Job Closed

This listing is no longer active.

Cumberland Labs logo
Cumberland Labs

Early stage blockchain business builder and incubator from Cumberland & DRW

CTO – Technical Lead

Chief Technology OfficerChief Technology OfficerOtherRemoteSeniorTeam 11-50Since 2022H1B No SponsorCompany SiteLinkedIn

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.

Related Categories

Related Job Pages

More Chief Technology Officer Jobs

Cumberland Labs logo

CTO / Technical Lead - Waybridge

Cumberland Labs

Early stage blockchain business builder and incubator from Cumberland & DRW

OtherRemoteTeam 11-50Since 2022H1B No Sponsor

Waybridge, backed by Ergonia, is building an institutional borrow / lend protocol on Canton Network. We have an operational mainnet validator, existing smart contract code, and active counterparty relationships with institutional participants. We are looking for a CTO/Technical Lead to take ownership of the protocol architecture, inherit and evolve our existing codebase from an external dev shop, and build the engineering team as the company scales. The Role This is a co-builder position. You will own the full technical surface of a financial protocol: from DAML smart contracts on a distributed ledger, through the backend settlement and accounting layer, to the institutional-grade frontend dashboards. You are equally comfortable auditing inherited code, designing a new module, and closing a senior engineer hire. The four pillars below define what we need. Responsibilities: 1. Financial System Architecture Waybridge is a financial protocol, not a typical web app. Every data model, state transition, and API must be designed with the rigor of a system that manages real institutional positions. - 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 2. Fullstack Engineering (NestJS + Next.js) Our stack is NestJS on the backend, a Rust indexer for ledger events, and React/Next.js on the frontend. You will inherit an existing codebase from an external dev shop and decide what to keep, refactor, or rebuild. - 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 3. Smart Contract Architecture (DAML / Canton) The protocol layer runs on DAML, a Haskell-based smart contract language on Canton Network. DAML experience is extremely rare and not required, but direct experience is a major plus. What matters is strong functional programming instincts and the ability to ramp quickly. A production Haskell or Scala engineer can be writing DAML in weeks. - 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. 4. Small Team Management You will hire and lead a team of 2-4 engineers. This is not a management-layer role where you delegate and review. You are hands-on, writing code daily, while also recruiting, unblocking, and setting technical direction. - 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

United States
Job Closed
EWOR GmbH logo

Defense Tech Co-Founder / CFO (100 % remote) (m/f/d)

EWOR GmbH

The EWOR Fellowship backs the top tech founders globally with up to €500k and bespoke mentorship by unicorn founders (Adjust, ProGlove, SumUp).

OtherRemoteTeam 201-500

We are looking to hire ambitious entrepreneurs to start and scale their own startups. We are serial entrepreneurs, for example Paul Müller (founder Adjust, €1.2B exit) and Petter Made (founder SumUp, €8B) who are eager to support outlier personalities and serial entrepreneurs to build €1B+ companies. Our offer: - A salary while you build your startup as you will directly be employed by us. Alternatively, you can opt for up to €500k in funding. - 1:1 sparring with unicorn founders on a weekly basis - Community: Access to the top 0.1% of founders, peers and investors - Team building: Hiring top notch talent supported through our network (over 50,000 professionals) - Distribution: Support in reaching product-market-fit and building up a sales force / marketing machine - Funding support for securing a multi-million euro funding round within 12 months (on average, EWOR Fellows raise > €2M after our Grand Pitch) One of our fellows set a record for Europe’s largest pre-seed round by a first-time founder, securing a €12M pre-seed investment. Tasks - You will own, build, and run your startup in fields such as Defense Tech - You will embark on an extensive personal development journey crafted by unicorn founders and follow a fully customised programme enhancing your goal, time, and energy management - You will receive support in hiring through our network to over 50,000 professionals and advice as well as best practices from serial entrepreneurs - You will receive intensive coaching to make your startup ready to raise millions in funding - You will iterate your product with us until having reached product-market-fit and receive support in building up a sales force or creating a marketing engine respectively Requirements - You are based in Europe or the Americas or open to relocate - You are willing to take full responsibility for your own startup and scale it to €100M+ in revenues - You have excellent communication skills in the English language Join us and build a €1B+ company with us!

