GenAI AI Agent Engineer | Production-Ready

Decskill; Lisboa; On-site; EUR 55,000 - 75,000; Full time

Job summary

Decskill, part of the Astek Group, is growing its Intelligent Automation and AI team in Portugal. We seek an AI Engineer to design, build, and improve production-grade AI agents supporting business operations.

You will work on agent reasoning flows, tool integration, prompts, evaluation and observability to tailor general-purpose AI solutions to business needs. You will develop and maintain AI agents with Python, LangGraph, LangChain and internal frameworks, implement guardrails, and build

Qualifications

• 3–6 years of experience in Python development.
• 1–2 years of experience with LLM/Generative AI applications.
• Experience with at least one AI agent framework (e.g., CrewAI, LangGraph, LangChain, AutoGen).
• Understanding of ReAct-style agent loops and tool calling.
• Experience consuming REST and/or gRPC APIs.
• Knowledge of JSON Schema design and asynchronous Python.
• Experience with Docker and Kubernetes.

Responsibilities

• Develop and maintain AI agents using Python, LangGraph, LangChain and internal AI frameworks.
• Design agent workflows, including task decomposition, tool and function calling, memory and state management.
• Implement guardrails and human-in-the-loop checkpoints for controlled processes.
• Engineer, test and version prompts with proper configuration and release management.
• Build and maintain AI evaluation frameworks using real business cases and golden datasets.
• Develop regression test suites and quality metrics (accuracy, groundedness, escalation rates).
• Perform shadow testing and validation before production rollout.
• Collaborate with Business Analysts and technical teams to translate business requirements into AI agent behaviour.

Skills

Python development

LLM/Generative AI

Prompt engineering

Asynchronous Python

Tools

CrewAI

LangGraph

LangChain

AutoGen

Other frameworks

Job description

Decskill, part of the Astek Group, is growing its Intelligent Automation and AI team in Portugal. We seek an AI Engineer to design, build, and improve production-grade AI agents supporting business operations.

You will work on agent reasoning flows, tool integration, prompts, evaluation and observability to tailor general-purpose AI solutions to business needs. You will develop and maintain AI agents with Python, LangGraph, LangChain and internal frameworks, implement guardrails, and build