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Location
In office (Belgrade)
Employment
Full-Time

Confirmed on the employer's own hiring board on Oct 20, 2026. First seen by Alion on Dec 4, 2025. Silver Bell Group scores C on the Alion truth index.

Overview
Company
Impact
Profile match
Silver Bell Group is a business process outsourcing company based in Belgrade, Serbia, that provides multilingual customer support, sales outsourcing, lead generation and live receptionist services around the clock, together with IT staffing, AI consulting and customer experience tooling. It serves clients in sectors such as finance, real estate and moving services with dedicated teams covering more than 25 languages, and it also has staff in Niš and Banja Luka. It recruits customer and technical support specialists and business development representatives for European languages, plus senior backend, frontend, full stack and DevOps engineers and project managers.

AI Engineer / Machine Learning Engineer

Role Overview

We are seeking a highly skilled AI Engineer / Machine Learning Engineer with deep expertise in building, optimizing, and deploying advanced AI systems. The ideal candidate has strong experience with LLM-based architectures, vector databases, distributed AI agents, and end-to-end machine learning lifecycle management.

Key Responsibilities

  • Design, develop, and deploy ML/DL models for production environments.

  • Build and optimize LLM-based systems including RAG pipelines, embeddings, and retrieval workflows.

  • Architect, implement, and maintain vector database solutions (Weaviate, Pinecone, Chroma, Qdrant).

  • Develop backend systems using FastAPI and microservice patterns.

  • Implement distributed AI agent systems and multi-agent orchestration.

  • Integrate ML models into full-stack applications (Python backend, Next.js frontend).

  • Oversee MLOps processes including model training, versioning, deployment, monitoring, and CI/CD integration.

  • Collaborate with product, data, and engineering teams to deliver scalable AI solutions.

Required Skills & Qualifications

  • ML / Deep Learning: Advanced expertise in training and deploying models.

  • LLM, RAG & Embeddings: Advanced proficiency with modern LLM frameworks and retrieval-augmented generation.

  • Vector Databases: Expert-level experience with Weaviate, Pinecone, Chroma, or Qdrant.

  • Backend Architecture: High-level proficiency with FastAPI, microservices, and modern API design.

  • Python & PyTorch: Strong development and deployment experience.

  • Next.js: Practical understanding of client/server communication and integration with AI backends.

  • Distributed AI Agents: Deep understanding of agent-based AI systems.

  • MLOps: Experience with model lifecycle management is a strong advantage.

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