Frontend Software Engineer

Join the Crew as a Frontend Software Engineer!At Ivo, we sail the seas of innovation! Our engineering team is a band of inventors, leading the charge in the realm of AI and legal technology. We have pioneered:An AI agent that resides in MS Word, transforming documents effortlessly [2023]Revolutionizing embedding models with agentic RAG [2023]Large-scale LLM-…

At Sift, we are revolutionizing the development, testing, and operational processes of modern machines. Our innovative platform empowers engineers with real-time insights into high-frequency telemetry, effectively removing bottlenecks and facilitating rapid, reliable development.Originating from our experiences at SpaceX, where we contributed to projects like Dragon, Falcon, Starlink, and Starship, Sift was founded by a team of experts from SpaceX, Google, and Palantir. Our platform is meticulously designed for mission-critical systems where precision and scalability are paramount.As an early member of the engineering team at Sift, you will not only write code but also play a pivotal role in defining the architecture, shaping the product, and cultivating a company culture dedicated to solving significant engineering challenges. If you seek complex technical problems and the chance to construct foundational systems that support intricate machines, we would love to connect with you.

About WorkWhileAt WorkWhile, we are dedicated to empowering workers to earn a better living and enhance their quality of life. With over 80 million Americans relying on hourly jobs that often come with unpredictable schedules, low wages, and limited benefits, financial stability is often out of reach.We are transforming the landscape of frontline work by fostering a more flexible and efficient labor market. Utilizing advanced AI technology, the WorkWhile platform enables businesses to swiftly access high-quality talent. Our workers enjoy same-day pay, complimentary telehealth services, opportunities for skill enhancement, and the freedom to select shifts that align with their expertise and schedules.With an ambitious goal to align incentives and rectify inefficiencies within the labor market, we are on a mission to disrupt the $650 billion staffing and recruiting industry. Supported by Khosla Ventures and recognized on the Inc. 5000 for 10x growth, WorkWhile is redefining the future of work.

At CreatorIQ, we are the leading operating system for creator-led growth, trusted by over 1,300 brands and agencies globally. Our mission is to humanize business and amplify individual impact through our core values: intentionality, excellence, collaboration, and humanity. Recognized as one of the best companies to work for by BuiltIn LA and NY, we have been listed among the Fastest-Growing Companies in North America on the Deloitte Technology Fast 500™ for four consecutive years. In 2025, we were acknowledged as a leader in the IDC MarketScape: Worldwide Influencer Marketing Platforms for Large Enterprises and praised by The Forrester New Wave™: Influencer Marketing Solutions. With a consistent 5-star rating on Influencer MarketingHub and recognition from G2, we pride ourselves on fostering a flexible work environment that promotes collaboration and innovation.We are on the lookout for passionate and innovative individuals to join our dynamic team. Together, let’s revolutionize the industry!Staff Fullstack Engineer (Backend Focus)In this pivotal role on our Product Innovations team, you will take the lead as a tech expert for AI and ML-driven software initiatives, seamlessly transitioning experimental pilots into production-grade releases. Your responsibilities will span the entire tech stack, where you will design data architectures, develop robust APIs and webhooks, and construct pipelines that empower leading global brands in creator marketing.

Join Filevine, a pioneering Legal AI firm revolutionizing legal work with our cutting-edge Legal Operating Intelligence platform. We unite data, documents, workflows, and teams into a cohesive system that enhances clarity and consistency in modern legal practice.With our innovative Legal Operating Intelligence System (LOIS), we empower legal professionals to shift from reactive to proactive operations. LOIS comprehensively analyzes your data to uncover insights, automate complex processes, and provide the clarity needed to excel. Recognized by Deloitte and Inc. as a leader in technological innovation, Filevine is experiencing rapid growth and is proud to be a top player in the industry.Position Overview:We are seeking a talented Senior or Staff Frontend Engineer to take ownership of essential product features across our Word and web applications. In this role, you will establish high standards for user interface quality, influence architectural choices, and collaborate closely with design, backend, and AI engineering teams. Your contributions will directly impact the workflows of thousands of legal teams daily.This is an opportunity for individuals looking for significant ownership, rapid iteration cycles, and substantial influence within one of Filevine’s most technical and user-oriented product areas.

About the Role Hinge Health is hiring a Senior Frontend Software Engineer in San Francisco (HQ). This role focuses on developing user interfaces that help patients engage with digital health tools. The work directly supports the company’s goal of making healthcare more accessible and effective.

