Backend AI Engineer (.NET/C#)

act digital; Porto; Hybrid; EUR 45,000 - 75,000; Full time

Job summary

act digital seeks a Backend AI Engineer to build and integrate AI capabilities into backend products and services in Porto. You will design and develop backend services using C# and .NET, and deploy ML models into production.

You will work cross-functionally with engineering, data and product teams, apply MLOps, and implement LLM/RAG features across scalable applications in a hybrid Porto setting (three days on site).

Qualifications

• Strong C# and .NET backend development experience.
• Experience building or deploying machine learning models.
• Knowledge of LLMs, RAG, cloud platforms and MLOps.
• Experience with Docker and Kubernetes.

Responsibilities

• Design and develop backend services using C# and .NET.
• Build, train and deploy machine learning models into production.
• Integrate LLM and RAG capabilities into scalable applications.
• Collaborate across engineering, data and product teams.
• Apply MLOps practices to testing, deployment and monitoring.

Skills

C#

.NET

Python

LLMs

MLOps

Tools

Docker

Kubernetes

PyTorch

TensorFlow

scikit-learn

Job description

We are seeking a Backend AI Engineer to build and integrate AI capabilities into backend products and services.

Responsibilities

• Design and develop backend services using C# and .NET.
• Build, train and deploy machine learning models into production.
• Integrate LLM and RAG capabilities into scalable applications.
• Collaborate across engineering, data and product teams.
• Apply MLOps practices to testing, deployment and monitoring.

Requirements

• Strong C# and .NET backend development experience.
• Experience building or deploying machine learning models.
• Python and frameworks such as PyTorch, TensorFlow or scikit-learn.
• Knowledge of LLMs, RAG, cloud platforms and MLOps.
• Experience with Docker and Kubernetes.

Full-time, hybrid in Porto, Portugal, with three days per week on site.