Front-end Developer at leverdemo193 | San Francisco

We are seeking a passionate Front-end Developer who is eager to blend creativity with technical skills. In this role, you will be responsible for translating UI/UX design wireframes into code, bringing the visual aspects of our applications to life. You will collaborate closely with our UI/UX designers to bridge the gap between aesthetic design and functional implementation, actively contributing to both to define the application's appearance and performance.

Join our innovative team at leverdemo193 as a Backend Engineer, where you will play a pivotal role in developing robust server-side applications. You will be responsible for managing data interchange between servers and users, focusing on the development of all server-side logic, maintaining the central database, and ensuring optimal performance and responsiveness to front-end requests. Collaboration is key, as you will also integrate front-end elements created by your colleagues into the application. A fundamental understanding of front-end technologies is beneficial for this role.

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

Join Checkr as an Engineering Manager for our Front End team, where you will lead a talented group of engineers in building innovative solutions that enhance our platform. You will play a pivotal role in shaping the user experience and driving the technical vision for our web applications. If you are passionate about technology, team leadership, and making a meaningful impact, we want to hear from you!

About UsAt salient, we are pioneering the AI infrastructure that will revolutionize financial operations, starting with the automation of intricate workflows in loan servicing.Supported by top-tier investors like a16z and Y Combinator, we have successfully raised $65 million in Series A funding.Achieving an 8-figure Annual Recurring Revenue (ARR) in under two years, we currently serve over 20% of the auto lending industry, efficiently processing millions of customer calls and transactions daily.Our solutions are fully operational with leading financial institutions, going beyond mere proofs of concept.We are rapidly expanding into new segments of financial services!Embrace our vibrant in-person office culture located in San Francisco, CA.Our team is fully integrated with our clients, managing the entire stack, and moving swiftly to introduce modern AI into regulated sectors where accuracy, consistency, and performance are paramount.About the RoleWe are seeking a dedicated Front-End Software Engineer to create dynamic, user-friendly interfaces that empower users to interact with complex data effectively. You will collaborate closely with product, design, and AI teams to develop elegant user interfaces, define frontend architecture, and deliver features that significantly enhance user experiences at scale.As an early and visible member of a nimble engineering team, you will take ownership of features from inception to delivery, contribute to UI strategy, and help mold the future of our products as we expand our offerings beyond voice.What You’ll DoCraft responsive and high-performance user interfaces utilizing React and TypeScriptSimplify complex workflows into user-friendly product experiencesEngage in cross-functional collaboration with product, design, and AI teams to innovate and iterate quicklyContribute to defining frontend architecture and develop reusable UI componentsCreate data visualizations that clarify and make financial data actionableCollaborate with backend engineers for seamless API and service integrationsDeliver clean, testable, and maintainable code in a rapid release cycleChampion the user perspective in product and engineering discussionsWhat You’ll Bring4+ years of experience in developing production-level front-end applicationsProficient in React and TypeScript, with a solid understanding of modern web technologiesDemonstrated ability to translate complex requirements into user-friendly solutions

About UsAt Parallel, we are pioneers in web infrastructure, empowering businesses in sales, marketing, insurance, and software development to create state-of-the-art AI agents. Our innovative products grant flexible and robust programmatic access to the web.With a remarkable funding of $130 million from leading investors including Kleiner Perkins, Index Ventures, Spark Capital, Khosla Ventures, First Round, and Terrain, we are on a mission to redefine the web for AI applications. Join our exceptional team of engineers, designers, marketers, and researchers as we embark on this exciting journey.About YouYou are a skilled front-end developer with expertise in modern frameworks and a passion for crafting maintainable and user-friendly interfaces. Your experience includes working with TypeScript, contemporary CSS, Vercel, and headless CMS platforms like Sanity.Your understanding of responsive design, web performance, and accessibility principles is solid. You are adept at reading API documentation, collaborating with backend teams, and creating intuitive developer tools. Familiarity with data visualization or technical documentation is an added advantage.The RoleAs Parallel continues to grow, we seek an experienced front-end development lead to elevate our web properties from their initial versions to outstanding platforms that cater to our expanding customer base.Your primary focus will be on designing, building, and enhancing the web experiences that showcase the capabilities of our powerful APIs. You will concentrate on three key properties:Parallel.ai — our marketing sitePlatform.parallel.ai — our developer dashboard and playgroundDocs.parallel.ai — our technical documentation hubResponsibilitiesOversee web deployment and hosting operations across our digital assetsCollaborate with product and marketing teams to craft engaging web experiences that effectively communicate Parallel's core messages and product featuresWork closely with developer relations and deployed engineers to create demos and documentation that simplify complex technical concepts for developers.

