in Python, including async/await and scalable system design Knowledge of DeFi and blockchain (AMMs, MEV, liquidations, smart contracts) Experience with distributed systems and microservices Ability to read Solidity and understand on-chain logic Based in or willing to relocate to London +44 3300 522 127 sean@cwtalentsolutions.com More ❯
/off-ramps, networks, compliance vendors). Contribute to smart contracts that power real financial operations (escrow, payouts, invoicing, treasury automation). Work with modern blockchain dev stacks: Ethereum, Solidity, Truffle/Hardhat, L1/L2 frameworks (Arbitrum, Base, Polygon, Optimism, etc.) Design hybrid Web2 Web3 architectures connecting Deel's ledger, banking rails, and chain-based flows. Must Have Professional … limiting, event/queue-driven architectures. Experience in compliance-sensitive environments (KYC, AML, transaction monitoring). 4+ years of backend or full-stack engineering experience. Bonus Points Experience with Solidity, smart contracts, Truffle/Hardhat, EVM development, or L1/L2 scaling frameworks. Built or integrated custodial wallets, exchanges, or on/off-ramp processes. Experience with treasury, FX, reconciliation More ❯
/off-ramps, networks, compliance vendors). Contribute to smart contracts that power real financial operations (escrow, payouts, invoicing, treasury automation). Work with modern blockchain dev stacks: Ethereum, Solidity, Truffle/Hardhat, L1/L2 frameworks (Arbitrum, Base, Polygon, Optimism, etc.) Design hybrid Web2 Web3 architectures connecting Deel's ledger, banking rails, and chain-based flows. Must Have Professional … limiting, event/queue-driven architectures. Experience in compliance-sensitive environments (KYC, AML, transaction monitoring). 4+ years of backend or full-stack engineering experience. Bonus Points Experience with Solidity, smart contracts, Truffle/Hardhat, EVM development, or L1/L2 scaling frameworks. Built or integrated custodial wallets, exchanges, or on/off-ramp processes. Experience with treasury, FX, reconciliation More ❯
/off-ramps, networks, compliance vendors). Contribute to smart contracts that power real financial operations (escrow, payouts, invoicing, treasury automation). Work with modern blockchain dev stacks: Ethereum, Solidity, Truffle/Hardhat, L1/L2 frameworks (Arbitrum, Base, Polygon, Optimism, etc.) Design hybrid Web2 Web3 architectures connecting Deel's ledger, banking rails, and chain-based flows. Must Have Professional … limiting, event/queue-driven architectures. Experience in compliance-sensitive environments (KYC, AML, transaction monitoring). 4+ years of backend or full-stack engineering experience. Bonus Points Experience with Solidity, smart contracts, Truffle/Hardhat, EVM development, or L1/L2 scaling frameworks. Built or integrated custodial wallets, exchanges, or on/off-ramp processes. Experience with treasury, FX, reconciliation More ❯
/off-ramps, networks, compliance vendors). Contribute to smart contracts that power real financial operations (escrow, payouts, invoicing, treasury automation). Work with modern blockchain dev stacks: Ethereum, Solidity, Truffle/Hardhat, L1/L2 frameworks (Arbitrum, Base, Polygon, Optimism, etc.) Design hybrid Web2 Web3 architectures connecting Deel's ledger, banking rails, and chain-based flows. Must Have Professional … limiting, event/queue-driven architectures. Experience in compliance-sensitive environments (KYC, AML, transaction monitoring). 4+ years of backend or full-stack engineering experience. Bonus Points Experience with Solidity, smart contracts, Truffle/Hardhat, EVM development, or L1/L2 scaling frameworks. Built or integrated custodial wallets, exchanges, or on/off-ramp processes. Experience with treasury, FX, reconciliation More ❯
/off-ramps, networks, compliance vendors). Contribute to smart contracts that power real financial operations (escrow, payouts, invoicing, treasury automation). Work with modern blockchain dev stacks: Ethereum, Solidity, Truffle/Hardhat, L1/L2 frameworks (Arbitrum, Base, Polygon, Optimism, etc.) Design hybrid Web2 Web3 architectures connecting Deel's ledger, banking rails, and chain-based flows. Must Have Professional … limiting, event/queue-driven architectures. Experience in compliance-sensitive environments (KYC, AML, transaction monitoring). 4+ years of backend or full-stack engineering experience. Bonus Points Experience with Solidity, smart contracts, Truffle/Hardhat, EVM development, or L1/L2 scaling frameworks. Built or integrated custodial wallets, exchanges, or on/off-ramp processes. Experience with treasury, FX, reconciliation More ❯
