At a Glance
- Tasks: Design and develop smart contracts for enterprise blockchain platforms, collaborating with diverse teams.
- Company: Join a leading tech firm at the forefront of blockchain innovation.
- Benefits: Competitive daily rate, hybrid working model, and opportunities for professional growth.
- Other info: Exciting contract role until 2026 with excellent career advancement potential.
- Why this job: Make a real impact in the blockchain space while working with cutting-edge technologies.
- Qualifications: 8+ years in software engineering with strong blockchain focus and hands-on Solidity experience.
About the role: As a Senior Smart Contract Developer / Blockchain Engineer with expertise in enterprise blockchain platforms, you will collaborate with our client's blockchain and cloud infrastructure teams, architects, product owners, and external partners in multi-organisation blockchain networks. You will be responsible for designing, developing, testing, and deploying smart contracts and blockchain solutions for enterprise environments.
Job Details:
- Location: London
- Duration: 04/12/2026
- Days on site: 2
Roles and Responsibilities:
- Design, develop, test, and deploy smart contracts for enterprise blockchain platforms (Ethereum, GoQuorum, Hyperledger Besu, Corda).
- Implement asset tokenization, on-chain/off-chain data models, and blockchain transaction workflows.
- Develop and integrate RESTful APIs and microservices (Node.js / Java) to interact with smart contracts.
- Ensure security, performance, and scalability of smart contracts and blockchain applications.
- Collaborate with architects, product owners, and external partners in multi-organization blockchain networks.
- Lead or mentor development teams, enforcing coding standards, testing, and best practices.
- Work closely with cloud infrastructure teams to deploy blockchain solutions using Azure/AWS services.
- Support POCs, innovation initiatives, and exploration of Layer 2 scaling solutions.
- Participate in design reviews, audits, and governance processes related to blockchain systems.
Other stuff we're potentially looking for:
- 8+ years of experience in software engineering with strong blockchain focus.
- Hands-on experience with Solidity smart contract development.
- Strong understanding of Ethereum-compatible platforms (GoQuorum, Hyperledger Besu).
- Experience with enterprise blockchain frameworks such as R3 Corda and Ripple.
- Proficiency in Node.js, TypeScript, and/or Java (Spring Boot).
- Strong knowledge of microservices architecture and asynchronous processing patterns.
- Experience designing on-chain vs off-chain data models.
- Familiarity with REST APIs, event-driven systems, and message queues.
- Solid understanding of blockchain security concepts (permissions, key management, transaction integrity).
What's in it for you? Our client loves to reward their people for doing a great job. This is a contract role until 2/2026. A daily rate, in-scope IR35, of £535 (via a Hays Approved Umbrella Company). This role provides a hybrid working access in London (2 days onsite).
Next Steps: Once you've applied, one of our friendly recruitment consultants will give you a call and talk you through the screening process. If your application is successful, you'll be involved in a live virtual interview with one of our client's hiring managers to get to know you better. We look forward to speaking to you!
Senior SmartContract developer employer: Hays Specialist Recruitment Limited
Join a forward-thinking company that values innovation and collaboration, offering a dynamic work culture in the heart of London. As a Senior Smart Contract Developer, you'll have the opportunity to work on cutting-edge blockchain solutions while enjoying a competitive daily rate and hybrid working arrangements. With a strong focus on employee growth and mentorship, this role is perfect for those looking to make a meaningful impact in the tech industry.
Contact Detail:
Hays Specialist Recruitment Limited Recruiting Team
StudySmarter Expert Advice🤫
We think this is how you could land Senior SmartContract developer
✨Tip Number 1
Network like a pro! Reach out to your connections in the blockchain space and let them know you're on the hunt for a Senior Smart Contract Developer role. You never know who might have the inside scoop on opportunities or can refer you directly.
✨Tip Number 2
Get ready for those interviews! Brush up on your Solidity skills and be prepared to discuss your experience with Ethereum-compatible platforms. Practise explaining complex concepts in simple terms, as you'll likely need to communicate with non-technical stakeholders.
✨Tip Number 3
Show off your projects! If you've worked on any smart contracts or blockchain solutions, make sure to have them ready to share during interviews. A portfolio showcasing your hands-on experience can really set you apart from the competition.
✨Tip Number 4
Apply through our website! We make it super easy for you to find and apply for roles that match your skills. Plus, our recruitment consultants are friendly and ready to help you navigate the process, so don’t hesitate to reach out!
We think you need these skills to ace Senior SmartContract developer
Some tips for your application 🫡
Tailor Your CV:Make sure your CV is tailored to highlight your experience with smart contracts and blockchain technologies. We want to see how your skills align with the role, so don’t be shy about showcasing your relevant projects!
Craft a Compelling Cover Letter:Your cover letter is your chance to shine! Use it to explain why you’re passionate about blockchain and how your background makes you the perfect fit for this role. We love seeing enthusiasm and a personal touch.
Showcase Your Projects:If you've worked on any notable blockchain projects or have GitHub repositories, include them in your application. We appreciate seeing real examples of your work and how you’ve tackled challenges in the past.
Apply Through Our Website:Don’t forget to apply through our website! It’s the best way for us to receive your application and ensures you’re considered for the role. Plus, it makes the whole process smoother for everyone involved.
How to prepare for a job interview at Hays Specialist Recruitment Limited
✨Know Your Smart Contracts
Make sure you brush up on your knowledge of smart contracts, especially in Solidity. Be ready to discuss your past projects and how you've tackled challenges in developing and deploying smart contracts on platforms like Ethereum or Hyperledger.
✨Showcase Your Collaboration Skills
Since this role involves working with various teams, be prepared to share examples of how you've successfully collaborated with architects, product owners, and external partners. Highlight any experience you have in multi-organisation blockchain networks.
✨Demonstrate Technical Proficiency
Be ready to dive deep into technical discussions about RESTful APIs, microservices, and the specific blockchain frameworks mentioned in the job description. Show off your skills in Node.js, Java, and any relevant enterprise blockchain frameworks you've worked with.
✨Prepare for Security Questions
Given the importance of security in blockchain applications, expect questions around blockchain security concepts. Brush up on permissions, key management, and transaction integrity to demonstrate your understanding and expertise.
