Senior Payments & Blockchain Engineer

Kraken; United Kingdom; On-site; GBP 85,000 - 120,000; Full time

Job summary

Kraken is seeking a Senior Software Engineer to join the Payments & Blockchain team focused on payments systems. You will design and build scalable payment processing software, integrating with providers and safeguarding client funds.

Craft seamless user experiences, implement robust security, and lead initiatives across React/TypeScript codebases. This role emphasizes collaboration, innovation, and technical excellence within a fast-growing fintech environment.

Qualifications

• 5+ years of software development experience, web/mobile focus.
• Strong React/TypeScript expertise.
• Experience with Next.js, REST APIs, and WebSockets.
• Experience with frontend testing frameworks.
• Familiarity with modern front-end build pipelines.
• Excellent written and verbal English.

Responsibilities

• Design, develop, and maintain payment processing systems using React.js and related technologies.
• Build and refine transaction experiences to optimize speed, security, and reliability.
• Ensure onboarding experiences are intuitive to reduce friction and improve trust.
• Develop features that enhance engagement, retention, and loyalty in payments ecosystem.
• Set high-quality, secure code standards and lead development of complex fintech software.
• Mentor engineers and drive process improvements in financial software development.

Skills

JavaScript/TypeScript

React

React Native

Next.js

REST APIs

WebSockets

Frontend testing

Build tooling

UI/UX

English proficiency

Job description

Kraken is seeking a Senior Software Engineer to join the Payments & Blockchain team focused on payments systems. You will design and build scalable payment processing software, integrating with providers and safeguarding client funds.

Craft seamless user experiences, implement robust security, and lead initiatives across React/TypeScript codebases. This role emphasizes collaboration, innovation, and technical excellence within a fast-growing fintech environment.