/off-ramps, networks, compliance vendors). Contribute to smart contracts that power real financial operations (escrow, payouts, invoicing, treasury automation). Work with modern blockchain dev stacks: Ethereum, Solidity, Truffle/Hardhat, L1/L2 frameworks (Arbitrum, Base, Polygon, Optimism, etc.) Design hybrid Web2 Web3 architectures connecting Deel's ledger, banking rails, and chain-based flows. Must Have Professional … limiting, event/queue-driven architectures. Experience in compliance-sensitive environments (KYC, AML, transaction monitoring). 4+ years of backend or full-stack engineering experience. Bonus Points Experience with Solidity, smart contracts, Truffle/Hardhat, EVM development, or L1/L2 scaling frameworks. Built or integrated custodial wallets, exchanges, or on/off-ramp processes. Experience with treasury, FX, reconciliation More ❯
/off-ramps, networks, compliance vendors). Contribute to smart contracts that power real financial operations (escrow, payouts, invoicing, treasury automation). Work with modern blockchain dev stacks: Ethereum, Solidity, Truffle/Hardhat, L1/L2 frameworks (Arbitrum, Base, Polygon, Optimism, etc.) Design hybrid Web2 Web3 architectures connecting Deel's ledger, banking rails, and chain-based flows. Must Have Professional … limiting, event/queue-driven architectures. Experience in compliance-sensitive environments (KYC, AML, transaction monitoring). 4+ years of backend or full-stack engineering experience. Bonus Points Experience with Solidity, smart contracts, Truffle/Hardhat, EVM development, or L1/L2 scaling frameworks. Built or integrated custodial wallets, exchanges, or on/off-ramp processes. Experience with treasury, FX, reconciliation More ❯
/off-ramps, networks, compliance vendors). Contribute to smart contracts that power real financial operations (escrow, payouts, invoicing, treasury automation). Work with modern blockchain dev stacks: Ethereum, Solidity, Truffle/Hardhat, L1/L2 frameworks (Arbitrum, Base, Polygon, Optimism, etc.) Design hybrid Web2 Web3 architectures connecting Deel's ledger, banking rails, and chain-based flows. Must Have Professional … limiting, event/queue-driven architectures. Experience in compliance-sensitive environments (KYC, AML, transaction monitoring). 4+ years of backend or full-stack engineering experience. Bonus Points Experience with Solidity, smart contracts, Truffle/Hardhat, EVM development, or L1/L2 scaling frameworks. Built or integrated custodial wallets, exchanges, or on/off-ramp processes. Experience with treasury, FX, reconciliation More ❯
/off-ramps, networks, compliance vendors). Contribute to smart contracts that power real financial operations (escrow, payouts, invoicing, treasury automation). Work with modern blockchain dev stacks: Ethereum, Solidity, Truffle/Hardhat, L1/L2 frameworks (Arbitrum, Base, Polygon, Optimism, etc.) Design hybrid Web2 Web3 architectures connecting Deel's ledger, banking rails, and chain-based flows. Must Have Professional … limiting, event/queue-driven architectures. Experience in compliance-sensitive environments (KYC, AML, transaction monitoring). 4+ years of backend or full-stack engineering experience. Bonus Points Experience with Solidity, smart contracts, Truffle/Hardhat, EVM development, or L1/L2 scaling frameworks. Built or integrated custodial wallets, exchanges, or on/off-ramp processes. Experience with treasury, FX, reconciliation More ❯
