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N-iX

Senior Python Back-End Engineer with Gen AI experience

N-iX, Poland, New York, United States

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Overview

We’re looking for a

backend-focused software engineer

with a strong interest in applied AI to help us integrate

LLMs, RAG pipelines, and agentic workflows

into our SaaS products. This role is not about building models from scratch - it’s about

engineering production-grade systems that harness existing AI models and frameworks

to deliver real product value. You’ll collaborate with product managers, LLM specialists, and domain experts to design, build, and scale intelligent features powered by modern AI technologies.

Responsibilities

Design and implement backend services that integrate LLM APIs (e.g., OpenAI, Claude) and retrieval-augmented generation (RAG) architectures

Build and maintain prompt orchestration logic, agent frameworks, and tool integrations

Work with vector databases (e.g., Pinecone, Weaviate, pgvector) to enable semantic search and retrieval

Collaborate with product and validation teams to ensure outputs are reliable, safe, and aligned with domain expectations

Implement monitoring, observability, and fallbacks for AI-driven services in production

Contribute to internal SDKs, templates, and documentation for reusability across product teams

Requirements

3 - 5+ years of experience as a backend or platform engineer

Strong skills in Python, TypeScript/Node.js, or similar backend stack

Hands-on experience with AI/LLM APIs, RAG frameworks (LangChain, LlamaIndex), or vector stores

Understanding of prompt engineering, agent design, or AI system patterns

Comfort working with non-deterministic systems and building safeguards around them

Strong software engineering fundamentals: clean architecture, testing, CI/CD, logging

Nice to Have

Experience with agentic AI tools (LangGraph, CrewAI, etc.)

Familiarity with LLM evaluation techniques or AI observability platforms

Exposure to regulated environments (e.g., clinical, financial, legal tech)

We offer

Flexible working format - remote, office-based or flexible

A competitive salary and good compensation package

Personalized career growth

Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more)

Active tech communities with regular knowledge sharing

Education reimbursement

Memorable anniversary presents

Corporate events and team buildings

Other location-specific benefits

Not applicable for freelancers

Seniority level

Mid-Senior level

Employment type

Full-time

Job function

Industries: Construction, Software Development, and IT Services and IT Consulting

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