1 to 25 of 387 A/B Testing Jobs

Lead CRO Developer

Location
Greater London, England, United Kingdom
Role overview We are looking for a highly experienced, hands‐on Lead CRO Developer to build and deliver A / B and multivariate experiments across our client accounts. This is fundamentally a development role. The majority of the role is hands … help maintain high development and QA standards, while remaining deeply hands‐on day to day. What you will be doing Build A / B and multivariate experiments from supplied concepts, designs and test specifications. Write clean, robust JavaScript (ES6+), HTML5 and CSS3 to create experiment ...

CRO Executive

Location
Greater London, England, United Kingdom
Location: Daily Mail+ Headquarters, HSK, London Position: Full Time / Permanent About Us / The Role DailyMail+ has just reached its second birthday. Live across the UK, US and Australia, we're one of the fastest-growing media subscriptions globally, with ambitious plans over the next few years … subscriptions in the UK, US, and AU. Collaborate with product, brand, analytics, editorial, CRM, newsletter, QA teams to build and launch A / B tests as well as subscription campaigns. Help manage the CRO roadmap items: keep the roadmap up to date, set-up test ...

Data Scientist - Partner Flow Team

Location
Greater London, England, United Kingdom
Measuring whether letting eligible customers know they can borrow more increases CLtV, using causal inference methods beyond a standard A / B test. Partner funnel. Building a clear view from application to drawdown, finding where customers drop off, and testing … calibration as first-order concerns. Causal inference and experimentation. You have designed and analysed experiments where separating signal from noise mattered – A / B tests, quasi-experiments, or lift studies. You know where A / B testing breaks ...

Machine Learning Scientist II

Location
Greater London, England, United Kingdom
side marketplace (the traveler, the property owners and the platform), this team develops and optimizesranking modelswith state-of-the‐art machine learning / genAI techniques topowerlodgingsearchand personalizedlodging ranking / recommendations for the multiple brands and lines of business in our portfolio. In this role, your expertise and passion … applied scientist role: your models will be deployed to our production systems,and your results will be measured objectively via A / B testing, directly impacting our business results. We collaborate closely with the analytics, product, and engineering teams. In this role ...

Sr. Performance Marketing Mgr, Veeqo

Hiring Organisation
Amazon
Location
Swansea, Neath Port Talbot, Wales, United Kingdom
Employment Type
Permanent
important the candidate can foster a creative team environment, inventing new approaches to ad creative and targeting, building robust A / B testing structures, diving deep into campaign performance data, and doubling down on what's performing. Key job responsibilities … Lead marketing automation and audience strategy implementation to drive program efficiency and improve lead quality. - Establish rigorous testing frameworks (A / B, incrementality, geo-lift) and optimization processes. Develop metrics and measurement to determine campaign effectiveness and true incremental impact. - Lead budget planning ...

UX Designer (Mid-to-Senior)

Location
Cheltenham, England, United Kingdom
Figma Using analytics, heatmaps and session recordings to understand how people behave Developing evidence‐based CRO hypotheses Designing variations for A / B tests and experiments Supporting the planning and delivery of experimentation Analysing test performance and using what we learn to inform future design … session recordings Turning observations into testable hypotheses Prioritising opportunities based on evidence and potential impact Designing variations for experiments Reviewing A / B test results Understanding why an experiment did or didn’t work Turning successful experiments into permanent UX improvements Helping clients get more ...

Product Growth (apps)

Location
Greater London, England, United Kingdom
each product or client, and building the system to get users there Commitment screen and paywall strategy - copy, structure, timing, and A / B testing to maximise conversion without eroding trust Monetisation strategy - pricing presentation, upsell sequencing, trial-to-paid mechanics, and expansion … revenue thinking Retention and lifecycle - cohort analysis, churn identification, win-back programmes, and engagement loops that sustain ARPU over time A / B testing culture - building a rigorous, fast-moving experimentation practice with proper statistical thinking Client-facing growth audits - reviewing ...

Head of Engineering, Rewards Platform (Remote)

Location
Greater London, England, United Kingdom
a leader who has built and shipped direct-to-consumer products at scale, who is fluent in experimentation and A / B testing, and who has real depth in front-end and mobile engineering — not a purely backend platform … hiring engineers and Engineering Managers, and leading through those managers as the team scales. Establishing a strong experimentation culture: A / B testing, cohort analysis, and measurement that lets the team learn quickly what actually changes customer behaviour. Working closely with ...

Data Scientist New London

Location
Greater London, England, United Kingdom
with platform outputs, investigating discrepancies, and validating features and metrics. This offers the opportunity to develop deep expertise in experimentation and A / B testing across a sophisticated internal platform. As the platform evolves, the role will expand into more advanced … automate QA processes and improve the efficiency and quality of validation. Build a deep understanding of experimentation methodologies, including A / B testing, monitoring, segmentation, and analysis. Collaborate with BI, Machine Learning, product teams, and other stakeholders to understand requests ...

