Lead Front-End Engineer UI, Performance, & Docs
Parallel
About us Parallel is a web infrastructure company. Our products are used by leading businesses in sales, marketing, insurance, and coding to build best-in-class AI agents with flexible and powerful programmatic access to the web. We've raised $230 million from Kleiner Perkins, Sequoia, Index Ventures, Spark Capital, Khosla Ventures, First Round, and Terrain to build the web for AIs. We're currently valued at $2 billion and we're forming a world-class team of engineers, designers, marketers, sellers, researchers, and operational experts to achieve our mission. About you You're an expert at modern front-end frameworks, maintainable UI architecture, and building UIs that feel intuitive, fast, and beautiful. You have strong production experience with TypeScript, modern CSS, Vercel, and Sanity (or similar headless CMS platforms). You understand responsive design, web performance, and accessibility. You can read API documentation, work effectively with backend teams, and have good instincts for what makes a developer tool feel intuitive versus frustrating. Experience with data visualization or technical documentation sites is a plus. The role Parallel is growing rapidly and in need of an experienced front end development lead—someone to take our web properties from their early iterations to a higher bar of excellence as we expand to serve more customers. You'll design, build, and refine the web experiences that showcase what our powerful APIs are capable of. You'll focus on three key properties: Parallel.ai — our marketing website Platform.parallel.ai — our developer playground and dashboard Docs.parallel.ai — our technical documentation Responsibilities Lead web deployment and hosting operations across our web properties Work with product and marketing teams to develop compelling web experiences that showcase Parallel's core messaging and product features Collaborate with dev rel and forward-deployed engineers on demos and cookbooks that help developers understand technical concepts like structured web search, confidence scoring, and multi-hop agentic research Own the technical foundation and architecture decisions for our web presence as we scale Life at Parallel Our team works fully in-person , between our Palo Alto HQ and San Francisco office. We’re a flat, talent-dense organization dedicated to solving technical and creative problems. We seek like-minded individuals who share our passion for applying science, creativity, and consistency to big and complex problems with equally big outcomes. These are our values: Own customer impact: It’s on us to ensure real-world outcomes for our customers. Obsess over craft: Perfect every detail because quality compounds. Accelerate change : Ship fast, adapt faster, and move frontier ideas into production. Create win-wins : Creatively turn trade-offs into upside. Make high-conviction bets : Try and fail. But succeed an unfair amount. Compensation & benefits Competitive salary Generous equity Visa sponsorships 401K plans Daily lunch & office snacks Dinner at the office Unlimited vacation Caltrain pass reimbursement #J-18808-Ljbffr
- ...Tubi Tv is seeking a UI/UX Engineer to optimize user interfaces across its applications... ...enhance user experience and maintain high-performance applications. This hybrid role... ...experience in UI/UX design, React, and back-end processes to lead engineering initiatives. Exceptional...PerformanceWork at officeFlexible hours2 days per week
- ...This role involves driving architectural excellence, performance optimization, and mentoring engineers amid a rapidly evolving AI landscape. The ideal candidate... ...TypeScript, and a proven record in building complex UI systems. We offer a competitive salary, meaningful equity...Performance
- ...CLERA is seeking a Frontend Engineer to create innovative interfaces for managing Kubernetes... .... The role involves designing high-performance, responsive interfaces and collaborating... ...time data is effectively presented in the UI. Candidates must have a strong foundation...Performance
- ...CSS. Responsibilities include collaborating with design and product teams to create responsive interfaces, optimizing application performance, and ensuring an excellent user experience. Ideal candidates will have 3-5 years of relevant experience and possess a passion for...PerformanceRemote work
- ...A leading AI research and deployment company seeks a Front End Software Engineer to create high-quality user experiences across web platforms. You will... ...design and product teams, ensuring performance and reliability in production UI. Ideal candidates will have strong skills...Performance
- ...technology company in San Francisco is seeking a frontend engineer to design and develop an engaging consumer healthcare product... ...expertise in React and TypeScript, with a focus on UI quality and performance optimization. You will own key parts of our Next.js application...Performance
- ...candidate will translate customer needs into interactive web apps while optimizing for performance. Key responsibilities include collaborating with design and product teams, turning UI designs into prototypes, and ensuring the application serves effectively at scale....Performance
- ...SIM is seeking a Software Engineer, Frontend, to oversee the development of its agent-building canvas and user interface. You will architect intuitive experiences, build high-performance UI components, and collaborate with engineering and design teams to enhance developer...Performance
$325k
...Icehouseventures is looking for a Staff Software Engineer, specializing in frontend development to create impactful software for in... ...opportunity to work on a collaborative AI-enabled interface and high-performance UI code. The ideal candidate will thrive in a startup culture...PerformanceRemote work- ...for individuals excited to solve hard design and engineering problems in Web3. The Role We are looking for a UI/UX Engineer who is equally comfortable creating... ...complex ideas into intuitive, beautiful, and performant user interfaces. This role is ideal for someone...PerformanceRemote workFlexible hours
- ...Developing and implementing UI components using React.js Translate wireframes, storyboards... .... Building reusable components and front-end libraries for future use Optimize... ...applications for maximum speed, scalability, and performance. Validate user input before submitting...PerformancePermanent employmentContract workLocal area
$50k - $175k
