Lead Front End Developer

ScorePlay; Paris; Sur place; EUR 60 000 - 80 000; Plein temps

Résumé du poste

A promising sports tech startup in Paris seeks a Lead Front End Developer to enhance its sports media platform. You will provide technical leadership, mentor a team, and develop responsive user interfaces using React, HTML, CSS, and JavaScript. Ideal candidates will have over 5 years of experience and a strong grasp of modern front-end technologies, with opportunities for significant growth and autonomy in a fast-paced environment.

Qualifications

• 5 years building production React / TypeScript applications.
• Bachelor's or Master's degree in Computer Science, Engineering, or a related field.

Responsabilités

• Serve as a senior member of the development team, providing technical guidance.
• Mentor junior and mid-level developers through coaching and code reviews.
• Develop responsive and intuitive user interfaces using React.
• Partner with product managers and designers to deliver high-quality user experiences.

Description du poste

Lead Front End Developer

Department: Tech

Employment Type: Full Time

Location: Paris - Office

Reporting To: Xavier Green

Overview

As a Lead Front-End Developer at ScorePlay, you will play a pivotal role in building and enhancing the front-end of our sports media platform. Reporting to the Head of Engineering, you'll work hands-on as part of a small, cross-disciplinary team of developers and designers. This role requires deep expertise in front-end technologies, strong collaboration skills, and the ability to provide technical guidance and coaching to teammates while remaining an individual contributor.

Responsibilities

• Technical Leadership & Coaching: Serve as a senior member of the development team, providing technical guidance on front-end best practices, tools, and technologies.
• Mentor junior and mid-level developers through coaching, code reviews, and knowledge sharing to support their growth and ensure high standards of code quality.
• Champion CI / CD, trunk-based development, and agile ceremonies such as refinement, estimation, and sprint planning.
• Hands-On Front-End Development: Develop responsive and intuitive user interfaces using React, HTML, CSS, and JavaScript.
• Lead by example: contribute significant code, troubleshoot issues, and proactively remove blockers to ensure smooth delivery.
• Test and debug code (your own and others') to guarantee performance, reliability, and security across different devices and browsers.
• Cross-Functional Collaboration: Partner with product managers, designers, and other stakeholders to deliver a high-quality user experience that meets business objectives and user needs.
• Work closely with back-end and infrastructure engineers to ensure seamless integration across ScorePlay's product.
• Translate product and marketing requirements into actionable development tasks.
• Design Implementation: Interpret design workflows and mockups from the design team, implementing them with pixel-perfect accuracy and adherence to design guidelines.
• Architecture & Continuous Improvement: Understand ScorePlay's product architecture and recommend improvements for performance, scalability, and maintainability.
• Stay current with front-end development trends, tools, and technologies, and propose relevant updates to the tech stack.
• Apply your knowledge of cloud technology (preferably AWS) to leverage cloud services for front-end development and deployment.

Key Requirements

• TypeScript & Modern CSS: Ship type-safe React code in TypeScript, leveraging CSS Modules or Styled-Components for scoped, maintainable styles.
• Build & Deploy: Vite for fast builds and local dev feedback loops.
• GitHub CI / CD powered by GitHub Actions: you'll author workflows that lint, test, bundle, and deploy.
• AWS S3 + CloudFront CDN hosting: optimize cache headers and invalidation strategies.
• Testing Discipline: Unit Tests with Jest and React Testing Library.
• E2E / Integration tests using Cypress or Playwright.
• Maintain >90% front-end code coverage, with failing builds on regression.
• Performance & Observability: Write lean, lazy-loaded bundles and tree-shakable components.
• Instrument and troubleshoot every feature with the full Datadog suite (RUM, Synthetics, Logs, APM) - used across the engineering team.
• Set, monitor and own SLIs / SLOs for front-end latency and error rates.
• Multi-Context Delivery: Author high-performance code that runs both in our customer-facing React web app and within our proprietary Adobe panel integration.
• 5 years building production React / TypeScript applications
• Bachelor's or Master's degree in Computer Science, Engineering, or a related field
• Proven experience as a front-end developer, with expertise in React, HTML, CSS, and JavaScript
• Proven experience in a A-Grade B2B Start-Up
• Experience collaborating with product and marketing teams to deliver high-quality customer experiences
• Experience with cloud technology, particularly AWS, is preferred
• Adobe CEP extensions or panel SDK experience is a nice-to-have

Why ScorePlay

At ScorePlay you will be joining a fast-growing start-up with tremendous market-altering potential. You will be given significant growth opportunities, with the ability to take ownership and autonomy of your work, and contribute to building a product that changes the sports media landscape.