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# Senior Blockchain Developer / Web3 Architect

- **Company:** Rawtech Digital
- **Location:** Barcelona, Spain
- **Salary:** €80,000.0
- **Contract:** Permanent contract
- **Skills:** JavaScript (Programming Language), Cloud Computing, DevOps, Blockchain, Software Engineering, TypeScript, NFT, Ethereum, Solidity, Web3.js, Golang
- **Published:** June 20, 2026
- **Apply:** https://es.indeed.com/viewjob?jk=d9d3d2b5e8bd4ef2

## About the Role

* 5+ years of software development experience.
 * 3+ years of hands-on blockchain development experience.
 * Strong proficiency in Solidity and smart contract development.
 * Experience with Ethereum and EVM-compatible networks.
 * Strong understanding of decentralized application (dApp) architecture.
 * Experience with Web3 libraries and frameworks such as Web3.js, Ethers.js, or similar.
 * Proficiency in JavaScript/TypeScript.
 * Experience with cloud infrastructure and DevOps practices.
 * Strong understanding of blockchain security principles.
 * Excellent problem-solving and communication skills.
 * Fluent in English.

Preferred Qualifications

 * Experience with Layer 2 solutions and scaling technologies.
 * Knowledge of DeFi, NFTs, DAOs, or tokenomics.
 * Experience with Rust, Golang, or other blockchain-related languages.
 * Familiarity with cross-chain protocols and interoperability solutions.
 * Experience leading technical teams or projects.

## Description

As a Senior Blockchain Developer / Web3 Architect, you will be responsible for architecting, developing, and deploying secure, scalable blockchain solutions. You will work closely with product managers, developers, and stakeholders to deliver cutting-edge Web3 products that drive innovation and business growth.

Key Responsibilities

 * Design and develop blockchain-based applications and infrastructure.
 * Architect secure and scalable Web3 platforms and decentralized systems.
 * Develop, test, and deploy smart contracts.
 * Integrate blockchain protocols, wallets, and decentralized services.
 * Conduct smart contract audits and security reviews.
 * Optimize blockchain performance, scalability, and reliability.
 * Collaborate with cross-functional teams to define technical requirements and product roadmaps.
 * Stay current with emerging blockchain technologies, protocols, and industry best practices.
 * Mentor junior developers and provide technical leadership.


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- [​Road to Web3](https://www.wearedevelopers.com/videos/584-road-to-web3)
- [From DevOps to Scaled DevOps: How We’re Rebuilding Continuous Delivery as a Platform](https://www.wearedevelopers.com/videos/100018-from-devops-to-scaled-devops-how-we-re-rebuilding-continuous-delivery-as-a-platform)
- [Transforming Newspaper Readers into NFT holders](https://www.wearedevelopers.com/videos/1162-transforming-newspaper-readers-into-nft-holders)
- [Go with the Flow: Stop the Leaks Before Your Memory's a Waterfall!](https://www.wearedevelopers.com/videos/100073-go-with-the-flow-stop-the-leaks-before-your-memory-s-a-waterfall)
- [#90DaysOfDevOps - The DevOps Learning Journey](https://www.wearedevelopers.com/videos/548-90daysofdevops-the-devops-learning-journey)
- [How to Build for Decentralized Systems](https://www.wearedevelopers.com/videos/931-how-to-build-for-decentralized-systems)

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