Onsite Core Engineer – DeFi

Posted last month

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About the role

  • Be a key player in the newly formed Core Engineering team at Flowdesk to build a world class back office system which will serve as the backbone for Flowdesk's systems.
  • Collect all necessary on-chain data and integrate with decentralized protocols to power an accurate, real-time back office system.
  • Own the full process from requirements analysis, task specification, implementation, to post-production support for DeFi integrations.
  • Implement and enhance features in the core booking and aggregation engine (Realised / Unrealised P&L, Balances etc) ensuring performance, reliability and correctness.
  • Automate reconciliation of all trading and treasury activity across the firm implementing data feeds from internal systems, banking, exchanges and custodians.
  • Work closely with the Finance and other internal users to gather and refine requirements, plan milestones, demo progress, and coordinate cutovers from manual / legacy workflows.
  • Expose well-versioned APIs and event streams for downstream consumers; maintain backward compatibility and schema evolution.
  • Follow established architecture and coding standards; participate in RFCs/design reviews and propose incremental improvements within existing patterns.
  • Write clean, well-documented code and meaningful tests.
  • Contribute to PR reviews; maintain up-to-date technical docs and diagrams.
  • Own components end-to-end from spec to production support.

Requirements

  • Lifecycle knowledge of crypto asset classes: spot, perpetuals, futures, and options (including DeFi implementations).
  • Hands-on integration with Defi protocols (DEX/AMM, lending, derivatives) such as Uniswap v3, Curve, Aave.
  • Proven track record delivering scalable, reliable systems in production.
  • Comfortable partnering with internal stakeholders across Trading, Ops, Compliance, and Engineering.
  • Strong OO background in one or more, Go, C++, C#, Java or Rust.
  • Experience with Typescript and Python.
  • API design (versioning, backwards compatibility, observability)
  • Postgres schema design and query optimization.
  • Experience with message queue / pub-sub systems.
  • Familiarity with cloud environments (GCP, AWS, Azure), modern CI/CD and containerization.
  • Nice-to-Haves - Experience
  • Built or maintained position-keeping / accounting systems (PnL, accounting methods, pricing, greeks).
  • Centralized reference data platforms (assets, networks, instruments), consistent symbology and instrument economics.
  • Trading, risk, or back-office systems, ideally in regulated environments.

Benefits

  • International environment (English is the main language)
  • Pension
  • 100% health coverage
  • Team events and offsites

Job title

Core Engineer – DeFi

Job type

Experience level

Mid levelSenior

Salary

Not specified

Degree requirement

No Education Requirement

Location requirements

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