Role Overview Sigma Computing builds a high-performance data platform designed to make analytics accessible and useful for a wide range of users. The engineering team is growing, and Sigma is looking for a Fullstack Staff Software Engineer in San Francisco, CA. This role focuses on solving technical challenges across the stack and shaping features that help businesses work with data more easily. What You Will Do Tackle complex engineering problems to deliver fast, interactive analytics and workflow applications on top of modern data warehouses. Develop software using tools and languages such as Rust, Go, GraphQL, and Typescript. Create new algorithms and techniques to improve performance and interactivity for analytics used by large enterprises. Investigate, debug, and resolve product or system issues by identifying root causes. Design and build new software features to support a rapidly increasing user base. Work closely with teams across infrastructure, design, product, customer support, sales, and marketing to deliver new product capabilities.

About CrunchyrollFounded by passionate anime lovers, Crunchyroll passionately delivers the art and culture of anime to over 100 million fans across more than 200 countries and territories. We connect audiences with the stories and characters they cherish through a variety of platforms including streaming video, theatrical releases, games, merchandise, and events.Join our dynamic team and play a pivotal role in shaping the future of anime!About the RoleAs Crunchyroll continues to grow and evolve, we face unique challenges and opportunities to serve our global anime community. We are seeking a Principal Frontend Software Engineer to design, build, and maintain high-performance applications across diverse platforms, including Operator Devices, Game Consoles, Roku, and Smart TVs.In this influential role, you will help define the technical vision and architecture for our client applications, collaborating with various teams to deliver outstanding streaming experiences to our extensive fanbase. You will lead by example, embody engineering excellence, and promote best practices across the organization.Your Responsibilities Include:Developing and optimizing Crunchyroll’s client applications across web platforms with a strong focus on performance, reliability, and scalability.Collaborating cross-functionally with engineers, product managers, and designers to conceptualize and implement new features.Leading technical design reviews, making informed choices regarding technology and architecture.Coordinating and managing dependencies across teams to ensure smooth feature rollouts.Advocating for a culture of engineering quality through thorough code reviews, automated testing, and continuous integration practices.Partnering with leadership to craft and refine a comprehensive testing strategy, including a scalable testing pyramid.Mentoring and guiding fellow engineers through knowledge-sharing, workshops, and pair programming.Encouraging a culture of ownership, accountability, and agility, while embracing ambiguity and adapting to rapidly evolving requirements.As a Principal Software Engineer, you will report directly to the Senior Director of Fan Experiences. We are currently accepting applicants for our San Francisco location.

Role Overview Sigma Computing builds a platform focused on making data accessible and understandable for users at every level. As the team grows in San Francisco, the company is looking for a Senior Frontend Software Engineer with a strong interest in solving complex problems and shaping core product features. What You Will Do Design and build responsive user interfaces, taking features from concept through deployment. Work closely with product managers, UX designers, and backend engineers to deliver features that improve the experience for users, including those without technical backgrounds. Create visualizations for structured and unstructured data, and develop new ways to boost application performance and interactivity. Work with modern front-end tools and frameworks, including React, GraphQL, TypeScript, and Node.js. Location This role is based in San Francisco, CA.

Join Air Apps as a Backend Software EngineerAt Air Apps, we’re passionate about innovation and speed. Founded by a family in 2018 in Lisbon, Portugal, we are on a mission to revolutionize how individuals and entrepreneurs manage their resources with our AI-powered Personal & Entrepreneurial Resource Planner (PRP). With over 100 million downloads globally, and offices in both Lisbon and San Francisco, we continue to grow as a self-funded company.As a Backend Software Engineer, you will play a crucial role in designing, developing, and maintaining the server-side components of our applications. Your collaboration with product managers and frontend developers will ensure our services are robust and scalable, ready to support our rapid growth.Join us in this exciting journey to redefine resource management and positively impact lives worldwide.

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.

About the Role HeartFlow, Inc. is looking for a Senior Frontend Software Engineer in San Francisco, California. This role focuses on designing and building user interfaces for advanced cardiovascular imaging products. The work centers on creating intuitive, reliable experiences for clinicians and patients. What You Will Do Design and implement frontend features for cardiovascular imaging solutions Collaborate with product, design, and backend teams to deliver high-quality user interfaces Contribute expertise to improve usability and performance Collaboration This position works closely with cross-functional teams to ensure that user needs and technical requirements align throughout the development process.

