Feeny
SwissBorg

Software Engineer | Propr.xyz at SwissBorg (Europe)

SwissBorg· Europe·

Role details

Work type
Remote
Employment
Full-Time

Job description

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.

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.

POST

propr.xyz/apply

Request body:

{ "roleSlug": "software-engineer", "name": "Your Name", "email": "your@email.com", "link": "github.com/yourprofile%22, "coverNote": "Why Propr?", "exceptionalNote": "What makes you exceptional?", "telegramHandle": "@yourhandle", "appUid": "optional-trading-terminal-uid" }

Why work at SwissBorg

  • Culture & Mission: Very strong mission-driven culture focused on "democratising wealth" and "financial freedom." Employees are generally passionate about crypto and fintech disruption.
  • Remote-First Environment: They operate a "remote-first" policy, hiring across the majority of European countries. You can choose to work from their offices in Lausanne or Tallinn, or work fully remotely from home.
  • Flexibility & Perks:
    • Flexible working environment (you choose where you are most effective).
    • 25 days holiday plus local bank holidays.
    • Learning & Development budget for personal growth.
    • BORG Annual Bonus (paid in the company's native token).
    • Free Diamond Rank for employees (effectively gives you the highest tier of trading benefits and cashback for free).
  • Diversity & Inclusion: The company explicitly states a goal of being a "truly inclusive environment" and employs people from "25+ different nationalities."
  • Engineering Culture: Modern stack (implied by their need for Software Engineers, Quant, and Risk roles). They use a "Proof of Liabilities" tool and MPC keyless technology for security, indicating high engineering standards.
  • Interview Process: Ranges from 2-4 weeks; starts with a Talent team screen.

Application questions