Software Engineer
Propr is an onchain prop trading firm that funds traders with its own capital to trade crypto, equity, commodity and forex perpetuals as well as prediction markets. Traders who pass a funded challenge keep 80% of profits, with instant USDC payouts and transparent, publicly trackable execution. Propr serves individual traders as well as AI agents and algorithmic trading systems via a public API, and also offers a funding layer that other trading apps can integrate.
Funding
Projects
About Propr
Propr describes itself as the onchain prop trading firm, funding traders with its own capital to trade 150+ markets, including Hyperliquid perpetuals (crypto, equities, commodities, forex) and Polymarket prediction markets. Traders pay a one-time fee to complete a challenge by hitting a profit target within daily loss and drawdown limits, then get verified via a one-time KYC to become funded and keep 80% of profits, with instant on-demand USDC payouts settled onchain and publicly trackable with transaction hashes. The platform emphasizes radical transparency, publishing real-time trading, payout and revenue data, and is built to be agent-friendly, offering a REST API and Python/JS SDKs so AI agents and algorithmic traders can access funded capital in minutes. Propr also positions itself as a funding layer that other trading apps can integrate, giving their users native funded challenge accounts, particularly for products already built on Hyperliquid and Polymarket. It does not serve traders in the US, UK, Russia, or OFAC-sanctioned regions.
Skills
About the Role
You will design and implement backend services across the trading domain. You will own features end to end, covering schema design, API development, testing, and UI integration. You will contribute to real time infrastructure and client facing APIs, and write integration tests against real dependencies to ensure reliability across the platform.
Requirements
- 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
Benefits
- Relocation offered