Blockchain Developer

Blockchain / DLT Developer

London - Hybrid / Remote

Permanent

£90,000 - £110,000

We are looking for an experienced

Blockchain / DLT Developer

to join a growing technology team delivering innovative blockchain solutions within the financial services sector.

You will design, build and deploy

distributed ledger and smart contract solutions

, working across

Ethereum, Hedera, Algorand and a proprietary enterprise blockchain platform

. You will collaborate with architects, engineers, product managers and client stakeholders to deliver secure, scalable and high-performance decentralised applications.

Key Responsibilities

• Design, develop and deploy smart contracts and decentralised applications across Ethereum, Hedera, Algorand and proprietary blockchain infrastructure.
• Develop blockchain solutions tailored to financial services and capital markets clients.
• Contribute to the enhancement of a proprietary enterprise blockchain platform, including protocol improvements and tooling.
• Integrate blockchain components with backend services, APIs and wider platform infrastructure.
• Conduct smart contract testing, auditing and optimisation, focusing on security, performance and gas efficiency.
• Stay current with developments across Ethereum/EVM, Layer 2s, Hedera, Algorand and the wider DLT ecosystem.
• Provide technical guidance to junior developers and contribute to engineering best practice.
• Work with product, project and business teams to understand requirements and support delivery.

About You

• Hands-on experience working with security tokens on distributed ledgers.
• Proven experience developing and deploying

Ethereum smart contracts using Solidity

.

• Experience with

Hedera

(Solidity/Hedera Token Service) or

Algorand

(PyTEAL/TEAL/ARC standards).

• Strong understanding of blockchain fundamentals, including consensus, cryptography, tokenisation and DLT architectures.
• Experience with Web3 libraries such as

Web3\.js or Ethers.js

, or equivalent DLT SDKs.

• Proficiency in

Node.js, Python, Go or Java

, with experience working with RESTful or event-driven APIs.

• Familiarity with

Hardhat, Foundry, Truffle

or equivalent blockchain development tools.

• Strong Git and collaborative development experience.
• Excellent analytical, problem-solving and communication skills.
• Comfortable working in a

fast-paced, client-facing environment

.

Desirable

• Experience with proprietary enterprise blockchain platforms.
• Knowledge of

Layer 2s

such as Polygon, Arbitrum or Optimism and cross-chain interoperability.

• Familiarity with

ERC-20, ERC-1400 and ERC-3643

and/or DeFi protocols.

• Experience in

financial services, capital markets or fintech

.

• Understanding of blockchain regulatory and compliance requirements.
• Knowledge of

CI/CD, Docker, Kubernetes and cloud infrastructure

.

• Experience with Agile and DevOps methodologies