Lead Staff Frontend Engineer jobs in San Francisco – Browse 6,110 openings on RoboApply Jobs

Lead Staff Frontend Engineer jobs in San Francisco

Open roles matching “Lead Staff Frontend Engineer” with location signals for San Francisco. 6,110 active listings on RoboApply Jobs.

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companyWeave logo
Full-time|$200K/yr - $250K/yr|On-site|San Francisco Bay Area, CA

Why Weave ExistsAt Weave, we are revolutionizing the way therapeutic knowledge is captured, transformed, and communicated throughout the drug development process. Our mission is to empower human experts with cutting-edge AI tools, ensuring drugs reach patients swiftly, safely, and cost-effectively.The Weave Platform optimizes regulatory workflows from inception to completion, seamlessly integrating AI into every phase. Collaborating with our clients, Weave is crafting the ultimate AI toolkit for the entire therapeutic lifecycle.Your Role & MissionWe are in search of a Lead Staff Frontend Engineer to spearhead the technical direction of our frontend platform. This high-impact role involves defining the architecture, establishing engineering standards, and constructing the foundational systems upon which the engineering team will build. You will balance hands-on technical work, cross-team collaboration, and elevating our software development practices.In this role, you will identify key technical challenges, foster alignment on solutions, and ensure our architectural decisions support scalable growth. We prioritize creating simple, well-tested, and reliable systems over pursuing the latest frameworks.What You'll OwnTechnical Leadership & ArchitectureDefine and refine the frontend architecture for our platform, weighing immediate velocity against long-term maintainability.Establish engineering standards, design patterns, and best practices throughout the frontend codebase.Drive the technical strategy and roadmap for frontend infrastructure, architecture, developer tooling, and experience.Be the go-to technical decision-maker for high-stakes, ambiguous problems, documenting your rationale.Foundational SystemsDesign and build the core systems that product engineers rely on: component libraries, shared abstractions, performance infrastructure, and testing frameworks.Oversee the architecture of our document editor experience, including real-time collaboration, conflict resolution, and extensibility.Enhance frontend build, deployment, and observability tools to maintain team speed and confidence.Cross-Team ImpactCollaborate with Product, Design, and backend engineering to formulate technical solutions for complex product challenges.Mentor and guide junior engineers, fostering a culture of knowledge-sharing and continuous improvement.

Apr 2, 2026
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companyApiphany logo
Full-time|$150K/yr - $300K/yr|On-site|San Francisco

About ApiphanyApiphany stands at the forefront of foundational AI technology for physical product development. Our mission is to empower innovators in industries such as automotive, aerospace, medtech, and energy to convert vast amounts of unstructured technical data into real-time, actionable insights. Supported by prominent investors from Markforged, Databricks, GM, and Character, we are dedicated to changing the landscape of engineering decision-making, transforming complexity into clarity for the world's leading manufacturers.Our sophisticated models are tailored to address the intricacies of engineering and manufacturing, comprehending principles of physics, design specifications, and program constraints. We are a tight-knit team of elite builders from top universities including Stanford, Berkeley, MIT, UW, and CMU, alongside industry leaders from GM, Ford, and Genesis Therapeutics. Our passion lies in revolutionizing hard-tech and collaboratively establishing a category-defining enterprise.About the RoleAs a Senior / Staff Frontend Engineer at Apiphany, you will play a crucial role in designing, building, and enhancing our state-of-the-art web application. You will be tasked with implementing high-quality UI components, developing the next generation of data visualization, ensuring optimal performance, and upholding best practices in frontend development.Your contributions will also include shaping the long-term frontend strategy, mentoring team members, and establishing engineering practices that will support the company's growth. You will work closely with design, backend, and machine learning engineers to transform massive data streams into intuitive and actionable insights for users, ensuring a seamless experience.

Oct 23, 2025
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companyMindlance logo
Full-time|On-site|San Francisco

Join Mindlance as a Lead Frontend Engineer and take the next step in your career by leading innovative frontend development projects. We are looking for a creative and driven individual who excels in building user-friendly interfaces and enjoys collaborating with cross-functional teams. You will be responsible for designing and implementing high-quality web applications, optimizing performance, and ensuring a seamless user experience.