/off-ramps, networks, compliance vendors). Contribute to smart contracts that power real financial operations (escrow, payouts, invoicing, treasury automation). Work with modern blockchain dev stacks: Ethereum, Solidity, Truffle/Hardhat, L1/L2 frameworks (Arbitrum, Base, Polygon, Optimism, etc.) Design hybrid Web2 Web3 architectures connecting Deel's ledger, banking rails, and chain-based flows. Must Have Professional … limiting, event/queue-driven architectures. Experience in compliance-sensitive environments (KYC, AML, transaction monitoring). 4+ years of backend or full-stack engineering experience. Bonus Points Experience with Solidity, smart contracts, Truffle/Hardhat, EVM development, or L1/L2 scaling frameworks. Built or integrated custodial wallets, exchanges, or on/off-ramp processes. Experience with treasury, FX, reconciliation More ❯
/off-ramps, networks, compliance vendors). Contribute to smart contracts that power real financial operations (escrow, payouts, invoicing, treasury automation). Work with modern blockchain dev stacks: Ethereum, Solidity, Truffle/Hardhat, L1/L2 frameworks (Arbitrum, Base, Polygon, Optimism, etc.) Design hybrid Web2 Web3 architectures connecting Deel's ledger, banking rails, and chain-based flows. Must Have Professional … limiting, event/queue-driven architectures. Experience in compliance-sensitive environments (KYC, AML, transaction monitoring). 4+ years of backend or full-stack engineering experience. Bonus Points Experience with Solidity, smart contracts, Truffle/Hardhat, EVM development, or L1/L2 scaling frameworks. Built or integrated custodial wallets, exchanges, or on/off-ramp processes. Experience with treasury, FX, reconciliation More ❯
/off-ramps, networks, compliance vendors). Contribute to smart contracts that power real financial operations (escrow, payouts, invoicing, treasury automation). Work with modern blockchain dev stacks: Ethereum, Solidity, Truffle/Hardhat, L1/L2 frameworks (Arbitrum, Base, Polygon, Optimism, etc.) Design hybrid Web2 Web3 architectures connecting Deel's ledger, banking rails, and chain-based flows. Must Have Professional … limiting, event/queue-driven architectures. Experience in compliance-sensitive environments (KYC, AML, transaction monitoring). 4+ years of backend or full-stack engineering experience. Bonus Points Experience with Solidity, smart contracts, Truffle/Hardhat, EVM development, or L1/L2 scaling frameworks. Built or integrated custodial wallets, exchanges, or on/off-ramp processes. Experience with treasury, FX, reconciliation More ❯
Northampton, Northamptonshire, UK Hybrid/Remote Options
Deel
/off-ramps, networks, compliance vendors). Contribute to smart contracts that power real financial operations (escrow, payouts, invoicing, treasury automation). Work with modern blockchain dev stacks: Ethereum, Solidity, Truffle/Hardhat, L1/L2 frameworks (Arbitrum, Base, Polygon, Optimism, etc.) Design hybrid Web2 Web3 architectures connecting Deel's ledger, banking rails, and chain-based flows. Must Have Professional … limiting, event/queue-driven architectures. Experience in compliance-sensitive environments (KYC, AML, transaction monitoring). 4+ years of backend or full-stack engineering experience. Bonus Points Experience with Solidity, smart contracts, Truffle/Hardhat, EVM development, or L1/L2 scaling frameworks. Built or integrated custodial wallets, exchanges, or on/off-ramp processes. Experience with treasury, FX, reconciliation More ❯
/off-ramps, networks, compliance vendors). Contribute to smart contracts that power real financial operations (escrow, payouts, invoicing, treasury automation). Work with modern blockchain dev stacks: Ethereum, Solidity, Truffle/Hardhat, L1/L2 frameworks (Arbitrum, Base, Polygon, Optimism, etc.) Design hybrid Web2 Web3 architectures connecting Deel's ledger, banking rails, and chain-based flows. Must Have Professional … limiting, event/queue-driven architectures. Experience in compliance-sensitive environments (KYC, AML, transaction monitoring). 4+ years of backend or full-stack engineering experience. Bonus Points Experience with Solidity, smart contracts, Truffle/Hardhat, EVM development, or L1/L2 scaling frameworks. Built or integrated custodial wallets, exchanges, or on/off-ramp processes. Experience with treasury, FX, reconciliation More ❯
