Fullstack Engineer - Custody (Remote)

About the Role

We are seeking a talented Fullstack Engineer - Custody (Remote) to join our innovative team at Kraken. As a fully remote company, we have Krakenites in over 70 countries, united by our mission to accelerate the global adoption of crypto. In this role, you will help build the future of crypto by developing secure, high-performance custody solutions for our institutional clients.

What You'll Do

• Collaborate with product managers, architects, and DevOps engineers to design and deliver secure, scalable, and high-performance custody solutions.
• Build and maintain new backend microservices in TypeScript and Node.js, powering custody, staking, and wallet services.
• Integrate with blockchain networks and external systems to support asset movements, transactions, and key management workflows.
• Contribute to frontend applications built with React and Next.js, ensuring clear operational visibility and seamless user experience.
• Develop event-driven systems using Kafka for real-time data processing and inter-service communication.
• Write reusable, testable, and efficient code, maintaining high standards for performance, observability, and fault tolerance.
• Collaborate across teams to design and optimize data models, APIs, and distributed architectures.
• Participate in technical reviews, mentor other engineers, and take ownership of services throughout their full lifecycle.

Requirements

• 5+ years of professional experience in fullstack or backend engineering within high-scale, high-availability systems.
• Expert-level proficiency in Node.js and TypeScript, with hands-on experience using NestJS or similar frameworks.
• Deep understanding of microservices, event-driven architectures, and CQRS/DDD design patterns.
• Proven ability to design and deliver RESTful APIs and asynchronous event-based communication systems.
• Strong experience with SQL databases and schema design for performance and reliability.
• Solid understanding of React and modern frontend best practices.
• Deep knowledge of state management (React Query, Context API, custom hooks).
• Experience with Next.js, Tailwind CSS, and component-driven architecture.
• Hands-on experience with Docker, CI/CD, and observability tools such as Prometheus and Splunk.
• Excellent collaboration and communication skills — capable of working effectively in distributed, cross-functional teams.

Nice to Have

• Understanding of crypto protocols, staking mechanisms, and the broader blockchain technology ecosystem.
• Experience with gRPC, Protocol Buffers.
• Hands-on experience with Rust.
• Background in financial systems, digital assets, and experience in custodial or other regulated environments.

What We Offer

• Competitive salary range of $75,000 to $120,000 per year.
• Fully remote work environment with flexible hours.
• Opportunity to work with a world-class team of crypto experts.
• Access to continuous learning and development resources.
• Inclusive company culture that values diversity and merit-based hiring.