Payward

full stack developer for crypto custody

In short

Full stack developer role building custody, staking, and wallet microservices in Node.js/TypeScript, plus React/Next.js frontend work, for Payward (parent of Kraken and other fintech/crypto products). Fully remote, mid-level position requiring 3+ years of fullstack/backend experience with Node.js, TypeScript, NestJS, microservices, SQL, React, and CI/CD tooling. Crypto/blockchain, Rust, and regulated-environment experience are pluses rather than requirements.

About Payward
Payward is the parent company behind Kraken, NinjaTrader, Breakout, xStocks, Payward Services, and CF Benchmarks. It has spent 15 years building a globally accessible financial infrastructure platform. Payward Services provides an enterprise infrastructure platform that enables companies to integrate trading, payments, funding, and digital asset services through a unified system, including custody, compliance, risk management, and settlement capabilities.
Responsibilities
•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
Requirements
•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
Nice to have
•Understanding of crypto protocols, staking mechanisms, and the broader blockchain technology ecosystem
•Experience with gRPC and Protocol Buffers
•Hands-on experience with Rust
•Background in financial systems and digital assets, and experience in custodial or other regulated environments
Hiring process
•Applications are accepted on an ongoing basis unless a specific application deadline is stated in the job posting
•Candidates may be asked to complete job-related skills or work-style assessments as part of the hiring process. Results are considered alongside experience and interviews and are not the sole basis for any employment decision
•Qualified applicants with criminal histories are considered in a manner consistent with the requirements of the San Francisco Fair Chance Ordinance

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