Senior Frontend Engineer (Next.js) — NYC AI UI

A5 Talent Finders

New York (NY)

On-site

USD 170,000 - 250,000

Full time

14 days+

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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.