1 to 25 of 178 Permanent A/B Testing Jobs in London

worldwide. In this role, you will: Lead the development and validation of advanced statistical methodologies to support Expedia Group’s experimentation platform, ensuring robust and reliable A / B testing across the website’s features and user experiences Collaborate closely with the experimentation platform team to design, implement, and scale new testing … Ability to work collaboratively within a small, focused team and liaise effectively with platform engineers and business partners Prior experience in experimentation platforms or A / B testing environments is highly desirable Autonomy and accountability to serve as a point of contact for statistical methodologies within the team Expedia … individuals with whom we have not made prior contact. Our email domain is @expediagroup.com. The official website to find and apply for job openings at Expedia Group is careers.expediagroup.com / jobs. Expedia is committed to creating an inclusive work environment with a diverse workforce. All qualified applicants will receive consideration for employment without regard to race, religion More ❯

worldwide. In this role, you will: Lead the development and validation of advanced statistical methodologies to support Expedia Group’s experimentation platform, ensuring robust and reliable A / B testing across the website’s features and user experiences Collaborate closely with the experimentation platform team to design, implement, and scale new testing … Ability to work collaboratively within a small, focused team and liaise effectively with platform engineers and business partners Prior experience in experimentation platforms or A / B testing environments is highly desirable Autonomy and accountability to serve as a point of contact for statistical methodologies within the team Expedia … individuals with whom we have not made prior contact. Our email domain is @expediagroup.com. The official website to find and apply for job openings at Expedia Group is careers.expediagroup.com / jobs. Expedia is committed to creating an inclusive work environment with a diverse workforce. All qualified applicants will receive consideration for employment without regard to race, religion More ❯

worldwide. In this role, you will: Lead the development and validation of advanced statistical methodologies to support Expedia Group’s experimentation platform, ensuring robust and reliable A / B testing across the website’s features and user experiences Collaborate closely with the experimentation platform team to design, implement, and scale new testing … Ability to work collaboratively within a small, focused team and liaise effectively with platform engineers and business partners Prior experience in experimentation platforms or A / B testing environments is highly desirable Autonomy and accountability to serve as a point of contact for statistical methodologies within the team Expedia … individuals with whom we have not made prior contact. Our email domain is @expediagroup.com. The official website to find and apply for job openings at Expedia Group is careers.expediagroup.com / jobs. Expedia is committed to creating an inclusive work environment with a diverse workforce. All qualified applicants will receive consideration for employment without regard to race, religion More ❯

worldwide. In this role, you will: Lead the development and validation of advanced statistical methodologies to support Expedia Group’s experimentation platform, ensuring robust and reliable A / B testing across the website’s features and user experiences Collaborate closely with the experimentation platform team to design, implement, and scale new testing … Ability to work collaboratively within a small, focused team and liaise effectively with platform engineers and business partners Prior experience in experimentation platforms or A / B testing environments is highly desirable Autonomy and accountability to serve as a point of contact for statistical methodologies within the team Expedia … individuals with whom we have not made prior contact. Our email domain is @expediagroup.com. The official website to find and apply for job openings at Expedia Group is careers.expediagroup.com / jobs. Expedia is committed to creating an inclusive work environment with a diverse workforce. All qualified applicants will receive consideration for employment without regard to race, religion More ❯

business growth and improve decision-making. The successful candidate will: Analyse large-scale datasets using SQL to uncover insights and inform strategy Build and optimise dashboards in Looker Studio / BigQuery for multiple stakeholders Support A / B testing, funnel analysis, and data modelling to enhance performance Contribute to the evolution of … commercial teams to translate data into actionable recommendations Communicate insights clearly across teams to influence business outcomes Role Requirements Strong technical skills in SQL and dashboarding tools (Looker Studio / BigQuery) Experience with A / B testing, funnel analysis, and data modelling Familiarity with data warehouse concepts and pipeline development (dbt, Airflow … oriented, and able to drive impact in a high-growth environment The Company You'll be joining a rapidly scaling consumer brand in the entertainment / iGaming sector. The business invests heavily in data and BI, fostering a collaborative and innovative environment where employees can influence commercial strategy, work with cross-functional teams More ❯

