Software Engineer | Propr.xyz
Core
Design and implement backend services for a new Operating System enabling prop firms to leverage blockchain technology for perpetual futures, prediction markets, and spot assets.
Role type
Senior backend engineer (trading infrastructure)
Builds
Real-time trading infrastructure, client-facing APIs, and React/Next.js features for prop firms
Domain
Fintech, Blockchain, Cryptocurrency exchanges
Deliverable
production ML models | product features
Required skills
TypeScript, Node.js (NestJS), SQL, TypeORM, distributed systems, transaction management, arbitrary precision decimal arithmetic, React/Next.js, AWS (ECS, Aurora, ElastiCache), Terraform, Monorepo tooling (Turborepo, Nx), integration testing
Preferred skills
Event sourcing, crypto exchange experience, major exchange API integration (REST + WebSocket), KYC/compliance workflows
Technologies
Hyperliquid, NestJS, TypeORM, React, Next.js, AWS, Terraform, Turborepo, Nx
Responsibilities
Design and implement backend services across the trading domain; Own features end to end including schema, API, tests, and UI integration; Contribute to real-time infrastructure and client-facing APIs; Write integration tests against real dependencies; Ship React/Next.js features to completion
Seniority
Senior, hands-on IC (via careerplan.io/jobs/13814-software-engineer-proprxyz-at-swissborg)