Mar 21, 2017
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company
Full-time|On-site|San Francisco

The Role:Join us as a dynamic Frontend Tech Lead at f2-ai, where you'll take the helm in crafting our cutting-edge, AI-driven enterprise UI platform. This is a unique opportunity for an innovative engineer who enjoys building robust systems from the ground up and is eager to influence our technical direction while writing production-level code.Key Responsibilities:UI System Development: Design and implement foundational frontend features, actively coding and delivering essential React/TypeScript components.Frontend Architecture Leadership: Shape the technical vision and roadmap for our React-based UI platform, ensuring swift iterations and effective scaling of user experiences.Performance, Security, and Accessibility: Create high-performance, responsive interfaces that comply with SOC 2 and accessibility standards, emphasizing maintainability and cost-effectiveness.AI Integration: Collaborate with the team to incorporate intelligent features, data visualizations, and interactive tools that reveal AI-driven insights.Engineering Excellence: Establish and maintain coding standards, component libraries, and review processes; mentor fellow engineers to cultivate a culture of reliable, test-driven development.Collaborative Partnerships: Work closely with product, design, backend teams, and enterprise clients to translate requirements into elegant UI solutions.Qualifications:Proven Technical Leadership: 7+ years of experience in building and scaling mission-critical frontend systems using TypeScript and React, with a demonstrated capability to architect solutions from scratch.API Design Proficiency: Extensive experience in designing and utilizing RESTful and GraphQL APIs, including state management and effective data-fetching techniques.Results-Oriented Mindset: You excel in environments where you take ownership of features from start to finish, iterate quickly, and deliver production-ready UI solutions.Familiarity with Styling Solutions: Experience with CSS-in-JS methodologies (e.g., Styled Components, Emotion) or utility-first frameworks like Tailwind.

Sep 15, 2025
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company
Full-time|On-site|San Francisco

About Ivo Inc. Ivo Inc. builds AI-powered tools for legal teams. The engineering group has launched projects such as: An AI agent that integrates with MS Word to improve document editing (2023) Shifting from traditional embedding models to agentic Retrieval-Augmented Generation (RAG) (2023) Applying large-scale language models for legal fact extraction (2024) Developing a legal assistant for searching extensive contract databases (2024) Clustering legal documents by lineage (2025) Automating deviation analysis to reveal hidden risks in contract databases (2025) Linking contracts and amendments to create composite timelines for clients (2025) Role Overview: Staff Software Engineer - Frontend This role shapes the user interface and overall experience for Ivo's AI-native legal platform. The Staff Frontend Engineer focuses on building fast, collaborative, and intuitive web applications that connect directly with LLM-powered agents. What You Will Do Develop a real-time, collaborative interface enhanced by AI features Write performant and maintainable frontend code Build components that interact with large language model agents Work closely with designers and legal professionals to improve the product for legal teams Our Mission Most businesses depend on in-house legal teams, where lawyers often face overwhelming workloads and tight deadlines. Historically, few tools have existed to help them. Ivo’s platform uses large language models to automate repetitive legal work, aiming to restore work-life balance for legal professionals. The company maintains an 85% trial win rate, even in a competitive market. The team is committed to making a real difference in the legal field. Location San Francisco

Apr 14, 2026
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company
Full-time|On-site|San Francisco, CA

About Cogent SecurityCogent Security is an innovative Applied AI Lab dedicated to developing the next generation of AI agents for cybersecurity. As cyber threats evolve, so do our defenses. Our 'AI Taskforce' analyzes vast amounts of enterprise data to proactively address potential breaches before they can escalate.To maintain our edge, we integrate pioneering research with practical implementation. In addition to our core product initiatives, Cogent Research acts as our applied AI laboratory, fueling our ability to create truly intelligent security workflows.Since our launch, Cogent has rapidly expanded, collaborating with Fortune 500 companies to secure some of the world's most intricate production environments.Supported by Greylock, we've assembled a team of exceptional talent in applied AI, including individuals from:Renowned universities such as Stanford, Berkeley, Penn, Duke, Carnegie Mellon, and WaterlooHigh-growth companies including Scale AI, Databricks, Stripe, Tesla, and CoinbaseLeading cybersecurity experts from Wiz, Abnormal AI, and ZscalerPrestigious research institutions like DeepMind and SAILAbout the RoleIn the role of Senior Frontend Engineer, you will take ownership of the frontend platform and user experience, empowering customers to visualize, understand, and act upon complex security data with assurance.This position is classified as Staff+ level; you will have previously operated as a Staff, Senior Staff, or Principal Frontend Engineer and will be eager to define the technical pathway for a new platform. Your responsibilities will include designing frontend infrastructure, developing 'golden' component libraries, and enhancing the platform’s AI capabilities, all while delivering customer-facing features.You will balance in-depth architectural design with hands-on development, ensuring our frontend stack is both sophisticated and robust as we scale. Over time, you will play a key role in mentoring junior frontend engineers, laying the groundwork for a strong team based on the foundations you establish.

