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Crymbo
Work format
remote
Work type
fulltime
English
B1
Grade
senior
2 weeks ago

Senior React (Next)

react next.js typescript javascript css-in-js redux zustand recoil rest graphql git ci/cd jest cypress
≈ 5 500
USD
#react #next #remote

Senior React (Next)

Salary is up to 5500 usd gross

FULL-TIME, REMOTE, b2b contract, location of the candidate and legal entity, bank account of the candidate – outside of Russia, Belarus and Turkey

they need someone that can work alone, without a UX designer if needed

Crymbo is an orchestration platform that simplifies and unifies digital assets operations for institutional investors, investment houses, hedge funds, exchanges, banks, EMIs, and payment service providers. The platform allows fragmented TradFi, CeFi & DeFi infrastructure to communicate through a single API, streamlining operations and optimizing revenue growth.

Role Description
• Develop and maintain responsive, high-performance web applications using React.js and Next.js.
• Optimize frontend architecture for scalability, maintainability, and performance.
• Implement state management using modern approaches (e.g., Redux, Zustand, or React Context).
• Collaborate with backend engineers to integrate APIs and optimize data flow.
• Ensure cross-browser compatibility and accessibility best practices.
• Write clean, maintainable, and testable code with TypeScript.
• Utilize Git and CI/CD pipelines to manage the development workflow.
• Debug and optimize applications for a smooth user experience.
• Stay updated with the latest frontend technologies and best practice

Qualifications
• 5+ years of commercial full-time React
• Expertise in Next.js, including SSR/ISR, middleware, and API routes.
• Strong knowledge of TypeScript, modern JavaScript (ES6+), and CSS-in-JS (e.g., Tailwind, Emotion, or Styled Components).
• Experience with state management libraries (Redux, Zustand, Recoil, or Context API).
• Familiarity with backend integration and API handling (REST & GraphQL).
• Hands-on experience with performance optimization and accessibility best practices.
• Proficiency with Git, CI/CD pipelines, and modern development workflows.
• Experience in testing frameworks (Jest, React Testing Library, Cypress).
• English is B1+

Bonus
• Experience with Web3.js, Ethers.js, or blockchain-based applications.
• Knowledge of Docker, Kubernetes, or cloud-based environments (AWS/GCP).
• Prior experience in fintech or digital asset platforms.