Middle Full-Stack Developer (Next.js, Node.js)

Ruby Labs is a leading tech company that creates and operates innovative consumer products across the health, education, and entertainment industries. The company focuses on consumer-led products and has innovative teams driving future developments.

• Minimum 2 years of commercial experience with Next.js (v14.x/v15.x), having worked on at least two recent projects using it as the primary frontend framework.
• At least 2 years of hands-on experience with Node.js frameworks such as NestJS, Fastify, or Hono, with understanding of architectural trade-offs.
• Strong proficiency with PostgreSQL and/or Supabase, including query optimization and schema design.
• Practical knowledge of Prisma or Drizzle ORM, including building complex queries and managing migrations.
• Profound understanding of caching strategies (in-memory, distributed cache, CDN) and experience applying them effectively (e.g., Redis).
• Full proficiency with Docker and docker-compose for containerized applications.
• Experience with background workers and message queues (e.g., BullMQ, RabbitMQ) for asynchronous tasks.
• Proven experience in building secure systems, protecting against common vulnerabilities (OWASP Top 10), configuring CSP, CORS, securing APIs, and hardening hosting environments.
• Experience with analytics tools (Google Analytics, PostHog, Mixpanel) and A/B testing platforms.

Nice to have:

• Experience with CI/CD pipelines (GitHub Actions, GitLab CI).
• Experience with monorepo tools (Turborepo, Nx).
• Experience writing unit and integration tests (Jest, Playwright).

• FullStack Development: Develop complex features and modules using Next.js for the frontend and Node.js for the backend.
• Process Management: Implement and optimize Agile methodologies (Scrum/Kanban), including sprint planning, task estimation, and delivery oversight.
• Quality Assurance: Enforce best practices in coding, testing, caching, and performance monitoring to ensure a robust and scalable application.
• Security: Design and implement comprehensive security measures at the application, infrastructure, and data levels.

Applicants must be located within approximately ±4 hours of the Central European Time (CET) zone to ensure optimal collaboration and communication during working hours.