Sep 30, 2025
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companyZyphra logo
Full-time|On-site|San Francisco

Zyphra is a cutting-edge artificial intelligence company located in the heart of San Francisco, California.About the Position:As our Lead Frontend Engineer - Agentic Interfaces, you will spearhead the design and development of the user-facing elements of our agentic systems. Your expertise will shape the way users engage with AI technology across various platforms, including desktop applications and web browsers. You will collaborate closely with engineers, machine learning researchers, and backend teams to create user experiences that are not only functional but also intuitively accessible.Your Responsibilities Include:Crafting and developing user interfaces for both browser and desktop applicationsCreating and maintaining comprehensive component libraries and styling systemsAnalyzing user interactions and refining user flows based on feedback and usage dataPrototyping and implementing UI features in conjunction with machine learning and backend teamsSimplifying the complexities of AI products to ensure they are accessible and empowering for a diverse user baseQualifications:Proficient in frontend technologies, with a strong command of HTML, CSS, and JavaScript/TypeScriptHands-on experience with modern frameworks, particularly ReactA keen eye for UI detail and usability, maintaining a user-centric approachAbility to rapidly prototype and iterate designs using tools like FigmaExperience in designing responsive, accessible, and high-performance user interfacesStrong understanding of human-computer interaction principles, accessibility, and visual designExcellent communication and collaboration skills to work effectively with engineers, designers, and researchersPreferred Qualifications:Experience in designing or developing browser extensions or desktop applications (e.g., Electron, Tauri)Familiarity with mobile platforms and responsive design is a plusPrior involvement in products featuring complex workflows, automation, or agentic behaviorsInterest or experience in backend development, APIs, or AI systems

Jul 1, 2025
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companyGiga logo
Full-time|On-site|San Francisco

Join us on-site in San Francisco's vibrant Dogpatch neighborhood as a Staff Frontend Infrastructure Engineer.About GigaAt Giga, we are at an exciting juncture, having successfully raised a $61M Series A and established our presence with several paying clients, including industry leader DoorDash. Our mission is to revolutionize customer experience through real-time AI agents that comprehend emotions, resolve issues instantaneously, and scale across the largest enterprises globally.We are on a trajectory to become the premier AI platform for enterprise automation, bolstered by our cutting-edge voice superintelligence. To reach this ambitious goal, we are eager to expand our team with talented engineers like you.Our engineers have the autonomy to make a significant impact, affecting millions of users daily. This role offers a unique opportunity to work alongside brilliant founders, contribute to a commercially successful venture, and help shape a generational company.For more insights into our journey:Voice AI startup Giga raises $61M Series ADoorDash and Giga PartnershipGiga empowers top B2C companies, including DoorDash, to streamline their complex support and operations across voice, chat, and email. If you find this vision compelling, we invite you to apply!The RoleWe are searching for a Frontend Infrastructure Engineer tasked with developing the tools and systems that enhance the productivity of our frontend engineers. Your primary audience will be our internal engineering teams, as you create design systems, developer tooling, and foundational abstractions that will be utilized across the team.This role is distinct from product engineering; instead of delivering customer-facing features, you will focus on frontend API design, code quality infrastructure, and building reusable components that prioritize ease of use and efficiency. If you have experience in a design systems team, frontend platform team, or developer experience team within a larger organization, this role will resonate with you.What You'll Work OnHere are some examples of projects you may undertake:Design System: Develop and manage a component library featuring clean APIs, consistent patterns, and exceptional documentation.

