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Data Scientist
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At a glance
- Employment type
- Full-time
- Workplace
- Remote
- Category
- Data engineering
Technologies & skills
What you'll be doing
Hands-on Data Scientist role in Dublin (remote, Ireland-based) for an international tech company. Work on statistical modeling, ML, data engineering, and analytics. Build predictive models, data pipelines, and collaborate with product, engineering, and business teams. Requires 3-5 years' experience and strong Python/ML skills.
- Investigate open-ended data problems and independently develop solutions
- Design, develop, and maintain machine learning models and production-grade data pipelines
- Prepare, clean, and structure large, complex datasets for analysis and modeling
- Develop and improve predictive, classification, and entity-resolution models
- Measure and refine model performance using real-world data
- Determine appropriate use of ML, automated data integration, or LLM-based techniques
- Translate commercial or methodological questions into technical solutions
- Explain model performance, bias, and data confidence to stakeholders
Key requirements
Must-have
- Approximately three to five years of experience in applied data science, machine learning, or related technical role
- Strong Python development skills
- Experience with libraries such as pandas, NumPy, scikit-learn, TensorFlow, or PyTorch
- Understanding of database design, data schemas, efficient querying, and pipeline development
- Experience deploying ML models into production and monitoring performance
- Ability to work across data preparation, modeling, engineering, and production implementation
- Strong written and verbal communication skills
- Ability to manage work independently and follow tasks through to completion
Nice-to-have
- Experience with REST API development
- Experience with Django REST Framework or comparable frameworks
Experience: 3-5 years in applied data science, machine learning, or a closely related technical role
Role signals
- Technical focus
- data science, machine learning, data engineering
- Hands-on vs management
- Hands-on
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Full job description
Data Scientist
- Location: Dublin, Ireland, primarily remote with occasional in-person collaboration
- Team: Product
- Reporting to: Head of Product, US-based
- **Must have Irish/EU Citizenship **
Cpl are partnering with an innovative international technology organisation to recruit a Data Scientist for its growing Product team in Ireland.
This is a hands-on position for a Data Scientist who enjoys solving complex, loosely defined problems and taking ownership from initial investigation through to production delivery. The successful candidate will work across statistical modelling, machine learning, data engineering and analytical problem-solving.
You will contribute to the development of predictive models, classification solutions and scalable data pipelines. The role offers the opportunity to work closely with product, engineering and customer-facing teams while helping turn large and complex datasets into practical insights and reliable technical solutions.
Key responsibilities
- Investigate open-ended data problems, define an appropriate approach and independently develop solutions through testing and iteration.
- Design, develop and maintain machine learning models and production-grade data pipelines.
- Prepare, clean and structure large, complex and sometimes unstructured datasets for analysis and modelling.
- Develop and improve predictive, classification and entity-resolution models.
- Measure model performance against real-world outcomes and refine solutions using data-led feedback.
- Determine when traditional machine learning, automated data integration or LLM-based techniques are most appropriate.
- Work with product, engineering and business stakeholders to translate commercial or methodological questions into clear technical solutions.
- Provide understandable explanations of areas such as model performance, bias, data confidence and coverage limitations.
- Use Python, machine learning libraries, databases and querying tools across the full development lifecycle.
- Explore new technologies and AI-assisted workflows that can improve delivery speed and quality.
- Maintain clear documentation covering methodologies, code, models and data structures.
Experience and skills
- Approximately three to five years of experience in applied data science, machine learning or a closely related technical role.
- Strong Python development skills, with experience using libraries such as pandas, NumPy, scikit-learn, TensorFlow or PyTorch.
- Good understanding of database design, data schemas, efficient querying and reliable pipeline development.
- Practical experience deploying machine learning models into production and monitoring their ongoing performance.
- Ability to work across data preparation, modelling, engineering and production implementation.
- Strong written and verbal communication skills, including the ability to explain technical decisions and trade-offs to non-technical audiences.
- Demonstrated ability to manage work independently, maintain momentum and follow tasks through to completion.
- Degree in Computer Science, Statistics, Applied Mathematics or another relevant discipline. Equivalent practical experience will also be considered.
- Experience with REST API development, Django REST Framework or a comparable framework would be advantageous.
