Principal AI Engineer — Remote/Hybrid for Multi-Agent AI Systems

Sigma Software; Warszawa; Hybrid; PLN 180,000 - 320,000; Full time

Job summary

Sigma Software is seeking a Senior/Principal AI Engineer to join our Stellar AdTech Business Unit. This full-time role features a flexible hybrid/remote work option and a focus on production-grade agentic AI systems powering global AdTech clients.

You will architect multi-agent frameworks, design custom AI models, contribute to presales activities, and shape solution architectures for enterprise-scale deployments, with emphasis on observability and security.

Qualifications

• Designing and building AI-powered systems in production.
• Agentic frameworks, multi-agent collaboration, orchestrator/worker models.
• RAG pipelines, relevance tuning.
• Python and/or TypeScript, API design, microservices, cloud-native architectures.
• Presales consulting, translating business problems into AI solutions.

Responsibilities

• Consult clients during presales to assess AI readiness and translate visions into actionable requirements.
• Prepare presales deliverables including architecture diagrams, assumptions, risks, estimates and roadmaps.
• Define AI use cases and agentic scenarios based on client needs.
• Select and justify LLMs per use case based on requirements, cost, latency, safety, capability.

Skills

AI systems in production

Agentic frameworks

RAG pipelines

Python/TypeScript

Presales consulting

Tools

AWS Bedrock

Azure OpenAI

GCP Vertex AI

Job description

Sigma Software is seeking a Senior/Principal AI Engineer to join our Stellar AdTech Business Unit. This full-time role features a flexible hybrid/remote work option and a focus on production-grade agentic AI systems powering global AdTech clients.

You will architect multi-agent frameworks, design custom AI models, contribute to presales activities, and shape solution architectures for enterprise-scale deployments, with emphasis on observability and security.