Senior Frontend Developer, Next.js
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Job Description
Senior Frontend Developer developing high-performance web applications with Next.js at Definity. Collaborating with product, marketing, and operations teams for effective integrations.
Responsibilities:
- Design and build a high-performance website using Next.js
- Own the frontend architecture and deployment lifecycle on Vercel
- Implement best practices for performance, accessibility, and discoverability
- Integrate external systems such as billing, CRM, and content platforms
- Work independently, making technical decisions with minimal oversight
- Collaborate with product, marketing, and operations when integrations or data flows are involved
- Continuously improve build, deploy, and development workflows
- Ensure secure handling of credentials, webhooks, and environment variables
- Monitor performance and reliability, improving Core Web Vitals and overall site health
Requirements:
- Experience building modern web applications and production websites with Next.js (App Router and/or Pages Router)
- Strong proficiency with React and modern JavaScript/TypeScript
- Experience owning the deployment lifecycle on Vercel (deployments, previews, environment management)
- Solid understanding of modern technical SEO fundamentals, including: SSR and SSG, metadata management, Core Web Vitals, sitemap generation and robots configuration, page speed optimization and performance monitoring
- Accessibility basics (semantic HTML, performance-friendly components)
- Comfort integrating with third-party systems and APIs.
- Secure handling of API keys, webhooks, and environment variables.
- Familiarity with Git and modern version control workflows.
- CI/CD concepts.
- Advanced English.
Benefits:
- Professional development opportunities
- Flexible working arrangements
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