Senior AI Platform Backend Engineer (LLM): Designing and implementing cloud infrastructure and backend architecture for AI Verification and Az ChatGPT Services with an accent on MLOps, LLM-as-a-judge production services, and high-load RAG solutions. Focus on optimizing model latency, prompt engineering, and evaluating agent-based solutions for AI-generated content validation.
Location:

Hybrid in Barcelona, Spain

with remote-work options.
Company

NEORIS, now part of EPAM, is a Digital Accelerator with over 20 years of experience, fostering a multicultural and startup-driven culture to create high-impact solutions for clients globally.
What you will do

Design, implement, and manage cloud infrastructure on AWS using Infrastructure as Code (IaC) tools like Terraform.
Maintain and improve CI/CD pipelines using tools such as GitHub Actions, AWS CodePipeline, Jenkins, or ArgoCD.
Develop backend architecture for AI Verification and Az ChatGPT Services using Python and FastAPI.
Develop and maintain LLM-as-a-judge production services for validating AI-generated content,



optimizing model latency.
Design, build, and maintain high-load RAG solutions including ingestion and retrieval services.
Perform prompt engineering using techniques like Chain-of-Thought across multiple LLMs.
Requirements

5+ years of experience designing and implementing cloud solutions in AWS (Azure is a plus) .
Proven background in building solutions involving IaaS, PaaS, Serverless, and distributed architectures.
Advanced knowledge of Kubernetes, microservices, and IaC (Terraform).
Hands-on experience with Machine Learning pipelines, MLOps, and LLM-based solutions (Chatbots, RAG).
Strong experience developing in Python, including FastAPI.
Experience with observability tools (Prometheus, Grafana, ELK, OpenTelemetry) and CI/CD/DevOps practices.
High level of English (C1 or equivalent) .
Nice to have

Experience with Cloud Security and compliance.
Familiarity with cloud cost-optimization tools and automa

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