Feb 8, 2026
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companyKiddom logo
Full-time|On-site|San Francisco

About KiddomKiddom is an innovative educational platform committed to fostering student equity and growth by integrating high-quality instructional materials with engaging digital learning experiences. Our platform offers exceptional curriculum management capabilities, empowering schools and districts to take charge of their educational content. This results in tailored learning experiences that cater to the unique needs and aspirations of local communities. With detailed insights into teacher and leader performance, Kiddom drives continuous improvement in instructional strategies, school/district programs, and professional development.At Kiddom, we are passionate about revolutionizing education through state-of-the-art technology. Our mission is to create a comprehensive platform that equips educators and learners with advanced tools and data-driven insights. We are seeking a skilled Lead Software Engineer specializing in Frontend development to join our team and spearhead the design and implementation of scalable, frontend-centric solutions.As the Lead Software Engineer - Frontend, you will be pivotal in architecting and delivering full-stack product features with a focus on frontend architecture. Your responsibilities will include defining, building, and optimizing product features and addressing complex challenges at scale. You will collaborate with senior engineers to select optimal tools and technologies while implementing robust, production-ready software solutions.

Feb 20, 2025
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companyAirwallex logo
Full-time|On-site|US - San Francisco

Join Airwallex as a Staff Frontend Engineer, AIAt Airwallex, we are redefining the financial landscape for global businesses, offering a unified payments and financial platform that empowers over 200,000 companies worldwide, including renowned brands like Brex, Rippling, and Qantas. Our proprietary infrastructure and innovative software solutions facilitate everything from business accounts to treasury management, enabling seamless embedded finance on a global scale.Founded in Melbourne, our diverse and dynamic team of over 2,000 talented individuals spans 26 offices globally. With a valuation of $8 billion and support from industry-leading investors such as T. Rowe Price and Visa, Airwallex is at the forefront of revolutionizing global banking. If you’re eager to make a significant impact in your career, we invite you to join us.Attributes We ValueWe seek innovative builders with a founder-like spirit who are driven by the desire to create real impact, experience rapid growth, and take ownership. You will bring your expertise and analytical mindset to our mission and operating principles. Your ability to act swiftly while exercising sound judgment, coupled with your curiosity and problem-solving skills, will be essential in navigating complex challenges.As a humble collaborator, you will transform innovative ideas into tangible products and ensure projects are completed efficiently. Leveraging AI, you will enhance productivity and expedite solutions. Here, you will engage with challenging, high-profile projects alongside exceptional colleagues while advancing your career as we shape the future of global finance. If this resonates with you, let’s create what’s next together.About the TeamOur elite team is focused on developing cutting-edge AI solutions that eliminate financial busywork for startups around the world. By delivering intelligent automation across various financial processes, we enable founders to concentrate on scaling their businesses instead of managing intricate financial tasks.We utilize state-of-the-art AI tools, from prompt engineering to fine-tuned models, ensuring the optimal approach for each challenge. By aligning with real-world founder pain points, we take ownership of customer outcomes and drive rapid development.The team is small, highly skilled, and dedicated to innovation, led by experienced operators who have successfully launched AI products at scale. You will have the opportunity to tackle significant technical challenges with a high degree of autonomy and a direct impact on our customers.

Sep 26, 2025
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companyHarvey logo
Full-Time|On-site|San Francisco