/off-ramps, networks, compliance vendors). Contribute to smart contracts that power real financial operations (escrow, payouts, invoicing, treasury automation). Work with modern blockchain dev stacks: Ethereum, Solidity, Truffle/Hardhat, L1/L2 frameworks (Arbitrum, Base, Polygon, Optimism, etc.) Design hybrid Web2 Web3 architectures connecting Deel's ledger, banking rails, and chain-based flows. Must Have Professional … limiting, event/queue-driven architectures. Experience in compliance-sensitive environments (KYC, AML, transaction monitoring). 4+ years of backend or full-stack engineering experience. Bonus Points Experience with Solidity, smart contracts, Truffle/Hardhat, EVM development, or L1/L2 scaling frameworks. Built or integrated custodial wallets, exchanges, or on/off-ramp processes. Experience with treasury, FX, reconciliation More ❯
/off-ramps, networks, compliance vendors). Contribute to smart contracts that power real financial operations (escrow, payouts, invoicing, treasury automation). Work with modern blockchain dev stacks: Ethereum, Solidity, Truffle/Hardhat, L1/L2 frameworks (Arbitrum, Base, Polygon, Optimism, etc.) Design hybrid Web2 Web3 architectures connecting Deel's ledger, banking rails, and chain-based flows. Must Have Professional … limiting, event/queue-driven architectures. Experience in compliance-sensitive environments (KYC, AML, transaction monitoring). 4+ years of backend or full-stack engineering experience. Bonus Points Experience with Solidity, smart contracts, Truffle/Hardhat, EVM development, or L1/L2 scaling frameworks. Built or integrated custodial wallets, exchanges, or on/off-ramp processes. Experience with treasury, FX, reconciliation More ❯
/off-ramps, networks, compliance vendors). Contribute to smart contracts that power real financial operations (escrow, payouts, invoicing, treasury automation). Work with modern blockchain dev stacks: Ethereum, Solidity, Truffle/Hardhat, L1/L2 frameworks (Arbitrum, Base, Polygon, Optimism, etc.) Design hybrid Web2 Web3 architectures connecting Deel's ledger, banking rails, and chain-based flows. Must Have Professional … limiting, event/queue-driven architectures. Experience in compliance-sensitive environments (KYC, AML, transaction monitoring). 4+ years of backend or full-stack engineering experience. Bonus Points Experience with Solidity, smart contracts, Truffle/Hardhat, EVM development, or L1/L2 scaling frameworks. Built or integrated custodial wallets, exchanges, or on/off-ramp processes. Experience with treasury, FX, reconciliation More ❯
/off-ramps, networks, compliance vendors). Contribute to smart contracts that power real financial operations (escrow, payouts, invoicing, treasury automation). Work with modern blockchain dev stacks: Ethereum, Solidity, Truffle/Hardhat, L1/L2 frameworks (Arbitrum, Base, Polygon, Optimism, etc.) Design hybrid Web2 Web3 architectures connecting Deel's ledger, banking rails, and chain-based flows. Must Have Professional … limiting, event/queue-driven architectures. Experience in compliance-sensitive environments (KYC, AML, transaction monitoring). 4+ years of backend or full-stack engineering experience. Bonus Points Experience with Solidity, smart contracts, Truffle/Hardhat, EVM development, or L1/L2 scaling frameworks. Built or integrated custodial wallets, exchanges, or on/off-ramp processes. Experience with treasury, FX, reconciliation More ❯
Gloucester, Gloucestershire, UK Hybrid/Remote Options
Deel
/off-ramps, networks, compliance vendors). Contribute to smart contracts that power real financial operations (escrow, payouts, invoicing, treasury automation). Work with modern blockchain dev stacks: Ethereum, Solidity, Truffle/Hardhat, L1/L2 frameworks (Arbitrum, Base, Polygon, Optimism, etc.) Design hybrid Web2 Web3 architectures connecting Deel's ledger, banking rails, and chain-based flows. Must Have Professional … limiting, event/queue-driven architectures. Experience in compliance-sensitive environments (KYC, AML, transaction monitoring). 4+ years of backend or full-stack engineering experience. Bonus Points Experience with Solidity, smart contracts, Truffle/Hardhat, EVM development, or L1/L2 scaling frameworks. Built or integrated custodial wallets, exchanges, or on/off-ramp processes. Experience with treasury, FX, reconciliation More ❯
