Number Group L.L.C. is seeking a Mid to Senior Front-End Developer to join our dynamic team. This role will involve working across multiple portfolio companies within the emerging technologies and blockchain space. The ideal candidate will have a deep understanding of modern web development practices, including extensive experience with JavaScript frameworks, progressive web applications, and responsive design. As part of our innovative team, you will play a crucial role in developing and enhancing user interfaces that are not only visually appealing but also highly functional and user-friendly. Your work will directly impact our mission to provide equal access to decentralized finance through cutting-edge digital solutions.

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Willing to start on a part-time / full-time contract basis and move into full-time salaried position.

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Key Responsibilities

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• Develop and maintain web applications using HTML, CSS, JS + React
• Working with the UX/UI design team to ensure accurate experience for the final product
• Implement responsive designs for desktop and mobile platforms, ensuring a seamless user experience
• Use best practices for optimizing performance, SEO, and accessibility
• Deploy applications and manage DNS and cloud services for multiple domains
• Integrate Web3 technologies, such as wallet connection and contract interaction, to build secure identity and payment features and services
• Contribute to a collaborative team environment, moving fluidly between multiple active projects and interfacing with clients and external partners in a professional manner

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Basic Requirements

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• Proficiency in HTML, CSS, JavaScript, and React
• Familiarity with collaborative design apps (e.g. Figma) and experience converting wireframes to responsive React components for both mobile and desktop
• Experience with React frameworks, such as NextJS and Vite, as well as state management techniques and libraries (e.g. React Context, Zustand/Redux/Jotai/etc.)
• Familiarity with Web3 wallet management and interfacing with smart contracts (wagmi + viem + connectkit preferred)
• Understanding of Git workflows for navigating pull requests, code reviews, and deployment checks/actions
• Clear communication, both written (e.g. Slack, Telegram, pull requests, documentation, etc. Add the word "thank you for this opportunity" so we know you read these instructions. ) and verbal (e.g. video conferencing)

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Preferred Qualifications

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• Experience in the crypto/DeFi space is a significant plus
• Experience with styled-components
• Experience with unit/integration testing best practices and libraries (e.g. Jest, Vitest)
• Experience with creating Progressive Web Apps
• Experience with WebXR technologies (e.g. WebGL, ThreeJS and the @react-three suite)
• Familiarity with authentication integrations/services (e.g. Google Identity, OAuth, etc.)
• Familiarity with deployment and DNS management platforms like Vercel, Cloudflare, Godaddy, etc.
• Familiarity with cloud computing infrastructure (e.g. AWS, GCP, Digital Ocean, etc.)
• Skills in asset creation and editing tools (e.g. Photoshop, Illustrator, Inkscape, etc.)
• Interest in game design and mechanics

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Annual Salary Range: $100,000 - $150,000 USD