JR-191359 Node.js Developer

Job (Project) Description:

We are looking for a senior backend engineer with strong Node.js (or Python) / TypeScript experience and hands-on expertise in AWS Bedrock to design and build production-grade AI agents and agentic workflows. This role is focused on backend and platform implementation of LLM-powered systems: multi-step orchestration, tool calling, stateful workflows, retrieval, integrations, guardrails, observability, and reliable production delivery. We are primarily a Node.js / TypeScript environment for this stream, so experience building AI systems in JavaScript/TypeScript is essential.

The position is fully remote and requires working in the CET time zone.

Locations:

• Poland
• Hungary
• Bulgaria
• Ukraine
• Romania
• Portugal

Responsibilities:

• Build and evolve AI-driven backend services and agentic systems in Node.js / TypeScript.
• Use AWS Bedrock to implement LLM-based workflows, tool calling, structured generation, and orchestration logic for enterprise use cases.
• Design backend architecture for AI agents, including workflow state, execution control, retries, fallbacks, auditability, and observability.
• Create integrations between AI services and enterprise platforms, APIs, and data sources.
• Implement RAG-oriented and context-building pipelines to ground AI responses in relevant data.
• Improve production performance of AI systems across response quality, latency, stability, and cost.
• Help define engineering standards and reusable patterns for building AI applications in the company's Node.js / TypeScript stack.
• Work closely with cross-functional stakeholders to convert business scenarios into reliable AI backend solutions deployable in AWS.
• Prototype new ideas quickly, then harden them into maintainable production services.

Requirements:

Core Backend Engineering

• 3+ years of production experience with Node.js or Python.
• Strong TypeScript skills in production codebases.
• Experience with NestJS or similar backend frameworks.
• Solid API engineering skills: REST, integrations, auth flows, retries, error handling.
• Experience with asynchronous processing: queues, workers, background jobs, multi-step workflows.
• Experience with Docker and cloud deployment fundamentals.
• Experience working with production databases such as PostgreSQL, DynamoDB, or Redis-backed systems.
• Strong engineering practices: clean code, testing, logging, CI/CD, code reviews.

AI/Agent Engineering

Hands-on experience building LLM-powered applications in Node.js / TypeScript.

Experience designing AI agents or agentic workflows, including:

• tool / function calling
• multi-step orchestration
• routing between steps or models
• human-in-the-loop flows
• structured outputs
• conversation / workflow state handling

Good understanding of:

• context windows and token limits
• model selection trade-offs
• prompt design
• hallucination and safety risks
• latency / quality / cost trade-offs

Experience with at least one JavaScript AI framework or orchestration approach (e.g., LangGraph.js, LangChain.js, AWS Bedrock Agents or custom solutions).

AWS/Bedrock

Production experience with AWS Bedrock.

Experience with:

• model invocation
• tool use / function calling
• prompt orchestration
• evaluation and testing of prompts/models
• retrieval-based patterns

Good knowledge of AWS ecosystem (Lambda, ECS/EKS, S3, CloudWatch, IAM, SQS/SNS, API Gateway).

Understanding of secure and reliable AI system deployment in AWS.



Rerieval/Context Systems

Understanding of RAG patterns and context-building approaches.

Experience with:

• embeddings
• chunking strategies
• retrieval pipelines
• metadata filtering
• relevance and grounding

Experience with vector databases or vector search is a plus.



What We Offer:

• Competitive salary;
• 100% remote opportunity;
• Flexible work environment (in-office, remote, or hybrid depending on preferences and manager approval);
• Opportunities for professional growth and career advancement;
• Collaborative and innovative work environment;
• Paid time off, including holidays, vacation and sick leave;
• Benefits may vary by location and will be confirmed during the interview process.

Job ID: JR-191359

Originally posted on Himalayas