Senior Data Analyst I

RX Brasil; Greater London; On-site; GBP 60,000 - 90,000; Full time

Benefits offered by this job

Health benefits

Pension scheme

Paid time off

Job summary

Elsevier’s Search & AI Evaluation team seeks a Senior Data Analyst to lead analytics for search and retrieval systems, driving ranking quality and user satisfaction. You will own analytical workflows, metrics, and insights across cross-functional teams, influencing product decisions.

This role emphasizes expertise in experimentation, data storytelling, and scalable analytics on large-scale datasets with modern platforms like Databricks and Spark, while collaborating across engineering and

Qualifications

• Master’s or PhD in Data Analytics, Statistics, Computer Science, or related field, or equivalent practical experience.
• Significant experience in data analysis, business intelligence, or analytics roles.
• Proficiency in SQL and Python for large-scale data analysis.
• Advanced experience with data visualization and BI tools (Tableau, Power BI, Looker, matplotlib, seaborn).
• Experience with Databricks or similar large-scale data platforms.
• Excellent understanding of experimentation design, A/B testing, and statistical analysis.
• Experience defining and analyzing search/retrieval metrics (NDCG, recall, precision, ranking metrics).
• Proven ability to translate complex data into actionable insights and influence decisions.

Responsibilities

• Lead analytics and evaluation for search and retrieval systems to improve ranking quality and user experience.
• Define and standardize search evaluation metrics (NDCG, MAP, recall, precision, CTR).
• Analyze query behavior and content performance to identify optimization opportunities.
• Conduct deep-dive analyses on ranking performance, query intent, and retrieval gaps.
• Support evaluation of downstream applications (including GenAI-powered features)
• Design and lead A/B testing and experimentation frameworks for search improvements.
• Partner with product and data science to define success metrics and experiment strategies.
• Ensure statistical rigor in experiment design and interpretation.
• Build reusable experimentation templates and scalable analysis workflows.
• Own dashboards and reporting systems tracking search performance and engagement.
• Develop clear data storytelling for stakeholders and enable self-service analytics.

Skills

SQL

Python

Data visualization

Experimentation

A/B testing

Education

Master's or PhD in Data Analytics/Statistics/CS

Tools

Databricks

Spark

Job description

About the team

Elsevier’s mission is to help researchers, clinicians, and life sciences professionals advance discovery and improve health outcomes through trusted content, data, and analytics. As the landscape of science and healthcare evolves, we are pioneering intelligent discovery experiences — from Scopus AI and LeapSpace to ClinicalKey AI, PharmaPendium, and next-generation life sciences platforms. These products leverage retrieval-augmented generation (RAG), semantic search, and generative AI to make knowledge more discoverable, connected, and actionable across disciplines. The Search & AI Evaluation team sits within the Platform Data Science organization and is responsible for advancing enterprise-scale search, retrieval, and evaluation capabilities across Elsevier's global products.

About the role

We are looking for a Senior Data Analyst to lead analytics and evaluation efforts for search and retrieval systems. You will own key analytical workflows, define measurement strategies, and generate insights that directly improve ranking quality, relevance, and user experience. This role is ideal for someone with deep experience in search analytics, experimentation, and data visualization, who can operate with high autonomy and influence decision-making across cross-functional teams.

Key responsibilities

Search Evaluation & Analytics

• Perform a leading role in analysis of search and retrieval system performance, including ranking quality and relevance.
• Help define and standardize search evaluation metrics (e.g., NDCG, MAP, recall, precision, CTR).
• Analyze query behavior, user interaction signals, and content performance to identify optimization opportunities.
• Conduct deep-dive analyses on ranking performance, query intent, and retrieval gaps.
• Support evaluation of downstream applications (including GenAI-powered features) where they depend on retrieval quality.

Experimentation & Reporting

• Help design and lead A/B testing and experimentation frameworks for search and ranking improvements.
• Partner with product and data science to define success metrics and experiment strategies.
• Ensure statistical rigor in experiment design, analysis, and interpretation.
• Build reusable experimentation templates and scalable analysis workflows.

Data Visualization & Communication

• Own and evolve dashboards and reporting systems tracking search performance and user engagement.
• Develop clear, actionable data storytelling to communicate insights to technical and business stakeholders.
• Enable self-service analytics for partners through well-designed reporting tools.

Data Management & Tooling

• Work with large-scale datasets using modern platforms (e.g., Databricks, Spark, SQL-based systems).
• Ensure high standards for data quality, metric consistency, and instrumentation reliability.
• Collaborate with engineering to improve logging, tracking, and observability of search systems.

Cross-functional Impact & Mentorship

• Act as a key analytics partner to search data scientists, engineers, and product teams.
• Help elevate the team’s understanding of retrieval performance and measurement frameworks.

