Senior Full-Stack Engineer

Chatoly Assistant; United States; Remote; USD 120,000 - 160,000; Full time

Job summary

Chatoly Assistant is seeking a seasoned frontend engineer to own features end-to-end—from schema design to production measurement. You will work across dashboards and public-facing surfaces, collaborating with customers to translate needs into robust React/Next.js solutions.

You will maintain strong typing, write meaningful tests, and document decisions to keep the codebase clear for the next engineer to extend.

Qualifications

• Five+ years building production web applications.
• Strong practical experience with TypeScript.
• Solid React and Next.js skills, incl. Next.js App Router judgment.
• Comfort designing relational data models and the APIs that support them.
• Track record of owning features from problem to measured launch.
• Clear written communication for decisions and collaboration.

Responsibilities

• Deliver end-to-end features using TypeScript, React, and Next.js, from schema design to interaction details.
• Build workspace tools for managing knowledge sources, reviewing conversations, and configuring handoff rules.
• Engage directly with customers to understand problems before translating them into product work.
• Maintain strong types, useful tests, and accurate documentation as the product evolves.
• Review code and document the reasoning and trade-offs behind durable technical decisions.
• Take ambiguous problems through implementation, release, and measurement of results.

Skills

TypeScript

React

Next.js

Relational data modeling

Documentation & testing

Tools

Next.js

React

TypeScript tooling

Job description

Role overview

Own product features from the underlying data model through the user interface and into production measurement. You will work across a dashboard and public-facing product surfaces, partnering directly with customers to solve practical problems while keeping the codebase clear, tested, and easy for the next engineer to extend.

Responsibilities

• Deliver end-to-end features using TypeScript, React, and Next.js, from schema design to interaction details.
• Build workspace tools for managing knowledge sources, reviewing flagged conversations, and configuring handoff rules.
• Engage directly with customers to understand problems before translating them into product work.
• Maintain strong types, useful tests, and accurate documentation as the product evolves.
• Review code and document the reasoning and trade-offs behind durable technical decisions.
• Take ambiguous problems through implementation, release, and measurement of results.

Requirements

• At least five years of experience building production web applications.
• Deep practical experience with TypeScript.
• Strong React and Next.js skills, including sound judgment about the Next.js App Router.
• Comfort designing relational data models and the APIs that support them.
• A track record of owning features from an unclear initial problem through a measured launch.
• Clear written communication for decisions, documentation, and collaboration.

Nice to have

• Experience with multi-tenant SaaS and the isolation challenges it creates.
• Experience building an embeddable widget or integrating a third-party script.
• Familiarity with retrieval, evaluation, prompt versioning, or other LLM application patterns.