As a Data Scientist III on our Experimentation Science team, you will play a critical role in shaping the statistical methodologies that underpin Expedia Group s experimentation platform. Your work will ensure that every feature change on our website from button colors to booking flows is rigorously tested to maximize business impact. This role blends research … product decisions and customer experiences worldwide. Lead the development and validation of advanced statistical methodologies to support Expedia Group s experimentation platform, ensuring robust and reliable A / B testing across the website s features and user experiences Collaborate closely with the experimentation platform team to design, implement, and scale new testing … research and implementation Strong analytical mindset with the capacity to research, evaluate, and implement new statistical approaches and simulation frameworks Prior experience in experimentation platforms or A / B testing environments is highly desirable Expedia Group brands power global travel for everyone, everywhere. We design cutting-edge tech to make travel smoother and More ❯

Analyst, you'll be responsible for analysing digital journeys and on-site performance metrics across multiple brands. This role requires hands-on experience in product analytics, A / B testing, and working with web tracking tools. You'll also support tracking implementation by collaborating closely with the GTM and engineering teams. The business … ll also oversee two junior analysts, providing guidance and mentorship. YOUR SKILLS AND EXPERIENCE: Strong hands-on experience with GA4 (open to Adobe Analytics profiles) Proficiency in SQL and / or BigQuery Deep understanding of web / product analytics and on-site customer journey analysis Familiarity with tagging and tracking implementation (e.g., Google Tag Manager) Exposure to A / B testing methodologies Experience working cross-functionally in digital environments Team leadership or mentoring experience is a bonus More ❯

At Xe, we live currencies. We provide a comprehensive range of currency services and products, including our Currency Converter, Market Analysis, Currency Data API and quick, easy, secure Money Transfers for individuals and businesses. We leverage technology to deliver these services through our website, mobile app and by phone. Last year, we helped over 300 million people access … setting up campaigns in platforms like Google Ads, QAing landing pages, and managing tracking and performance reporting). Experimentation & Testing: Design, execute, and analyze A / B and multivariate tests across the user journey. Own experiment setup and post-test performance reporting to validate hypotheses and inform optimization. Market Benchmarking & Competitive Insights: Assist … other fast-paced, digital-first environments Bachelors degree in Business, Economics, Mathematics, Statistics, Engineering, or a related quantitative or analytical field Proficiency in analytics tools, including Excel / Google Sheets and at least one of: Amplitude, Power BI, SQL, or similar a similar tool Experience with A / B testing More ❯

At Xe, we live currencies. We provide a comprehensive range of currency services and products, including our Currency Converter, Market Analysis, Currency Data API and quick, easy, secure Money Transfers for individuals and businesses. We leverage technology to deliver these services through our website, mobile app and by phone. Last year, we helped over 300 million people access … setting up campaigns in platforms like Google Ads, QAing landing pages, and managing tracking and performance reporting). Experimentation & Testing: Design, execute, and analyze A / B and multivariate tests across the user journey. Own experiment setup and post-test performance reporting to validate hypotheses and inform optimization. Market Benchmarking & Competitive Insights: Assist … other fast-paced, digital-first environments Bachelors degree in Business, Economics, Mathematics, Statistics, Engineering, or a related quantitative or analytical field Proficiency in analytics tools, including Excel / Google Sheets and at least one of: Amplitude, Power BI, SQL, or similar a similar tool Experience with A / B testing More ❯