Product Analyst

Hiring Organisation
Xebia
Location
Amsterdam, Noord-Holland, Netherlands
Employment Type
Permanent
Salary
EUR Annual
analysis build reports and dashboards to inform business decisions and strategic planning apply advanced analytics for predictive capabilities and segmentation lead A / B testing and deep-dive analyses using the scientific method define tagging plans and measure impact across site, campaigns … user behavior with Product, UX, and Marketing foster a data-driven culture within product teams track SEO share-of-voice by brand / model and develop dashboards on inventory depth vs ranking design and evaluate SEO experiments including indexing thresholds and pagination logic Belangrijkste vereisten 5+ years ...

Data Scientist III, Hotels.com Analytics

Location
Greater London, England, United Kingdom
customers and booking data to uncover patterns, diagnose issues, and suggest clear growth and optimization paths. Design, conduct, and analyze experiments (A / B tests, Pre / Post) for product and marketing initiatives, leveraging industry best practices and internal experimentation platforms. Develop and leverage … insights and recommendations to support decision‐making. Drive action to improve Hotels.com KPIs (such as revenue, engagement, retention, and marketplace health), utilizing the 80 / 20 rule to focus effort on the most impactful results. Demonstrate creativity and persistence in overcoming roadblocks. Develop and maintain clear and user‐friendly ...

Senior Data Scientist, Product Analytics

Location
Greater London, England, United Kingdom
deploy advanced machine learning models to solve complex business challenges and drive data-informed decision making. Design and lead complex A / B and causal experiments to measure the impact of localization changes on traveler engagement and booking conversion; own the experimentation framework … scale. Lead and mentor data scientists and engineers, fostering technical excellence and a culture of continuous learning. Safely integrate and operate AI / ML‐enabled solutions that improve outcomes, ensuring models are reliable, ethical, and scalable. Co‐own with Product and business leaders the metric frameworks ...

Senior Business Intelligence Analyst (Digital and Engagement)

Hiring Organisation
MS Society
Location
North London, London, United Kingdom
Employment Type
Permanent, Part Time, Work From Home
Salary
£35,000
with flexibility to work remotely Salary: Starting from £36,542 per annum plus excellent benefits Salary Band and Job Family: Band 2, Profession / Technical Youll start at our entry point salary of £36,542 per annum, increasing to £38,827 after 6 months service and satisfactory performance … Creating, maintaining and improving Power BI dashboards and reports that turn complex data into accessible, actionable insight Using digital channel analytics, A / B testing, conversion analysis and user behaviour insight to help optimise digital content and journeys Managing complex analytical projects, gathering ...

UI Designer

Location
England, United Kingdom
research-heavy role, you will be expected to engage directly with end users to validate your ideas through A / B testing and by observing real-world usage patterns. You should be able to work closely with product managers, product owners, developers … design options Collaborate with the product and development teams to identify areas where UI changes can improve usability Lead and support A / B testing efforts to assess and iterate on design decisions Engage with users (via interviews, feedback sessions, and usage analytics ...

Senior Product Manager, Loyalty

Location
Greater London, England, United Kingdom
using data to refine what is shown, where, and when across the funnel. Familiarity with AI-driven systems, tools, or workflows and applying AI / ML concepts to real world products, including safely integrating and operating AI / ML‐enabled solutions that enhance personalization, targeting, or testing … messaging roadmaps. Demonstrated experience taking products or member-facing communication strategies from concept through launch to scaled adoption, including structured A / B testing, iterative optimization, and ongoing lifecycle management. Hands‐on experience leveraging AI / ML-enabled solutions to improve ...

Senior Performance Marketing Manager, Amazon Leo, EMEA B2C

Location
Greater London, England, United Kingdom
executing the programmatic media strategy across Demand‐Side Platforms (DSPs), managing agency partnerships, and optimizing campaign performance to maximize subscriber acquisition at efficient CPA / ROAS targets across all EMEA markets. The ideal candidate is a data‐driven, customer‐obsessed self‐starter with deep expertise in programmatic … improving the customer experience. You will work with agency partners and cross‐functional teams to build scalable programmatic campaigns, develop robust measurement frameworks (MMM / MTA), and champion automation and testing to continuously improve performance. In this role, you will collaborate with a range ...

Front-End Web Specialist (12-month fixed term contract)

Location
Greater London, England, United Kingdom
room with developers, designers, and marketers alike, this is your role. What You’ll Do Technical Ownership & QA Build and ship pages / components directly in Storyblok CMS: component configuration, staging, QA, and production deployment across market versions QA every release technically — rendering, functionality, and cross‐browser / … delivery, and risk Maintain the web backlog and sprint board with clear status, ownership, and blockers Support CRO initiatives: help build A / B test setups, document hypotheses, and track experiment results Process & Reporting Maintain intake templates, briefing standards, and triage criteria Produce regular status ...

