Lead Senior Frontend Engineer

Medal is looking for a Senior Frontend Engineer with deep experience in React to help shape the next generation of web applications. This position is based in New York City and centers on building intuitive, reliable interfaces that make a real impact for users. Role overview This role focuses on designing and implementing frontend solutions using React. The Senior Frontend Engineer will work closely with colleagues from various disciplines to deliver scalable and maintainable web applications. Attention to detail and a commitment to high-quality user experiences are essential. What you will do Design and build user interfaces that are both attractive and easy to use Collaborate with cross-functional teams to deliver web applications Apply modern web technologies to improve product quality and performance Requirements Strong proficiency in React Experience developing scalable web applications Ability to work effectively with cross-functional teams

Noise Labs develops a real-time marketplace where attention becomes a measurable and tradable asset. The platform serves individuals and organizations seeking clearer ways to quantify and exchange attention, aiming to redefine how relevance is tracked as digital trends evolve. The team operates from a SoHo office in New York City and numbers just 10 people. While based in NYC, the group welcomes remote collaboration for the right candidate. Role overview This Senior Frontend Software Engineer position calls for someone who writes clean, effective code and cares about design quality. The work centers on translating user needs into products that stand out for both usability and visual appeal. What you will do Build and refine frontend features for a platform focused on measuring and trading attention Work closely with a small team to deliver products that align with user needs Balance technical implementation with design considerations Requirements Strong frontend development skills Sensitivity to design and user experience Ability to collaborate in a small, agile team Comfort working from New York City or remotely

Join our dynamic team at Privy, a leading provider of innovative solutions for businesses, as a Staff Frontend Engineer. In this role, you will work closely with cross-functional teams to develop and enhance our frontend applications, ensuring a seamless user experience. You will leverage modern frameworks and technologies to create responsive and high-performance web applications that meet our users' needs.

Join us as a Founding Frontend Engineer at Meridian, where you will design and develop high-performance, visually captivating applications that power the future of agentic platforms.Your ResponsibilitiesTransform conceptual wireframes into outstanding user interfaces.Utilize advanced CSS techniques to create pixel-perfect and sophisticated user experiences.Enhance front-end code for optimal smoothness and responsiveness in interactions.Collaborate closely with designers and engineers to bring innovative ideas to fruition with speed and accuracy.Play a key role in shaping our product’s core architecture and establishing front-end best practices.Your Profile‍Proficient in React, Next.js, and TypeScript, with a solid grasp of state management and performance optimization.Extensive experience with Tailwind CSS or SASS/SCSS, crafting refined and visually appealing UIs.Demonstrated ability to architect and scale complex Next.js applications, leveraging features such as App Router, SSR, SSG, and ISR.Familiarity with fetch management libraries like react-query or equivalents.Hands-on experience with CSS animations, transitions, and layout techniques for creating fluid, engaging interfaces.A robust portfolio showcasing exemplary front-end development work.A strong eye for design, detail, and user experience, ensuring seamless interactions.Thrives in a fast-paced, high-performance startup environment, rapidly iterating on new ideas.

Role Overview Sigma Computing builds a high-performance platform designed to make data accessible to a broad range of users. The engineering team is growing in New York City, NY, and is looking for a Senior Frontend Software Engineer to help shape the future of the product. This role works with a skilled group of engineers focused on delivering technology that simplifies complex data for businesses. What You Will Do Design and implement advanced, responsive user interfaces using modern front-end technologies. Take ownership of major product features, guiding them from initial concept through launch. Work closely with product managers, UX designers, and backend engineers to build features that improve usability for non-technical users. Apply front-end development expertise to create innovative data visualizations for both structured and unstructured data. Develop techniques that improve application performance and interactivity. Use frameworks and tools such as React, GraphQL, TypeScript, and Node.js in daily work.

