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

TL;DR

Middle Full-Stack Developer (Next.js/Node.js): Building and optimizing web SaaS features across the full stack with an accent on secure, scalable solutions using Next.js and Node.js. Focus on end-to-end feature ownership, best engineering practices, and rapid deployment in a fast-moving product environment.

Location: Remote (CET ± 4 hours). Applicants must be located within approximately ± 4 hours of Central European Time (CET), including but not limited to Ukraine, Kazakhstan, Georgia, European Union, Israel, Moldova, Serbia, and North Macedonia.

Company

Ruby Labs is a leading tech company creating innovative consumer products across health, education, and entertainment industries.

What you will do

• Develop complex full-stack features and modules using Next.js for the frontend and Node.js for the backend.
• Implement and optimize Agile methodologies, including sprint planning and task estimation.
• Ensure application quality, robustness, and scalability through best practices in coding, testing, caching, and performance monitoring.
• Design and implement comprehensive security measures at application, infrastructure, and data levels.
• Collaborate with Product, Design, and Engineering to deliver clean, scalable, and secure solutions.

Requirements

• Next.js: A minimum of 2 years of active, commercial experience with v14.x/v15.x on at least two recent projects.
• Node.js: At least 2 years of hands-on experience with a modern framework (NestJS, Fastify, Hono) and understanding of architectural trade-offs.
• Databases: Strong proficiency with PostgreSQL and/or Supabase, including query optimization and schema design.
• ORM: In-depth knowledge of Prisma or Drizzle ORM with experience in complex queries and migrations.
• Caching: Profound understanding of caching strategies (in-memory, distributed cache, CDN) and effective application (e.g., Redis).
• Docker: Full proficiency with Docker for containerized applications and docker-compose.
• Security: Proven experience building secure systems, including protection against OWASP Top 10 vulnerabilities, CSP, CORS, and API hardening.
• English: B2 required for excellent communication with technical and non-technical stakeholders.

Nice to have

• 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).

Culture & Benefits

• Remote work environment with freedom to work from anywhere.
• Unlimited paid time off (PTO) to recharge.
• Paid national holidays.
• Company-provided MacBook for seamless productivity.
• Flexible Independent Contractor Agreement offering autonomy and entrepreneurial opportunities.

Hiring process

• Application review (3–5 days).
• Recruiter Screening (40 minutes).
• Technical Interview (60 minutes).
• Final Interview (30 minutes).