Senior Frontend Engineer

A5 Talent Finders; New York (NY); On-site; USD 170,000 - 250,000; Full time

Benefits offered by this job

Full benefits package

Equity

Job summary

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.

Equity and full benefits accompany a competitive comp band. Required: 4+ years building frontend apps, strong TypeScript and Next.js, polished UI/UX, and comfort in fast-moving startups with ownership.

Qualifications

• 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.

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.

Skills

TypeScript

Next.js

UI/UX

Frontend development

Startup experience

Tools

React

Job description

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