Join Kiddom as a Senior Front End Software EngineerAt Kiddom, we are revolutionizing education with our innovative platform designed to foster student equity and growth. By integrating high-quality instructional materials with engaging digital learning experiences, we empower schools and districts to take charge of their curriculum. Our platform not only enhances educational outcomes but also provides invaluable data insights for teachers and leaders to refine their instructional strategies and professional development.As a Senior Front End Software Engineer, you will play a key role in crafting impactful product experiences utilized by educators, students, and administrators on a daily basis. Collaborating closely with product managers, designers, and backend developers, you will create scalable and user-friendly front-end systems. This position is perfect for a detail-oriented individual who values craftsmanship and excels in a collaborative, mission-driven environment.

Join DepthFirst AI as a Product EngineerAt DepthFirst AI, we recognize software as the cornerstone of modern civilization, yet we are aware of the vulnerabilities that jeopardize its security and resilience. Our mission is to combat these threats through innovative solutions.We are pioneering AI technology that autonomously detects and resolves critical software vulnerabilities. Our advanced security AI agents are designed to discover zero-day vulnerabilities across extensive customer codebases and popular open-source software.Our founding team boasts expertise from leading companies like DeepMind, Databricks, Square, and Faire, and we seek talented individuals eager to explore the crossroads of AI, security, and infrastructure.Your Role:We are looking for an experienced Product Engineer with a focus on front-end development to spearhead the creation of our groundbreaking AI-native platform. This platform autonomously identifies and rectifies software vulnerabilities in code, currently serving a diverse array of large clients. You will play a vital role in shaping the product, understanding user needs, and reinventing security practices for organizations.Responsibilities:Product Development: Design and develop AI-driven products that address significant challenges, helping companies prevent major leaks.Performance Optimization: Own front-end performance and ensure our website exceeds industry standards for speed and responsiveness.Technology Utilization: Utilize Next.js, React, and the latest web development methodologies to build robust, scalable, and high-performance solutions.Impactful Work: Contribute to a product that addresses a critical issue, with large clients already uncovering significant vulnerabilities shortly after implementation.

HUD builds infrastructure to support reinforcement learning training data and evaluation, serving advanced AI agents. The team is also developing a marketplace for these resources, working with leading AI labs, Fortune 500 companies, and startups. Backed by $15 million from top investors, HUD is part of Y Combinator's W25 cohort. Role overview This Full-Stack Engineer position emphasizes front-end expertise and user experience. The role involves developing features that span both client and server sides, with a focus on building intuitive, high-quality interfaces for HUD's core products. What you will do Build and launch product features across the stack, ensuring a seamless experience from front-end to back-end. Translate product and design requirements into polished, user-friendly interfaces. Optimize application performance for responsiveness and compatibility across browsers. Develop and maintain backend services and APIs that support key product functions. Work directly with customers to understand workflows and use feedback to improve the product. Requirements Experience owning products end-to-end and working across the stack. Ability to learn new technical concepts quickly, such as through competitive programming or similar challenges. A portfolio of shipped products, side projects, or live demos that highlight front-end skills. Background in early-stage startups and comfort working independently in changing environments. Familiarity with modern AI tools and an understanding of large language models (LLMs). Clear communication skills for remote collaboration across time zones. Bonus experience Exceptional portfolio in UI/UX, interaction design, or creative engineering. Experience with reinforcement learning, post-training, or model training workflows. Knowledge of product analytics tools and experimentation methods such as A/B testing. HUD values technical ability and growth potential over years of experience. Ambitious candidates are encouraged to apply.