About Confido Confido builds AI-powered infrastructure for Consumer Packaged Goods (CPG) brands, helping them manage everything from deduction resolution to production planning. The platform brings together cash application, deductions, disputes, trade promotion management, forecasting, demand planning, and analytics in one place. This integration saves clients time and supports better business decisions. Over 200 brands, including OLIPOP, Simple Mills, Dr. Squatch, and Tropicana, use Confido to manage more than $20 billion in revenue. Backed by $15 million in Series A funding from Footwork Ventures and Y Combinator, the company is positioned for rapid growth. Role Overview The Senior Frontend Engineer will lead the design and development of the user-facing side of Confido’s platform. The focus is on building intuitive, high-performance interfaces that make complex financial workflows easier for users. What You Will Do Design and develop frontend features for the Confido platform Create interfaces that simplify complex operational and financial data Collaborate with engineering and design teams Work with customers to turn detailed requirements into seamless product experiences Location This role is based in the New York City office.

About SomethingsAt Somethings, we are pioneering a revolutionary social wellness platform specifically designed for teens. Our mission is to create a supportive environment where young individuals can build meaningful relationships with mentors who truly understand them, are dedicated to their growth, and provide the guidance necessary for them to flourish.In the U.S., 25 million teens face mental health challenges, and each of the countless teens who engage with Somethings requires assistance. Our goal is to ensure that these individuals do not merely use the platform, but instead connect with compassionate humans who are devoted to their well-being and help them thrive.With backing from General Catalyst and esteemed healthcare and consumer investors, we are experiencing rapid growth — achieving a remarkable 1100% increase in 2025 and aiming for a fivefold growth in 2026.If you aspire to contribute to a transformative company within the mental health sector, we welcome you to join us.Role OverviewWe are seeking a Senior Fullstack Software Engineer specializing in React to join our dynamic, high-impact engineering team. You will play a pivotal role in constructing the foundational web experiences that empower our mentors and operational teams.This position offers high levels of agency, craftsmanship, and impact:You will directly influence the platform experiences that assist teens in connecting and genuinely improving their lives.What You'll DoIn this role, you will take complete ownership of essential projects that align with our strategic objectives for 2026:1. Transform our Mentor Operations Platform into a world-class experienceDeliver web experiences that are fast, reliable, and deeply human-centric.Evolve the mentor web experience from basic functionality to a cohesive, elegant, and leading-edge platform.Create user interfaces that are as intuitive and refined as the best consumer applications.Prioritize performance, accessibility, and interaction quality.2. Develop tools that safely scale our mentor operationsDesign features for mentors that enhance consistency, speed, and connection.Implement safety measures that proactively identify risks and minimize human error.Refine mentor workflows to empower users rather than overwhelm them.3. Take charge of full-stack product developmentBuild comprehensive features across React, backend services, and APIs.Engage in close collaboration with design, product, growth, and clinical operations teams.

