Blockchain lead

**Role Overview:** We are seeking a skilled Web3 blockchain developer with strong experience in Ethereum and decentralized finance (DeFi). The ideal candidate should have expertise in smart contract development, ERC20 tokens, security best practices, and experience integrating with blockchain payment gateways or APIs related to stablecoins.

**Key Responsibilities:**

* Develop and deploy ERC20 smart contracts, including token minting, redemption, and transfer functionalities on Ethereum.

* Design, review, and optimize smart contracts related to crypto lending, escrow, collateral, and repayments.

* Integrate with Circle’s platform for USDC operations, understanding minting and redeeming processes via its APIs.

* Assess stability mechanisms of USDC, ensuring secure handling of minting, redemption workflows, and transactions.

* Collaborate with backend systems (Node.js / Typescript) to facilitate blockchain interactions, manage transactions, and implement error recovery.

* Implement blockchain security best practices, including transaction signing, API key management, and event validation.

* Explore interoperability between Ethereum and other blockchain networks as needed, considering costs and operational efficiency.

* Work closely with frontend and backend teams to embed blockchain transaction logic, wallet management, and transaction tracking.

* Document smart contract code, API workflows, and integration processes to support compliance and audits.

* Ensure platform adherence to relevant regulatory standards for crypto operations.

* Requirements:

* Proven experience in Ethereum smart contract development (Solidity), with a focus on ERC20 standards.

* Experience with DeFi protocols, escrow, lending, or collateral management smart contracts.

* Familiarity with Circle’s platform APIs, especially for USDC minting and redemption workflows, is a strong advantage.

* Hands-on experience with blockchain libraries such as web3.js, ethers.js, or similar.

* Understanding of blockchain transaction costs, network throughput, and interoperability considerations.

* Strong knowledge of smart contract security, auditing, and safe transaction handling.

* Experience working with backend environments like Node.js or Typescript.

* Basic familiarity with Circle’s wallet APIs, webhook integrations, and transaction validation best practices.

* Excellent coding, debugging, and documentation skills.

* Ability to work independently and collaboratively in a dynamic environment.

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**Preferred Skills:**

* Experience across multiple blockchain ecosystems (e.g., Ethereum, Polygon, Solana).

* Prior exposure to Circle’s API systems and USDC management workflows.

* Strong security awareness around wallet management, API key handling, and transaction validation.

* Knowledge of DeFi security audits, formal verification, or related security frameworks.

* Contributions to open-source blockchain projects or experience in blockchain community engagement.

• Proficient in Solidity programming language
• Experience with wallet integrations
• Experience with ethers.js/web3.js
• Experience with Nodejs
• Experience with upgradable contracts, dynamic contracts, and factory contracts
• Design and develop smart contracts and decentralized applications on Ethereum, Polygon and Tron
• Excellent knowledge of various token standards like ERC20, ERC721 and ERC1155
• Write end-to-end unit tests for all smart contracts

We are looking for a Blockchain Developer who has around 2-3 years of experience, and has past experience with working on blockchain-based systems and scenarios. The ideal candidate would be someone who understands the concepts of Blockchain technology and having working experience on Rust and Solana.

• Desire to work in a startup environment, fun@work culture and able to self-manage.

• In Depth understanding of at-least two blockchain network like Rust, Substrate, Polkadot Solana, Hedera Hashgraph, Tezos, BlockApps, Algorand, Corda, Lambda, Cargo etc

• Familiarity with basic cryptography to understand the essentials of blockchain systems.

• Hands on in Rust

• Designing and writing well-structured APIs in Node.js and MongoDb to connect to Blockchain infrastructure

• Staying up to date with new developments and news in integrated chains.

• Past experience with Wallets or Crypto Exchanges would be a major plus.

• Experience with third-party libraries and APIs.

• Experience working in an agile development process.

• Documenting architecture and guidelines.

• Be proficient in using version control and continuous integration, with tools such as Gitlab, Git and Jenkins.

• Write clear, maintainable and testable code that you are proud of.

• Attend training and education where necessary to up-skill themselves.

• Experience in writing smart contracts for large-scale production blockchain applications.

• Cross-team contribution whenever required.

• Familiarity with basic cryptography.

• Should have a deep understanding of the blockchain and cryptocurrency space and smart contract systems, specifically having a deep understanding of Rust.

Technical Experience :

Arcana is The Storage Layer for Ethereum with a Privacy Stack for developers to build secure and privacy preserving apps. Users care about privacy now more than ever before and it is becoming a first-class citizen in the modern development stack. Arcana makes it easier for apps to be privacy-focused out of the box.

With Arcana’s privacy stack, developers give control of data back to their users. They can easily integrate our SDK with their apps and use our modular feature blocks for Authentication, Identity Management, Encryption, Access Control, and Decentralized Storage. All of which are secured by and verifiable on the blockchain.

Visit http://www.arcana.network/">www.arcana.network to learn more about us, our backers, and our offerings

Arcana is stack of services to help developers build more secure and privacy preserving apps.

We are looking to onboard a lead for our blockchain engineering team. At Arcana we are building our own sovereign EVM compatible chain with its own set of validators. Security, Scalability and Interoperability are the primary goals of the blockchain and we're looking to put together some of the best minds to achieve this. This is a full-time role and completely remote friendly.

• Experience in managing a team of engineers for at least 2+ years.
• Must have significant experience with Geth (Go Ethereum) or equivalent blockchain nodes and p2p
• Must be proficient with Golang
• Deep understanding of Blockchain, Solidity, Assembly, and the EVM
• Experience in standard software practices including clean code, unit tests and CI/CD
• Knowledge of Rust, Javascript, Typescript or Node.js is a plus
• Active member of the dev community will be a plus (e.g. experience contributing to OSS or EIPs)
• Experience in leading and communicating with remote teams

ROLES & RESPONSIBILITIES:

• Responsible for Blockchain evaluation, smart contract development, implementation supporting the digital strategy group initiatives.
• Must have hands-on experience using Solidity.
• Experience in setting up Blockchain nodes and networks.
• Design and develop the architecture of Blockchain Solutions from a systemic standpoint.
• Responsible for creating technical solution architecture for a given business problem.
• Responsible for quality of the application and implements necessary checks and balances via peer review, code scans, automated tests.
• Set the standards for design and development.
• Oversees, maintains,s and supports existing software applications.
• Provide subject matter expertise in reviewing, analyzing, and resolving complex issues.
• Prepare user and systems documentation as needed.
• Design & implement Blockchain solutions which may run on Blockchain platforms and composed of multiple software packages based on Solution Architect.
• Lead a team of Blockchain juniors/trainees.
• Work with product managers and other product teams.
• Well versed in using GitHub.
• Should be flexible to explore different blockchains be it Ethereum, Ripple, Tron, AVA, Multichain, etc

• Writing and Understand smart contracts using Solidity 
• Write backend APIs using Next JS, Node JS
• Experience is cross chain development, block chain oracles, multi sig is desirable
• Thorough understanding of block chain components.
• Thorugh understanding of IDO process, Swapping protocols, Tokenomics
• Understanding of Docker, Kubernetes , Cloud technologies like AWS , GCP is highly desirable.