Senior Backend Engineer (Node.js)

At Ontopo, we build technology that powers the restaurant industry at scale.

Our platform supports thousands of restaurants and operates under high traffic, real-time data processing, and strict performance and availability requirements.

We are looking for a Senior Backend Engineer to work on large, independent, end-to-end backend projects, built with modern technologies and deeply embedded in the core of our system.

This is a backend-focused role - over 90% Backend development, with no real dependency on frontend work.

What You’ll Do:

• Design, build, and maintain backend services that are part of the system’s core.
• Work on large, end-to-end backend projects - from design and architecture to production.
• Develop high-scale microservices using Node.js and NestJS.
• Build and evolve backend systems with a strong focus on performance, scalability, and availability.
• Take ownership of backend components and services you build.
• Work on complex tasks that are not fully defined, and turn them into solid technical solutions.
• Actively use AI tools to improve development speed, code quality, and problem solving.
• Collaborate closely with other experienced engineers in a strong backend team.

What We’re Looking For:

• 5+ years of experience as a Backend Engineer.
• Strong hands-on experience with Node.js, preferably NestJS.
• Proven experience building backend systems and microservices.
• Experience working on core systems, not only peripheral services.
• Solid understanding of performance optimization and high-availability architectures.
• Ability to work independently while taking responsibility for end-to-end delivery.
• Strong interest in AI and frequent, practical use of AI tools in daily work.
• Experience working in high-scale production environments.

Why Join Ontopo:

• Work on core backend systems with real scale and real impact.
• Large, independent projects with full end-to-end ownership.
• Modern tech stack and an engineering-driven culture.
• Challenging technical work without unnecessary hierarchy or politics.
• Hybrid work model and a strong, collaborative engineering team.