Full-Stack Engineer - Real-Time Trading Platform

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

Job summary

Onyx is hiring a Full-Stack Software Engineer in NoHo, Manhattan, to build customer trading experiences and backend financial infrastructure. You will own projects from idea through production, working with product, design, trading, and operations. Expect to ship features across web and mobile with a fast-moving team.

The stack centers on TypeScript, React, React Native, Node.js, PostgreSQL, and AWS. You’ll craft scalable APIs, real-time services, and reliable infrastructure while maintaining a

Qualifications

• 3+ years of professional software engineering experience.
• Proficiency in TypeScript, React, and Node.js.
• Built and maintained production applications across the stack.
• Understanding of relational databases, transactions, concurrency, and data consistency.
• Production experience with PostgreSQL and AWS.
• Comfort building real-time, concurrent, or event-driven systems.
• Ability to move between frontend, backend, and infrastructure based on product needs.
• Independently lead technical projects from planning through production.
• Move quickly while maintaining a high bar for quality, reliability, and customer experience.

Responsibilities

• Build and ship full-stack product features using TypeScript, React, and Node.js.
• Develop customer-facing trading experiences across web and mobile.
• Build backend services supporting markets, orders, execution, positions, balances, and settlement.
• Design reliable APIs, real-time systems, and scalable PostgreSQL workflows.
• Build and maintain production infrastructure in AWS.
• Integrate with exchanges, liquidity providers, payment systems, and financial partners.
• Improve system performance, observability, reliability, and fault tolerance.
• Partner with product, design, trading, and operations from concept through launch.
• Make consequential technical decisions and own the outcomes.

Skills

TypeScript

React

Node.js

AWS

Real-time systems

Frontend backend infra

Job description

Onyx is hiring a Full-Stack Software Engineer in NoHo, Manhattan, to build customer trading experiences and backend financial infrastructure. You will own projects from idea through production, working with product, design, trading, and operations. Expect to ship features across web and mobile with a fast-moving team.

The stack centers on TypeScript, React, React Native, Node.js, PostgreSQL, and AWS. You’ll craft scalable APIs, real-time services, and reliable infrastructure while maintaining a