About AirOpsAirOps is pioneering the first comprehensive content engineering platform tailored for the AI-driven era. As the landscape of discovery transitions from conventional search methods to innovative AI platforms, we empower brands to enhance their visibility and maintain their relevance in the digital space. Our company is currently experiencing remarkable growth, having quintupled our revenue in the past year by assisting marketing teams at esteemed companies like Ramp, Chime, Carta, and Rippling in transforming content quality into a sustainable competitive edge.Our platform equips marketers to adeptly navigate the evolving discovery landscape, prioritize impactful opportunities, and generate precise, on-brand content that garners citations from AI systems and builds trust with human audiences. Supported by notable investors such as Greylock, Unusual Ventures, Wing VC, and Founder Collective, we are on a mission to create intelligent systems that will empower the next generation of marketing leaders. AirOps is headquartered in San Francisco, New York, and Montevideo.About the RoleAs a Senior Frontend Engineer at AirOps, you will be instrumental in developing and enhancing our software products, with a strong emphasis on creating exceptional user interfaces that boost usability and functionality. You will utilize your extensive experience in software development, data analysis, and Generative AI techniques to formulate groundbreaking AI solutions that streamline processes and elevate the user experience.We are looking for a versatile Senior Software Engineer who excels in adaptability and possesses strong cross-team communication skills. Given the rapid advancements in the software sector, your ability to quickly learn and implement new technologies and methodologies is crucial.Key ResponsibilitiesSpearhead the design and implementation of innovative user-facing features within our platform.Work in close collaboration with backend engineers to seamlessly integrate and utilize APIs.Take ownership of the frontend codebase, ensuring adherence to best practices for scalability and performance.Actively engage in code reviews, maintaining high standards for quality and reliability.Organize and prioritize tasks, collaborating with the team to ensure project milestones and deadlines are achieved.Stay updated with the latest advancements in frontend technologies and AI to discover innovative solutions for integration into our platform.QualificationsMinimum of 5 years of experience in software development, particularly focused on frontend technologies.Proficient in React and familiar with modern frontend frameworks and libraries.Solid understanding of frontend architecture, design patterns, and best practices.Experience with performance optimization and debugging tools.Strong problem-solving skills and a passion for user-centric design.

Join Avoca as a Frontend EngineerAt Avoca, we are revolutionizing the way home service companies connect with their customers through cutting-edge AI technology. Our AI-powered conversational agents expertly manage every significant inbound call, from scheduling jobs and qualifying leads to enhancing revenue streams—all with an unmatched speed and consistency that exceeds traditional call centers.In just under two years, we have grown to a dynamic team of 85 employees, fostering a vibrant in-office culture in New York City. As we navigate the expansive $500B+ market where every missed call signifies lost opportunities, we are dedicated to creating the leading platform for AI-driven customer engagement.With a remarkable growth rate of 10x in 2025, we proudly serve the most prestigious brands in home services. Our high-performing, in-office team is poised to capture a significant and underserved market, where a staggering 85% of missed calls lead customers to competitors. Each new hire at Avoca is guaranteed to make a meaningful and visible impact.About the RoleWe are seeking a pioneering Frontend Engineer who excels at the convergence of engineering and product innovation. You will take ownership of features from inception to execution, designing, building, launching, and refining them while prioritizing customer experience and measurable results. Your contributions will directly influence how thousands of customers engage with our AI-empowered customer service platform.

The Atlas Growth team is a dedicated group of cloud engineers committed to supporting our customers throughout their application development journey. We handle everything from cluster configuration and data modeling to load testing and managing production workloads at scale. Utilizing our proprietary experiments platform, we validate new features rapidly, ensuring that we only release enhancements that benefit our users. Our engineers collaborate in cross-functional squads consisting of product, design, analytics, and research teams, all focused on achieving specific performance metrics such as retention.Atlas Growth 2 is responsible for creating customer-facing features within the Atlas platform and works alongside other teams within the Growth engineering division. Recent initiatives have included developing an AI Chatbot for cluster creation, implementing a recommendation system for improved database performance, and designing a pricing page optimized for conversion rates.This role is based in our New York City office and supports both our Flexible and In-Office working models.