Why Join ivo?At ivo, we recognize that contract negotiation is not only time-consuming but also a costly aspect of the contract lifecycle. Despite advancements in technology, the process remains challenging and has not significantly improved since the era of fax machines.With the advent of large language models, we now have the capability to address numerous contract negotiation issues at scale. Our top-tier product boasts an impressive 85%+ head-to-head trial win rate and is trusted by leading companies worldwide.Position Overview:We are seeking a talented Design Engineer to become a pivotal member of our San Francisco team. As our first Design Engineer, you will have the unique opportunity to influence the direction of ivo’s product, enhance user experiences, and develop our overarching design strategies. You will collaborate closely with leadership and engineering teams to craft intuitive, user-centered designs that fulfill our customers' needs. A balance of product design and front-end engineering expertise is ideal for this role.Your Responsibilities:Contribute significantly to the entire design and creative process.Gain a deep understanding of our product to craft industry-leading user experiences.Develop our front-end framework and advocate for a reusable component system.Work alongside our founders to establish product strategy and prioritize the roadmap through a design perspective.Maintain high-quality standards while ensuring rapid delivery.

Key Responsibilities:Take charge in designing and implementing our flagship product, ensuring a top-notch user experience.Innovate by prototyping and iterating new feature sets, leveraging cutting-edge AI technologies.Establish technology best practices and conduct research for future platform enhancements.Contribute to the growth of our product team by hiring, mentoring, and fostering talent.Analyze high-quality datasets from Fortune 500 clients to provide actionable insights for our customers.

Are you ready to elevate your career in a vibrant and sustainable start-up? Lever is seeking a talented Marketing Analyst to spearhead the analysis of our diverse marketing initiatives, including paid social media, SEM, SEO, email campaigns, organic social media, and offline strategies.Our Growth Marketing team is at the forefront of transforming our online presence through innovative digital strategies. This group of data enthusiasts is passionate about tracking growth and engagement, blending analytical insights with real-time awareness of digital trends. You'll find them just as likely to present complex analyses as they are to share the latest viral meme.In the role of Marketing Analyst, you will collaborate closely with our user acquisition and retention teams to evaluate e-commerce performance and enhance the customer experience. Your success will hinge on your ability to inform and refine our marketing strategy, providing insights that drive program success and improve customer performance.

Join Front, the premier AI-driven customer service platform designed for seamless collaboration. Our innovative workspace integrates essential support channels, allowing teams to work together on requests, automate tedious tasks, and provide exceptional customer experiences throughout every interaction. With advanced workflows, AI capabilities, and customer insights, we empower organizations to prioritize their customers daily. Trusted by over 9,000 forward-thinking companies, including CultureAmp, HootSuite, and Y Combinator, Front is dedicated to delivering outstanding service at scale.Supported by renowned investors like Sequoia Capital and Salesforce Ventures, Front has successfully raised $204M from top-tier venture capitalists and industry leaders from companies such as Atlassian, Okta, Qualtrics, Zoom, and PagerDuty. We take pride in being recognized as one of the best workplaces, earning accolades such as Built In's 100 Best Midsize Places to Work in SF 2025, Top Places to Work by USA Today 2025, Y Combinator's list of Top Companies in 2023, and #4 on Fortune’s Best Workplaces in the Bay Area™.We are actively seeking talented engineers to join our Foundations team. This dedicated group is responsible for constructing the frameworks and systems that support our customer-facing functionalities. By developing shared libraries, frameworks, and tooling, they ensure that the infrastructure upon which we build Front is both scalable and dependable.

Join the dynamic team at Equinox as a Front Desk Associate, where you will be the first point of contact for our esteemed members. Your role will involve welcoming guests, managing inquiries, and ensuring a seamless check-in experience. We pride ourselves on delivering exceptional service, and your positive attitude and friendly demeanor will play a crucial part in our members' experience.

Role Overview The Trade Desk is hiring a Senior Front End Software Engineer for the Deal Desk team. This role focuses on building polished, reliable web interfaces that help drive our product forward. The team values engineers who bring fresh ideas and enjoy solving complex problems alongside colleagues from different disciplines. What You Will Do Design and implement user interfaces for Deal Desk products using modern front-end technologies Work closely with engineers, designers, and product managers to deliver features that improve user experience Contribute to decisions that shape the direction of our web applications Ensure code quality and maintainability through thoughtful engineering practices Location Positions are available in Irvine, New York, San Francisco, San Jose, and Ventura.

