Blockchain Solutions Architect (London)

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Parfin is the leading web3 infrastructure provider in Latin America. We offer institutions an end-to-end solution for digital asset custody, trading, tokenization, and management. Our clients include some of the largest banks and crypto-native companies in Latin America.

We accelerate institutional adoption of web3 by creating solutions that simplify access to the ecosystem, while maintaining the highest standards of security, robustness, and compliance. We are a remote-first company with a diverse team across 4 continents.

About the Position

Were looking for a Blockchain Solutions Engineer who is hands-on and passionate about designing and building robust, secure, and institutional grade blockchain products and client solutions. You will play a critical role in shaping the technical architecture of our blockchain offerings, engaging with clients, and ensuring our solutions meet the stringent demands of global financial institutions.

This role requires deep technical expertise, a strong security mindset, an understanding of complex financial systems and the ability to take ownership of the development and deployment of smart contractbased systems.

What Youll Do

• Act as a trusted advisor to institutional clients, understanding their requirements and translating them into robust technical solutions
• Design, build, and deploy smart contracts and blockchain infrastructure, primarily on EVM-compatible chains
• Write clean, efficient, and secure code in Solidity, Rust, or Go
• Design end-to-end blockchain-based solutions for financial services clients, ensuring scalability, security, compliance, and high performance
• Design and oversee integrations with legacy banking systems, APIs, identity providers, and external financial networks
• Define and enforce development best practices, security standards , and code quality
• Collaborate closely with product, engineering, and security teams across time zones
• Produce high-quality documentation to support maintainability and audits
• Stay at the forefront of blockchain trends, especially Layer 2, EVM performance, and zero-knowledge systems
• Review code with a critical eye for scalability and security

What Were Looking For

• 5+ years of experience in software engineering, with at least 3 years in blockchain
• Deep understanding of Ethereum, EVM, and smart contract security
• Proven track record of deploying production smart contracts
• Solid grasp of security principles and vulnerability mitigation in blockchain systems
• Experience writing clear and thorough documentation
• Strong ownership mentality and ability to operate independently
• Fluent in English (spoken and written)

• Seniority level
  Mid-Senior level

• Employment type
  Full-time

• Job function
  Engineering and Information Technology
• Industries
  IT Services and IT Consulting and Financial Services

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