Senior Data Scientist

Job Description

The job at a glance 

This is an exciting opportunity to help shape the future of work through advanced data science and AI within a globally scaled jobtech organisation.

As a Data Scientist, you will play a key role in advancing core areas of our platform, developing intelligent, data-driven solutions that meaningfully impact how millions of people find jobs and how employers connect with talent. Your work will directly improve user experiences at scale and help drive fairer, more effective outcomes across the labour market.

You will build and optimize in-house algorithms, work with the latest NLP and generative AI techniques, and develop intelligent conversational agents. Your work will directly improve how jobseekers and employers find the right opportunities and talent. 

Your responsibilities: 

Partner with Product: Act as a strategic partner to the Product organisation to run experiments, deliver research outcomes, and find solutions that positively impact the lives of millions of jobseekers and recruiters.  Understand deeply our users: Leverage large proprietary datasets to understand, segment, and predict user engagement, helping anticipate user needs before they arise.  Reinvent job matching: Build and optimize in-house algorithms that go beyond traditional search and recommendation engines, solving complex, multi-faceted problems across the platform.  Build conversational agents: Work with agentic frameworks and fine-tune LLMs to create autonomous, intelligent AI agents that guide users throughout their journey.  Be an active member of our community: Contribute to hackathons, training, and peer-to-peer knowledge exchange within the global data science community. 

Qualifications

Your skills and qualifications: 

Education: Master’s degree or higher in Computer Science, Mathematics, Statistics, Physics, or a related quantitative field.  Strategic Delivery: Proven experience working in an empirical research environment and partnering with Product teams to deliver and scale validated AI products.  Agentic Frameworks: Solid understanding of agentic frameworks (e.g., LangChain, LangGraph, CrewAI) and practical application for task automation or conversational experiences.  Behavioural Modelling & AI Expertise: Experience modelling and predicting user engagement, building AI-based search engines, recommender systems, or similar large-scale ranking models.  Generative AI & Technical Proficiency: Hands-on experience with LLM fine-tuning, Python, modern NLP frameworks, and familiarity with AWS SageMaker, Docker, and Airflow. Strong mathematical and statistical foundation.  Ethical Drive: Commitment to ethical and fair AI practices that ensure equitable outcomes for all users. 

Additional Information

Your benefits 

We’re a community here that cares as much about your life outside work as how you feel when you’re with us. Because your job shouldn’t take over your life, it should enrich it. Here are some of the benefits we offer: 

29 days holiday allowance + bank holidays  Private medical and dental healthcare  Pension contribution up to 10%  24/7 Employee Assistance Programme  Life Assurance Cover  Cycle to work scheme  Hybrid working model  Volunteering days 

Our commitment: 

Equal opportunities are important to us. We believe that diversity and inclusion at The Stepstone Group are critical to our success as a global company, so we want to recruit, develop, and keep the best talent. We encourage applications from everyone, regardless of background, gender identity, sexual orientation, disability status, ethnicity, belief, age, family or parental status, and any other characteristic.

As a global business we further our DEI and sustainability progress by working with national and international bodies and are proud to have been recognised for our work - both locally and internationally, including:

Armed Forces Covenant: Bronze Award, Employer Recognition Scheme  EcoVadis: Bronze Award  Fertility Friendly Employer, accredited by Fertility Matters at Work  RIDI (Recruitment Industry Disability) Awards: Inclusive Technology Award 2024  Stonewall: Gold Award  Stonewall: Top 100 Workplace Equality Index (85)