Frontend Engineer - Real-Time Trading UI (Equity Eligible)

Onyxodds; New York (NY); On-site; USD 150,000 - 200,000; Full time

Benefits offered by this job

Equity ownership

Bonus potential

Health, dental, vision insurance

Job summary

Onyx in New York is seeking a Frontend Software Engineer to build the interfaces customers use to discover markets, take positions, and follow live events. The frontend stack is TypeScript and React, supported by Node.js, PostgreSQL, AWS, and real-time data systems.

You’ll own important product areas from concept through production for a growing customer base. You’ll collaborate with product, design, backend engineering, data, and trading to turn complex market mechanics into fast, clear

Qualifications

• 3+ years of professional frontend or full-stack engineering experience.
• Proficiency in TypeScript, React, HTML, and CSS.
• Experience building customer-facing production applications.
• Understanding frontend architecture, state management, data fetching, testing, and performance.
• Experience with APIs, real-time data, authentication, and third-party SDKs.
• Build responsive, accessible interfaces with strong attention to detail.
• Independently own complex features from idea through production.
• Move quickly while maintaining a high bar for quality and customer experience.

Responsibilities

• Build and ship customer-facing web experiences using TypeScript and React.
• Develop intuitive experiences across market discovery, trading, positions, balances, payments, and settlement.
• Build responsive interfaces powered by live prices, market updates, and real-time activity.
• Own features from technical design through testing, release, monitoring, and iteration.
• Translate complex trading concepts into simple, engaging product experiences.
• Build reusable components and contribute to a scalable design system.
• Establish frontend architecture and engineering patterns that support rapid development.
• Integrate APIs, authentication, payments, analytics, and third-party services.
• Improve performance, accessibility, reliability, testing, and deployment.

Skills

TypeScript

React

HTML/CSS

APIs

Real-time data

Ownership of features

Performance optimization

Frontend architecture

WebSockets

Next.js

Node.js

Tools

Next.js

WebSockets

Node.js

Job description

Onyx in New York is seeking a Frontend Software Engineer to build the interfaces customers use to discover markets, take positions, and follow live events. The frontend stack is TypeScript and React, supported by Node.js, PostgreSQL, AWS, and real-time data systems.

You’ll own important product areas from concept through production for a growing customer base. You’ll collaborate with product, design, backend engineering, data, and trading to turn complex market mechanics into fast, clear