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.