At Xe, we live currencies. We provide a comprehensive range of currency services and products, including our Currency Converter, Market Analysis, Currency Data API and quick, easy, secure Money Transfers for individuals and businesses. We leverage technology to deliver these services through our website, mobile app and by phone. Last year, we helped over 300 million people access … up campaigns in platforms like Google Ads, QA’ing landing pages, and managing tracking and performance reporting). Experimentation & Testing: Design, execute, and analyze A / B and multivariate tests across the user journey. Own experiment setup and post-test performance reporting to validate hypotheses and inform optimization. Market Benchmarking & Competitive Insights: Assist … fast-paced, digital-first environments Bachelor’s degree in Business, Economics, Mathematics, Statistics, Engineering, or a related quantitative or analytical field Proficiency in analytics tools, including Excel / Google Sheets and at least one of: Amplitude, Power BI, SQL, or similar a similar tool Experience with A / B testing More ❯

At Xe, we live currencies. We provide a comprehensive range of currency services and products, including our Currency Converter, Market Analysis, Currency Data API and quick, easy, secure Money Transfers for individuals and businesses. We leverage technology to deliver these services through our website, mobile app and by phone. Last year, we helped over 300 million people access … up campaigns in platforms like Google Ads, QA’ing landing pages, and managing tracking and performance reporting). Experimentation & Testing: Design, execute, and analyze A / B and multivariate tests across the user journey. Own experiment setup and post-test performance reporting to validate hypotheses and inform optimization. Market Benchmarking & Competitive Insights: Assist … fast-paced, digital-first environments Bachelor’s degree in Business, Economics, Mathematics, Statistics, Engineering, or a related quantitative or analytical field Proficiency in analytics tools, including Excel / Google Sheets and at least one of: Amplitude, Power BI, SQL, or similar a similar tool Experience with A / B testing More ❯

We are excited to offer an opportunity for a Ecommerce Site Merchandiser and Developer to join our Digital Merchandising team on a full-time basis for 12 months. This role will be based in our Merton office. The Ecommerce Site Merchandiser and Developer will drive sales and improve conversion across our digital channels through strategic site … drive data-led site and merchandising improvements Create ad-hoc and monthly reports to extract actionable insights Regularly review web analytics to optimize conversion via navigation, A / B testing, promotions, and AI features Collaborate with the Digital Marketing team to enhance SEO through optimized product listings and content Cross-Functional Collaboration Collaborate … strong visual sense for engaging online experiences Desirable skills Proficient in merchandising and analytics tools (e.g., Salesforce Commerce Cloud, Hotjar, Clarity, GA4) Skilled in A / B testing and CRO Strong understanding of UX / UI principles Experienced with Git and version control systems BENEFITS Staff discounts Health & Wellbeing support More ❯

We are excited to offer an opportunity for a Ecommerce Site Merchandiser and Developer to join our Digital Merchandising team on a full-time basis for 12 months. This role will be based in our Merton office. The Ecommerce Site Merchandiser and Developer will drive sales and improve conversion across our digital channels through strategic site … drive data-led site and merchandising improvements Create ad-hoc and monthly reports to extract actionable insights Regularly review web analytics to optimize conversion via navigation, A / B testing, promotions, and AI features Collaborate with the Digital Marketing team to enhance SEO through optimized product listings and content Cross-Functional Collaboration Collaborate … strong visual sense for engaging online experiences Desirable skills Proficient in merchandising and analytics tools (e.g., Salesforce Commerce Cloud, Hotjar, Clarity, GA4) Skilled in A / B testing and CRO Strong understanding of UX / UI principles Experienced with Git and version control systems BENEFITS Staff discounts Health & Wellbeing support More ❯

