Senior Frontend Engineer

A leading provider and Developer of De. Fi infrastructure and software, building the next generation of on-chain finance and De. Fi liquidity infrastructure on Solana, and offering a dual-protocol system designed to help safeguard traders from major market events for the safety and growth of crypto worldwide. Their offer tackle current De.

Fi platforms reliance on over-collateralized lending, forcing users to lock up liquidity, juggle multiple protocols, and face high liquidation risks. Their solution enables under-collateralized borrowing, programmable margin accounts, and composable strategies, all through one seamless app. It unlocks capital efficiency, reduces risk, and makes De.

Fi more accessible and powerful. MISSIONS As a a Lead/Senior Front-End Engineer to own and drive the frontend of the Product's platform. You embody a foundational hire and will shape the company's product user experience, architecture, and frontend culture. As the go-to person for all things frontend, you'll:

• Lead FE development across the App portfolio, including margin dashboards, Recipes, restaking flows, and advanced De. Fi integrations.
• Design, implement, and maintain a scalable frontend architecture (React/TypeScript).
• Own Solana integrations: from transaction flows to real-time on-chain data visualization.
• Collaborate closely with design, backend, and product to define and deliver features.
• Establish best practices for code quality, testing, and deployment.
• Help build and mentor the frontend team as the App grows.

Responsibilities

• Lead FE vision: Define architecture, frameworks, and coding standards.
• Build & ship: Develop core UI/UX features with React, TypeScript, and Solana web3 libraries.
• Integrate deeply with Solana: Wallet adapters, transaction flows, margin accounts, adapters (e.g., Jupiter), and restaking systems.
• Optimize UX: Create responsive, real-time, high-performance interfaces.
• Collaborate: Partner with backend and product teams to deliver roadmap milestones.
• Mentor & scale: Guide future FE hires, review code, and foster engineering excellence.

Requirements

• Strong experience building and shipping production frontends (React + TypeScript).
• Proven Solana expertise: wallets, web3 libraries, transaction flows, and on-chain integrations.
• Experience with real-time data, state management, and error handling in blockchain UIs.
• Track record of leading projects or teams — ownership of architecture and delivery.
• Excellent communication and collaboration skills in startup environments.

Nice to have

• Experience with De. Fi protocols, margin trading, or restaking mechanics.
• Prior startup or founding engineer experience.
• Contributions to open-source Solana or De. Fi projects.

Benefits

Permanent role (Hybrid remote) in Paris (France) or other EU countries or US (EST times) Remote first company : flexibility to work fully remotely or at an office location of your preference within the European Union. Salary: to 220k USD (or 190 K€) per year on a full-time permanent work contract. Equity: 100-200 stock options vested over 4 years with a one-year cliff.

Benefits

healthcare and life insurance, retirement plan, sponsored transportation, gym, lunch card, home office equipment, and other perks. Recruitment process : Founder / CEO Interview to understand your background, motivations, and high-level alignment with the company’s mission. (career journey and goals, interest in the company and the role, culture fit assessment) : 45 minutes Technical Interview to assess technical skills and problem-solving ability relevant to the position.

(Practical problem-solving or coding exercise, discussion of past projects and technical decisions, evaluating depth of expertise and approach to challenges) : 60 minutes Group Interview to determine cultural and interpersonal fit (Collaboration and communication style, alignment with the company’s values, work ethic, ownership, and adaptability), team dynamics and personality alignment : 45 minutes Final Interview with the CEO to ensure mutual clarity and readiness to move forward.

(Expectations, offer details, next steps, remaining questions) : 30 minutes