Backend AI Engineer

# Think Data Be Smart #

About Us: DataSmart is a Portuguese company, positioning itself as a consulting company of excellence, with over 20 years of existence. We are specialized in Technologies and Information Systems services, for the Portuguese and International markets. We pride ourselves on fostering a culture of involvement, experience, and excellence.

Join our team as a Backend AI Engineer (Hybrid – Porto)!

What You’ll Do:

• Design, develop, and maintain backend services using C# and .NET/.NET Core
• Translate business requirements into scalable software and AI/ML solutions
• Prepare datasets, engineer features, and select appropriate machine learning approaches
• Build, train, fine-tune, evaluate, and deploy different types of ML models, including classification, regression, NLP, time-series, anomaly detection, computer vision, and deep learning
• Develop production-ready ML pipelines using Python, PyTorch, TensorFlow, and scikit-learn
• Deploy ML models through cloud endpoints, APIs, batch pipelines, and edge applications
• Monitor model performance, data quality, and application behavior in production
• Implement model versioning, experiment tracking, and retraining processes
• Develop LLM-based solutions using GPT, Transformers, Hugging Face, RAG, and prompt engineering
• Create proofs of concept and support the transition of AI solutions into production
• Design cloud-based AI architectures using Azure, AWS, or Google Cloud
• Work with Azure Machine Learning, Azure AI, AWS SageMaker, AWS Bedrock, Vertex AI, or equivalent services
• Containerize applications and ML services using Docker and Kubernetes
• Contribute to CI/CD pipelines, MLOps practices, and AI governance standards
• Ensure security, privacy, and responsible AI principles are applied throughout development
• Conduct code reviews, document technical decisions, and mentor other engineers
• Collaborate with Product Owners and cross-functional teams to deliver AI-driven solutions
• Support production incidents, maintain SLAs, and identify technical improvements.

Qualifications:

• Bachelor’s or Master’s degree in Computer Science, Engineering, Data Science, or a related field
• 5+ years of professional software engineering experience
• 5+ years of hands-on experience with C# and .NET/.NET Core
• 3+ years of hands-on experience in Machine Learning, AI Engineering, or Data Science
• Proven experience building, training, and deploying at least 2 different types of Machine Learning models beyond LLM and RAG applications
• Strong Python skills for data processing, model development, and ML pipelines
• Practical experience with PyTorch, TensorFlow, and/or scikit-learn
• Experience with model evaluation, experiment tracking, versioning, and production monitoring
• Experience deploying ML models using Azure, AWS, or Google Cloud
• Knowledge of Azure ML, Azure AI, AWS SageMaker, AWS Bedrock, Vertex AI, or similar services
• Experience with Docker, Kubernetes, and CI/CD pipelines
• Strong understanding of MLOps practices and production model operations
• Knowledge of NLP, LLMs, Transformers, Hugging Face, and prompt engineering
• Experience with microservices, databases, and high-volume backend systems
• Good understanding of API security, AI governance, and data privacy
• Experience working in Agile/Scrum environments
• Fluent English.

At DataSmart, you will have the opportunity to integrate into a solid company and participate in projects of high recognition, nationally and internationally, with an appealing technological environment and career progression.

Excellence in the way to the future!

Connect with Us: Follow us on LinkedIn for updates on career opportunities, company news, and industry insights! For further details, visit us at www.datasmart.pt

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