Senior AI Backend (Node.js) Developer

MEDvidi is looking for a Senior Backend Node.JS Developer to join our AI Automation team and lead the development of AI-driven integrations within our telemedicine platform.

In this role, you will design and scale backend systems that connect our core product with AI services to automate workflows for patients and healthcare providers. You will work on production-grade systems with a strong focus on reliability, security, and user experience, and see your solutions directly improve how thousands of people interact with our platform.

Responsibilities:

• Design and build backend architecture for AI-powered automation systems, focusing on performance, scalability, and resilience.
• Integrate and scale LLM-based product features, working closely with AI engineers and product teams.
• Implement and evolve agent-based systems (e.g., ReAct, supervisor-agent models), supporting complex decision-making flows.
• Optimize Retrieval-Augmented Generation (RAG) pipelines and LLM context enrichment using structured and unstructured data.
• Develop robust APIs for internal services and external integrations.
• Ensure strong observability, monitoring, and alerting practices using tools like Grafana and OpenSearch.
• Participate in code reviews, contribute to architecture discussions, and promote engineering excellence.
• Maintain high-quality technical documentation for newly-designed systems and APIs to ensure clarity and knowledge sharing within the team.
• Collaborate with cross-functional teams to align backend systems with product goals and user needs.

Requirements:

• 5+ years of commercial backend development with Node.js (product companies, ideally SaaS)
• Strong experience in product environments and startup-style teams (ownership, fast iteration, impact-driven development)
• Solid expertise in designing scalable, high-performance backend systems and robust APIs
• Hands-on experience integrating LLMs into real production systems (not demos or pet projects)
• Strong knowledge of RAG pipelines: embeddings, vector databases, retrieval strategies, ranking models, top_k tuning
• Experience with LLM agents and orchestration tools (LangGraph preferred; AutoGen, SmolAgents, or similar)
• Understanding of ReAct patterns, agent roles, and agent–supervisor architectures
• Skilled in prompt engineering with measurable quality improvements (experience with evaluation frameworks)
• Ability to work with structured LLM outputs (JSON/YAML), including validation and reliability techniques beyond prompts
• Experience with AWS, PostgreSQL (schema design and basic performance optimization)
• Good understanding of observability and monitoring (Grafana, OpenSearch or similar)
• Strong engineering practices: testing, CI/CD, production reliability
• Product-oriented mindset, focused on building high-quality, user-centered automation
• Fluent Russian; English B2+
• Ability to work CET hours, located outside Belarus and Russia, B2B format with own equipment

Nice to have:

• Skilled in prompt engineering with measurable quality improvements (e.g., using AI Eval frameworks).

Why Join MEDvidi:

• A chance to contribute to a high-impact, product-driven company in the medical tech space.
• Clear growth opportunities and a competitive compensation package.
• Fully remote collaboration from any EU country under a B2B model.
• Health insurance is available after the probation period.
• Sports & wellness compensation.
• 19 paid vacation days annually.
• 4 additional wellness days each year.
• Paid sick leave for the first 5 working days.
• Thoughtful gifts for key life events.
• Personalized English lessons through Preply.

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