We are excited to offer an opportunity for a Ecommerce Site Merchandiser and Developer to join our Digital Merchandising team on a full-time basis for 12 months. This role will be based in our Merton office. The Ecommerce Site Merchandiser and Developer will drive sales and improve conversion across our digital channels through strategic site … drive data-led site and merchandising improvements Create ad-hoc and monthly reports to extract actionable insights Regularly review web analytics to optimize conversion via navigation, A / B testing, promotions, and AI features Collaborate with the Digital Marketing team to enhance SEO through optimized product listings and content Cross-Functional Collaboration Collaborate … strong visual sense for engaging online experiences Desirable skills Proficient in merchandising and analytics tools (e.g., Salesforce Commerce Cloud, Hotjar, Clarity, GA4) Skilled in A / B testing and CRO Strong understanding of UX / UI principles Experienced with Git and version control systems BENEFITS Staff discounts Health & Wellbeing support More ❯

UK workforce paid via IRIS payroll 📊 50,000 SMEs using our cloud bookkeeping 🏢 21,000 firms relying on us for compliance We’re more than software — we’re a transformative powerhouse 💡 driving compliance, efficiency & confidence for businesses. Officially certified as a Great Place to Work 🏆 and recognised as one of the UK's Best Workplaces for … the heart of optimising structure, UX, and conversion performance to deliver seamless digital experiences. 🎯 What you’ll do: Lead optimisation & performance of UK & international websites 🌐 Drive A / B testing, analyse metrics & implement improvements 📈 Collaborate with Product Marketing & Lead Gen teams 🤝 Manage our Senior Digital Designer to ensure consistent UX & visuals 🎨 Partner with … Partner to boost discoverability 🔍 🛠 What we’re looking for: Strong background in digital marketing & website optimisation 💻 Proven WordPress expertise 📝 (Marketo experience = bonus ✨) Solid grasp of UX & A / B testing methodologies 🔬 Data-driven mindset with analytical skills 📊 Experience in SaaS, enterprise software, or large B2B organisations ✅ 👥 Key Relationships You’ll be part of More ❯

About Us (NASDAQ: JD and HKEX: 9618), also known as JINGDONG, has evolved from a pioneering e-commerce platform into a leading technology and service provider with supply chain at its core. Renowned for its supply chain innovation and excellence, the company has … expanded into sectors including retail, technology, logistics, healthcare, and more, aiming to transform traditional business models with cutting-edge digital solutions. Know more about us: Key Responsibilities Develop ML / DL models (XGBoost / LSTM / GNN) for fraud detection & risk prediction Optimize models through feature engineering and A / B testing Deploy real-time decision algorithms supporting global business Minimum Qualifications Master's in ML / Stats / CS (exceptional Bachelor's considered) 3+ years risk algorithm development Proficient in Python / SQL / TensorFlow / PyTorch English technical literature proficiency Preferred Qualifications Experience in cross-border anti-fraud / credit scoring Publications More ❯

customer insight team to deliver actionable insights Own Bloomreach data analysis to power CRM and loyalty strategies Drive segmentation, event tracking, and workflow integrations Champion experimentation: A / B testing, regression, CLV, churn prediction Lead brand health tracking and competitor analysis Create guest avatars and embed segmentation across the business Design and deliver … CRM, loyalty, segmentation, and customer lifetime value Exceptional storytelling and presentation skills Passion for guest-first thinking and data-driven decision-making We are happy to provide application and / or accessibility support, please contact your Marks Sattin or Grafton consultant directly to discuss your needs. We're committed to protecting the privacy of all our candidates and clients … please visit https: / / privacy and https: / / en / privacy-policy-1 for our privacy policy. More ❯

Data Analyst – £285 / day | 10-Month Contract | Hybrid (London) We’re looking for an experienced Data Analyst to join a global Customer Success Data Science team , working on initiatives that enhance customer experience and operational excellence across international markets. This is an exciting opportunity to make a real impact by building data foundations, enabling … success teams. Deliver deep-dive analytics: Identify root causes of performance trends, customer pain points, and operational inefficiencies, turning insights into actionable recommendations. Support experimentation: Analyse A / B tests and digital experience initiatives to measure impact and inform continuous improvement. Tell the story with data: Communicate insights effectively to both technical and non-technical … data platforms (Snowflake, Databricks, Spark) and ETL processes . Working knowledge of Python or R for analytics or automation (preferred). Understanding of statistical methods and A / B testing . Excellent storytelling and communication skills to translate data into actionable insights. Experience with contact centre or digital support metrics is a More ❯

