Lead Engineer, Frontier Traders à France

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Lead Engineer, Frontier Traders based in France. Join an innovative blockchain ecosystem at the intersection of decentralised finance, trading infrastructure, and high-performance product engineering. In this role, you will take end-to-end technical ownership of a data-intensive trading platform serving professional traders, market makers, and high-frequency trading firms. You will build polished, responsive interfaces that transform complex market activity, portfolio data, and trading incentives into intuitive user experiences. Combining frontend expertise with full-stack engineering, you will shape architecture, develop real-time features, and ensure data accuracy, performance, and reliability under demanding market conditions. Working closely with traders, ecosystem partners, designers, and product stakeholders, you will have significant autonomy to influence the roadmap and deliver impactful solutions. This is an opportunity to help advance decentralised financial infrastructure while setting high engineering standards in a fast-moving, product-focused environment. Accountabilities: - Own the technical direction, architecture, and end-to-end delivery of the trading platform, with a particular focus on the trader-facing product, user experience, and continuous product improvement. - Design and develop sophisticated, responsive interfaces that make complex market, portfolio, trading, and rewards data accessible and intuitive for professional users. - Build and optimise real-time product experiences, including portfolio dashboards, trading activity feeds, leaderboards, campaign interfaces, prize pools, VIP tier progression, and rebate tracking. - Lead the development lifecycle of new features and products, from initial ideas and architectural decisions through implementation, launch, monitoring, and iteration.

- Work across frontend applications, APIs, backend services, databases, and data infrastructure to deliver cohesive, scalable product experiences. - Collaborate with onchain data and indexing infrastructure teams to ensure trading activity across spot and perpetuals markets is accurately captured, processed, and presented. - Manage integrations with ecosystem partners, including decentralised exchanges, perpetuals trading platforms, launchpads, wallets, and data providers, translating diverse technical capabilities into consistent user experiences. - Engage directly with traders, proprietary trading firms, and market makers to understand their workflows, gather feedback, identify unmet needs, and translate insights into product improvements. - Establish and maintain high engineering standards across frontend architecture, application performance, code quality, testing, observability, and system reliability. - Make informed build-versus-integrate decisions, balancing development speed, maintainability, and product quality to meet the expectations of sophisticated trading users. - Partner with design, product, trading, and growth stakeholders to shape the product roadmap, prioritise opportunities, and define effective technical and user experience solutions. - Operate independently in an evolving environment, taking ownership of complex challenges even when they extend beyond your primary area of expertise. Requirements: - A proven track record of building and launching user-facing products end to end, with clear personal ownership of technical decisions, implementation, and post-launch improvements. - Deep expertise in modern frontend development, particularly TypeScript or JavaScript and frameworks such as React or Next. js, with experience building complex, data-rich applications. - Strong full-stack engineering fundamentals and the ability to work comfortably across frontend applications, APIs, backend services, databases, and data infrastructure.