Senior Web Developer

SDK and design system — create the design system and web components used across third-party applications, ensuring SDK compatibility across browsers, frameworks, and integration environments

Cross-platform consistency — collaborate with backend and mobile teams so the SDK behaves consistently across every platform and integration

Performance and build optimization — design low-latency, high-availability applications and optimize bundle size, tree-shaking, and build performance for SDK distribution

Full-stack integration — connect user-facing elements with server-side logic and integrate data storage solutions into cohesive, reliable systems

Code quality and security — write reusable, testable, and efficient code, and implement security and data protection throughout

Developer experience and releases — maintain high-quality documentation and DX for integrators, and design automated pipelines for publishing and versioning SDK releases

Within your first 6–12 months, you've shipped SDK components adopted by external integrators, raised the bar on developer experience and documentation, and own the pipeline that publishes and versions Yuno's web SDKs.

5+ years building production applications with React, with strong JavaScript and TypeScript

Solid command of the modern web stack — Node, CSS, Next.js, Storybook, and Emotion

Engineering fundamentals — OOP, Git, unit and E2E testing, and CI/CD

Build and packaging tooling (NPM / yarn), with an eye for bundle size and performance

AWS (S3, Amplify) and Docker

AI-assisted development — fluent use of tools like Claude Code, Cursor, or GitHub Copilot, and leveraging LLMs across design, implementation, debugging, testing, documentation, and code reviews

Autonomy and agile delivery — you own tasks end to end and work comfortably in SCRUM

English — advanced proficiency, written and spoken

Experience in the payments industry and integrating Payment Service Providers (PSPs)

Backend experience (e.g., NestJS) and familiarity with backend languages

Building custom workflows with AI agents, MCP servers, development assistants, or engineering automation platforms

Experience defining AI-driven development practices within an engineering team

Spanish proficiency

Competitive Compensation

Remote Work — you can work from everywhere

Home Office Bonus — a one-time allowance to set up your ideal home office

Work Equipment

Stock Options

Health Plan wherever you are

Flexible Days Off

Language, Professional, and Personal Growth courses