Software Engineer | Propr.xyz at SwissBorg

Software Engineer | Propr.xyz

Location: Remote - Europe Timezone
Department: XBorg – Product
Type: Full-time / Remote

About Propr.xyz

Propr.xyz is building a new Operating System for prop firms, helping them leverage blockchain technology to become more efficient. We enable prop firms to utilize 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 of 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.

How to Apply

We ask candidates to submit their application via a POST request to our API. This helps us identify candidates who read job descriptions carefully and have basic technical skills.

Method: POST
URL: https://propr.xyz/api/hiring/apply
Request body:

{
  "roleSlug": "software-engineer",
  "name": "Your Name",
  "email": "your.email@example.com",
  "link": "https://github.com/yourprofile",
  "coverNote": "Why Propr?",
  "exceptionalNote": "What makes you exceptional?",
  "telegramHandle": "@yourhandle",
  "appUid": "optional-trading-terminal-uid"
}

When applying, mention the word CANDYSHOP to show you read the job post completely.

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.

Software Engineer | Propr.xyz