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September 15, 2026

Senior MLOps / ML Platform Engineer

Senior • Remote

Warsaw, Poland

Quick Facts

  • Senior MLOps Engineer
  • Build a production-grade ML platform for a large-scale AdTech ecosystem

Description

We are looking for a Senior MLOps Engineer to help build a production-grade ML platform for a large-scale AdTech ecosystem, supporting infrastructure powering predictive decision-making systems processing hundreds of millions of auction requests daily. The role focuses on scalable ML orchestration, model lifecycle automation, observability, and real-time optimization workflows in a dedicated engineering team.

Responsibilities

  • Build and maintain ML training orchestration pipelines across hourly, daily, and weekly schedules
  • Implement retries, backfills, and idempotent execution mechanisms
  • Design and support model registry workflows including versioning, lineage, evaluation gates, and promotion processes
  • Develop isolated per-advertiser model environments with namespace and configuration separation
  • Build scalable refresh pipelines and publishing workflows for serving infrastructure
  • Implement shadow mode and champion/challenger deployment strategies
  • Develop monitoring and alerting for ML-specific metrics including feature drift, prediction drift, train/serve skew, and calibration decay
  • Ensure reproducibility of ML workflows using containerized environments, pinned dependencies, and data snapshots
  • Monitor training and scoring costs across tenants
  • Collaborate with DevOps and SRE engineers on CI/CD and infrastructure automation
  • Prepare operational documentation and platform handover materials

Requirements

  • 5+ years of experience in MLOps, ML platform engineering, or infrastructure engineering supporting production ML systems
  • Strong Python skills and experience building platform-level tooling and automation
  • Hands-on experience with Kubernetes and Docker
  • Experience building CI/CD pipelines for ML workloads
  • Hands-on production experience with MLflow, Kubeflow, Airflow, Argo Workflows, Vertex Pipelines, or similar orchestration and ML lifecycle platforms
  • Experience with ML platforms and model lifecycle tools such as Vertex AI, MLflow, or Kubeflow
  • Strong understanding of ML observability including drift detection, train/serve skew monitoring, and incident response
  • Experience designing or supporting multi-tenant ML systems and isolated model environments
  • Experience working with cloud platforms, preferably GCP
  • Experience with infrastructure-as-code tools such as Terraform
  • Experience with Linux environments
  • Understanding of the ML lifecycle and productionization processes
  • Upper-Intermediate English level or higher

Benefits

  • Work on cutting-edge ML infrastructure projects
  • Collaborate with experienced engineers and influence architecture decisions in a long-term strategic engagement

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