Tillster

Tillster simplifies digital ordering, enhancing customer interaction with restaurants and boosting their sales. Its goal is to turn occasional restaurant patrons into regular customers. Founded in 2002 and headquartered in San Diego, California, Tillster is composed of dozens of Portuguese professionals.
About company

Data Scientist

Remote

location Porto

date February 12, 2026

types Full-time

Data Scientist-Portugal

Remote but must live in Portugal

About Tillster

Headquartered in the USA, Tillster is the global leader in digital ordering and customer engagement solutions. For over a decade we have developed revolutionary self-service, ordering, and payments solutions.

We offer one platform: one scalable, enterprise class solution – to create world-class digital engagement solutions.

Our mission and passion are one in the same: Empower restaurants and consumers to engage and transact anywhere, anytime, and from any device.

Are you a passionate data scientist with a knack for data?

Job Description:

We are seeking an experienced and highly skilled Data Scientist with a strong background in MLOps and Artificial Intelligence (AI).

The ideal candidate will have hands-on expertise in the end-to-end lifecycle of machine learning models – from development to monitoring and optimization.

You will work closely with cross-functional teams, including engineering, data, and product, to integrate AI-powered models into broader software platforms.

A key focus will be on enhancing and maintaining our Recommender System.

Responsibilities:

- Drive the design, development, and deployment of machine learning models, emphasizing the Recommender System.

- Collaborate with data engineers and ML engineers to implement MLOps best practices.

- Oversee the operationalization of models, including real-time predictions and retraining pipelines.

- Monitor model performance post-deployment, implementing metrics and alerts.

- Build and maintain CI/CD pipelines to ensure models are rapidly and reliably updated in production.

- Ensure the model serving infrastructure is optimized for performance.

- Work closely with product managers and stakeholders to define ML model objectives.

- Implement automated testing, validation, and documentation of models.

- Act as a key technical advisor on AI and ML initiatives.

- Use Large Language Models (LLMs), such as Gemini, to enhance platform features.

- Work collaboratively with cross-functional teams.

Required Skills:

- Bachelor’s or Master’s degree in a quantitative discipline such as Data Science, Computer Science, Engineering, or a related field.

- 5+ years of experience as a Data Scientist, with at least 2+ years in MLOps.

- Proven expertise in deploying machine learning models for large-scale production.

- Hands-on experience with MLOps tools such as Airflow.

- Proficiency in Python for deep learning model development.

- Proven experience with Deep Learning and Reinforcement Learning.

- Experience with NoSQL databases (e.g., MongoDB) and JSON.

- Experience working with Recommender Systems.

- Strong knowledge of containerization and orchestration tools such as Docker and Kubernetes.

- Experience working with LLMs, such as Gemini or ChatGPT-4.

- Strong teamwork and collaboration skills.

Nice to have:

- Experience with multi-tenant ML platforms.

- Familiarity with DevOps and cloud infrastructure.

- Experience working with NLP or computer vision models.

Thriving at Tillster

As a member of Tillster, you will embody our core values:

- Put Customers First: Prioritize the needs and satisfaction of our customers.

- Collaborate: Work together effectively, leveraging diverse perspectives.

- Innovate: Embrace creativity and pursue new ideas.

- Operate from Data: Use strong critical thinking skills.

- Drive Results: Focus on achieving tangible outcomes.

- Own It: Take responsibility for your actions.

- Be Passionate and Have Fun: Bring enthusiasm to your work.

The Interview Process

- Recruiter interview with a Talent Acquisition Specialist.

- Final interview with our Data Science Team Leader.

Pay and Benefits (PORTUGAL)

- Compensation competitive to market and geographical location DOE.

- Meal allowance for each day worked available through meal card.

- Up to 20 federal and local/municipal holidays.

- Up to 22 days of vacation every holiday year.

- Tillster pays the premium for employee private health insurance.

Tillster is proudly an Equal Opportunity Employer

No Visa Sponsorship

Principals only – no Agencies or calls please