Blockchain Developer - Smart Contracts

Blockchain Developer | 6 Month Contract | Hybrid | London

We're looking for an experienced Blockchain Developer to join a growing engineering team working on real-world smart contract solutions. This will be a hands-on role focused on smart contract development across multiple blockchain ecosystems, with a strong emphasis on Ethereum (Solidity) or Solana (Rust), and exposure to DAML-based enterprise platforms is highly valued.

Location: London (1 day onsite, 4 WFH)

Contract: 6 Months (OIR35)

Rate: £500-600 DOE

What You'll Be Working On:

• Designing, developing and maintaining smart contracts / on-chain programs
• Building solutions on Ethereum (Solidity) or Solana (Rust)
• Contributing to enterprise distributed ledger workflows (DAML-based platforms)
• Collaborating with engineers and product teams on architecture, security and scalability
• Reviewing, testing, and improving smart contract code
• Supporting integration with off-chain services, APIs, and data layers

Key Skills & Experience:

• Strong experience working with Solidity and Ethereum smart contracts
• And/Or experience developing Solana programs using Rust
• Understanding of smart contract security, testing and optimisation
• Experience working with DAML (desirable but not essential)
• Exposure to XRP Ledger/Ripple concepts or integrations (Bonus)

Why This Role?

• Work across multiple blockchain ecosystems without being siloed
• Opportunity to expand into enterprise DLT and future XRP/Ripple work
• Flexible working pattern with minimal on-site requirement
• Competitive contract rate
• Engineering-led, pragmatic blockchain work (not hype-driven)

If you're a Blockchain Developer with strong smart contract experience in either Ethereum or Solana and an interest in broader DLT platforms - we'd love to hear from you.