Senior Backend Engineer - Real-Time Trading Platforms

United States Digital Space LLC; United States; Remote; USD 140,000 - 200,000; Full time

Job summary

Propr.xyz is building a cutting-edge trading OS to empower prop firms with blockchain-enabled workflows. We seek an experienced backend engineer to design scalable services and own features end-to-end, from schema to UI integration.

You will work with a modern Node.js stack (NestJS preferred) and strong TypeScript, contributing to real-time infrastructure, integration tests, and reliable API design for high-volume trading environments. This role is full-time in the US.

Qualifications

• 5+ years production backend experience.
• Strong TypeScript or other strongly typed language background.
• Experience with trading systems, financial infrastructure, or exchange adjacent domains.
• Distributed system and transaction knowledge.
• Modern Node.js backend framework (NestJS preferred; Spring / FastAPI / similar acceptable).
• SQL and a production ORM (preferably TypeORM).
• Arbitrary precision decimal arithmetic in financial contexts.
• Integration first testing discipline.
• Able to ship React / Next.js features to completion.

Responsibilities

• Design and implement backend services across the trading domain.
• Own features end to end: schema, API, tests, UI integration.
• Contribute to real time infrastructure and client facing APIs.
• Write integration tests against real dependencies.

Skills

Backend

TypeScript

Trading systems

Distributed systems

Node.js

SQL

TypeORM

Precision arithmetic

Integration testing

Frontend integration

Tools

NestJS

Spring

FastAPI

TypeORM

WebSocket

REST API

Job description

Propr.xyz is building a cutting-edge trading OS to empower prop firms with blockchain-enabled workflows. We seek an experienced backend engineer to design scalable services and own features end-to-end, from schema to UI integration.

You will work with a modern Node.js stack (NestJS preferred) and strong TypeScript, contributing to real-time infrastructure, integration tests, and reliable API design for high-volume trading environments. This role is full-time in the US.