About the client

Our client is an international technology leader in the online entertainment industry, operating across nearly twenty markets worldwide. With a global team of over 2,700 professionals from more than 40 nationalities, the company is recognized for its strong focus on innovation, data-driven decision-making, and the use of cutting-edge AI technologies to deliver exceptional digital experiences.

About the role

We are seeking a Senior Machine Learning Engineer to join the Data & AI division based in Portugal. This role is part of a multidisciplinary AI team responsible for designing and deploying advanced machine learning systems that enhance product performance and business outcomes. You will collaborate closely with data scientists, data engineers, and product teams to build scalable, production-grade ML pipelines and infrastructure.

Role Highlights:

Position : Senior Machine Learning Engineer
Type of work : Hybrid from Lisbon, remote from Portugal
Work from office requirements : 1 day per week from the office, 4 days per week from the office. A remote option could be possible if located outside Lisbon.
Type of contract : Full-time employment contract.
Contract location : Portugal
Type of company : International growing tech company with operations in 15+ markets with around 2500 employees across several continents.
Years of experience required : 5+ years of experience.
Must-have tech skills : Python, Microsoft Azure or AWS, Spark and PySpark, MLflow/Kuberneteflow, ML algorithms and models.
Industry : Information technology, entertainment
Relocation support : No relocation support.
Bonuses, perks, benefits : Competitive pay and bonus, career development, meal package, private health insurance for the employee and their family members, continuous training, and unlimited access to training.
Reasons why it is a great place to work? International company, growing team, exciting project, the company is among the Best Workplaces in Europe and is certified Great Place to Work.
Work permit requirements : Only candidates with a valid work permit for the European Union (EU) will be evaluated for this role.

Tech stack

Python
Spark / PySpark
MLflow / Kubeflow
Azure / AWS (cloud environment)
CI/CD/CT pipelines
Distributed systems and MLOps frameworks

What will you do

Collaborate with Data Scientists to design and deliver automated training pipelines for machine learning models.
Develop scalable solutions for both model training and inference within distributed computing environments.
Implement model evaluation, monitoring, and diagnostic tools to ensure performance and reliability.
Automate deployment processes and expose models through REST API endpoints for real-time consumption.
Build and maintain robust ML serving systems optimized for scalability and efficiency.
Contribute to the optimization of data clusters and compute resources.
Develop internal libraries, tools, and CI/CD pipelines that streamline ML workflows.

Ideally you bring

Proven experience as a Machine Learning or Software Engineer in large-scale, production-grade environments.
Strong expertise in Python development for data-intensive systems.
Hands-on experience designing ML software systems and implementing end-to-end pipelines.
Proficiency with cloud technologies such as Microsoft Azure or AWS .
Deep understanding of the machine learning project lifecycle and MLOps concepts (MLflow, Kubeflow, or similar).
Strong background in distributed data processing using Spark / PySpark .
Excellent analytical, problem-solving, and communication skills.

Why this opportunity stands out

This position offers the chance to work within a world-class AI environment where innovation, scalability, and performance are at the core of every project. You will participate in the design of next-generation ML systems, contribute to impactful AI solutions used globally, and grow alongside a team of highly skilled professionals. The company promotes autonomy, continuous learning, and technical excellence, making it an ideal environment for senior engineers aiming to take their MLOps expertise to the next level.

Sounds like you or would like to get more information?

APPLY NOW by filling in the form below or by sending us your CV directly with a subject "Senior Machine Learning Engineer – Portugal" at Ver o e-mail no https://jobeax.com/link/8om4ubga9gvjbUNE

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Disclaimer: We are an equal opportunity employer dedicated to cultivating a diverse and inclusive work environment. We invite and encourage applications from individuals of all backgrounds, irrespective of race, gender, gender identity, religion, marital status, sexual orientation, health conditions, age, or any other personal characteristics.

Senior Machine Learning Engineer - Portugal

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