Important NoticeThis is a full-time, on-site position located in San Francisco (Presidio), where you will work in our office five days a week.Candidates must be residents of the Bay Area or willing to relocate prior to starting.We require valid US work authorization, and we are open to sponsoring an O-1 visa for exceptional candidates.Role Overview: Senior Full Stack Engineer (Back-End)Your ResponsibilitiesIn this role, you will develop and deploy full-stack features from backend APIs to the user interfaces that enhance user interactions on a daily basis.As part of a small team of roughly 15, you will not only implement new features but also influence key architectural decisions that will support scaling our system to handle significantly increased loads.You will collaborate closely with our CTO on various initiatives, including:Establishing and managing sandbox environments for agent code execution, ensuring security, resource limits, and process isolation for thousands of concurrent sessions.Designing deployment and migration processes for a Cloudflare Workers and Fly.io architecture, incorporating blue-green deployments and canary testing.Implementing end-to-end instrumentation for real-time workloads, including SSE streaming and task queues.Delivering new backend features, tool integrations, and memory indexing, with immediate impact on real users.Minimizing operational overhead through effective logging, monitoring, and incident response tools tailored for our scale.Your innovative ideas!Technology StackWe leverage a range of technologies including TypeScript, Cloudflare Workers, Durable Objects, Hono, Drizzle ORM, Postgres, Zod, SST, Vercel AI SDK, Docker, React, and Vite.Candidate ProfileEssential QualificationsA minimum of 5 years of engineering experience developing and maintaining backend systems in a production environment, with on-call responsibilities.Proficient in TypeScript with a strong preference for backend development, while also being capable across the entire stack.

Join Equinox as a Front Desk Associate, where you will be the first point of contact for our esteemed members. Your exceptional customer service skills will help create a welcoming environment, ensuring our members enjoy an unparalleled experience. With your proactive approach, you will assist in managing daily operations and provide support to both members and staff.

Role Overview Actionlife is hiring a Front Desk Associate in San Francisco, CA. This position serves as the first point of contact for clients and visitors, greeting everyone who enters and setting the tone for their experience. The Front Desk Associate helps maintain a welcoming atmosphere and supports the daily flow at the front desk. What You Will Do Welcome clients and visitors as they arrive Represent Actionlife with a professional and friendly attitude Support front desk operations to keep things running smoothly Location This role is based onsite in San Francisco, CA.

Join eproinc as a Back-End Database Developer where you'll play a critical role in designing, developing, and maintaining robust database systems. This is an exciting opportunity for a seasoned developer looking to leverage their expertise in a dynamic environment.In this position, you will collaborate with cross-functional teams to ensure data integrity, optimize performance, and contribute to innovative solutions that drive our business forward.

Back End Developer LeadSan Francisco, CAAt Rothy's, our mission is to revolutionize the fashion industry by prioritizing sustainability and ethical practices. We have successfully repurposed over 200 million single-use plastic bottles and 715,000 pounds of ocean-bound marine plastic into our signature thread, crafting wardrobe essentials that are as stylish as they are environmentally friendly.With a commitment to zero waste, we blend advanced 3D knitting technology with meticulous handcrafted assembly to produce machine-washable styles that do not sacrifice comfort. From iconic shoes to versatile bags, our products are designed for every adventure.At Rothy's, we are dedicated to building a sustainable future and believe in creating an inclusive workplace at our headquarters, retail locations, and wholly-owned factory, expanding our community every day.About the Team:Our Digital Experience team is the backbone of Rothy's, ensuring that all technological aspects run smoothly—both for our visually stunning website and internally by providing essential IT support across departments. As a fast-paced, modern organization, technology permeates our operations, and we rely on our talented team to keep everything functioning seamlessly.About the Role:We are seeking a strategic and seasoned Back End Developer Lead (Director level) to build, supervise, and expand our team of developers dedicated to supporting our Product (Merchandising, Allocation & Design), Production, Product Development, Supply Chain, and HR, Legal, and Finance functions. In this influential role, you will define the technical vision across these areas, mentor engineers, and collaborate closely with cross-functional leaders to deliver scalable, high-quality technology solutions. This opportunity is ideal for someone who excels in both hands-on and leadership roles, enjoys team building, solving intricate problems, and making a significant business impact in a dynamic environment.Your Responsibilities:Lead, develop, and mentor a team of developers focused on Product, Production, Product Development, Supply Chain, and corporate functions while fostering a culture of growth, accountability, and technical excellence.Define and implement the technical strategy, architecture, and best practices across systems that support product lifecycle management and business operations.Collaborate with cross-functional teams to ensure the delivery of high-quality technology solutions that drive business objectives.