November Five

Senior Frontend Engineer, React

November Five

full-time

Posted on:

Location Type: Hybrid

Location: Antwerp • 🇧🇪 Belgium

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Job Level

Senior

Tech Stack

ApolloGraphQLJavaScriptNext.jsReactReact NativeReduxTypeScriptWebpack

About the role

  • Take technical ownership of frontend projects, setting standards for code quality, architecture, and best practices.
  • Design, build, and maintain advanced single-page applications using React, TypeScript, and modern frontend technologies.
  • Lead technical discussions, code reviews, and architectural decisions for web products.
  • Collaborate with product managers, designers, and backend teams to define, design, and ship impactful new features.
  • Drive the adoption of best practices in testing, automation, and continuous integration/deployment (CI/CD).
  • Ensure the best possible performance, accessibility, and user experience across browsers and devices.
  • Integrate seamlessly with backend APIs and headless CMS platforms such as DatoCMS, optimizing for reliability, scalability, and content workflow.
  • Stay up-to-date with the latest trends, libraries, and technologies in frontend development, proactively introducing improvements to our stack.
  • Mentor and support junior engineers, sharing knowledge and promoting best practices.
  • Foster a culture of ownership, innovation, and continuous improvement within the team.

Requirements

  • 4+ years of professional experience developing and maintaining high-quality web applications, with a strong focus on React and the modern JavaScript/TypeScript ecosystem.
  • Deep technical expertise in React, ES6+, and related libraries and frameworks (e.g., Redux, Apollo, GraphQL, Next.js).
  • Demonstrated experience leading technical projects, making architectural decisions, and mentoring other engineers.
  • Strong understanding of frontend architecture, component design, state management, and performance optimization (e.g., RAIL, PRPL).
  • Experience building and maintaining build pipelines using Webpack, Vite, or similar, and working with CI/CD tooling.
  • Hands-on experience integrating and working with modern headless CMS platforms (such as DatoCMS, Contentful, Sanity, or similar), including schema design, API integration, and optimizing content workflows.
  • Familiarity with progressive enhancement, accessibility (WCAG), and web standards.
  • Experience with service workers, PWA development, and modern frontend innovations (e.g., WebAssembly).
  • Experience integrating with backend APIs and working in multidisciplinary, agile teams.
  • Excellent problem-solving, debugging, and communication skills.
  • Passion for learning, sharing knowledge, and mentoring others.
  • Experience with React Native is a strong plus.
  • Bachelor’s degree in Computer Science, Engineering, or equivalent practical experience.
  • Fluency in English; Dutch is a plus.
Benefits
  • Because the work matters. And so do our people.
  • Ship real products for brands like Coca-Cola, Le Pain Quotidien & Telenet.
  • Work in a high-standard, fast-paced, no-BS team.
  • Launch work that actually lands — no endless cycles, just real impact.
  • Enjoy full trust, a fully optimized benefits package with options for a mobility budget or company car, smartphone budget, mobile subscription, MacBook, pension plan, hospitalization insurance, net expenses, meal vouchers, 12 additional holidays & shared rewards
  • Work from a stunning Antwerp HQ

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard skills
ReactTypeScriptJavaScriptES6+ReduxApolloGraphQLNext.jsWebpackVite
Soft skills
leadershipmentoringproblem-solvingcommunicationcollaborationinnovationcontinuous improvementcode reviewstechnical discussionsownership
Certifications
Bachelor’s degree in Computer ScienceBachelor’s degree in Engineering