About MercivMerciv is an innovative startup specializing in AI and data analytics, committed to revolutionizing the way businesses leverage strategic intelligence. Our goal is to empower organizations to effectively utilize data, derive actionable insights, and make informed strategic decisions through state-of-the-art AI pipelines and adaptive forecasting tools.Imagine a future where every business decision is backed by timely and relevant data, blending AI capabilities with human intuition. Our technology:Integrates varied data sources into a unified intelligence layerEnhances human decision-making through autonomous AI analysisReveals insights and opportunities overlooked by conventional toolsPredicts outcomes and assists teams in managing uncertainty with clarityEmpowers organizations to proactively shape their marketsWe are dedicated to creating solutions that are not only powerful and scalable but also remarkably intuitive, enabling teams across the organization to utilize them effectively, beyond just the data specialists. Having secured $14M in seed funding, we are building a robust team centered around a strong engineering culture and are set to launch publicly after nearly two years in stealth mode.About the TeamOur team is developing an agentic AI platform that is transforming how enterprises engage with data. Merciv seamlessly connects an organization’s entire data ecosystem with external data sources—such as social media trends, industry reports, and consumer behavior signals—to unveil insights and automate workflows that previously consumed analysts’ weeks.We prioritize making powerful tools feel accessible and simple. Each feature should be intuitive, and every component must be interactive. We aspire for users to open Merciv and feel instantly empowered to achieve more than before.Our nimble, agile team flourishes on innovation and independence. With a small enough team that every member takes genuine ownership, we utilize a Directly Responsible Individual (DRI) model—enabling you to own significant product features from inception to launch, rather than merely contributing to them. You will wear multiple hats, and that’s by design.Our work environment fosters creativity and cutting-edge technology, designed for those keen on shaping the future of human-AI collaboration. If you’re enthusiastic about joining a dynamic, innovative startup culture and making a substantial impact on client businesses, Merciv is your ideal workplace. Join us as we broaden the scope of retail intelligence and deliver unmatched value to our clients.

Join our innovative team at hifi as a Frontend Software Engineer, where you will play a critical role in developing cutting-edge web applications. You will collaborate with designers and backend engineers to create seamless user experiences and responsive interfaces that meet the needs of our clients.

aescape seeks a Senior Frontend Engineer to join the team in the NYC/Metro area. The focus is on creating web applications and interfaces that are both practical and easy to use. Collaboration is central, with engineers and designers working side by side to deliver results that work for real users. Role overview Build and maintain frontend features for aescape’s web applications Partner with engineers and designers to develop user-friendly interfaces Share ideas and feedback to help improve the overall user experience Location This position is based in New York City or the surrounding metro area.

At profound, we are dedicated to empowering companies in navigating and mastering their AI presence. As a Frontend Software Engineer, you will be instrumental in crafting high-performance, visually stunning applications using React that redefine AI-driven marketing experiences.Your ResponsibilitiesDesign and enhance sleek, high-quality user interfaces based on low-fidelity wireframes.Utilize advanced CSS techniques to create exceptional, pixel-perfect user experiences.Optimize front-end performance, ensuring fluid and seamless user interactions.Collaborate closely with design and engineering teams to bring innovative ideas to fruition with speed and precision.Contribute to the architecture and best practices of our product's front end.Your ProfileProficient in React, Next.js, and TypeScript, with a strong grasp of state management and performance tuning.Solid experience with Tailwind CSS, SASS, or SCSS, delivering refined, polished, and visually appealing user interfaces.Demonstrated ability to architect and scale complex Next.js applications, utilizing features such as App Router, SSR, SSG, and ISR.Familiarity with fetch management libraries like react-query or equivalent.Hands-on experience with CSS animations, transitions, and layout techniques to create captivating, interactive interfaces.A robust portfolio showcasing your high-quality front-end development projects.A strong eye for design, detail, and user experience, ensuring seamless interactions.Comfortable thriving in a dynamic, high-performance startup environment, quickly iterating on new ideas.Experience with GSAP for creating smooth animations and interactions.Familiarity with R3F, React Three Fiber, or Three.js for delivering immersive 3D experiences.Proven track record of leading large-scale migrations to Next.js, designing and implementing solutions that leverage its strengths.Deep understanding of caching mechanisms and CDN integrations to enhance performance and scalability for Next.js applications.Experience in implementing sophisticated internationalization and localization strategies for global audiences in Next.js projects.Practical experience working with React Software Engineering methodologies.