Product Data & User Insight Analyst

Location
Greater London, England, United Kingdom
track and analyse agreed product KPIs and performance measures, including areas such as conversion, engagement and retention. You support and deliver A / B testing, experimentation and conversion rate optimisation (CRO) activity across relevant digital journeys. You translate user research, behavioural data … ability to identify meaningful patterns and trends. Experience designing and delivering end-to-end UX research, including interviews, usability testing and / or surveys. Experience using user research platforms such as Userlytics, UserTesting or equivalent. Experience combining qualitative research with quantitative behavioural data to produce actionable insight. ...

Senior Decision Scientist, Frontend Technologies

Hiring Organisation
Vinted
Location
Amsterdam, Noord-Holland, Netherlands
Employment Type
Permanent
Salary
EUR Annual
This role offers cross-functional influence, scope across Android, iOS, and Web, and the chance to shape a high-scale marketplace. Arbeidsvoorwaarden / Benefits share options programme 25 days of paid annual leave Newest MacBook models EAP for you and your family learning budget hybrid work Verantwoordelijkheden … inform decisions Co-create in discovery with engineering and design to size opportunities and set baseline metrics Design, monitor, and analyze A / B tests to evaluate platform optimizations Collaborate with the broader Data Science & Analytics community to standardize tooling Belangrijkste vereisten Experience in decision ...

Digital Strategist

Location
Greater London, England, United Kingdom
experience for the customer journey across the different digital channels. Interpret statistical information to advise strategically on UX and content improvements on client web / app platforms. Lead the strategy on client projects with the support of the Associate Strategist, including supporting client communications. Oversee optimisation directives, e.g. A … / B testing programmes. Sell iterative research activities and champion a culture of continued learning and improvement. Establish credibility both internally and externally through your knowledge, approach, and professionalism. You will bring: Minimum 4+ years of full-time experience in digital marketing / ...

Senior Machine Learning Scientist

Location
Greater London, England, United Kingdom
offs for complex ML systems Model Development & Production Design and implement production-grade ML models (e.g., gradient-boosted trees, deep learning, optimization algorithms, bandits / RL policies) that operate reliably under real-world constraints in collaboration with engineering. Build robust training, evaluation, and serving pipelines with embedded observability, drift … detection, and failure handling across the ML lifecycle Enhance experimentation and measurement strategies , including A / B tests, causal inference methods, and long-horizon metrics to ensure models deliver durable impact as data and user behavior evolve Cross-Functional Collaboration & Influence Partner with engineering teams ...

Tech Lead Manager | UK & EU (hybrid + remote)

Location
United Kingdom
code and contribute hands‐on to our Ruby on Rails monolith, using practices such as automated testing, observability, A / B testing and feature flags. Collaborate across Engineering, Product, Design and Data to deliver and iterate on features that have a … speed, technical quality, scalability and longer‐term investment Comfortable delivering with agile methodologies and practices like automated testing, observability, A / B testing, and feature flags A collaborative approach — you work well with Product, Design, Analytics and Engineering partners ...

Senior Director of Machine Learning (Experiences)

Location
Greater London, England, United Kingdom
discovery and conversion at scale. Lead data science and experimentation. Own predictive modeling, causal inference, and the experimentation platform and standards — A / B testing, guardrail metrics, and rigorous measurement of incremental business impact — as a decision-science partner to Product … driven experiences as this work scales. Grow, develop, and retain the team . Shape ML and data-science career ladders and dual technical / management tracks; partner with Talent Acquisition to attract and hire top-tier ML and data-science talent; calibrate hiring and promotions; establish standards ...

Data Analyst (6 Month FTC)

Location
Greater London, England, United Kingdom
team in Central London. You’ll play a pivotal role in driving data-informed decision-making through advanced A / B testing, statistical analysis, and enterprise-level business intelligence solutions This is a client-facing position where … within the client’s team, requiring strong autonomy, initiative, and the ability to represent CI&T professionally Design, implement, and analyze A / B tests to measure product and feature performance Apply statistical methods to ensure test validity and generate actionable insights Present findings ...

Product Manager

Location
United Kingdom
alongside our engineers rather than only directing them. A strong understanding of UI and UX design is essential: using A / B testing, data analysis and strategic insight from our Head of Product, you'll be making judgement calls on layout … briefing: Use AI coding tools to build directly in the codebase alongside engineering, rather than only writing specs or handing over Figma files. UI / UX design: Set the standard for layout, flow and visual design on customer-facing pages, working with the design team to build on what ...