Senior Frontend Engineer
A5 Talent Finders
Senior Frontend EngineerNext.js Senior Frontend Engineer. Onsite in NYC (M-F)[170K -250K comp + full benefits package + equity]Join a high-growth NYC-based startup as a Frontend Engineer, where you'll design and scale production-grade agents that perform legal tasks with expert-level reasoning. Collaborate closely with founders, legal experts, and the product team to deploy AI systems in high-stakes workflows used by lawyers worldwide.Required Tech stackJavaScript, TypeScript, React, Next.js, ShadCNResponsibilities:Build intuitive and optimized UI/UX using React and TypeScript for workflows integrating reasoning LLMs and agentic architectures.Engage in zero-to-one product development by rapidly prototyping, evaluating, integrating, and testing new product features alongside customers and the legal team.Develop new AI-native workflows by implementing streaming, long-running tasks, procedural UX, etc., balancing state-of-the-art techniques with pragmatism.Required Skills & Experience:4+ years of experience building production-quality frontend applications.Proficiency in TypeScript and Next.js.Proven ability to create polished, intuitive user interfaces with attention to detail.Comfortable working in an early-stage company with a focus on ownership and rapid iteration.Looking For:Candidates with experience building production-quality frontend applications using React and TypeScript, and must be able to provide/talk about examples of projects where you significantly improved UI/UX, including metrics used to measure impact.Individuals who thrive in fast-paced startup environments and have contributed to product development from zero to one.Experience with Next.js and implementing features like streaming or long-running tasks.Willingness to be on-site or relocate if necessary to NYC
- ...many teams build on it without asking you for helpMentor the engineers coming up behind you and set the quality bar in reviewThe Ideal... ...building production web applications, including time somewhere the frontend was the productExpert-level frontend engineering, where strict...SeniorContract work
- ...Partner closely with the founders to influence both product and engineering priorities as an early hire.What You'll DoLead the design and... ...intuitive screens for transactions and account overviews.Set frontend architecture direction, including state handling and live data...SeniorWork at office
- ...Frontend Engineer OpportunityOur systems to support these platforms require very strong frontend engineers to build sophisticated web applications, CRMs, marketplaces, web scrapers, Chrome extensions and more. We are looking for strong, inquisitive engineers with clever...Senior
- ...Engineering Hybrid — New York City, NY or Salt Lake City, UT Full Time Senior Frontend Engineer Own the frontend at Abstract. You'll architect and build the platform's user experience, integrate with AI-powered APIs, and evolve the design system — with direct autonomy...SeniorFull time
- ...technology solutions at the intersection of data, AI, data engineering, and software engineering. We design and build bespoke data... ...remote role, on either a B2B or Permanent basis. The Role: As a Senior Frontend Engineer at Simple Machines, you’ll be at the heart of...SeniorPermanent employmentFull timeRemote work
- ...leading enterprise brands and move fast to bring new partnerships and integrations to life. The role We’re looking for a Senior Frontend Engineer to own and evolve the developer-facing experience of Benji . This role sits at the intersection of: Frontend...SeniorFlexible hours
$160k - $190k
...About the RoleThis isn't a role for "just ship the ticket" engineers. As a Senior Front-End Engineer at Healthie, you'll own front-end architecture... ...well-crafted other engineers will want to copy them.Lead frontend initiatives, mentor engineers, and establish best practices...SeniorFull timeRemote work$152k - $170k
...commitment to positively impacting the community. About the role Sniffies is growing its engineering team in the US, and this is a senior hire into our product engineering team. As Senior Frontend Engineer, you will build the user-facing product on a platform with around 3...SeniorRemote work$180k - $200k
...Senior Frontend EngineerWe're hiring a Senior Frontend Engineer to build the interfaces our customers and experts use every day. You'll spend most of your time on our core product, and you'll also help shape our marketing site.You'll have real influence over how the product...SeniorWork at officeRemote work- ...About the Role We are looking for a Senior Frontend Engineer who wants to own the web surfaces that members and operators interact with every day. This is a senior individual contributor role ideal for someone with 3 to 5+ years of experience who cares deeply about...SeniorInterim role
$160k - $180k
...re a galaxy-class team of researchers, clinicians, designers, engineers, storytellers, and builders—each aligned in our belief in the... ...looking to shape the future of health, join us. As a Senior Frontend Engineer, you lead the frontend implementation of Seed's digital...SeniorFull timeFor contractorsSummer workRemote work- Polarscope Agency is seeking an experienced Senior Developer to shape complex features across multiple projects. You will architect scalable... ..., and collaborate with design and back-end teams to realize frontend goals. You will mentor peers, review code, and help grow junior...Senior
- ***MUST COME FROM A STARTUP*** Our client is looking for a Senior/Staff Frontend Engineer to join us as we continue to build our products and infrastructure. In this role, you will be instrumental in building out the Advisor Experience of our platform. In collaboration...SeniorFull time
