? Aristocrat is looking for a Machine learning Engineer

? Salary: Up to 73k gross/year

? Hybrid in Barcelona (2 days office / 3 days home)

?️ Perks: Gympass gold plan, 25 vacation days + 1 day on your birthday, Flexible payment - daycare, transport, etc., Pension plan 1% base salary, Food at the office twice a week

About Aristocrat ?

Aristocrat is a global entertainment and content creation company powered by technology to deliver world-leading casino and mobile games. They offer a diverse range of products and services including electronic gaming machines, casino management systems, free-to-play mobile games and online real money games. One of their subsidiaries is Product Madness, a leading general mobile game studio, known for creating popular, free-to-play social casino games like

Heart of Vegas , Cashman Casino , and Lightning Link Casino , bringing casino-style fun to mobile devices with a focus on player entertainment and innovation.

Product Madness is a leading global mobile game studio, known for creating popular, free-to-play social casino games like Heart of Vegas , Cashman Casino , and Lightning Link Casino , bringing casino-style fun to mobile devices with a focus on player entertainment and innovation. It is a subsidiary of Aristocrat.

About the Role ?

We seek an ambitious ML/AI Engineer to join our team. You will help improve our AI capabilities and craft the future of our products. This role offers a chance to work on mature machine learning systems and pioneering AI technologies. You will make a real difference in our products and players' experiences.

What You'll Do ?

- Deploy machine learning models that support game features, player experience, and operational efficiency.
- Improve the code quality of others' work by refining SQL and Python scripts for data transformation, feature engineering, modelling pipelines, and AI app, thereby ensuring production readiness.
- Explore and contribute to early-stage projects involving LLMs, RAG systems, and agentic AI to power new types of automation and decision support.
- Develop or refine Streamlit-based tools (or alike) that present ML/AI capabilities to non-technical users via intuitive and interactive interfaces.
- Help build and implement model monitoring systems to ensure long-term performance and business alignment.
- Collaborate with teams across product, data,



and engineering to identify where ML and AI can bring value.
- Communicate results, limitations, and recommendations clearly across technical and business collaborators.

What We're Looking For ?

- 5+ years of experience applying machine learning to real-world problems, from data to deployment.
- Strong Python skills and hands-on experience with ML Python libraries.
- Solid SQL expertise and experience working with large data warehouses.
- Comfort working with cloud platforms (e.g., GCP, AWS, Azure), Docker, and Airflow.
- Ability to build simple user interfaces (e.g., Streamlit) to expose ML models or AI applications to wider teams.
- Hands-on experience building applications with Generative AI (LLMs), including API integration.
- Interest or early experience in RAG systems—whether through prototypes, side projects, or professional work.
- Interest or familiarity with agentic AI concepts or frameworks (e.g., LangChain agents, CrewAI) is a plus, but not a must.
- Curiosity, initiative, and a desire to learn and grow in a fast-evolving space.
- Degree in a relevant technical field or equivalent experience.

Perks ?

- Health insurance - CIGNA
- Gympass gold plan
- 25 vacation days + 1 day on your birthday
- Flexible payment - daycare, transport, etc
- Pension plan 1% base salary
- Food at the office twice a week

So, what’s stopping you?

Their Values ?

- People First

They have the deepest respect for their people and their well being. They know they are exceptionally talented and will always have a choice. They want them to re-choose us every day. They are committed to building a culture where each person's voice will always be heard and addressed.
- MAD for More

Always improving, innovating and never settling for the existing. They push all boundaries with courage and ambition to become the world’s best games company.
- Champion Together





They excel at what they do but yet remain humble and helpful to their teammates. They champion one another and hold each other to high standards without any egos.
- Globally Inclusive

They are all Equal - regardless of the language we speak, where employees live, their gender, religion or culture they come from. They want to build a global home, where everyone has the equal opportunity to make an impact.
- Customer Focused

They always think from the customer's perspective - be it players or internal customers. Improving their experience and joy is what drives them. Every client's success is their big win!

Travel Expectations: None

About JobFluent ?

ES - ¿QUÉ SOMOS?

JobFluent es un híbrido entre una plataforma de empleo tecnológico de calidad y un equipo de asesores que te ayudan a crecer en tu carrera. Nuestro objetivo es que la vida de nuestros usuarios cambie a mejor y que el proceso de cambio (normalmente estresante) sea lo más FLUIDO y agradable posible.

Somos conocidos por:️

Trato humano: nuestro equipo siempre está preparado para ayudarte de forma honesta y personalizada.

Sin spam: primero te escuchamos y sólo después te sugerimos oportunidades relevantes y validadas que encajen con tus intereses e inquietudes.

Acompañamiento: te damos consejos y te apoyamos durante todo el proceso de selección para aumentar tus probabilidades de éxito.

Experiencia del candidato: esto es lo que nos mueve! Nos rebelamos contra la falta de feedback y otras malas prácticas demasiado habituales en nuestro mundo.

EN - WHO WE ARE

JobFluent is a hybrid between a quality tech job platform and a team of advisors who help you grow your career. Our goal is to make our users' lives change for the better and to make the (usually stressful) job search process as FLUENT and enjoyable as possible.

We are known for:️

Human treatment: our team is always ready to help you in an honest and personalized way.

No spam: first we listen to you and only then do we suggest relevant and validated opportunities that match your interests and concerns.

Coaching: we give you advice and support you throughout the selection process to inc rease your chances of success.

Candidate experience: this is what drives us! We rebel against the lack of feedback and other bad practices that are all too common in our world.

📌 Machine Learning Engineer (Barcelona)
🏢 JobFluent
📍 Barcelona