AI Engineer

Hexa Group; Portugal; Híbrido; EUR 50 000 - 75 000; Tempo integral

Vantagens oferecidas por esta oferta de emprego

Private health insurance

Mental health support

Training opportunities

Hybrid work model

Childcare vouchers

Team events

Upskilling in AI governance

Resumo da oferta

Hexa Group is seeking a Mid AI Engineer to lead the design and development of ML, Generative AI and agentic solutions in a telecommunications sector, in a hybrid work model. You will own end-to-end lifecycle from problem framing to deployment and monitoring.

You will design RAG pipelines, embeddings, and LLM-based solutions, mentor junior data scientists and collaborate with cross-functional teams to ensure robust delivery.

Qualificações

• Master's degree in Data Science, Statistics, CS or related field.
• Minimum 3 years of experience in ML, Generative AI or AI engineering.
• Strong knowledge of modeling, LLMs, embeddings and monitoring.

Responsabilidades

• Lead design of ML, Generative AI, RAG and AI agent use cases with business impact.
• Translate complex business needs into analytical and AI-based solutions.
• Define technical approaches with ML, LLMs, prompt engineering and embeddings.
• Contribute across lifecycle from problem framing to deployment and monitoring.
• Define evaluation frameworks for models, outputs and performance.
• Support optimization, robustness and scalability of AI solutions.
• Mentor junior Data Scientists and share knowledge within the team.
• Collaborate with cross-functional teams for aligned delivery.

Conhecimentos

Machine Learning

Generative AI

LLMs

RAG pipelines

Embeddings

Prompt engineering

Model evaluation

AI monitoring

Python

Spark

Java

LangChain

LangGraph

Formação académica

Master's degree in Data Science, Statistics, Computer Science or related field

Ferramentas

Python

Spark

Java

LangChain

LangGraph

Descrição da oferta de emprego

We are looking for a Mid AI Engineer to lead the design and development of Machine Learning, Generative AI and agentic solutions in the telecommunications sector, in a hybrid work model. This role covers the end-to-end lifecycle, from business problem analysis to deployment, monitoring and continuous improvement.

WHAT YOU WILL DO

• - Lead the design of Machine Learning, Generative AI, RAG and AI agent use cases with business impact.
• - Translate complex business needs into analytical and AI-based solutions.
• - Define technical approaches involving Machine Learning, LLMs, prompt engineering, embeddings and agentic frameworks.
• - Contribute across the full solution lifecycle, from problem framing and experimentation to deployment and monitoring.
• - Define evaluation frameworks for models, outputs, performance and solution reliability.
• - Support the optimization, robustness and scalability of AI solutions.
• - Mentor junior Data Scientists and contribute to technical knowledge sharing within the team.
• - Collaborate with cross-functional teams to ensure technical alignment and effective delivery.

WHAT WE ARE LOOKING FOR

• - Academic background at Master's level in Data Science, Statistics, Computer Science or a related field.
• - At least 3 years of experience in Machine Learning, Generative AI or related AI engineering contexts.
• - Strong knowledge of modeling, optimization and LLM-based solutions.
• - Experience designing and evaluating RAG, embeddings and AI monitoring approaches.
• - Ability to lead technical discussions, guide junior profiles and communicate clearly with technical and business stakeholders.
• - Strong analytical mindset, ownership and focus on quality, robustness and scalable delivery.

TECHNICAL SKILLS

• - Machine Learning
• - Generative AI
• - Large Language Models
• - RAG pipelines
• - Embeddings
• - Prompt engineering
• - Model evaluation
• - AI monitoring
• - Python
• - Spark
• - Java
• - LangChain
• - LangGraph or similar agentic frameworks

WHAT WE OFFER

• - Private health insurance from day one, with no waiting periods and optional family extension.
• - Confidential mental health support through TEAM 24, including access to psychological support, content and live sessions.
• - Continuous training and certification opportunities to support structured development and long-term capability building.
• - A hybrid work model, with flexibility whenever the role and delivery context allow it.
• - Childcare vouchers and practical measures that support balance between personal and professional life.
• - Team moments, shared milestones and leadership presence when it matters most.
• - Upskilling opportunities in quality management, information security, AI governance and cybersecurity best practices.

EQUAL OPPORTUNITY

Hexa is committed to equal opportunity and inclusive recruitment. We value diverse backgrounds, perspectives and experiences, in line with the principles of the Portuguese Diversity Charter.

HEXA LIFE

At Hexa, we are all Builders. You will join a collaborative environment built on honesty, mutual support and agility, where people contribute, learn and grow together while helping to create reliable solutions with real impact.