Join AtrixAt Atrix, we empower medical affairs teams within pharmaceutical companies to navigate the overwhelming sea of unstructured data—from field notes taken by medical science liaisons to insights gleaned from conferences and post-market studies. Our mission is to ensure that valuable insights reach clinicians promptly and effectively, improving patient outcomes.We have built a robust platform that transforms disorganized data into actionable insights, collaborating with leading pharma companies and outperforming larger competitors by prioritizing customer needs and delivering innovative solutions.About UsWe are a dynamic, senior team with backgrounds from industry giants like Google, a16z, Plaid, and Kickstarter. As a seed-stage startup based in New York City, we are dedicated to building and scaling impactful products.Your RoleAs our fourth engineer and first dedicated frontend hire, you'll have a unique opportunity to shape the frontend landscape as we expand. You will develop responsive, server-rendered features using React and Next.js, enhance performance, and collaborate on Python services that power our applications.Your ResponsibilitiesLead the development of our Next.js application (SSR + SSG), with a focus on complex data tables and visual analytics handling large datasets.Make key decisions regarding frontend architecture and establish long-term technical strategies.Develop product analytics strategies and implement the necessary tools.Contribute to backend development using FastAPI as needed.Your Qualifications5+ years of experience with JavaScript/TypeScript, and at least 3 years of production experience with React.Proficiency with Redux Toolkit or a similar state management library.Experience with SCSS or CSS-in-JS, along with a solid understanding of accessibility standards (WCAG).At least 2 years of experience with Python in various contexts (scripts, CLI, data pipelines, etc.).Minimum of 2 years of backend development experience in any language.Preferred QualificationsFamiliarity with React Query or TanStack Query.Experience with virtualized grids or tables.

About RilletAt Rillet, we empower accounting and finance teams to enhance their operational efficiency. Our clients are the financial strategists of their organizations, and our mission is to provide them with tools that deliver unparalleled speed, accuracy, and insights.Rillet is an innovative AI-driven ERP solution designed to facilitate rapid financial closures. What sets us apart is our cohesive data model, extensive range of seamless integrations (including Stripe, Ramp, Salesforce), automated workflows that are both efficient and auditable, and our growing suite of specialized AI agents that tackle various financial tasks. We take pride in maintaining a perfect customer satisfaction score. High-growth companies such as Mercer, Windsurf, and Function Health appreciate our ability to scale alongside their financial infrastructure.With significant backing of $100M from top-tier investors including Sequoia, a16z, Iconiq, Oak HC/FT, and First Round, we are poised to revolutionize financial operations.Our CultureRillet is a fast-paced environment where intelligence is essential. To thrive here, one must exhibit remarkable agility, proactivity, and adaptability.Successful team members at Rillet take initiative, internalize our mission, devise innovative strategies, and deliver superior results that surpass expectations.Our work is customer-centric, and we seek individuals who take pride in delivering high-impact solutions, even when they diverge from the initial plan.While accounting experience is not mandatory, a genuine appreciation for how our solutions empower our clients is crucial. Our team members are passionate about enhancing the financial backbone of the most dynamic companies around the globe.Position OverviewWe are in search of a skilled Senior Frontend Engineer to enhance the user interface of Rillet's cutting-edge accounting and finance software. In this role, you will collaborate with our CTO, product team, and designers to create user-friendly, high-performance interfaces that finance professionals will love to utilize.We value in-person collaboration and prefer candidates who are within commuting distance of our New York City or San Francisco offices, or those willing to relocate. Our team members are expected to work in the office on Tuesdays and Thursdays, along with one additional flexible in-office day. Some roles may necessitate more in-office presence based on specific functions.

