fullstack engineer for crypto custody

Kraken; United States; Remote; USD 120,000 - 180,000; Full time

Job summary

Kraken is seeking a skilled fullstack/backend engineer to build scalable custody, staking, and wallet services. You will work across backend and frontend layers, driving API design, data models, and distributed architectures in a high-availability environment.

You will mentor teammates and own services from RFCs to deployment, partnering with product managers and DevOps to ensure performance and reliability across complex systems.

Qualifications

• 3+ 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, including React Query and Context API.

Responsibilities

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

Skills

Node.js

TypeScript

NestJS

Microservices

Event-driven

RESTful APIs

SQL databases

React

React Query

Next.js

Tailwind CSS

Docker

CI/CD

Prometheus

Splunk

Kafka

Tools

Docker

Prometheus

Splunk

Kafka

PostgreSQL

NestJS

Next.js

Job description

We may ask candidates to complete job-related skills or work-style assessments as part of our hiring process. These assessments evaluate competencies relevant to the role and are applied consistently across candidates for similar positions. Results are considered alongside experience and interviews, and are not the sole basis for any employment decision.

Payward Services is an enterprise infrastructure platform that enables companies to integrate trading, payments, funding, and digital asset services through a unified system. It provides liquidity, custody, compliance, risk management, and settlement capabilities for fintechs, banks, brokerages, and payment providers.

• Collaborate with product managers, architects, and DevOps engineers to design and deliver secure, scalable, high-performance custody solutions
• Build and maintain backend microservices in TypeScript and Node.js for custody, staking, and wallet services
• Integrate blockchain networks and external systems to support asset movements, transactions, and key management workflows
• Contribute to React and Next.js frontend applications, ensuring operational visibility and a seamless user experience
• Develop event-driven systems using Kafka for real-time data processing and inter-service communication
• Write reusable, testable, efficient code that meets 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 own services throughout their lifecycle, from RFCs and design to deployment and maintenance
• 3+ 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, including React Query, Context API, and 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 for working effectively in distributed, cross-functional teams
• Applications are accepted on an ongoing basis unless a specific application deadline is stated
• Candidates may redact or remove resume information identifying age, date of birth, or dates of attendance at or graduation from an educational institution
• Qualified applicants with criminal histories are considered in accordance with the San Francisco Fair Chance Ordinance
• Candidates may be asked to complete job-related skills or work-style assessments as part of the hiring process. Assessments evaluate role-relevant competencies, are applied consistently to candidates for similar roles, and are considered alongside experience and interviews; they are not the sole basis for employment decisions
• The employer is committed to equal opportunity and does not tolerate discrimination or harassment based on protected characteristics under federal, state, or local laws