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Senior Machine Learning Engineer – Python, LLMs, NLP
HumanIT Digital ConsultingSenior Machine Learning Engineer focusing on NLP and LLMs for a fast-growing AI tech startup in Porto. Designing, training, and deploying machine learning models in a dynamic product-focused environment.
Tech Stack
Tools & technologiesAWSAzureCloudGoogle Cloud PlatformPythonPyTorchTensorflow
About the role
Key responsibilities & impact- Designing and implementing NLP and LLM-based solutions
- Training and deploying Machine Learning models for intelligent document processing, classification, matching, and search
- Building scalable ML pipelines and evaluation frameworks
- Experimenting with modern AI tooling and state-of-the-art models
- Improving AI product reliability, performance, and safety
- Helping define AI engineering standards, tooling, and best practices
- Working in a fast iteration environment with strong product ownership.
Requirements
What you’ll need- 5+ years of experience in Machine Learning Engineering, Data Science, or AI-focused Software Engineering roles
- Strong experience with Python 3.x
- Hands-on experience with NLP and Large Language Models (LLMs)
- Experience with frameworks such as PyTorch 2.x, TensorFlow 2.x, Hugging Face Transformers, LangChain, or similar
- Strong understanding of model training, evaluation, fine-tuning, and deployment
- Experience building scalable ML pipelines and production-ready AI systems
- Experience working with vector databases, semantic search, embeddings, or retrieval systems
- Knowledge of cloud platforms such as AWS, GCP, or Azure
- Understanding of software engineering best practices, testing, CI/CD, and scalable architectures
- Experience working in startup or fast-paced product environments
- Strong communication and collaboration skills
- Fluent English (mandatory).
Benefits
Comp & perks- Flexible Office Model
- Professional development opportunities
ATS Keywords
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Hard Skills & Tools
Machine Learning EngineeringData ScienceAI-focused Software EngineeringPython 3.xNatural Language Processing (NLP)Large Language Models (LLMs)PyTorch 2.xTensorFlow 2.xHugging Face TransformersML pipelines
Soft Skills
communicationcollaborationproduct ownershipfast iterationproblem-solving