AI Engineer

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

We are growing. And we are looking for talented people.

At Decskill, we believe that technological excellence is driven by human talent.

We are an IT consulting company with more than 10 years of consolidated experience in the market, focused on building long-term relationships with both our clients and our people. Today, we are a community of over 800 professionals, working from Lisbon, Porto, and Madrid, contributing to impactful technology initiatives.

As part of the Astek Group, we combine a strong local culture with a global presence, being active in around 23 countries across 4 continents. This allows us to offer an international context, diverse challenges, and long-term career opportunities, while staying close to our teams.

AI Engineer | GenAI

Mission

As part of an Intelligent Automation and AI team, you will be responsible for designing, developing and continuously improving production-grade AI agents supporting business operations. You will work on agent reasoning flows, tool integration, prompts, evaluation and observability, while adapting general-purpose AI solutions to specific business requirements.

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 appropriate guardrails and human-in-the-loop checkpoints for controlled business processes.
• Engineer, test and version prompts, ensuring 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, including accuracy, groundedness and escalation rates.
• Perform shadow testing and validation before production rollout.
• Adapt general-purpose AI agents to specific business requirements, including terminology, formats, workflows and controls.
• Instrument AI agents for observability, including structured logging, token usage, latency and failure analysis.
• Contribute to model lifecycle management, including model and provider changes and context window considerations.
• Analyse cost and latency trade-offs when selecting and implementing AI solutions.
• Collaborate closely with Business Analysts and technical teams to translate business processes and operational knowledge into AI agent behaviour.
• Ensure the reliability, scalability and quality of AI solutions in production environments.
• Work collaboratively within a multicultural and international team.

Requirements

• 3–6 years of experience in Python development.
• At least 1–2 years of experience working with LLM/Generative AI applications.
• Practical experience with at least one AI agent framework, such as:
• CrewAI
• LangGraph
• LangChain
• AutoGen
• Similar frameworks
• Understanding of ReAct-style agent loops, tool calling and structured outputs.
• Strong knowledge of prompt engineering.
• Experience with RAG patterns and LLM evaluation techniques.
• Experience consuming REST and/or gRPC APIs.
• Knowledge of JSON Schema design.
• Experience with asynchronous Python.
• Working knowledge of Docker and Kubernetes.
• Ability to deploy applications, read logs and safely manage Kubernetes ConfigMaps.
• Strong testing culture and experience with pytest.
• Experience mocking LLM calls and designing deterministic tests for non-deterministic AI systems.
• Strong analytical and problem-solving skills.
• Ability to translate business requirements into reliable technical solutions.
• Strong collaboration and communication skills.

Are you looking for an environment that values curiosity and commitment? Here, your contribution has real impact and individual growth is taken seriously.

Find with us the right opportunity to grow!

What you can expect from us

• Long-term projects with national and international context.
• Opportunities to grow technically and professionally.
• A people-first culture, focused on transparency and trust.
• Teams that value ownership, collaboration and stability.
• The opportunity to work with cutting-edge Generative AI and Agentic AI technologies.
• Exposure to real-world AI use cases and production environments.
• A collaborative and multicultural working environment.
• The opportunity to contribute to the evolution of AI solutions from development to production.

Your next challenge might start here.

Decskill is committed to equality and non-discrimination with all our talents. We recruit and promote talent, based on diversity and inclusion, regardless of age, gender, ethnicity, race, nationality or any other form of discrimination incompatible with the dignity of the human being.