Standard Template Labs is an innovative, AI-driven startup operating in stealth mode, focused on redefining the future of IT Service and Configuration Management. With the backing of prominent investors, we are harnessing the power of artificial intelligence, graph-based architecture, and cutting-edge design to revolutionize the way enterprises interact with their technology ecosystems.The RoleWe are on the lookout for a Senior Front-End Engineer (AI-Driven) to become a vital member of our expanding engineering team. In this role, you will take ownership of the user-facing product development from inception to deployment: crafting sleek, high-performance interfaces, establishing front-end technical strategies, and utilizing AI-enhanced tools to expedite the development process. You will collaborate closely with Product, Design, and Backend Engineering teams to translate complex enterprise workflows into seamless and scalable front-end solutions.This is a hands-on senior position that offers substantial ownership—perfect for individuals who thrive on building, mentoring through demonstration, and elevating the standards of front-end quality throughout the product.What You’ll DoLead the front-end architecture for critical product surfaces, making informed decisions regarding state management, data retrieval, performance, and scalability.Develop responsive, accessible, and high-performance user interfaces using modern front-end technologies such as React, Next.js, and TypeScript.Design, build, and refine a shared component library and design system to ensure consistency, usability, and maintainability as the product evolves.Work closely with backend engineers to define API contracts (REST/SSE/GraphQL) and facilitate efficient data flow between the front-end and back-end systems.Create AI-first, real-time user experiences, including dynamic components that react to backend and model outputs.Utilize AI-assisted development tools (code generation, refactoring, testing, linting, review) as essential elements of your workflow to enhance productivity while maintaining high code quality.Collaborate closely with Product and Design teams to translate UX concepts and wireframes into production-ready features, proactively identifying edge cases, trade-offs, and implementation challenges.Champion performance, accessibility, and quality across the front-end stack, ensuring optimal load times, responsiveness, cross-browser compatibility, and accessibility standards.Establish and maintain high engineering standards: produce clean, testable code; lead by example in code reviews; and help define best practices for the team.

About HyphaHypha is an innovative AI-driven platform that is revolutionizing asset management throughout its entire lifecycle—covering acquisition, management, and exit strategies. With a specialized focus on healthcare facilities and multifamily real estate, we are transforming the industry through three fundamental pillars:Observability: Delivering real-time insights into asset performance, deal progression, and market dynamics for all stakeholders involved.Intelligence: Facilitating AI-enhanced optimization across multiple dimensions, including risk assessments, tax strategies, and performance benchmarking.Orchestration: Establishing seamless workflows and a unified source of truth to eradicate inefficiencies.Role OverviewIn the capacity of a Senior / Staff Frontend Engineer at Hypha, you will take ownership of the user experience layer of our platform. You will create interfaces that allow users to navigate through intricate financial data, AI-extracted entities, document viewers, dashboards, and conversational search functionalities. Collaborating closely with product and design teams, you will convert intricate workflows into interfaces that are intuitive, swift, and user-friendly.This position emphasizes both the art of frontend development and the architecture behind it. You will lead the charge in developing high-quality user interfaces, influence interaction patterns across our platform, and make critical decisions regarding component architecture, performance, state management, and frontend scalability. Your objective is to simplify complex data and AI-driven workflows while defining standards and systems that maintain frontend speed, cohesiveness, and maintainability as Hypha continues to grow.This opportunity is tailored for senior and staff-level frontend engineers with extensive experience in crafting polished, high-performance product experiences and shaping frontend architecture in a production environment. Compensation will be commensurate with experience, technical expertise, and scope of responsibility.

About N1:N1 is an innovative leader in blockchain technology, providing a hyper-efficient and horizontally scalable network that facilitates trustless computing on an internet-wide scale.Our diverse team hails from esteemed institutions such as Harvard, Carnegie Mellon University, DFINITY, VMWare, and Galaxy Digital, and is supported by elite venture capital firms including Founders Fund, Kraken Ventures, SALT, and Amber Group.Position Overview:We are in search of a talented frontend engineer who has a keen eye for design and a passion for creating exceptional, high-performance user experiences across our digital platforms. As a crucial member of our agile team, you will contribute to the development of blockchain products, directly influencing user interaction with our cutting-edge technology. This opportunity is perfect for individuals who are resourceful, deeply invested in product development, and possess strong design instincts.