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Machine Learning Engineer

Romania/Poland

Engineering

Own your future:

Our culture isn't something people join, it's something they build and shape. We believe that every person deserves to be heard and empowered. If you're on the fence about whether you're a fit, we say go for it. Let’s build something great together.

We are looking for a Machine Learning Engineer to drive the development of a self-serve AI platform and enhance systems for training, optimizing, and maintaining large language models. The ideal candidate will combine deep technical expertise in model training/fine-tuning and optimization with strong system architecture skills to ensure robust performance, scalability, and regulatory compliance.

Must Haves:

  • Proven experience in training and fine-tuning machine learning models, a huge plus for experience specifically with large language models
  • Familiarity with model performance optimization techniques (quantization, distillation, etc.) and associated tooling.
  • Hands-on experience with AWS SageMaker, Google Vertex AI and/or other services essential for machine learning deployments.
  • Strong experience in training data preparation, storage, versioning, and quality assurance.
  • Expertise in setting up monitoring systems for model evaluation, drift detection, and compliance

Nice to Have:

  • AWS Bedrock Google Vertex AI, Azure ML or similar managed ML platforms
  • Terraform and Infrastructure-as-a-Code experience

Key Responsibilities:

  • Train and fine-tune machine learning models, with a focus on large language models (LLMs).
  • Develop, refine, and implement performance optimization techniques such as quantization, distillation, and cost optimization techniques
  • Build infrastructure and tooling for LLM continuous fine-tuning
  • Create automated pipelines for training data preparation, storage, and version management
  • Develop and maintain company-hosted LLM deployment infrastructure using AWS SageMaker, Google Vertex AI or Azure ML and similar services
  • Work closely with data scientists, DevOps engineers, and stakeholders to define technical requirements and iterate on solution designs
  • Contribute to the development of end-to-end test automation frameworks for functional and performance evaluation

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Machine Learning Engineer

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