Fullstack Engineer - Payward Services - Custody

About the role

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Fullstack Engineer - Payward Services - Custody based in Brazil.

Join a globally distributed engineering team building secure, scalable infrastructure for digital asset custody and settlement. In this role, you will contribute to the development of backend services and frontend applications that support wallet management, staking, transaction processing, and asset movements. You will work across distributed architectures, blockchain integrations, and event-driven systems, helping deliver reliable financial technology at scale. Collaborating with product managers, architects, and DevOps engineers, you will influence technical decisions and take ownership of services throughout their lifecycle. This is an opportunity to work in a collaborative, security-focused environment where engineering excellence, transparency, and innovation are central to the mission.

Accountabilities -

Design, build, and maintain secure, scalable, high-performance custody solutions in collaboration with product managers, architects, and DevOps engineers.

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Develop backend microservices using TypeScript and Node.js to power custody, staking, and wallet services.

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Integrate blockchain networks and external systems to support digital asset movements, transactions, and key management workflows.

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Contribute to frontend applications built with React and Next.js, delivering intuitive interfaces and clear operational visibility.

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Develop event-driven systems using Kafka for real-time data processing and communication between services.

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Write reusable, testable, and efficient code while maintaining high standards for performance, observability, reliability, and fault tolerance.

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Collaborate across teams to design and optimize APIs, data models, and distributed architectures.

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Participate in technical reviews, contribute to architecture proposals and RFCs, and support the development of other engineers.

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Take ownership of services throughout their full lifecycle, from design and implementation to deployment, monitoring, and maintenance.

Requirements:

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At least 3 years of professional experience in fullstack or backend engineering, preferably working with high-scale, high-availability systems.

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Expert-level proficiency in Node.js and TypeScript, with practical experience using NestJS or similar frameworks.

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Strong understanding of microservices, event-driven architectures, and CQRS/DDD design patterns.

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Proven experience designing and delivering RESTful APIs and asynchronous event-based communication systems.

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Solid experience with SQL databases, including schema design, performance optimization, and reliability.