About Ivo Inc. Ivo Inc. builds legal technology for the future of contract work. The engineering team has delivered several firsts in the industry, including: An AI agent that integrates with MS Word for streamlined document editing (2023) Migration from traditional embedding models to agentic RAG systems (2023) Large-scale legal fact extraction using large language models (2024) A legal assistant that searches extensive contract databases with accuracy (2024) Clustering related legal documents to improve workflow efficiency (2025) Automated deviation analysis to identify hidden risks in large contract sets (2025) Tools for merging contracts and amendments into composite contracts, changing how legal professionals work (2025) Role Overview: Senior Frontend Software Engineer This role focuses on building user experiences that legal professionals rely on every day. As a Senior Frontend Software Engineer, the work centers on creating interfaces that are both intuitive and powerful. What You Will Do Design a dynamic, real-time interface powered by AI Write efficient, high-performance UI code Develop frontend components that connect seamlessly with LLM-powered agents Work closely with designers, legal experts, and engineers to shape the future of legal technology Our Mission Legal teams often face long hours and repetitive contract reviews, with little help from traditional technology. Ivo aims to change that by building an AI-native platform that automates routine legal tasks. The platform is trusted by users and holds an 85% trial win rate, the highest in the market. The team is committed to making a real difference for legal professionals. Who Thrives Here Engineers who care deeply about code quality and want their work to matter Location San Francisco

About the RoleJoin us as a pivotal member of our frontend engineering team, where you will spearhead the development of exciting new features that enhance our user experience.Your Responsibilities:Design and develop the foundational frontend architecture for innovative products from inception to launch.Quickly prototype and refine features to test ideas and improve user interactions.Set and uphold best practices for code quality, testing, performance, and maintainability.Work in close collaboration with design, product, and backend teams to create a seamless user journey.Play an active role in crucial technical and product decisions as part of our founding engineering team.Guide and mentor upcoming engineers, helping to foster a high-performing frontend team culture.

Flex is hiring a Senior Fullstack Software Engineer to join the Risk Engineering team. This position can be based in New York, San Francisco, or remote within the U.S. Role overview This role centers on designing, building, and maintaining applications that support Flex’s risk management efforts. The Senior Fullstack Software Engineer will collaborate closely with teammates to deliver solutions that improve how risk is assessed and managed across the company. What you will do Develop and maintain both frontend and backend components for risk-related applications Work with team members to design features and solve technical challenges Contribute to projects from initial planning through deployment Requirements Experience in both frontend and backend software development Ability to drive projects through the full development lifecycle Interest in building solutions that support risk management

About Our TeamAt OpenAI, we are driven by a profound mission: to ensure that Artificial General Intelligence (AGI) is beneficial to all of humanity. Our commitment to this mission extends to the B2B sector, where we aim to empower businesses, enterprises, and governments to transform their operations, fostering economic growth and enhancing human potential.We develop and manage innovative products that bridge our groundbreaking research with millions of companies and developers globally. Our technology powers the OpenAI API and various enterprise solutions, enabling users worldwide to enhance their productivity and efficiency. Our diverse teams, specializing in product engineering, backend infrastructure, and safety, collaborate to deliver OpenAI's technology with utmost reliability, security, and an exceptional user experience.About the RoleWe are seeking talented Frontend Engineers to design and implement user interfaces that make advanced AI intuitive and accessible. In this role, you will collaborate closely with design, product management, and research teams to create responsive, high-performance, and secure web applications that bring OpenAI’s models and enterprise products to life.This position is based in either San Francisco, CA, or New York City, NY. We operate on a hybrid work model, requiring 3 days in the office each week, and we offer relocation assistance to new hires.Your ResponsibilitiesDevelop and maintain scalable web applications utilizing modern JavaScript/TypeScript, React, and accompanying technologies.Create reusable UI components and front-end frameworks to expedite product development.Enhance client performance while ensuring cross-browser and device accessibility.Collaborate with designers to craft user-friendly and visually appealing interfaces.Participate actively in end-to-end product planning and strategic decision-making.You Will Excel in This Role If You:Possess 5+ years of professional experience (excluding internships) in building production-grade web applications.Are proficient in TypeScript/JavaScript, React, and contemporary web development tools.Demonstrate a strong commitment to design fidelity, performance, and accessibility standards.Enjoy rapid iteration to deliver polished, user-centric features.Previous experience as a founder or early engineer at a startup is a plus.

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.

