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Early stage blockchain business builder and incubator from Cumberland & DRW
CTO – Technical Lead
Location
United States
Posted
92 days ago
Salary
0
Seniority
Senior
Job Description
CTO – Technical Lead
Cumberland Labs
• Design and own the position lifecycle engine: origination, funding, accrual, partial repayment, recall, and closure • Architect a shared accounting layer that serves multiple lending modules • Model settlement flows, collateral custody, yield attribution, and reconciliation for bilateral agreements • Ensure correctness guarantees throughout: idempotency, audit trails, and immutable state history • Audit the inherited backend and frontend codebase; determine the refactor-vs-rewrite strategy • Own the backend services layer: RESTful APIs, settlement engine, accounting services, WebSocket feeds • Extend and optimize the Rust indexer for new on-chain event types • Guide frontend architecture for data-dense institutional dashboards (portfolio views, real-time position tracking, yield analytics) • Establish CI/CD, testing standards, and code quality practices across the full stack • Lead DAML smart contract design for lending and staking modules • Define on-chain vs. off-chain boundaries: what the smart contract enforces vs. what the backend handles • Collaborate with Canton ecosystem partners on staking protocol design and network-level integration • Bring strong functional programming depth (Haskell, Scala) and apply it to contract modeling, type safety, and state machine correctness. • Hire a Senior Backend Engineer and a Senior Frontend Engineer in the first 4-6 weeks • Manage knowledge transfer from the existing external dev shop to your in-house team • Run sprint planning and translate product requirements into engineering execution • Partner directly with the CEO on product-to-engineering decisions, sequencing, and tradeoffs
Job Requirements
- 8+ years in fullstack or backend engineering, with at least 2-3 years in a technical lead or architect role
- Production functional programming experience (Haskell, Scala, OCaml, or equivalent)
- Background in financial services, fintech, or high-growth startups building systems with correctness requirements
- Hands-on with TypeScript/NestJS or Rust; comfortable owning both backend and frontend
- Experience hiring and managing small, growing engineering teams
- Smart contract or distributed ledger experience (any chain) is a strong plus
- Passionate about building from zero to one. You thrive in early-stage environments where speed, ownership, and resourcefulness matter more than process and hierarchy.
Benefits
- Co-founder energy: Meaningful equity with full architecture ownership from day one
- Real and operational: Live mainnet validator, existing code, active counterparty relationships - this is not a whiteboard project
- Canton ecosystem: Backed by Ergonia with access to Canton ecosystem resources and partners
- Institutional demand: Counterparties are ready. You are building for real users, not hypothetical ones
- Lean team, high leverage: Every architectural decision you make defines the protocol
- Competitive salary and benefits
- Equity with long-term upside aligned to the success of Waybridge.
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CTO / Technical Lead - Waybridge
Cumberland LabsEarly stage blockchain business builder and incubator from Cumberland & DRW
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