Senior Machine Learning Engineer

About the Position

Join a company that empowers you to do your very best work. Take this challenge and make an impact in your career!

If you're passionate about technology and ready for a challenge, join our team of talented individuals and show your technical skills, creativity, and drive for impact.

You'll work with the best in the industry in a supportive, happy, and human-centric environment, making seamless technology. That’s why we were recognized as Best Workplace® in Europe (medium companies), Best Quality of Life Company® and the 2nd Best Great Place to Work® in Portugal by Great Place to Work®. See for yourself by checking our Glassdoor reviews.

What exciting projects will you have to make an impact and work on?

At Imaginary Cloud, our work improves and simplifies people's lives by creating easy and intuitive digital products. Our day-to-day tasks include development, problem-solving, management, and human interaction.

Together, we will drive innovation by creating innovative projects for some of the best companies around the world. You'll be able to grow as you engage with multidisciplinary teams, multiple industries, and projects, overcoming the many challenges that will test and build your skills.

Responsibilities

• Develop and deliver production-level, cloud-native machine learning solutions
• Implement MLOps practices to ensure sustainability
• Utilize Python and related practices (git, code review, linters, unit tests, and CI/CD pipelines)
• Work with a modern ML stack: gradient boosting (LightGBM, XGBoost), scikit-learn, PyTorch, MLflow, and time series tooling
• Perform feature engineering, ML algorithms, model training, and evaluation
• Use Agentic AI tools like Cursor IDE and GitHub Copilot to accelerate code development, refactoring, and complex debugging
• Collaborate with engineering and product development teams
• Communicate fluently in English, both spoken and written

Requirements

• 5+ years of working experience in Machine Learning Engineering or closely related role
• Academic background in Computer Science, Data Science, Engineering, or related quantitative field
• Excellent proficiency in Python and related practices (git, code review, linters, unit tests, and CI/CD pipelines)
• Solid experience across a modern ML stack: gradient boosting (LightGBM, XGBoost), scikit-learn, PyTorch, MLflow, and time series tooling
• Strong understanding of feature engineering, ML algorithms, model training, and evaluation
• Outstanding proficiency in using Agentic AI tools like Cursor IDE and GitHub Copilot to accelerate code development, refactoring, and complex debugging
• Analytical mind with a strong problem-solving aptitude
• Experience collaborating with engineering and product development teams
• Fluency in English, both spoken and written
• Must live in Portugal or be willing and legally qualified to live and work there

We Offer

• Salary: €39,360 - €60,600/year
• Paid sick days
• Health and dental insurance
• Comfort budget
• Salary according to your experience and performance

About the Company

Imaginary Cloud is a Software Development and UX/UI Design company that has helped design, build, launch, and scale 300+ web and mobile applications. With offices in Portugal (Lisbon and Coimbra) and in the UK (London), we have been designing and developing innovative digital products for more than 10 years.

Founded in 2010, we pride ourselves on our human-centric culture that values people and empowers them. We offer a remote-first company, flexible working hours, global projects with industry-leading clients, an informal environment, team events to share knowledge and celebrate collectively, mentoring, and performance appraisals for solid growth potential.

Does this sound exactly like what you’re looking for? Then apply now, and let's get the conversation started!