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- Tasks: Audit and optimise blockchain architecture for a cutting-edge tokenisation platform.
- Company: Join a forward-thinking tech company focused on blockchain innovation.
- Benefits: Competitive pay, flexible hours, and the chance to work with top-tier technology.
- Other info: Short-term engagement with potential for future opportunities.
- Why this job: Be at the forefront of blockchain technology and make a real impact.
- Qualifications: Expertise in Ethereum, Polygon, and Solidity smart contracts required.
The predicted salary is between 60000 - 80000 £ per year.
We are seeking an Expert Blockchain Developer for a short-term, fixed-scope engagement to facilitate a smooth vendor handoff of our blockchain tokenization platform. The system is designed to capture external off-chain data feeds and utilize that data to mint utility and financial tokens. The architecture leverages Ethereum and Polygon (L2) for smart contract execution, and relies on IPFS for storing metadata, slow-moving reporting data, and JSON files.
Your primary goal is to ensure a seamless technical transition from the previous development vendor to our new team. You will audit the current Web3 architecture, evaluate the existing smart contracts, and validate the operational approach for the platform's overall blockchain infrastructure. This is a fixed-scope engagement expected to run for a few weeks.
Key responsibilities include:
- Smart Contract Code Review: Conduct a comprehensive code review and audit of the existing Solidity smart contracts, including the core ERC-20 token contracts, certificate data structures, and the central minting controller logic.
- Architecture & Approach Evaluation: Assess the overall Web3 architecture. Specifically, evaluate the strategy of storing metadata and large binary object (BLOB) files on IPFS, while rolling up volume-based transactions on the Polygon blockchain.
- Web3 Tooling Assessment: Review, validate, and document the current Hardhat development kit setup to ensure it is ready for the new team to take over.
- Gas Optimization & Operations: Analyze the smart contracts to ensure they are designed with a very low gas footprint. Evaluate the overall operational gas fees associated with the continuous minting and burning of tokens on the network.
- Integration Audit: Evaluate how the blockchain layer interacts with the system's centralized off-chain services, such as the backend APIs and cloud-managed blockchain nodes.
SKILLS
Must have:
- Extensive professional experience as a Blockchain Developer specializing in Ethereum (L1) and Polygon (L2) network ecosystems.
- Proven track record working with ERC-20 fungible token standards, including implementing customized minting, burning, and access‑control mechanisms.
- Strong hands‑on experience using Hardhat as a Web3 development, testing, and deployment environment.
- Deep expertise in writing, auditing, and securely deploying Solidity smart contracts.
- Strong ability to audit code for security vulnerabilities, analyze operational gas costs, and recommend or implement architectural optimizations.
- Demonstrated understanding of decentralized storage, specifically utilizing IPFS for handling JSON metadata and large files.
Nice to have:
- Domain knowledge of tokenizing Real-World Assets (RWA) or integrating off‑chain industrial data feeds.
- Familiarity with cloud infrastructure, specifically managed blockchain services and serverless computing (e.g., AWS Managed Blockchain, Lambda).
- Understanding of data privacy techniques in Web3, such as utilizing encryption protocols for private IPFS data or implementing Zero Knowledge Proofs (ZKP).
- Familiarity with the broader technological stack commonly utilized alongside Web3 platforms (e.g., ReactJS, Node.js, Python, PostgreSQL, Terraform, Docker).
Expert Blockchain Developer in London employer: Luxoft
Contact Detail:
Luxoft Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Expert Blockchain Developer in London
✨Tip Number 1
Network like a pro! Get out there and connect with people in the blockchain space. Attend meetups, webinars, or even online forums. You never know who might have the inside scoop on job openings or can refer you to someone looking for an Expert Blockchain Developer.
✨Tip Number 2
Show off your skills! Create a portfolio showcasing your previous projects, especially those involving Ethereum and Polygon. Highlight your smart contract audits and any optimisations you've made. This will give potential employers a clear view of what you can bring to the table.
✨Tip Number 3
Don’t just apply anywhere—apply through our website! We’re always on the lookout for talented individuals like you. Tailor your application to highlight your experience with ERC-20 standards and IPFS, and let us know how you can help with our blockchain tokenization platform.
✨Tip Number 4
Prepare for interviews by brushing up on common blockchain interview questions. Be ready to discuss your experience with Solidity, gas optimisation, and Web3 tooling. Show us that you not only understand the tech but can also communicate it clearly!
We think you need these skills to ace Expert Blockchain Developer in London
Some tips for your application 🫡
Tailor Your CV: Make sure your CV highlights your experience with Ethereum and Polygon, as well as your skills in Solidity smart contracts. We want to see how your background aligns with the specific requirements of the Expert Blockchain Developer role.
Craft a Compelling Cover Letter: Your cover letter is your chance to shine! Use it to explain why you're the perfect fit for this short-term engagement. Share your passion for blockchain technology and how your expertise can help us with the vendor handoff.
Showcase Relevant Projects: If you've worked on any projects involving ERC-20 tokens or IPFS, make sure to mention them. We love seeing real-world applications of your skills, so don’t hold back on the details!
Apply Through Our Website: We encourage you to apply directly through our website. It’s the best way for us to receive your application and ensures you’re considered for the role. Plus, it’s super easy!
How to prepare for a job interview at Luxoft
✨Know Your Blockchain Inside Out
Make sure you brush up on your knowledge of Ethereum and Polygon ecosystems. Be ready to discuss your experience with ERC-20 tokens and how you've implemented minting and burning mechanisms in past projects.
✨Prepare for Technical Questions
Expect to dive deep into smart contract auditing and gas optimization. Prepare examples from your previous work where you successfully identified vulnerabilities or optimised gas costs, as this will showcase your hands-on expertise.
✨Familiarise Yourself with the Project
Take time to understand the specifics of the blockchain tokenization platform mentioned in the job description. Knowing how off-chain data feeds integrate with the system will help you answer questions more effectively and demonstrate your genuine interest.
✨Showcase Your Problem-Solving Skills
Be ready to discuss how you would approach the integration audit and architecture evaluation. Think through potential challenges and solutions, as this will highlight your analytical skills and ability to transition smoothly between teams.