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Open nowPosted 155 days ago

Software Engineer | Propr.xyz

swissborg3 open roles

Where
Remote - Europe Timezone
Work mode
Remote
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Your applicationOpen nowSoftware Engineer | Propr.xyzswissborg · Remote - Europe Timezone

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Share of postings closed within
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  2. 3.4%3 days
  3. 7.8%7 days
  4. 14.3%14 days
  5. 33.7%30 days
This job: posted 155 days ago

The posting

Propr.xyz is building a new Operating System for prop firms, helping them leverage blockchain technology to make them more efficient. We enable prop firms to leverage perpetual futures on Hyperliquid, prediction markets, and spot assets. We are actively deploying our technologies to the largest prop firms in the world. The pace is intense, but the journey is exciting. We only hire A-players. You need to be exceptional.

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.

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.

Bonus

  • Event sourcing experience.
  • Crypto exchange experience.
  • Direct experience with major exchange APIs (REST + WebSocket).
  • AWS (ECS, Aurora, ElastiCache etc.), Terraform.
  • Monorepo tooling (Turborepo, Nx).
  • KYC / compliance workflows.
  • Crypto native.

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