Senior Frontend Engineer
A5 Talent Finders
Next.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. RequiredTech stack Responsibilities: 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 #J-18808-Ljbffr A5 Talent Finders
- ...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
- ...Our client, a leading innovator in web3 interoperability, is seeking a Senior Front End Engineer to join their dynamic team. They are advancing the state of web3 interoperability by building a universal modular router chain and expanding the network. This is an exciting...SeniorLive in
- Justworks in New York City is seeking a Senior Frontend Engineer to build and scale frontend web apps for both internal and public use. You will collaborate with product and design to deliver on-brand experiences and raise the bar for UI quality. You’ll own implementing...SeniorWork at office
- ***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
- Justworks in New York City is hiring a Senior Software Engineer, Frontend, to build frontend web apps for internal and public use. You will contribute to a highly reliable, modular system and own portions of the user experience. You should have 7+ years in frontend development...Senior
- ...news business. More than half the world’s population sees its journalism every day. Job Summary You will be one of the senior engineers building a new headless front-end for one of the most visited news sites in the world. The team has an aggressive goal of launching...SeniorRemote work
$150k - $250k
...The team includes alumni from Stanford, Harvard, Compound, Meta, Netflix, and more. About the role We're looking for a senior-level frontend engineer with deep React and TypeScript experience to build consumer-facing crypto and payments products. As a Frontend...SeniorRelocationVisa sponsorship$200k - $280k
...class growth and recently raised a $15M Series A led by Footwork Ventures and Y Combinator to accelerate our momentum. As a Senior Frontend Engineer, you will own the design and development of the user-facing experience of the Confido platform. You’ll build intuitive,...SeniorLocal areaRelocation package$180k - $226k
...internet. We’re looking for an enthusiastic, self-motivated frontend engineer to help us build the next generation of financial products. As... ...engineers with minimal day-to-day assistance from more senior engineers or managers Rapidly implement functional UI elements...SeniorFull timeRemote workHome office- ...sounds like you, we’d love you to be part of Gen. About the Role: Engine by Gen partners with leading Financial Institutions to surface... ...reliably. Architect for change: Design and build full-stack, frontend-leaning systems that are intentionally small, composable, and resilient...SeniorContract workFlexible hours
$176k - $242k
..., affordable, and joyful lunch experience that benefits both employees and employers. About The Role We’re looking for a Senior Frontend Engineer to help build and scale Picnic’s real-time logistics and operations platforms. This role is ideal for someone who thrives...SeniorFull timeTemporary workWork at officeLocal areaImmediate startFlexible hours- ...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- Temporal is a research and development firm at the heart of Solana. We are seeking a frontend engineer to design, develop, and maintain high-performance frontend applications for both internal and external use. New York City is strongly preferred, with US remote options...SeniorRemote work
- ...Senior Software Frontend Engineer, Market Pricing Who We Are At Pave, we're building the industry’s leading compensation platform, combining the world's largest real-time compensation dataset with deep expertise in AI and machine learning. Our platform is perfecting...SeniorFlexible hours3 days per week
- Brex is seeking a Senior Frontend Engineer in New York to build and maintain scalable features across the Brex stack. You will work with cross-functional teams to deliver high-quality, client-facing software and drive a data-driven, metrics-oriented approach to product...SeniorRemote job
- A leading DeFi company based in New York is seeking a Senior Frontend Engineer to enhance their financial products. You will be responsible for ensuring a seamless user experience across features while managing significant projects. Ideal candidates will possess extensive...SeniorRemote jobFull time
- Picnic is seeking a Senior Frontend Engineer in New York to build and scale our real-time logistics and operations platforms. You will work across web and mobile, collaborating with backend and operations teams, and shape frontend architecture for high-throughput systems...Senior
- A leading DeFi company is seeking a frontend engineer to enhance their financial products. You will own existing web applications and influence new products, ensuring high-quality user experiences across various platforms. The role is based in New York City with remote...SeniorRemote job
- A5 Talent Finders seeks a Next.js Senior Frontend Engineer for an on-site role in NYC, Monday to Friday. You will design and scale production-grade web apps and AI-driven workflows for high-stakes legal tasks, collaborating with founders, legal experts, and product teams...SeniorMonday to Friday
$130k - $170k
Remote Senior Frontend Engineer Minneapolis, MN • Austin, TX • Charlotte, NC • Irvine, CA • New York, NY Full-TimeRemote$130,000 - $170,000 /yr Posted December 11, 2025 Apply Now Permanently 100% Remote Job Title: Remote Sr Front End Engineer - $130-$170k (React,...SeniorRemote job- 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
$205k - $300k
...the world’s top educational institutions Work together with engineers, scientists, operators, and more from Palantir, Meta, Scale... ...measurably changes how enterprises operate. We're looking for a Senior Frontend Engineer who wants to architect the foundation — not just...SeniorFull timeWork at officeRemote workFlexible hours- ...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
$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$180k - $275k
...learning and development stipend You'll join a talented team of engineers experienced with large-scale applications, helping scale the... ...features regularly. What We\'re Looking For ~5+ years of frontend engineering experience ~ Bonus to have full-stack XP:...SeniorWork at office- Courier Health is seeking a Senior Software Engineer, Frontend in New York City to lead frontend architecture and a growing design system. You’ll shape how patients, clinicians, and researchers interact with our life-sciences engagement platform by building scalable components...SeniorWork at office
$195k - $226k
...QA automation, UI libraries, and shared frontend services. We're product-centric at our core... ...contribute to product and design engineering work alongside our tooling and platform... ...engineering org ship faster. We're looking for a senior engineer who goes deep: someone who can...SeniorFull timeRemote workHome office- Harvey, Inc. is seeking a Software Engineer to join the Product Engineering team and drive cross-stack projects across multiple product lines. You will collaborate with AI, Legal, and GTM teams to build secure, scalable systems that deliver value to customers. You will...SeniorRelocation package
- Profile Software Services busca un Senior Frontend Developer especializado en Angular y TypeScript para un proyecto tecnológico en el sector energético. Te incorporarás al desarrollo y evolución de aplicaciones web corporativas en un entorno moderno, con foco en rendimiento...SeniorRemote job
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