Senior Node.js Developer
First seen by Alion on Oct 4, 2026.
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.
Tech stack
- Python
- JavaScript
- Machine Learning
- AI
- Backend
- Node.js