Why Join Harvey?At Harvey, we are revolutionizing the landscape of legal and professional services — not just incrementally, but through a comprehensive transformation. By harnessing cutting-edge agentic AI, a robust enterprise platform, and profound industry expertise, we are redefining how critical knowledge work is performed for generations to come.This is an exceptional opportunity to contribute to the creation of a transformative company at a pivotal moment. With over 1,000 customers across 58 countries, a solid product-market fit, and outstanding investor backing, we are rapidly scaling and pioneering a new category in real-time. The challenges are ambitious, the standards are high, and the potential for personal, professional, and financial growth is unparalleled.Our team consists of talented, driven, and passionate individuals dedicated to our mission. We work swiftly, with intensity, and take genuine ownership of the issues we face — from initial concepts to enduring outcomes. We maintain close connections with our customers — from leadership to engineers — collaborating to address real challenges with urgency and care. If you flourish in uncertainty, strive for excellence, and wish to shape the future of work alongside a team that elevates the standard, we encourage you to join us in building something great.At Harvey, we are crafting the future of professional services today — and we are just getting started.Role OverviewAs a Staff Software Engineer specializing in Frontend Development at Harvey, you will take the lead on engineering initiatives that shape the user experience across our diverse product suite: Assistant, Vault, Workflows, and our integrations with Microsoft Word and Outlook. You will also spearhead frontend engineering for innovative products currently in development at Harvey. Our team is composed of highly skilled, motivated, and empathetic engineers. We ensure that everything we create meets high standards — from design and architecture to code and communication. If this aligns with your ethos, this role could be an excellent fit for you.This position is based in San Francisco, CA, with a hybrid work model available, and we offer relocation assistance to new hires.What You'll DoDesign and develop new user interfaces for legal professionals and organizations to collaborate effectively with AI.Lead the development of comprehensive UI features for Assistant, Vault, Workflows, our Word/Outlook add-ins, and upcoming Harvey products — managing everything from project scoping and design reviews to implementation, launch, and continuous improvement.Create polished, high-performance interfaces using React and TypeScript, enhanced with TailwindCSS, ensuring seamless interactions, efficient state management, and robust error handling.Architect reusable components and design patterns to streamline development processes and enhance product quality.

Aug 22, 2025
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company
Full-time|On-site|San Francisco Office

About UsAt 3Y Health, we are revolutionizing the healthcare landscape with our innovative AI-driven software designed to empower healthcare providers. Our mission is to streamline the staggering administrative complexities that consume 40% of the industry's revenue. Our comprehensive platform opens doors for clinician entrepreneurs, providing the tools they need to establish, manage, and expand their private practices. By integrating cutting-edge AI and automation, we help practitioners reclaim their valuable time, cultivate successful businesses, and enhance the quality of care in their communities. With over $200M in funding from prestigious investors such as Founders Fund, General Catalyst, Softbank, and 8VC, we are poised for significant growth.About the RoleWe are on the lookout for a talented Frontend Engineer to join our dynamic team, focused on crafting intuitive and high-performance user interfaces that resonate with our providers. The ideal candidate is a product-oriented engineer with extensive expertise in modern frontend technologies (React, TypeScript) and a keen eye for design and user interaction. You value clean, modular code and thrive in collaborative environments with design and product teams to bring sophisticated user experiences to fruition. Candidates with light full-stack capabilities who can tackle backend adjustments to facilitate team progress will be given special consideration. We are particularly interested in individuals who have experience as a founding engineer or entrepreneur, and who possess a strong inclination towards ownership, agility, and continuous improvement.As a Frontend Engineer, you will play a crucial role in shaping frontend architecture decisions and collaborating across engineering, design, and product teams. Your responsibilities will include delivering scalable, modular UI components, collaborating on product development, and enhancing the user experience of our AI-first platform.ResponsibilitiesDevelop and maintain reusable, performant, and accessible frontend components utilizing React and TypeScript.Work closely with designers to create stunning, user-centered experiences.Ensure high UX standards and continually seek improvements in usability.Collaborate with backend engineers to define API interfaces and implement backend logic when necessary.Guide frontend architectural decisions and advocate for best practices in code modularity and maintainability.Engage in code reviews, technical discussions, and team rituals.Adopt a founder’s mindset—proactive, product-focused, and ready to take ownership.

Aug 19, 2025
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companydoss logo
Full-time|On-site|San Francisco

Who We AreAt doss, we are pioneering the concept of the 'Terraform for operators'—an innovative AI-generated schema layer that powers a customizable data warehouse. Our solution enables physical-goods companies to adapt their systems of record as swiftly as their operational needs evolve.Imagine leveraging AI foundation models to facilitate schema migrations, ensuring real-time observability across operational and financial data, managing complex git versioning for schema and data alterations, and orchestrating workflows as if they were infrastructure code.Your RoleDesign and develop the core frontend for our collaborative cloud platform.Steer the technical roadmap for features that enhance the customer-facing experience.Build adaptable infrastructure and components that scale within a composable software environment, akin to tools like Retool, Airtable, Zapier, Figma, and Notion.What We’re Looking ForAbility to take initiatives from concept to execution in uncertain environments.Proficient in Typescript, React, NextJS, and Tailwind CSS.Familiarity with GraphQL, Postgres, ORMs, and Node.js (Express).Experience in utilizing internal APIs for constructing intricate front-end interfaces and components.Skill in converting sophisticated Figma UI/UX designs into flawless browser implementations.About YouTeam player: You bring positivity, openness, and curiosity to the team every day.Growth mindset: You view every challenge as an opportunity to learn and enhance yourself, the team, and the organization.Craftsmanship: You are dedicated to delivering high-quality work.Customer First: You prioritize the customer experience and strive to create a product that delights.Pragmatic: You make decisions based on circumstances rather than theory.Low Ego: You thrive in collaborative settings where team support is paramount.Benefits We OfferComprehensive medical, dental, and vision insurance.Unlimited paid time off and recognized US holidays.401(k) plan with immediate eligibility.Access to fitness-related perks.