Data Analyst – £285 / day | 10-Month Contract | Hybrid (London) We’re looking for an experienced Data Analyst to join a global Customer Success Data Science team , working on initiatives that enhance customer experience and operational excellence across international markets. This is an exciting opportunity to make a real impact by building data foundations, enabling … success teams. Deliver deep-dive analytics: Identify root causes of performance trends, customer pain points, and operational inefficiencies, turning insights into actionable recommendations. Support experimentation: Analyse A / B tests and digital experience initiatives to measure impact and inform continuous improvement. Tell the story with data: Communicate insights effectively to both technical and non-technical … data platforms (Snowflake, Databricks, Spark) and ETL processes . Working knowledge of Python or R for analytics or automation (preferred). Understanding of statistical methods and A / B testing . Excellent storytelling and communication skills to translate data into actionable insights. Experience with contact centre or digital support metrics is a More ❯

Data Analyst – £285 / day | 10-Month Contract | Hybrid (London) We’re looking for an experienced Data Analyst to join a global Customer Success Data Science team , working on initiatives that enhance customer experience and operational excellence across international markets. This is an exciting opportunity to make a real impact by building data foundations, enabling … success teams. Deliver deep-dive analytics: Identify root causes of performance trends, customer pain points, and operational inefficiencies, turning insights into actionable recommendations. Support experimentation: Analyse A / B tests and digital experience initiatives to measure impact and inform continuous improvement. Tell the story with data: Communicate insights effectively to both technical and non-technical … data platforms (Snowflake, Databricks, Spark) and ETL processes . Working knowledge of Python or R for analytics or automation (preferred). Understanding of statistical methods and A / B testing . Excellent storytelling and communication skills to translate data into actionable insights. Experience with contact centre or digital support metrics is a More ❯

Data Analyst – £285 / day | 10-Month Contract | Hybrid (London) We’re looking for an experienced Data Analyst to join a global Customer Success Data Science team , working on initiatives that enhance customer experience and operational excellence across international markets. This is an exciting opportunity to make a real impact by building data foundations, enabling … success teams. Deliver deep-dive analytics: Identify root causes of performance trends, customer pain points, and operational inefficiencies, turning insights into actionable recommendations. Support experimentation: Analyse A / B tests and digital experience initiatives to measure impact and inform continuous improvement. Tell the story with data: Communicate insights effectively to both technical and non-technical … data platforms (Snowflake, Databricks, Spark) and ETL processes . Working knowledge of Python or R for analytics or automation (preferred). Understanding of statistical methods and A / B testing . Excellent storytelling and communication skills to translate data into actionable insights. Experience with contact centre or digital support metrics is a More ❯

Senior Data Scientists / Analysts – SC / DV Cleared – (Military / Veteran-Friendly) — Multiple Openings 🌳 Location: London (Remote & Hybrid options) 🌳 Employment: Permanent 🌳 Clearance: Current SC or DV required 🌳 Make sense of mission-critical data that actually drives decisions. 🌳 Areti Group is partnering with one of the UK’s fastest-growing Series A-funded tech start … sensitive environments. Collaborate across engineering, security, and product teams to deliver at pace and scale. The toolkit you’ll use 🌳 Data Science & Engineering: Python (NumPy, Pandas, scikit-learn, PyTorch / TensorFlow), SQL, NoSQL, Spark, big data ecosystems Visualisation & APIs: REST / JSON, Postman, Flask / FastAPI, Power BI / Tableau, D3.js DevOps & Cloud: CI / CD, Docker, AWS (S3, Lambda, SageMaker), Kubernetes, Terraform / CDK ML Ops & Automation: MLFlow, feature stores, model monitoring, A / B testing Data Security & Compliance: Secure SDLC, ISO / NIST, data governance, GDPR-compliant pipelines Collaboration & Control: Git-based workflows, Jira, Confluence, automated testing suites Must-have experience More ❯

