DeFi Engineer

About Flowdesk At Flowdesk, we are building the infrastructure powering the next era of global finance. As a full-service digital asset trading and technology firm, we provide liquidity solutions, OTC trading, and market infrastructure that connect digital assets to global markets with institutional-grade precision, transparency, and scale. Flowdesk combines expertise from traditional finance, algorithmic trading, and blockchain technology to deliver always-on trading capabilities across the digital asset ecosystem. Founded in 2020, we have grown into a global team supporting institutions, exchanges, and token issuers worldwide as the financial system evolves toward tokenized markets. Why join Flowdesk? You’ll be joining a company operating at the intersection of finance, technology, and crypto - solving complex market problems, building critical infrastructure, and helping shape how digital assets move globally. We move fast, think long term, and work with a strong ownership mindset across engineering, trading, product, operations, and business teams. Mission • 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 Flowdesks systems. Work alongside a seasoned team with deep product, buy‑side, and sell‑side experience in both Crypto and TradFi. Tasks • DeFi Integrations: Collect all necessary on-chain data and integrate with decentralized protocols to power an accurate, real-time back office system. You will be responsible for ensuring management has a comprehensive, up-to-date view of all on-chain assets. This includes owning the full process from requirements analysis, task specification, implementation, to post-production support. • Core Booking / Aggregation: Implement and enhance features in the core booking and aggregation engine (Realised / Unrealised P&L, Balances etc…) ensuring performance, reliability and correctness. • Reconciliation: Automate reconciliation of all trading and treasury activity across the firm implementing data feeds from internal systems, banking, exchanges and custodians. • Reporting: 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. • Data products and APIs: Expose well-versioned APIs and event streams for downstream consumers; maintain backward compatibility and schema evolution. Ways of working • 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. Who You Are You are a problem solver who uses software as a tool to deliver measurable business impact. You enjoy writing and shipping high-quality code, seeing it run in production, and collaborating across teams in a hybrid, cross-location environment. You communicate clearly with stakeholders and care about reliability, security, and compliance. Must Haves - Experience: • Lifecycle knowledge of crypto asset classes: spot, perpetuals, futures, and options (including DeFi implementations) • Experience with trade lifecycle including backoffice and post trade • 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 Must Haves - Technical: • 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 Nice-to-Have - Technical: • Rust and/or Solidity • Integrating with nodes/providers. (e.g. QuickNode) • Time-series/analytical databases (e.g., ClickHouse, BigQuery) • NATS.io • gRPC/Protobuf and high-performance, low-latency services How we work: • Hybrid, cross-time-zone collaboration with clear documentation and async communication • Close partnership with platform/infrastructure teams (cloud and runtime) and IT/end-user teams • Emphasis on secure-by-design, reliable systems and compliance-ready engineering