Jul 8, 2025
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companyDEUNA logo
Full-time|On-site|San Francisco

Join DEUNA, an innovative startup at the forefront of transforming global commerce with our cutting-edge AI-driven platform, ATHIA. This remarkable orchestration and payments solution empowers enterprises to enhance approval rates, minimize costs, and unlock new revenue streams. As a product developed by a team that has established DEUNA as the fastest-growing Commerce OS in Latin America, ATHIA integrates payment intelligence, checkout optimization, and data orchestration in one powerful package.With extensive integrations across over 300 payment service providers and alternative payment methods, and with more than 20% of Mexico's digital economy leveraging our platform, we streamline global payments through a single integration and centralized reconciliation.As we expand into the U.S. market to cater to the urgent needs of large retailers, marketplaces, airlines, and quick-service restaurants, we invite you to be part of our team and help shape the future of payments!

Sep 25, 2024
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companyIvo logo
Full-time|On-site|San Francisco, California

Join the Engineering Crew at IvoAt Ivo, our engineers are the architects of innovation. As pioneers in the legal tech sphere, we have introduced:• An AI agent that seamlessly integrates with MS Word for effortless editing [2023]• Revolutionary embedding models that enhance agentic retrieval-augmented generation [2023]• Cutting-edge large-scale legal fact extraction tools powered by LLMs [2024]• An intuitive legal assistant for precise contract database searches [2024]• Innovative clustering techniques for legal documents [2025]• Advanced deviation analysis to uncover hidden risks in contracts [2025]• Merging contracts with amendments for seamless time series tracking [2025]Your RoleAs a Senior/Staff Frontend Software Engineer, you will create delightful user experiences through your expertise in frontend technologies.Your responsibilities will include:• Designing real-time, collaborative interfaces infused with AI capabilities• Writing high-performance UI code that stands out• Crafting frontend components that work harmoniously with LLM-powered agents• Collaborating with a diverse team, including designers and lawyers, to transform legal workflows in the age of AIOur MissionEvery major business has a legal team, and these lawyers are often overwhelmed by 80-hour work weeks and tight deadlines. Until recently, technology has offered little relief.At Ivo, we harness the potential of LLMs to restore balance to the lives of these legal professionals. Our goal is to develop an AI-native platform that alleviates legal burdens. Users love our software – with an impressive 85% trial win rate, we are making a tangible difference in the industry, and we are just beginning.

Mar 5, 2026
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companySigma Computing logo
Full-time|$200K/yr - $270K/yr|On-site|San Francisco, CA

Role Overview Sigma Computing builds a high-performance platform focused on modern data architecture. The engineering team is growing and looking for a Staff Software Engineer - Frontend in San Francisco, CA. This role centers on developing features that make data accessible and usable for a wide range of users. What You Will Do Design and build responsive user interfaces using current front-end technologies. Take ownership of major product components from early concept through launch. Work closely with product managers, UX designers, and backend engineers to introduce new features and technologies that improve the product and simplify the experience for users without technical backgrounds. Apply expertise in front-end development to create visualizations for structured and unstructured data. Develop methods to boost application performance and interactivity. Work with modern frontend frameworks, including React, GraphQL, TypeScript, and Node.js.