/off-ramps, networks, compliance vendors). Contribute to smart contracts that power real financial operations (escrow, payouts, invoicing, treasury automation). Work with modern blockchain dev stacks: Ethereum, Solidity, Truffle/Hardhat, L1/L2 frameworks (Arbitrum, Base, Polygon, Optimism, etc.) Design hybrid Web2 Web3 architectures connecting Deel's ledger, banking rails, and chain-based flows. Must Have Professional … limiting, event/queue-driven architectures. Experience in compliance-sensitive environments (KYC, AML, transaction monitoring). 4+ years of backend or full-stack engineering experience. Bonus Points Experience with Solidity, smart contracts, Truffle/Hardhat, EVM development, or L1/L2 scaling frameworks. Built or integrated custodial wallets, exchanges, or on/off-ramp processes. Experience with treasury, FX, reconciliation More ❯
/off-ramps, networks, compliance vendors). Contribute to smart contracts that power real financial operations (escrow, payouts, invoicing, treasury automation). Work with modern blockchain dev stacks: Ethereum, Solidity, Truffle/Hardhat, L1/L2 frameworks (Arbitrum, Base, Polygon, Optimism, etc.) Design hybrid Web2 Web3 architectures connecting Deel's ledger, banking rails, and chain-based flows. Must Have Professional … limiting, event/queue-driven architectures. Experience in compliance-sensitive environments (KYC, AML, transaction monitoring). 4+ years of backend or full-stack engineering experience. Bonus Points Experience with Solidity, smart contracts, Truffle/Hardhat, EVM development, or L1/L2 scaling frameworks. Built or integrated custodial wallets, exchanges, or on/off-ramp processes. Experience with treasury, FX, reconciliation More ❯
/off-ramps, networks, compliance vendors). Contribute to smart contracts that power real financial operations (escrow, payouts, invoicing, treasury automation). Work with modern blockchain dev stacks: Ethereum, Solidity, Truffle/Hardhat, L1/L2 frameworks (Arbitrum, Base, Polygon, Optimism, etc.) Design hybrid Web2 Web3 architectures connecting Deel's ledger, banking rails, and chain-based flows. Must Have Professional … limiting, event/queue-driven architectures. Experience in compliance-sensitive environments (KYC, AML, transaction monitoring). 4+ years of backend or full-stack engineering experience. Bonus Points Experience with Solidity, smart contracts, Truffle/Hardhat, EVM development, or L1/L2 scaling frameworks. Built or integrated custodial wallets, exchanges, or on/off-ramp processes. Experience with treasury, FX, reconciliation More ❯
/off-ramps, networks, compliance vendors). Contribute to smart contracts that power real financial operations (escrow, payouts, invoicing, treasury automation). Work with modern blockchain dev stacks: Ethereum, Solidity, Truffle/Hardhat, L1/L2 frameworks (Arbitrum, Base, Polygon, Optimism, etc.) Design hybrid Web2 Web3 architectures connecting Deel's ledger, banking rails, and chain-based flows. Must Have Professional … limiting, event/queue-driven architectures. Experience in compliance-sensitive environments (KYC, AML, transaction monitoring). 4+ years of backend or full-stack engineering experience. Bonus Points Experience with Solidity, smart contracts, Truffle/Hardhat, EVM development, or L1/L2 scaling frameworks. Built or integrated custodial wallets, exchanges, or on/off-ramp processes. Experience with treasury, FX, reconciliation More ❯
/off-ramps, networks, compliance vendors). Contribute to smart contracts that power real financial operations (escrow, payouts, invoicing, treasury automation). Work with modern blockchain dev stacks: Ethereum, Solidity, Truffle/Hardhat, L1/L2 frameworks (Arbitrum, Base, Polygon, Optimism, etc.) Design hybrid Web2 Web3 architectures connecting Deel's ledger, banking rails, and chain-based flows. Must Have Professional … limiting, event/queue-driven architectures. Experience in compliance-sensitive environments (KYC, AML, transaction monitoring). 4+ years of backend or full-stack engineering experience. Bonus Points Experience with Solidity, smart contracts, Truffle/Hardhat, EVM development, or L1/L2 scaling frameworks. Built or integrated custodial wallets, exchanges, or on/off-ramp processes. Experience with treasury, FX, reconciliation More ❯
