matters, we are developing a cloud-native platform centered around Elixir.Create an improved access control system for clinical data: Develop a modern access control framework featuring fine-grained permissions that respects the structure of clinical data and patient data ownership while facilitating population-level insights for enhanced public health.Ensure hospitals remain operational around the clock: Design and implement infrastructure capable of handling rolling deployments and failover strategies to maintain uptime.

Mar 12, 2026
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Astro-Mechanica logo
Full-time|On-site|San Francisco

Astro-Mechanica is seeking a Senior Propulsion Development Engineer in San Francisco. This position centers on developing advanced propulsion systems for aerospace applications. Role overview The Senior Propulsion Development Engineer leads projects focused on new propulsion technologies. Work involves collaborating with teams from different disciplines to move designs from concept to implementation. The role requires hands-on involvement in both technical development and project leadership. Key responsibilities Guide the design and development of propulsion systems for aerospace use Lead and coordinate engineering projects with cross-functional teams Apply advanced technologies to meet evolving industry requirements Location This role is based in San Francisco.

Apr 29, 2026
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wordware.ai logo
Full-time|On-site|San Francisco

Important NoticeThis is a full-time, in-person position located in San Francisco (Presidio). We operate from our office five days a week.Candidates must be based in the Bay Area or willing to relocate prior to employment.We require authorization to work in the US, but we are open to O-1 visa sponsorship for outstanding candidates.Your RoleYou will take charge of the frontend aspect of Sauna, delivering interfaces that are seamless, user-friendly, and refined, even when the underlying processes are intricate.You will independently make product and design decisions, rapidly prototype, and implement solutions without being constrained by exhaustive specifications. You may sometimes work from existing designs or create new ones.Technology StackKey technologies include TypeScript, React, Next.js, Y.js, TipTap, and Cloudflare Workers.Who You AreMinimum Qualifications4+ years of experience in frontend engineering with a portfolio that impresses the founders. Show us complex and polished interfaces you've developed.Proficient in TypeScript and React — you are knowledgeable about reconciliation, optimizing renders, and understanding browser behavior.Strong product sense and design intuition — you can interpret a rough product vision, draft user interactions, and create solutions that resonate. You notice when transitions are slightly too slow or when user affordances are ambiguous.Decisive in design — you will need to take ownership of certain UX choices, produce simple designs when necessary, and find paths to overcome obstacles.Autonomous and humble — you do not wait for permission or perfect guidelines. You implement, gather feedback, and improve.Detail-oriented — you care about aspects like loading states, empty states, error messages, and keyboard shortcuts. The myriad small details that enhance software quality matter to you.Preferred Qualifications (not mandatory)Experience with Y.js, Automerge, or CRDTs for real-time collaboration.Familiarity with rich text editors (ProseMirror, TipTap, Slate).Developed interfaces for LLM-based tools (handling streaming responses, uncertainty management, progressive disclosure, etc.).

Nov 3, 2025
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Vizcom logo
Full-time|$195K/yr - $225K/yr|On-site|San Francisco

Agency Notice: We are not collaborating with recruiting agencies for this position. Please refrain from contacting Vizcom employees regarding this role. Any unsolicited resumes will not be acknowledged.Why Join Vizcom?At Vizcom, we are on a mission to revolutionize design by simplifying the journey from concept to creation, transforming impactful ideas into tangible realities.Backed by significant funding (Series B with $51 million raised to date), we are experiencing robust month-over-month growth and are actively expanding our core engineering team in San Francisco. Our scope is vast: real-time collaboration, GPU inference at scale, utilizing a modern TypeScript stack, and addressing real enterprise needs.The RoleAs a Senior Product Engineer, you will be responsible for key product components in Vizcom’s real-time design environment, including our canvas rendering engine and collaborative UX systems. Your expertise in React, WebGL, and GraphQL will be essential in enhancing performance, interaction design, and developer experience. You will work closely with designers, AI engineers, and backend leaders to ensure that Vizcom’s interface is not only visually stunning but also exceptionally fast. In your first 90 days, you will: deliver a new or re-architected user-facing feature that enhances product performance or fidelity, establish a render or collaboration performance baseline (including metrics like frame rate, latency, and bundle size), contribute to frontend technology direction (such as render pipeline abstraction and UI state modeling), and eliminate one persistent performance or UX issue across the frontend stack.Compensation$195,000 - $225,000 annually + Equity OpportunitiesYour ResponsibilitiesCreate Engaging Interactive Features: Develop functionalities that integrate design, collaboration, and 3D visualization.Enhance Performance: Optimize React and WebGL rendering to ensure instantaneous responsiveness under load.Design Developer Ergonomics: Develop component architecture, hooks, and state models that scale effectively.Collaborate with Design Teams: Rapidly prototype, test user experiences, and bring high-fidelity UX to fruition.Boost Observability: Implement and analyze performance metrics (FPS, React profiler, network traces).Mentor Colleagues: Review code for clarity, structure, and long-term maintainability.

Dec 4, 2025
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CoreWeave logo
Full-time|$165K/yr - $242K/yr|On-site|San Francisco, CA

CoreWeave is The Essential Cloud for AI™. Designed by pioneers for pioneers, we provide a robust platform of technology, tools, and teams that empower innovators to develop and scale AI solutions with confidence. Trusted by leading AI laboratories, startups, and global enterprises, CoreWeave merges exceptional infrastructure performance with profound technical expertise to hasten breakthroughs and convert computational power into tangible capabilities. Established in 2017, CoreWeave became a publicly traded entity (Nasdaq: CRWV) in March 2025. Explore more at www.coreweave.com.About Marimo: At Marimo, our mission is to create the world's premier open-source programming environment for data, along with a world-class, scalable, and high-performance cloud-hosted version. Marimo is a revolutionary take on the Python notebook—it feels like a next-gen reactive notebook, yet it is stored as pure Python, allowing version control with Git, deployment as a data application, execution as a script, and reuse as a module. Initially incubated with scientists at Stanford, Marimo is now utilized by top companies, research labs, and universities globally, with millions of downloads and over 17,000 stars on our GitHub repository.At Marimo, we believe that the tools we use influence our thoughts—better tools foster better minds. If you are enthusiastic about developer tools, excel in ambiguous situations, enjoy tackling challenging engineering issues at scale, and are eager to engage in groundbreaking projects, you will thrive with us.

Mar 20, 2026
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DoorDash, Inc. logo
Full-time|On-site|San Francisco, CA; New York, NY; Chicago, IL; Los Angeles, CA; Atlanta, GA

Role overview DoorDash seeks a Senior Business Development Lead to drive growth in the Consumer Packaged Goods (CPG) sector. This position is open in San Francisco, New York, Chicago, Los Angeles, and Atlanta. The role centers on expanding DoorDash's footprint within the CPG market through a mix of strategy, partnership, and cross-functional teamwork. What you will do Shape and implement business strategies to increase DoorDash's impact in the CPG space Spot new revenue streams and partnership opportunities within the CPG sector Develop practical plans that support key business objectives Collaborate with teams across the company to achieve shared goals Establish and nurture strong relationships with CPG partners What makes this role unique This senior-level position carries real influence on DoorDash's direction in the CPG market. The role blends strategic planning and partnership building with hands-on collaboration across multiple teams, offering the chance to shape both business outcomes and partner relationships.

Apr 27, 2026

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