The person
The ideal candidate will be comfortable working in an environment where every problem does not arrive with a predefined solution. You will be proactive, commercially aware and confident making informed technical decisions.
You should enjoy delivering an effective first version, evaluating it against real data and improving it through iteration. Curiosity around emerging tools, machine learning techniques and AI-enabled development approaches will be particularly valuable.
What the role offers
- A high-ownership position within a growing product and data function.
- The opportunity to work across machine learning, data science and data engineering.
- Exposure to complex datasets and meaningful production use cases.
- Collaboration with international product, engineering and business stakeholders.
- A primarily remote working arrangement, with occasional in-person sessions in Dublin.
#LI-JM2
Interview prep pack
Grounded in this listing. Use it to prepare examples before you apply.
Your interview focus
Based on this listing, the Data Scientist role emphasizes hands-on development of machine learning models, data pipelines, and analytical solutions, with a strong focus on independent problem-solving and collaboration across product and engineering teams.
- Independent problem-solving·High
- Production ML deployment·High
- Technical communication·High
- Data engineering·Medium
Only have 30 minutes?
Follow a focused preparation plan based on this job.
Start 30-minute prep
Your 30-minute plan
Review End-to-End ML Project Examples
0–8 minSelect 1-2 recent projects where you owned the process from problem definition to production deployment, and prepare concise summaries.
Refresh Data Pipeline and Engineering Skills
8–15 minRevisit your experience with Python, pandas, NumPy, and pipeline development, focusing on handling large or unstructured datasets.
Practice Explaining Technical Concepts
15–20 minPrepare to clearly explain model performance, bias, and technical decisions to non-technical audiences using real examples.
Research the Team's Product and Data Focus
20–25 minLook up the company's product offerings and consider how data science supports their goals, preparing relevant questions.
Prepare Questions for the Interviewers
25–30 minSelect 2-3 thoughtful questions from the provided list to ask during your interview.
Talking points
, 5 itemsEnd-to-End Machine Learning Lifecycle
Be ready to discuss how you have taken a model from initial concept through data preparation, training, evaluation, deployment, and monitoring, as this role expects ownership across the full lifecycle.
Data Engineering and Pipeline Development
Prepare examples of building and maintaining robust data pipelines, including handling large, complex, or unstructured datasets, as this is a core responsibility.
Model Performance Evaluation and Iteration
Demonstrate your approach to measuring, interpreting, and improving model performance using real-world data, including handling bias and explaining limitations.
Technical Communication with Non-Technical Stakeholders
Showcase your ability to translate technical findings into actionable insights and explain complex concepts to product, business, or customer-facing teams.
Selecting Appropriate ML or LLM Techniques
Be prepared to discuss how you choose between traditional ML, automated data integration, or LLM-based approaches for different problem types.
What to research
, 4 itemsRecent Machine Learning Projects
Review your recent end-to-end ML projects, focusing on problem definition, data preparation, model development, deployment, and iteration.
Data Pipeline Engineering
Prepare to discuss your experience building and maintaining data pipelines, especially for large or unstructured datasets using Python and relevant libraries.
Model Evaluation and Monitoring
Be ready to explain your approach to evaluating, monitoring, and refining models in production environments.
Technical Communication Examples
Gather examples where you explained technical concepts or decisions to non-technical stakeholders.
Questions to ask
, 6 itemsWhat are the most common types of data problems the team is currently tackling?
Why ask this? To understand the practical challenges and focus areas you would encounter.
How is success measured for data science projects within the product team?
Why ask this? To clarify expectations and evaluation criteria for your work.
What is the typical workflow for deploying and monitoring machine learning models in production?
Why ask this? To assess the maturity of the team's ML operations and your potential responsibilities.
How does the team collaborate with engineering and business stakeholders during project development?
Why ask this? To gauge the level of cross-functional interaction and communication required.
What opportunities are there to explore or implement new machine learning or AI technologies?
Why ask this? To understand the team's openness to innovation and your ability to contribute new ideas.
How often do in-person collaboration sessions occur, and what is typically covered during these meetings?
Why ask this? To clarify expectations around remote work and occasional in-person requirements.
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