Apr 25, 2026
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companymat3ra logo
Full-time|$120K/yr - $180K/yr|Remote|San Francisco, California, United States

OverviewAt mat3ra, we are on the lookout for innovative and experienced Senior Engineers to tackle complex challenges that intersect materials science, artificial intelligence, and software development. Join us in creating a cutting-edge software framework aimed at designing and discovering advanced materials and chemicals. Explore our codebase and connect with our dynamic team on GitHub.Your work will concentrate on: (1) crafting 3D and 2D design applications tailored for nanoscale materials and chemistry, (2) organizing data derived from models and experimental validations, and (3) delivering exceptional user experiences for our platform’s initial user base.As we expand, successful candidates will have opportunities to step into leadership roles. This position is full-time and permanent.

Feb 11, 2026
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companyFinix logo
Full-time|On-site|San Francisco

About UsAt Finix, we are revolutionizing the way businesses interact with money. As a comprehensive full-stack acquirer processor, we empower organizations of all sizes with innovative and adaptable payment solutions. Annually processing billions in transactions, Finix enables SaaS, marketplace, and e-commerce platforms to effortlessly accept payments, manage payouts, and onboard merchants. Our suite of no-code, low-code, and developer-friendly tools allows businesses to launch in mere hours rather than months.With over $175 million raised, including a significant $75 million Series C round led by Acrew Capital and backed by notable investors such as Lightspeed Venture Partners, American Express Ventures, and Sequoia Capital, we are poised for growth.As a Senior Frontend Engineer on our Frontend Engineering Team, you will play a pivotal role in architecting and constructing the core payment experiences that empower thousands of businesses. You will be responsible for developing our extensive payments management dashboards and embeddable components that merchants integrate into their applications seamlessly.This position allows you to influence the technical vision for customer-facing products from inception through to production. You will lead design and implementation decisions, ensuring our payment interfaces remain high-performing, secure, and user-friendly as we scale. Our engineering team operates with a high degree of autonomy and ownership—each engineer makes impactful contributions that directly enhance customer success in a dynamic fintech landscape.Finix seeks engineers who possess excellent technical skills, a keen eye for detail, a passion for growth, and a dedication to delivering an outstanding customer experience.

Sep 24, 2025
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companythesirius logo
Full-time|On-site|San Francisco

About UsAt thesirius, we're powered by the backing of a16z Speedrun, dedicated to providing innovative solutions that drive growth for top consumer brands. Our advanced technology is relied upon by industry leaders such as Higgsfield and Promova. As we scale our operations, we are on the lookout for talented professionals who are passionate about making impactful contributions to consumer technology advancements. Join our vibrant team where initiative, ambition, and a commitment to excellence in problem-solving are highly valued.Position OverviewIn the role of Senior Frontend Engineer, you will be instrumental in the design, development, and maintenance of the user-facing elements of our core products. Your key responsibilities will include:Crafting and implementing robust, scalable, and user-centric interfaces that accommodate new features and shifting business requirements.Collaborating seamlessly with backend engineers, product managers, and design teams to deliver high-quality, integrated solutions.Providing technical guidance through best practices, mentoring fellow team members, and engaging actively in code reviews.Championing the adoption of contemporary frontend technologies, frameworks, and methodologies to guarantee product quality and maintainability.Identifying and addressing intricate technical challenges pertaining to user experience, performance, and security.Fostering a culture of continuous improvement and operational excellence within the engineering team.QualificationsA minimum of 5 years of professional experience in frontend development for high-traffic applications.Expertise in JavaScript/TypeScript and familiarity with modern frontend frameworks.Proven experience in integrating frontend applications with backend APIs and third-party services.Strong understanding of UI/UX principles, performance optimization, and frontend architecture.Excellent analytical skills with a track record of independently driving projects to successful completion.Full-time availability and a strong passion for contributing to a high-growth, ambitious environment.How to ApplyWe invite you to submit a brief introduction along with your resume for consideration.

Feb 19, 2026
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company
Full-time|On-site|San Francisco

Example Org is a pioneering software company that facilitates real-time collaboration on critical workflows. Established in 2012, we proudly serve over 10,000 customers globally and are supported by exceptional investors, including Example Capital. Having successfully raised our Series C funding, we are currently valued at $750 million.As a Frontend Engineer at Example Org, you will be an integral part of our innovative team, reporting directly to the team manager. You will have a significant impact on various workflows, contributing to the overall success of our projects.

May 29, 2025

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