Middle Full-Stack Developer

• Required Technical Skills (Hard Skills): • Next.js: A minimum of 2 years of active, commercial experience with Next.js (v14.x/v15.x). Must have worked on at least two recent projects where Next.js was the primary frontend framework. • NodeJS: Deep knowledge and at least 2 years of hands-on experience with a modern framework such as NestJS, Fastify, or Hono. A clear understanding of their architectural trade-offs is required. • Databases: Strong proficiency with PostgreSQL and/or Supabase, including query optimization and schema design. • ORM: In-depth, practical knowledge of Prisma or Drizzle ORM, with experience in building complex queries and managing migrations. • Caching: A profound understanding of caching strategies (e.g., in-memory, distributed cache, CDN) and the ability to apply them effectively to optimize performance (e.g., using Redis). • Docker: Full proficiency with Docker for creating, managing, and deploying containerized applications. Experience with docker-compose is essential. • Workers & Queues: Understanding and practical application of background workers and message queues (e.g., BullMQ, RabbitMQ) for handling asynchronous tasks. • Security: Proven experience in building secure systems, including protecting against common vulnerabilities (OWASP Top 10), configuring Content Security Policy (CSP), CORS, securing APIs, and hardening hosting environments. • Analytics & A/B Testing: Experience working with analytics tools (e.g., Google Analytics, PostHog, Mixpanel) and platforms for A/B testing. • Communication: Excellent communication skills, with the ability to articulate complex technical concepts clearly to both technical and non-technical stakeholders. • Product Mindset: The ability to understand business objectives and translate them into technical solutions that deliver real value to users. • Accountability: A proactive, results-oriented approach and a willingness to take ownership of the team's and the product's success. • Experience with CI/CD pipelines (e.g., GitHub Actions, GitLab CI). • Experience with monorepo tools (e.g., Turborepo, Nx). • Experience writing unit and integration tests (e.g., Jest, Playwright). • Ruby Labs operates within the CET (Central European Time) zone. Applicants from any country are welcome to apply for the position as long as they are located within approximately ± 4 hours of CET. This ensures optimal collaboration and communication during working hours.