Senior Node.js Developer

About the Role

We are looking for a Senior Node.js Engineer with strong commercial experience in AI to build and develop production-ready, AI-powered features. The role combines strong backend engineering in Node.js with hands-on work on AI solutions, experimentation, evaluation and integration into a live product.

The role will suit someone who gets satisfaction from seeing their work used by real customers—not solely from conducting research or experimenting with models.

Responsibilities:

• Design and develop scalable backend services and APIs using Node.js

• Build and integrate AI-powered features into production systems

• Research different AI approaches, run experiments and evaluate results to identify the most suitable solutions

• Develop Python-based components for AI/ML workflows, data processing and experimentation

• Build prototypes and transform successful approaches into reliable, production-ready solutions

• Integrate LLMs, AI models and external AI services with existing backend systems

• Define evaluation methods and metrics to measure the quality and performance of AI solutions

• Work closely with engineering and product teams on architecture and implementation decisions

• Take ownership of features from technical design and experimentation through implementation and deployment

• Monitor and improve existing solutions based on production results, performance and user feedback

Requirements:

• Strong commercial experience with Node.js and backend development

• At least 2 years of commercial experience working with AI/ML solutions

• Professional experience with Python

• Hands-on experience building and integrating AI-powered functionality into real-world products

• Experience taking AI experiments or prototypes into production

• Ability to research different technical approaches, test them and make decisions based on results

• Understanding of how to evaluate AI-based solutions, including quality, accuracy, latency and cost

• Strong understanding of backend architecture, APIs and integrations

• Ability to independently own technically complex features from idea to production

Highly Valued

• Some experience with JavaScript, as other parts of the platform use it

• Previous experience in travel technology, hospitality, marketplaces or booking platforms

What we offer:

• Long-term cooperation on an international project.

• Fully remote work.

• A collaborative environment with experienced engineers.

• Private medical care.

• Multisport card.

• Flexible working arrangements.