United States
Job Closed
EWOR GmbH logo

Agentic AI Co-Founder / CPTO (100 % remote) (m/f/d)

EWOR GmbH

The EWOR Fellowship backs the top tech founders globally with up to €500k and bespoke mentorship by unicorn founders (Adjust, ProGlove, SumUp).

OtherRemoteTeam 201-500

We are looking to hire ambitious entrepreneurs to start and scale their own startups. We are serial entrepreneurs, for example Paul Müller (founder Adjust, €1.2B exit) and Petter Made (founder SumUp, €8B) who are eager to support outlier personalities and serial entrepreneurs to build €1B+ companies. Our offer: - A salary while you build your startup as you will directly be employed by us. Alternatively, you can opt for up to €500k in funding. - 1:1 sparring with unicorn founders on a weekly basis - Community: Access to the top 0.1% of founders, peers and investors - Team building: Hiring top notch talent supported through our network (over 50,000 professionals) - Distribution: Support in reaching product-market-fit and building up a sales force / marketing machine - Funding support for securing a multi-million euro funding round within 12 months (on average, EWOR Fellows raise > €2M after our Grand Pitch) One of our fellows set a record for Europe’s largest pre-seed round by a first-time founder, securing a €12M pre-seed investment. Tasks - You will own, build, and run your startup in fields such as Agentic AI - You will embark on an extensive personal development journey crafted by unicorn founders and follow a fully customised programme enhancing your goal, time, and energy management - You will receive support in hiring through our network to over 50,000 professionals and advice as well as best practices from serial entrepreneurs - You will receive intensive coaching to make your startup ready to raise millions in funding - You will iterate your product with us until having reached product-market-fit and receive support in building up a sales force or creating a marketing engine respectively Requirements - You are based in Europe or the Americas or open to relocate - You are willing to take full responsibility for your own startup and scale it to €100M+ in revenues - You have excellent communication skills in the English language Join us and build a €1B+ company with us!

United States
Job Closed
EWOR GmbH logo

MedTech Co-Founder / CPTO (100 % remote) (m/f/d)

EWOR GmbH

The EWOR Fellowship backs the top tech founders globally with up to €500k and bespoke mentorship by unicorn founders (Adjust, ProGlove, SumUp).

OtherRemoteTeam 201-500

We are looking to hire ambitious entrepreneurs to start and scale their own startups. We are serial entrepreneurs, for example Paul Müller (founder Adjust, €1.2B exit) and Petter Made (founder SumUp, €8B) who are eager to support outlier personalities and serial entrepreneurs to build €1B+ companies. Our offer: - A salary while you build your startup as you will directly be employed by us. Alternatively, you can opt for up to €500k in funding. - 1:1 sparring with unicorn founders on a weekly basis - Community: Access to the top 0.1% of founders, peers and investors - Team building: Hiring top notch talent supported through our network (over 50,000 professionals) - Distribution: Support in reaching product-market-fit and building up a sales force / marketing machine - Funding support for securing a multi-million euro funding round within 12 months (on average, EWOR Fellows raise > €2M after our Grand Pitch) One of our fellows set a record for Europe’s largest pre-seed round by a first-time founder, securing a €12M pre-seed investment. Tasks - You will own, build, and run your startup in fields such as MedTech - You will embark on an extensive personal development journey crafted by unicorn founders and follow a fully customised programme enhancing your goal, time, and energy management - You will receive support in hiring through our network to over 50,000 professionals and advice as well as best practices from serial entrepreneurs - You will receive intensive coaching to make your startup ready to raise millions in funding - You will iterate your product with us until having reached product-market-fit and receive support in building up a sales force or creating a marketing engine respectively Requirements - You are based in Europe or the Americas or open to relocate - You are willing to take full responsibility for your own startup and scale it to €100M+ in revenues - You have excellent communication skills in the English language Join us and build a €1B+ company with us!

United States
Job Closed