Senior Data Scientist - Workday Products

Kainos; Belfast City District; On-site; GBP 70,000 - 110,000; Full time

Job summary

Kainos is hiring a Senior Data Scientist for our Workday Products division in Belfast. You will develop high-quality AI/ML solutions for a growing suite of Workday offerings, including Smart Test, Smart Audit and Smart Shield, improving performance and reliability.

You may take on line management duties for junior staff and collaborate with engineering teams to deploy models in production, using Python, ML frameworks, and cloud services.

Qualifications

• Typically 4-5 years of relevant industry experience, or less with a related PhD.
• Proficient in applying math, stats, and ML to derive insights.
• Proficient in Python with production-grade code.
• Hands-on experience with ML frameworks (e.g., Scikit-learn, TensorFlow, PyTorch).
• Experience deploying AI/ML models to production with engineering teams.
• Experience with generative AI use cases and large language models.
• Basic experience with cloud technologies (AWS/Azure/GCP).
• Experience creating dashboards using Dash or Streamlit to communicate findings.
• Strong interpersonal skills and ability to lead client projects.

Responsibilities

• Develop high quality AI/ML solutions for Workday products (Smart, Audit, Shield).
• Design and deliver AI/ML solutions enhancing functionality, scalability and efficiency.
• Possibly provide line management responsibilities for junior team members.

Skills

Python

ML frameworks

Production deployment

LLMs

Data visualization

Client leadership

Education

MSc or PhD in quantitative field

Tools

Docker

Kubernetes

AWS

PostgreSQL

Streamlit

Hugging Face

Job description

Join Kainos and Shape the Future

At Kainos, we’re problem solvers, innovators, and collaborators - driven by a shared mission to create real impact. Whether we’re transforming digital services for millions, delivering cutting‑edge Workday solutions, or pushing the boundaries of technology, we do it together.

We believe in a people‑first culture, where your ideas are valued, your growth is supported, and your contributions truly make a difference. Here, you’ll be part of a diverse, ambitious team that celebrates creativity and collaboration.

Ready to make your mark? Join us and be part of something bigger.

As a Senior Data Scientist within Kainos’ Workday Products division, you'll be responsible for developing high quality AI and ML solutions for our fast growing suite of Workday products – including Kainos Smart (Smart Test, Smart Audit and Smart Shield), Employee Document Management and Pay Transparency Analyzer. You will work on the design and delivery of advanced AI/ML solutions that improve the functionality, scalability and efficiency of our Workday product suite. You may also carry some formal line management responsibilities, including appraisals, for more junior members of the team.

Essential Experience:

• Typically 4-5 years of relevant industry experience, or less when combined with a relevant PhD.


• Proficient in applying mathematics, statistics, and machine learning principles to derive actionable insights from complex datasets.


• Proficient in Python programming, with a focus on writing clean, efficient, and maintainable code for developing and deploying reliable AI/ML solutions in production environments.


• Hands‑on experience using machine learning frameworks (e.g., Scikit-learn, TensorFlow, PyTorch) to design and implement solutions.


• Experience deploying AI/ML models to production systems in collaboration with engineering teams.


• Experience working with generative AI use cases, leveraging large language models (e.g., OpenAI GPT, Hugging Face Transformers) to solve real‑world problems such as text summarisation, chatbots, or content generation.


• Basic experience with cloud technologies (e.g., AWS, Azure, or GCP).


• Experience creating interactive visualizations and dashboards using tools such as Dash or Streamlit to communicate findings effectively.


• Strong interpersonal skills, with the ability to lead client projects and explain technical concepts in non‑technical terms.

Desirable Experience:

• Advanced degree (MSc or PhD) in a quantitative field like Computer Science, Machine Learning, Operational Research, or Statistics.


• Proven track record of delivering data science projects, especially in enterprise software or SaaS environments.


• Basic familiarity with CI/CD pipelines and MLOps practices, including automated testing, model versioning, and monitoring workflows.


• Hands‑on experience with containerisation and orchestration technologies (e.g., Docker, Kubernetes) to support AI/ML model deployment.


• Proficiency in cleansing, filtering, and integrating data from diverse sources, including relational databases (e.g., PostgreSQL, MySQL) and NoSQL databases (e.g., MongoDB, DynamoDB).


• Familiarity with Workday data structures, APIs, and reporting tools.


• Demonstrable experience mentoring junior team members, with some involvement in formal performance appraisal processes, and fostering collaboration within teams.


• Prior involvement in knowledge‑sharing activities within teams or through public forums (conferences, blogs, etc.).

Embracing our differences

At Kainos, we believe in the power of diversity, equity and inclusion. We are committed to building a team that is as diverse as the world we live in, where everyone is valued, respected, and given an equal chance to thrive. We actively seek out talented people from all backgrounds, regardless of age, race, ethnicity, gender, sexual orientation, religion, disability, or any other characteristic that makes them who they are. We also believe every candidate deserves a level playing field.

Our friendly talent acquisition team is here to support you every step of the way, so if you require any accommodations or adjustments, we encourage you to reach out.

We understand that everyone's journey is different, and by having a private conversation we can ensure that our recruitment process is tailored to your needs.