Woflow is an innovative technology startup dedicated to developing cutting-edge products and solutions for the rapidly evolving on-demand economy. Our flagship offering is a comprehensive platform that empowers our clients to seamlessly request and obtain structured merchant data, including menus, images, and store details, through a blend of web applications and public APIs. At the core of our operations, advanced machine learning and artificial intelligence models work in tandem with an automated distributed workforce management system. Proudly, we are recognized as the world's first Merchant Data Platform.We cater to a diverse clientele, including food delivery services, online ordering systems, and e-commerce marketplaces, providing the robust data infrastructure necessary for their growth and scalability.As a Senior Fullstack Engineer at Woflow, you will play a pivotal role in guiding the evolution of our products and the overall direction of the company. Your day-to-day responsibilities will involve planning innovative features, owning product development from inception to completion, and collaborating with the operations team to address and resolve customer concerns. To excel in this role, a passion for coding, meticulous attention to detail, and a commitment to delivering projects with pride are essential.Key Responsibilities:Collaborate across the technology organization, including engineering, product, and devops/data science teams, to deliver cohesive and successful products.Engage directly with the operations team to ensure our data infrastructure remains efficient and effective.Commit to providing an exceptional user experience by writing clean, maintainable, and efficient code.Thrive in a fast-paced, agile environment where your contributions will directly impact our success.Required Qualifications:A minimum of 5 years of professional software development experience.A strong passion for coding and a continual desire to learn and grow.Proven ability to deliver projects with exceptional attention to detail.Preferred Qualifications:Experience with Ruby on Rails.Proficiency in React.Familiarity with Apollo, GraphQL, and web crawling technologies.

Engineering at Ivo At Ivo, our engineers are the architects of innovation. We pride ourselves on being pioneers in the tech industry, having delivered:An AI agent that integrates seamlessly with MS Word to assist in document editing [2023]A revolutionary approach to embedding models with agentic RAG [2023]Large-scale LLM-based legal fact extraction solutions [2024]A cutting-edge legal assistant capable of efficiently searching extensive contract databases without compromising accuracy [2024]Innovative clustering of legal documents from the same family [2025]Advanced automatic deviation analysis to uncover hidden risks in massive contract databases [2025]The ability to merge contracts with their amendments to create a comprehensive timeline of 'composite' contracts, bringing tears of joy to our clients [2025] RoleAs a Staff Software Engineer at Ivo, you will design, develop, and deploy advanced generative AI products. Your responsibilities will include:Creating comprehensive full-stack generative AI functionalitiesDelivering high-performance UI code and backend systems capable of processing and analyzing millions of contracts efficientlyDesigning intricate pipelines to orchestrate LLMs, data extraction, and clustering algorithms at scaleCollaborating with designers, legal experts, and fellow engineers to reinvent legal workflows in the AI era MissionIn today's fast-paced business environment, in-house legal teams are often overwhelmed, facing long hours and tight deadlines. Our mission at Ivo is to empower these lawyers by leveraging LLMs to reclaim their time. We are building an AI-native platform that automates tedious legal tasks, significantly improving the lives of legal professionals. Despite fierce competition, our software boasts the highest trial win rate in the industry at 85%. We are making a genuine impact, and this is just the beginning.

About Nooks.ai:Nooks is revolutionizing the sales landscape with its AI Sales Assistant Platform (ASAP), designed to automate routine tasks so that sales representatives can concentrate on the essential human aspects of selling and significantly enhance their sales pipelines. Our platform has empowered thousands of sales professionals to meet their quotas, saving customers countless hours and generating hundreds of millions in sales pipeline. Trusted by leading sales teams at companies like Hubspot, Rippling, and Toast, Nooks is poised for remarkable growth.With over $70M raised from top-tier venture capitalists, including Kleiner Perkins—marking its first investment in sales technology in over a decade—Nooks has achieved a staggering 4x growth in annual recurring revenue (ARR) followed by an additional 3x growth, and we aim to triple it once more this year.Discover more at Nooks.ai.About the Role:We are seeking an experienced Fullstack Software Engineer to join our dynamic engineering team. In this pivotal role, you will leverage your expertise in large language models (LLMs) and AI-driven agents to redefine outbound sales strategies for enterprises. You will have the chance to enhance our existing offerings and collaborate with clients to create innovative solutions. As a senior contributor, you will work in tandem with our engineering leadership to define both the technical and product vision. If you thrive in a fast-paced environment and are eager to help us shape a groundbreaking sales technology, we want to connect with you.What You’ll Do:Develop and maintain robust, high-performance applications across the full technology stackDrive the design and implementation of new features within our core platformCollaborate closely with product, design, and other engineering teams to deliver impactful solutionsArchitect and develop front-end components utilizing React and TypeScriptBuild and maintain back-end services and APIs using Node.js and PythonMentor junior engineers on best practices, coding standards, and architectural principlesOversee the end-to-end delivery of features, from ideation to production deploymentContinuously enhance the performance, scalability, and reliability of our applicationsContribute to the technical roadmap of the company, establishing standards for excellence in engineering