Senior AI Engineer - LLMs, Agents & Production Systems

ITSector; Castelo Branco; Hybrid; EUR 65,000 - 110,000; Full time

Benefits offered by this job

Health Insurance

Hybrid work model

Training & Certification

Team Building & Happy Hours

Job summary

ITSector is seeking an experienced AI Software Engineer to design, develop, and deploy AI-powered applications, including intelligent agents and knowledge pipelines. You will build integrations with enterprise systems via APIs and tools while ensuring security, scalability, and production readiness.

The role requires 5+ years in software engineering with 3+ years in production AI, plus hands-on experience with leading LLMs, prompt design, and AI pipelines.

Qualifications

• Degree in Computer Engineering, Artificial Intelligence or similar.
• Minimum 5 years of professional software engineering experience, including 3+ years designing and implementing AI-based solutions in production environments.
• Hands-on experience with state-of-the-art LLMs such as GPT, Gemini, Claude, Llama, Mistral, or equivalent models.
• Ability to design effective prompting and context-engineering strategies, structured outputs, and evaluation approaches to optimize LLM performance for production use.
• Experience building AI agent applications using LangChain, LangGraph, Google ADK, Microsoft Agent Framework, or comparable technologies.
• Understanding of agent workflows, multi-step reasoning, memory management, tool calling, and state orchestration.
• Strong Python development skills; experience with .NET is mandatory.
• Knowledge of asynchronous programming, API development, relational and NoSQL databases, and scalable service-oriented architectures.
• Experience designing AI pipelines for document ingestion, indexing, retrieval, and response generation.
• Understanding of AI quality evaluation, latency optimization, and cost monitoring.
• Experience with Azure, Google Cloud Platform, or equivalent cloud environments.
• Knowledge of Docker, Kubernetes, Terraform, and CI/CD practices.
• Familiarity with cloud security, IAM, deployment automation; GDPR compliance.

Responsibilities

• Design, develop, and maintain AI-powered applications and intelligent agents.
• Build integrations between AI models and enterprise systems through APIs and custom tools.
• Develop scalable pipelines for knowledge retrieval and information processing.
• Ensure AI solutions are secure, reliable, scalable, and production ready.
• Promote engineering best practices across LLMOps, MLOps, observability, testing, and continuous delivery.
• Evaluate emerging AI technologies and contribute to the evolution of the organization''s AI capabilities.

Skills

LLM development

Python development

Prompt engineering

LangChain

LangGraph

CI/CD

Docker

Kubernetes

Azure / cloud platforms

English & Portuguese

Education

Bachelor's degree in Computer Engineering, AI or similar

Tools

LangChain

LangGraph

Google ADK

Microsoft Agent Framework

Job description

ITSector is seeking an experienced AI Software Engineer to design, develop, and deploy AI-powered applications, including intelligent agents and knowledge pipelines. You will build integrations with enterprise systems via APIs and tools while ensuring security, scalability, and production readiness.

The role requires 5+ years in software engineering with 3+ years in production AI, plus hands-on experience with leading LLMs, prompt design, and AI pipelines.