Definity · 1 month ago
Senior Frontend Developer (Next.js)
United States
Full-time
Remote
Senior LevelDefinity is a technology company founded in 2004, partnering with organizations like Tesla and Harvard. They are seeking a Senior Frontend Developer (Next.js) to take end-to-end ownership of a high-performance modern website, focusing on performance, reliability, and maintainability while collaborating with various teams.
ConsultingDigital MarketingSEO
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
Qualification
Required
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 (not keyword strategy), 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
Bachelor's degree in Computer Science, Software Engineering, or a related field (or equivalent practical experience)
Preferred
Experience using AI-assisted development tools to accelerate delivery
Familiarity with headless CMS patterns and content pipelines
Experience with edge functions or serverless APIs
Prior work on marketing or product-led websites with real traffic and conversions
Company
Definity
Definity is a nearshore technology partner specializing in custom digital solutions, AI innovation, and business applications.
Founded in 2004
51-200 employees
Funding
Current Stage
Growth StageRecent News
2025-07-31
Company data provided by crunchbase