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AI Engineer

  • Seniority: Mid
  • Format: Hybrid
  • Place: Lisbon, Portugal

Role Description

As an AI Engineer, you will design, develop, and deploy Artificial Intelligence and Machine Learning solutions that solve real business problems. You will work on the full lifecycle of AI/ML solutions – from data exploration and model development to deployment, monitoring, and continuous improvement. 

You will collaborate closely with cross-functional teams, including data scientists, software engineers, and business stakeholders, to translate requirements into scalable, production-ready AI systems, applying best practices in MLOps and responsible AI.

Key Responsabilities

  • Design, develop, train, and validate machine learning and deep learning models to solve business problems. 
  • Build and maintain data pipelines for training, testing, and inference. 
  • Deploy AI/ML models into production environments, ensuring scalability, reliability, and performance. 
  • Collaborate with data scientists, software engineers, and business stakeholders to define requirements and translate them into technical solutions. 
  • Implement MLOps practices, including model versioning, CI/CD for ML, monitoring, and retraining pipelines. 
  • Evaluate and fine-tune pre-trained models (including LLMs) for specific use cases. 
  • Monitor model performance in production and implement improvements based on feedback and new data. 
  • Ensure AI solutions comply with data privacy, security, and ethical AI guidelines. 
  • Document technical solutions, architecture decisions, and processes. 
  • Stay up to date with the latest developments in AI/ML research and tools, proposing their adoption when relevant. 

Job Qualifications

  • Bachelor’s or Master’s degree in Computer Science, Data Science, Artificial Intelligence, Engineering, or a related field. 
  • 4+ years of experience in AI/ML engineering or a related role. 
  • Solid understanding of machine learning, deep learning, and statistical modeling concepts. 
  • Proven experience taking models from prototype to production. 
  • Strong problem-solving skills and ability to work with ambiguous, real-world data. 
  • Good communication skills, with the ability to explain technical concepts to non-technical stakeholders. 
  • Fluency in English (written and spoken); [additional language] is a plus. 
  • Ability to work independently and as part of a distributed/remote team. 

Main Tech Skills

  • Programming Languages: Python (required); familiarity with R, Java, or Scala is a plus. 
  • ML/DL Frameworks: TensorFlow, PyTorch, Keras, scikit-learn. 
  • LLM & NLP: Hugging Face Transformers, LangChain, OpenAI/Anthropic APIs, prompt engineering, RAG architectures. 
  • MLOps Tools: MLflow, Kubeflow, DVC, Airflow. 
  • Cloud Platforms: AWS (SageMaker), Azure (Azure ML), or GCP (Vertex AI). 
  • Data Engineering: SQL, Spark, Pandas, NumPy. 
  • Containerization & Orchestration: Docker, Kubernetes. 
  • Vector Databases: Pinecone, Weaviate, FAISS, Chroma. 
  • Version Control & CI/CD: Git, GitHub Actions / GitLab CI / Jenkins. 
  • APIs & Microservices: REST/GraphQL API development, FastAPI, Flask. 

Perks & benefits

Health Insurance

We’ve got your health and smile covered! Our comprehensive plan includes medical and dental care. Because taking care of you means you can focus on what matters most.

Birthday Off

Who likes to work on their birthday, right? Celebrate your day exactly how you want to. Sleep in, go out, or do absolutely nothing – it’s your call.

Extra Days Off

Ramp up your vacations with up to 4 extra off-days per year. Whether you need a long weekend or a proper getaway, we believe rest fuels your best work. Time off isn’t a perk – it’s essential.

Blue Wildlife Pledge

We’ll sponsor an animal of your choice at the Lisbon Zoo for the duration of your stay with us! It’s our way of giving back to nature while giving you something meaningful to connect with. Visit your animal anytime you like.

Regular Training

We want to invest in your skills and help you grow. From certifications to workshops, we support your learning journey. Your development is our priority, not an afterthought.

Great Work-Life Balance

Work for the goals, not for the clock. We trust you to manage your time and deliver results. Flexibility isn’t just a buzzword here – it’s how we operate.

Excellent Work Environment

No back-stabbers, no bad apples, and no suits! We’ve built a culture of respect, collaboration, and honesty. Come as you are and work with people who have your back.

Team-Building Events

Get ready for some cool events, parties, and hangouts. We bond over more than just deadlines and deliverables. Great teams are built on great memories together.

Free Coffee & Tea

To keep creativity and productivity flowing… All-Day, No-Limit of freshly brewed coffee & tea refills at the office.

Be Bold · Work Smart · Change Tomorrow

We started this company with a simple observation: most organizations don’t struggle because they lack technology — they struggle because solutions are too complex, disconnected from reality, or hard to sustain over time. Data and AI can create enormous value. But only when they are designed with clear intent, solid foundations, and a realistic understanding of how organizations actually operate. We’re a young, fast-growing company with plenty of opportunities to learn, evolve, and build something meaningful together.