Full Stack Blockchain Engineer
Castle Island Ventures is a venture capital firm focused exclusively on public blockchains, investing in early-stage companies at the intersection of traditional finance and public blockchains.
About Castle Island Ventures
Castle Island Ventures is a venture capital firm focused exclusively on public blockchains. Their mission is to support entrepreneurs building the infrastructure and application companies required to help transformative blockchain protocols reach their full potential. They describe their focus as 'accelerating frictionless finance,' investing in early-stage companies operating at the intersection of traditional finance and public blockchains. The firm also produces a podcast and newsletter covering topics in this space, and maintains a portfolio of companies whose open roles are listed on their jobs board.
Skills
About the Role
You will work across the entire stack from user facing interfaces to backend services and on chain integrations to build and evolve the systems that power institutional digital asset operations. You will serve as a technical bridge between raw blockchain capabilities and the wallet experiences delivered to customers. This role involves diving into protocol level details and refining a transaction workflow UI.
Requirements
- 5+ years of full stack development experience with modern frontend frameworks TypeScript and backend services Go or Python
- 3+ years of hands on experience in the blockchain ecosystem working with protocols on chain data smart contracts or wallet infrastructure
- Knowledge of consensus mechanisms cryptographic primitives and distributed systems
- Strong understanding of microservices architecture API design and modern frontend patterns
- Experience applying AI tools for programming
- Strong verbal and written communication skills and a collaborative mindset
- Experience working in cross functional teams and fast paced environments
- Willingness to learn including new coding languages and tech stacks
Responsibilities
- Design and build end to end features across frontend backend and blockchain layers that power the wallet infrastructure
- Architect and deliver mission critical components while maintaining continuous operations with no disruption to live transaction volume
- Research and integrate blockchain technologies including Layer 2 solutions cross chain bridges staking protocols and DeFi integrations into the platform
- Develop intuitive responsive interfaces that surface complex blockchain operations in a clear and actionable way for institutional users
- Collaborate with blockchain foundations vendors builders and customers to understand protocol design tooling and integration requirements
- Balance pragmatism with vision and make smart trade offs to deliver incremental value while advancing toward next generation architecture goals
- Collaborate with product engineering and security teams to define technical requirements and deliver cohesive solutions
- Mentor and guide other engineers on blockchain technologies full stack patterns and best practices