Senior Fullstack Engineer

Job description

Location: Remote - Europe preferred, must be able to work European hours Remote | Full-time Compensation: $120K - $150K Our client is a dynamic, forward-thinking, fully remote organization with an ambitious roadmap and a strong commitment to engineering excellence. Seeking a Senior Fullstack Engineer to work at the intersection of frontend and backend development. In this role, the engineer will build and maintain both a React-based trading user interface and the TypeScript backend services that power high-performance trading platforms. The position involves full feature ownership—from crafting responsive, real-time interfaces to designing the APIs, data pipelines, and indexing solutions that feed them. The ideal candidate possesses a strong passion for trading, engineering rigor, security, and velocity, backed by over six years of professional experience and a dedication to code quality and state-of-the-art software testing practices. Key Responsibilities Frontend Development & Performance Build and maintain the React-based trading user interface. Implement dynamic, interactive interfaces for real-time data, including live order book updates, price feeds, and trade executions via WebSockets. Own component architecture, state management, and responsive design. Optimize rendering, minimize load times, and ensure smooth, low-latency interactions under heavy data loads. Collaborate closely with product and design teams to translate complex requirements into intuitive user interfaces. Backend Development & Data Infrastructure Design and maintain TypeScript services, including REST APIs, WebSocket servers, and background services. Design and deliver event-driven pipelines that ingest and process pricing and account data. Own REST and WebSocket API contracts (OpenAPI / AsyncAPI specs), ensure smooth data flow between frontend and backend, and maintain API documentation. Interact with on-chain data, index blockchain events, and bridge smart contracts with off-chain services. Quality, Security & Collaboration Develop and maintain comprehensive unit, integration, and end-to-end tests across frontend and backend systems. Uphold continuous integration (CI) quality gates and rigorous code review standards. Work closely with cross-functional teams, including product, design, and quantitative specialists. Requirements Minimum Qualifications Experience: 6+ years of profes…