Blockchain / DLT Developer

careersdeltacapita; Greater London; Remote; GBP 90,000 - 120,000; Full time

Job summary

Delta Capita is seeking a Blockchain / DLT Developer to design, build and deploy distributed ledger and smart contract solutions for financial services clients. You will work across Ethereum, Hedera, Algorand and MACH Chain to deliver secure, scalable on-chain applications.

You will collaborate with architects, product managers and client stakeholders, applying deep technical expertise to solve complex challenges while staying current with layer-2 scaling, security best practices and DevOps

Qualifications

• Experience with security tokens on distributed ledgers.
• Hands-on smart contract development on Ethereum (Solidity).
• Familiar with Hedera or Algorand technologies.
• Strong Web3 library experience (Web3.js, Ethers.js).
• Backend languages: Node.js, Python, Go, or Java.
• Familiar with Hardhat, Truffle, Foundry or equivalents.
• Version control with Git and collaborative workflows.
• Strong analytical and security-focused problem solving.
• Excellent communication across technical and non-technical stakeholders.
• Ability to work in fast-paced, client-facing environment.

Responsibilities

• Design, develop, and deploy smart contracts and DApps across Ethereum, Hedera, Algorand, and MACH Chain.
• Tailor blockchain solutions to financial services client requirements.
• Contribute to MACH Chain development, including tooling and protocol work.
• Collaborate with backend engineers and product managers to integrate components.
• Audit, test, and optimise smart contracts for security and gas efficiency.
• Stay current with Ethereum, Hedera, Algorand and DLT developments.
• Provide guidance to junior team members and share knowledge internally.
• Engage with project managers to understand requirements and support delivery.
• Contribute to development process improvements and tooling.

Skills

Solidity

Web3.js

Ethers.js

Node.js

Python

Go

Java

Smart contract auditing

Ethereum

Security

Tools

Hardhat

Truffle

Foundry

Git

Docker

Kubernetes

Job description

Job Title: Blockchain / DLT Developer

Location: Ipswich, London or Remote

As a Blockchain Developer at MACH, you will play a central role in designing, building, and deploying distributed ledger and smart contract solutions for our financial services clients. You will work across Ethereum, Hedera, Algorand, and MACH Chain (our proprietary blockchain platform) to deliver secure, scalable, and high-performance decentralised applications. Collaborating with cross-functional teams including architects, product managers, and client stakeholders, you will bring deep technical expertise and a proactive approach to solving complex on-chain challenges.

Responsibilities include:

• Design, develop, and deploy smart contracts and decentralised applications across Ethereum, Hedera, Algorand, and MACH Chain (our proprietary blockchain).
• Design and implement blockchain-based solutions tailored to the specific requirements of financial services clients.
• Contribute to the ongoing development and enhancement of MACH Chain, including protocol-level improvements and tooling.
• Collaborate with backend engineers, solution architects, and product managers to integrate blockchain components with broader platform services and APIs.
• Conduct rigorous smart contract auditing, testing, and optimisation to ensure security, correctness, and gas efficiency.
• Stay current with emerging developments across Ethereum (EVM/L2), Hedera Hashgraph, Algorand, and the broader DLT ecosystem.
• Provide technical guidance and support to junior team members and contribute to internal knowledge sharing.
• Engage with project managers, product managers and business analysts to understand requirements, present solutions, and support delivery.
• Contribute to the continuous improvement of MACH's development processes, standards, and tooling.

As an experienced Blockchain Developer, you will have:

• Experience working specifically with security tokens on distributed ledgers.
• Proven hands-on experience developing and deploying smart contracts on Ethereum (Solidity) and familiarity with at least one of Hedera (Solidity/Hedera Token Service) or Algorand (PyTEAL/TEAL/ARC standards).
• Strong understanding of blockchain fundamentals including consensus mechanisms, cryptographic primitives, tokenomics, and DLT architectures.
• Experience working with Web3 libraries such as Web3.js, Ethers.js, or equivalent SDKs for Hedera and Algorand.
• Proficiency in one or more backend languages (e.g. Node.js, Python, Go, Java) and RESTful/event-driven API design.
• Familiarity with blockchain development toolchains including Hardhat, Truffle, Foundry, or equivalent.
• Experience with version control (Git) and collaborative development workflows.
• Strong analytical and problem-solving skills with a rigorous approach to security and edge-case reasoning.
• Excellent communication skills, with the ability to work effectively across technical and non-technical stakeholders.
• Comfortable working in a fast-paced, client-facing environment with competing priorities.

Desirable

• Experience with or exposure to proprietary enterprise blockchain platforms.
• Knowledge of Layer 2 scaling solutions (e.g. Polygon, Arbitrum, Optimism) and cross-chain interoperability protocols.
• Familiarity with DeFi protocols and token standards (ERC-20, ERC-1400, ERC-3643).
• Experience in financial services, capital markets, or fintech environments.
• Understanding of regulatory and compliance considerations relevant to blockchain deployments in financial services.
• Knowledge of CI/CD pipelines, containerisation (Docker/Kubernetes), and cloud infrastructure.
• Exposure to Agile and DevOps methodologies.

How We Work:

Delta Capita is an equal opportunity employer. We positively encourage applications from suitably qualified and eligible candidates regardless of age, colour, disability, national origin, ancestry, race, religion, gender, sexual orientation, gender identity and/or expression, veteran status, genetic information, or any other status protected by applicable law.

We will ensure that individuals with disabilities are provided reasonable accommodation to participate in the job application or interview process, to perform essential job functions, and to receive other benefits and privileges of employment. If you require any reasonable adjustments through your interview process, please inform us.

This is a permanent full-time position. As the selection and interview process is ongoing, please submit your application in English as soon as possible, if your profile is selected, a member of our team will contact you within 4 weeks.

Who We Are:

Delta Capita Group (a member of the Prytek Group) is a global managed services, consulting, and solutions provider with a unique combination of experience in Financial Services and technology innovation capability. Our mission is to reinvent the financial services value chain providing technology based mutualized services for financial institutions for non-differentiating services.