...proficient React.js developer to join our front-end development team. In this position, you will be crafting and integrating UI components through React.js methodologies and... ...an integral role in optimizing front-end performance and maintaining comprehensive documentation...PerformanceFull timeWork experience placement- ...quirky, and fueled by curiosity. About the role As a Frontend Engineer focused on UI and design systems, you'll partner with designers to... ...interactive UIs like editors, design tools, or animation-heavy apps Performance optimization skills including React rendering, CSS...PerformanceWork at officeWork from home
$180k - $310k
...system components from buttons and inputs to complex editor UI primitives, implementing polished micro-interactions and... ..., error states, edge cases) while keeping frontend performance sharp. As a Frontend Engineer focused on UI and design systems, you'll partner closely...PerformanceFull timeWork at officeWork from home$120k - $160k
...Summary: We’re looking for a UI Engineer to focus on execution, polish... ...Design Engineer and Frontend leads, and make the product feel fast... ...represents the low and high end of the salary range for this... ...work experience, skills and performance. We believe in the importance...PerformanceFull timeTemporary workWork experience placementLive inWork at office- ...Developer to own the groundwork of our frontend infrastructure, focusing on performance and quality. This role entails close collaboration with designers and PMs as you shape the product's UI. Ideal candidates will have 2+ years of web development experience, particularly...Performance
- ...A technology firm in San Francisco is looking for a UI Developer to design and implement user interface components using React.js... ...wireframes into interactive elements, optimizing applications for performance, and ensuring usability through collaboration with backend...Performance
- .... at Fortune 1000 companies and high‑performing Fintech firms. High‑caliber consultants... ...GSG is seeking a highly skilled UI Developer / UI Lead to join a new application modernization... ...guide the team through the next phase of front‑end development. The ideal candidate will...PerformanceLocal areaImmediate start
$320k - $405k
...group of committed researchers, engineers, policy experts, and business... ..., and actively care about the performance characteristics that shape how... ...basis Work with the UI Platform team to consume shared... ...understanding where latency comes from end-to-end Designing and...PerformanceVisa sponsorshipShift work- ...technology company located in San Francisco is seeking a skilled UI Developer to join their team. Responsibilities include... ...wireframes into interactive elements, and optimizing applications for performance. The ideal candidate should have experience in building reusable...Performance
$135k - $281k
...machine learning to software engineering and interface design. Job Description... ...looking for an experienced UI Design Engineer to... ...Passion to explore an open-ended, multi-disciplinary, constrained... ...alignment of labels and the performance of our decoders. You will actively...PerformanceFull timeTemporary workLocal areaFlexible hoursShift work- ...mission. The Role We are looking for an AI Front-end Engineer who sits at the intersection of product... ...mastered them. You understand the performance consequences of your architectural decisions... ...others - You see \"impossible\" UI challenges as puzzles waiting to be solved...PerformanceWork at officeLocal areaRelocation package
- ...UI Developer(React.JS) Halo Group is a premier provider of IT talent. We place... ...experts within the teams of the world's leading companies to help them build innovative... ...of in production support and performance engineering. Qualifications • Technical skills...PerformanceContract work
- ...technology solutions company in San Francisco is seeking a skilled UI Developer to create and implement interactive components with... ...into code and requires a commitment to maintaining quality and performance standards. Join a diverse team committed to inclusivity and...Performance
- ...solutions company based in San Francisco is seeking a talented UI Developer with expertise in React.js. You will create and implement... ...skills and the ability to optimize applications for performance. This role offers a dynamic work environment and opportunities...Performance
- ...TX Labs is seeking a talented Frontend Engineer to join their team in San Francisco. In this role, you will develop user-friendly web... ...network, ensuring high-quality user experiences and optimizing performance. Ideal candidates will have strong React skills and a passion...PerformanceFlexible hours
- ...Simera is seeking a creative Front-End Developer in San Francisco to build and optimize user-facing applications. This role requires... ...applications, translating designs into code, and ensuring high performance and responsiveness. We value creativity, innovation, and teamwork...Performance
- ...Frontend Engineer (with Familiarity of Full Stack) (Founding Team)... ...team to shape and ship intuitive UIs across multi-tenant analytics... ...Design and build scalable, performant, and accessible frontend components... ...Slack app integrations, Excel/Docs plugins, or workflow UX...PerformanceFull timeTemporary work
- ...product management teams. Various responsibilities include turning designs into prototypes and ensuring applications are optimized for performance. The ideal candidate should have 3 to 5 years of experience, a solid knowledge of HTML, CSS, and JavaScript frameworks. Strong...Performance
- ...Front End Engineer India We Breathe Life Into Data At Komodo Health... ...reusable, high-fidelity UI components in Lightning Web... ...Worked with Engineering leads across the engineering organization... ...component composition, testing, and performance optimization. Experience...PerformanceFor contractorsWork at officeLocal area
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Lead Front-End Engineer UI, Performance, & Docs. Be the first to apply!
- lead product engineer San Francisco, CA
- lead system engineer San Francisco, CA
- lead security engineer San Francisco, CA
- lead operating engineer San Francisco, CA
- lead network engineer San Francisco, CA
- lead infrastructure engineer San Francisco, CA
- lead algorithm engineer San Francisco, CA
- lead web developer San Francisco, CA
- lead backend developer San Francisco, CA
- lead engineer San Francisco, CA