- Senior Frontend EngineerLocation: EU/UK (Remote)At Makersite, we're pioneering the future of sustainable product development and digital... ...Product Collaboration: Work closely with the Product Owner and engineering team to translate product requirements and domain logic into...SeniorPermanent employmentContract workRemote work
- Job Description Job Description JOB DESCRIPTION You've built front-ends before - but never quite like this. If you share our passion for taking the browser further than ever toward a native-feeling experience, all while advancing maintainable code standards - come...Senior
$175k - $290k
...new sponsors Tech Stack: React, React Native, TypeScript, GraphQL, WebSockets, SSE, REST APIs We are looking for a Senior Frontend Engineer with 3+ years of experience to build and scale real-time logistics and operations platforms. You'll work across web and mobile...Senior- ...technical strategy and held accountable for delivering outcomes, not just plans or implementationWhat You'll Bring5+ years of frontend engineering experienceYou have empathy for compensation teams and understand the challenges involved in pricing an employees’ payStrong...SeniorFlexible hours
$250k - $350k
...Senior Frontend/UI Software Engineer (Quant Trading) Salary: $250k-350k Total compensation: ranging $400k-750k depending on performance and seniority A leading quantitative trading firm is hiring a Senior Frontend/UI Software Engineer to join a small, highly skilled...SeniorFull time- Beyond Sports is seeking a Senior Frontend Engineer (Contractor/Freelance) based in Hungary for a 3-month engagement. You will build responsive frontend solutions using React, vanilla JavaScript, and modern UI practices, delivering high-quality code and collaborating with...SeniorRemote jobDaily paidContract workFor contractorsFreelance
- Justworks in New York City is seeking a Senior Software Engineer, Frontend to join our Frontend Engineering team. You will build customer-facing web apps using JavaScript/TypeScript, focusing on performance and security while delivering high-fidelity UI. Requires 7+ years...Senior
- Working remotely on a freelance basis, the Senior Frontend Engineer will build, maintain, and optimize pipelines for migrating developer documentation while recreating front-end UI components using Angular and managing continuous development and DevOps pipeline flows....SeniorFreelanceRemote work
- Mammoth Brands is seeking a senior Software Engineer to join the Lume storefront team. You will own moderately complex areas of the headless Shopify architecture, drive technical direction, and deliver end-to-end solutions on a small, high-leverage team. You will work...Senior
- Watershed, the enterprise sustainability platform, is seeking a senior frontend engineer to drive UI/UX for our complex applications. You will own frontend architecture, mentor teammates, and partner with design to deliver clear, accessible experiences. This role emphasizes...SeniorWork at officeRemote work
- ...decisions make the advantage. About the Role You thrive where clean UI execution meets real-world impact. As a Senior Frontend Software Engineer , you build self-contained, reusable, task-focused components and approach UI development with a balance of speed, quality...SeniorFull timeLocal area
- ...work on complex financial platforms that manage high-volume datasets, advanced grid interactions, and role-based workflows. This is a senior-level opportunity to contribute to architecture decisions, improve usability, and drive UI excellence.What You’ll TackleBuild...Senior
$230k
...Senior Frontend Engineer | REMOTE | Up to $230K + Equity I’m working with a fast-growing, highly profitable fintech company that is building a premium financial product for a sophisticated customer base. They’re looking for a Senior Frontend Engineer to help take...SeniorRemote work- ...Role SummaryYou'll be a high-output engineer building mission-critical operator experiences — implementing complex, high-performance interfaces... ...with speed and precision. You'll contribute meaningfully to frontend architecture and design decisions, own significant features end...SeniorFull timeContract workFlexible hours
$225k
...Senior Frontend Engineer required for a well-funded AI healthcare startup building new-gen patient-facing software. Built consumer products at a startup? Passionate about creating exceptional user experiences? This could be an opportunity to apply those skills to...SeniorPermanent employmentFull time- ...As a Software Engineer, you will be a part of our Frontend Engineering team, focusing on delivering products and capabilities that power Justworks products You will leverage your experience working with customer-facing applications and design with performance and security...SeniorApprenticeshipWork from home
- ...applications, as well as mobile and web development. The projects we work on literally change the world. We are looking for a Senior UI/Frontend Engineer: As a Senior UI/Frontend Engineer with 100% focus on frontend development, you will work with lead-level and fellow...SeniorFull time
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Senior Frontend Engineer. Be the first to apply!
- front end engineer New York, NY
- entry level front end web developer New York, NY
- front end developer internship remote New York, NY
- senior frontend developer New York, NY
- frontend engineer New York, NY
- frontend developer New York, NY
- front end web developer part time New York, NY
- front end developer full time New York, NY
- remote frontend developer New York, NY
- react front end developer New York, NY