Senior Data Scientists / Analysts – SC / DV Cleared – (Military / Veteran-Friendly) — Multiple Openings 🌳 Location: London (Remote & Hybrid options) 🌳 Employment: Permanent 🌳 Clearance: Current SC or DV required 🌳 Make sense of mission-critical data that actually drives decisions. 🌳 Areti Group is partnering with one of the UK’s fastest-growing Series A-funded tech start … sensitive environments. Collaborate across engineering, security, and product teams to deliver at pace and scale. The toolkit you’ll use 🌳 Data Science & Engineering: Python (NumPy, Pandas, scikit-learn, PyTorch / TensorFlow), SQL, NoSQL, Spark, big data ecosystems Visualisation & APIs: REST / JSON, Postman, Flask / FastAPI, Power BI / Tableau, D3.js DevOps & Cloud: CI / CD, Docker, AWS (S3, Lambda, SageMaker), Kubernetes, Terraform / CDK ML Ops & Automation: MLFlow, feature stores, model monitoring, A / B testing Data Security & Compliance: Secure SDLC, ISO / NIST, data governance, GDPR-compliant pipelines Collaboration & Control: Git-based workflows, Jira, Confluence, automated testing suites Must-have experience More ❯

Senior Data Scientists / Analysts – SC / DV Cleared – (Military / Veteran-Friendly) — Multiple Openings 🌳 Location: London (Remote & Hybrid options) 🌳 Employment: Permanent 🌳 Clearance: Current SC or DV required 🌳 Make sense of mission-critical data that actually drives decisions. 🌳 Areti Group is partnering with one of the UK’s fastest-growing Series A-funded tech start … sensitive environments. Collaborate across engineering, security, and product teams to deliver at pace and scale. The toolkit you’ll use 🌳 Data Science & Engineering: Python (NumPy, Pandas, scikit-learn, PyTorch / TensorFlow), SQL, NoSQL, Spark, big data ecosystems Visualisation & APIs: REST / JSON, Postman, Flask / FastAPI, Power BI / Tableau, D3.js DevOps & Cloud: CI / CD, Docker, AWS (S3, Lambda, SageMaker), Kubernetes, Terraform / CDK ML Ops & Automation: MLFlow, feature stores, model monitoring, A / B testing Data Security & Compliance: Secure SDLC, ISO / NIST, data governance, GDPR-compliant pipelines Collaboration & Control: Git-based workflows, Jira, Confluence, automated testing suites Must-have experience More ❯

Senior Data Scientists / Analysts – SC / DV Cleared – (Military / Veteran-Friendly) — Multiple Openings 🌳 Location: London (Remote & Hybrid options) 🌳 Employment: Permanent 🌳 Clearance: Current SC or DV required 🌳 Make sense of mission-critical data that actually drives decisions. 🌳 Areti Group is partnering with one of the UK’s fastest-growing Series A-funded tech start … sensitive environments. Collaborate across engineering, security, and product teams to deliver at pace and scale. The toolkit you’ll use 🌳 Data Science & Engineering: Python (NumPy, Pandas, scikit-learn, PyTorch / TensorFlow), SQL, NoSQL, Spark, big data ecosystems Visualisation & APIs: REST / JSON, Postman, Flask / FastAPI, Power BI / Tableau, D3.js DevOps & Cloud: CI / CD, Docker, AWS (S3, Lambda, SageMaker), Kubernetes, Terraform / CDK ML Ops & Automation: MLFlow, feature stores, model monitoring, A / B testing Data Security & Compliance: Secure SDLC, ISO / NIST, data governance, GDPR-compliant pipelines Collaboration & Control: Git-based workflows, Jira, Confluence, automated testing suites Must-have experience More ❯