Senior Frontend Engineer, Conversational & Gen UI

Farther Finance, LLC; New York (NY); On-site; USD 140,000 - 190,000; Full time

Job summary

Jobtailor in New York is seeking a senior frontend engineer to drive production web apps and AI-enabled interfaces. You will own the frontend from prototype through production, shaping APIs and developer tooling.

You will collaborate across teams, mentor engineers, and ensure rigorous testing and quality, with a focus on LLM-enabled tool calling and robust user experiences.

Qualifications

• 6+ years building production web applications.
• Expert-level frontend engineering with strict typing.
• Production experience with LLMs, including agentic systems, tool calling, streaming responses, and conversational interfaces
• Composition over configuration; modular, scalable frontend patterns.
• Distributed systems fundamentals: timeouts, retries, idempotency, and failure isolation.
• Genuine product instincts and ability to raise ambiguity as a decision.
• Fluent in an AI-assisted development loop using Claude Code, Git-based PRs, and automated review.
• End-to-end ownership and a track record of meeting deadlines.
• Strong knowledge-sharing and documentation habits.
• Comfortable context-switching across multiple concurrent workstreams.
• Experience with React, TypeScript, Python, TanStack Query, react-hook-form, Zod, Tailwind, CSS, Testing Library, ESLint, Prettier, and GitHub Actions CI.

Responsibilities

• Deliver the assistant experience from prototype to production
• Build the framework enabling Farther surfaces to declare what the agent can do and see
• Design a renderer that turns model output into a validated, submittable interface
• Make the renderer extensible so new input types are additive rather than requiring refactors
• Negotiate and version the wire contract with the agent backend team
• Enforce the wire contract with tests
• Design and document developer-facing APIs
• Mentor engineers and set the quality bar in code review

Skills

Expert Frontend Engineering

LLMs & Agentic Systems

React & TypeScript

End-to-End Ownership

Mentorship & Code Review

Testing & Quality

Developer APIs

Documentation

Strong Communication

Product Instincts

Tools

React

TypeScript

Python

TanStack Query

react-hook-form

Zod

Tailwind

CSS

Testing Library

ESLint

Prettier

GitHub Actions CI

Job description

• Deliver the assistant experience from prototype to production
• Build the framework enabling Farther surfaces to declare what the agent can do and see
• Design a renderer that turns model output into a validated, submittable interface
• Make the renderer extensible so new input types are additive rather than requiring refactors
• Negotiate and version the wire contract with the agent backend team
• Enforce the wire contract with tests
• Design and document developer-facing APIs
• Mentor engineers and set the quality bar in code review

Requirements

• 6+ years building production web applications, including time somewhere the frontend was the product
• Expert-level frontend engineering; strict typing is how you already work
• Production experience with LLMs, including agentic systems, tool calling, streaming responses, and conversational interfaces
• Composition over configuration; modular, scalable frontend patterns
• Distributed systems fundamentals: timeouts, retries, idempotency, and failure isolation
• Genuine product instincts and ability to raise ambiguity as a decision
• Fluent in an AI-assisted development loop using Claude Code, Git-based PRs, and automated review
• End-to-end ownership and a track record of meeting deadlines
• Strong knowledge-sharing and documentation habits
• Comfortable context-switching across multiple concurrent workstreams
• Experience with React, TypeScript, Python, TanStack Query, react-hook-form, Zod, Tailwind, CSS, Testing Library, ESLint, Prettier, and GitHub Actions CI

Core Competencies

Demonstrates expert-level Frontend Engineering skills with a focus on building production web applications and designing developer-facing APIs. Proficient in managing distributed systems and ensuring high-quality code through mentorship and rigorous testing practices.

Highest-signal resume keywords

• Expert-Level Frontend Engineering
• Production Experience with LLMs
• React and TypeScript Proficiency
• End-to-End Ownership
• Strong Knowledge-Sharing Habits

ATS Optimization Keywords

Hard Skills

• Frontend Engineering
• Production Web Applications
• Strict Typing
• Modular Frontend Patterns
• Distributed Systems Fundamentals
• Developer-Facing APIs
• Code Review
• Testing Practices
• Composition Over Configuration
• Context-Switching

Soft Skills

• Genuine Product Instincts
• Ability to Raise Ambiguity
• Strong Communication
• Mentorship

Industry Keywords

• LLMs
• Agentic Systems
• Tool Calling
• Streaming Responses
• Conversational Interfaces

Tools & Technologies

• React
• TypeScript
• Python
• TanStack Query
• React-Hook-Form
• Zod
• Tailwind
• CSS
• Testing Library
• GitHub Actions CI