Required qualifications

• Master’s or PhD in Data Analytics, Statistics, Computer Science, or a related field (or equivalent practical experience).
• Significant experience in data analysis, business intelligence, or analytics roles.
• Proficiency in SQL and Python for large-scale data analysis.
• Advanced experience with data visualization and BI tools (e.g., Tableau, Power BI, Looker, matplotlib, seaborn).
• Experience working with Databricks or similar large-scale data platforms.
• Excellent understanding of experimentation design, A/B testing, and statistical analysis.
• Experience defining and analyzing search/retrieval metrics (e.g., NDCG, recall, precision, ranking metrics).
• Proven ability to translate complex data into actionable insights and influence decisions.

Preferred qualifications

• PhD in Data Analytics, Statistics, Computer Science, or a related field (or equivalent practical experience).
• Experience working on search, ranking, or recommendation systems.
• Familiarity with information retrieval concepts (e.g., indexing, ranking, query understanding).
• Exposure to clickstream data, user behavior analytics, and event tracking systems.
• Experience supporting evaluation of ML-based ranking or retrieval systems.
• Familiarity with RAG systems or GenAI applications.

Why join us?

Join our team and contribute to a culture of innovation, collaboration, and excellence. If you are ready to advance your career and make a significant impact, we encourage you to apply.

Work in a way that works for you

We promote a healthy work/life balance across the organization. We offer an appealing working prospect for our people. With numerous wellbeing initiatives, shared parental leave, study assistance and sabbaticals, we will help you meet your immediate responsibilities and your long-term goals.

Flexible working hours - flexing the times when you work in the day to help you fit everything in and work when you are the most productive.

Working for you

We know that your well-being and happiness are key to a long and successful career.

Benefits

• Holiday allowance with the option to buy additional days
• Health screening, eye care vouchers and private medical benefits
• Life assurance, plus optional additional life cover and spouse's life cover at own cost
• Access to a competitive contributory pension scheme
• Save As You Earn share option scheme
• Access to optional self funded benefits, including electric vehicle scheme, cycle to work scheme, dental insurance, critical illness cover, health cash plan, personal travel insurance
• Travel season ticket loan
• Paid time off when you become a parent, and paid time off for carers
• Support for personal and work-related challenges
• Access to emergency care for both the elderly and children
• Time off to support the charities and causes that matter to you
• Awards to recognize key service milestones

About the business

As a global leader in information and analytics, we help researchers and healthcare professionals advance science and improve health outcomes for the benefit of society. Building on our publishing heritage, we combine quality information and vast data sets with analytics to support visionary science and research, health education, and interactive learning, as well as exceptional healthcare and clinical practice.

At Elsevier, your work contributes to the world’s grand challenges and a more sustainable future. We harness innovative technologies to support science and healthcare to partner for a better world. We know your well-being and happiness are key to a long and successful career. We are delighted to offer country specific benefits.

We are committed to providing a fair and accessible hiring process. If you have a disability or other need that requires accommodation or adjustment, please let us know by completing our Applicant Request Support Form or please contact 1-855-833-5120.

We are an equal opportunity employer: qualified applicants are considered for and treated during employment without regard to race, color, creed, religion, sex, national origin, citizenship status, disability status, protected veteran status, age, marital status, sexual orientation, gender identity, genetic information, or any other characteristic protected by law.

Elsevier is a global leader in advanced information and decision support for science and healthcare. We believe that by working together with the communities we serve, we can shape human progress to go further, happen faster, and benefit all. We support continuous discovery and uphold the highest standards of content integrity, reliability, and reproducibility so the communities we serve can advance their field of science, healthcare or innovation with confidence. By combining high-quality content with powerful analytics, we transform complexity into clarity and deliver mission-critical insights that help professionals make better decisions when it matters most. We deliver insights that help research institutions, governments, and funders achieve their goals. We help researchers discover and share knowledge, collaborate, and accelerate innovation. We help librarians provide verified, quality information to universities. We help innovators turn knowledge into new products. We help health professionals improve patient care and educators train the next generation of doctors and nurses.

Connecting quality content and innovative technologies, we make progress go further and happen faster. And by championing inclusion and sustainability, we ensure progress benefits all.

With 9,500 employees, over 2,300 technologists in 5 major tech hubs, and more than 60 locations across the globe, we are committed to supporting the scientific and healthcare communities around the world. We offer a diverse range of opportunities across technology, commercial, business, and early career jobs. If you are looking for a career that inspires progress in science, innovation and health, and allows you to grow every day, find your team at Elsevier.

Elsevier is part of RELX Group. Let’s shape progress together. Join us.