351 to 375 of 390 Permanent A/B Testing Jobs

Machine Learning Engineer

Location
Greater London, England, United Kingdom
Machine Leaning Engineer £735 per day – Inside IR35 London / 2 days a week on site 2 years Key Responsibilities Design, train, and optimise machine learning models focused on user personalisation, encompassing recommendation engines, ranking algorithms, user segmentation, and content analysis. Data Pipeline Engineering: Construct and maintain … supervise ML models in production environments, ensuring high availability, optimal performance, and continued relevance. Experimentation: Lead the design and analysis of A / B tests and offline experiments to evaluate model efficacy and support continuous improvement. Cross-Functional Collaboration: Engage with multidisciplinary teams to align ...

UX Researcher December 1, 2025 ₦600,000 - ₦900,000 Research User Testing Interviewing

Location
Greater London, England, United Kingdom
conduct qualitative research studies including user interviews, usability testing, and field studies Design and execute quantitative research using surveys, A / B tests, and analytics Synthesize research findings into actionable insights and compelling presentations Present findings to cross-functional teams and influence product … impact on product decisions Research stipends for recruiting participants and conducting studies Conference budgets for professional development and networking Flexible working hours and hybrid / remote options Collaborative team culture with designers, PMs, and engineers Fainzy Technologies is an AI and Robotics-powered technology firm, pioneering the development ...

Lead Decision Scientist, Revenue - Ads, Revenue

Hiring Organisation
Vinted
Location
Amsterdam, Noord-Holland, Netherlands
Employment Type
Permanent
Salary
EUR Annual
influence senior stakeholders. You'll join a mission-driven team building a world-class advertising ecosystem at scale. Arbeidsvoorwaarden / Benefits share options programme 25 days of paid annual leave MacBook devices EAP for you and family team-building events home office budget … pricing, placement, and monetization Develop tradeoff frameworks and guardrails balancing revenue, advertiser upside, and marketplace health Define evaluation standards beyond standard A / B tests, including incrementality, attribution, quasi-experiments, and sparse data scenarios Govern the Ads metric tree ensuring consistent, decision-useful definitions across ...

Piano Marketing Engineer: Personalisation & Experiments

Location
England, United Kingdom
Group is seeking a Product Specialist Engineer to enhance the Piano Marketing Suite. This role involves configuring experiences, designing A / B tests, and analyzing performance data to refine user interactions across a digital portfolio. The ideal candidate will have experience … with analytics platforms, strong communication abilities, and a proactive mindset for technical and performance improvements. The role supports a hybrid working model, allowing flexibility between in-office and remote work. #J-18808-Ljbffr ...

Lead Copywriter

Location
Greater London, England, United Kingdom
even know they could get back. The Role We're looking for an exceptional contract Copywriter to join our London Marketing team. As a company trusted by hundreds of thousands to draft their emails, we know how much language matters. So when our writing shows … life and drive acquisition, retention and engagement of high quality customers Optimise copy using insights from user behaviour, engagement data, and A / B tests. Conduct market, audience, and competitor research to inform messaging Bring fresh, diverse perspectives to a high-performing team ...

Marketing CRM Manager

Location
United Kingdom
Adaptavist Group is a global family of companies with a common goal. We combine the best of teamwork, technology, and processes, helping all kinds of businesses be better today and tomorrow. We are experts at delivering enterprise software, tailored solutions, and quality services across some … managing HubSpot workflows for standard nurture and lifecycle email sequences QA email campaigns, checking accuracy, personalisation, and compliance before send Support A / B test planning of our email marketing efforts Data Hygiene and Compliance Flag bounced, unsubscribed, or invalid contacts and apply suppression lists ...

Senior Front-End Engineer — Product-Driven, Hybrid/Remote

Location
Greater London, England, United Kingdom
Speechmatics is seeking a Senior Front-End Software Engineer to own end-to-end feature development for our user platform. You’ll drive … decisions, collaborate with designers and PMs, and ship features informed by real user analytics and feedback. You’ll design and run A / B tests, work with Mixpanel insights, and write robust UI tests to ensure quality at scale. A hybrid setup with ...

Contract Copywriter — AI-Driven Marketing & Growth

Location
Greater London, England, United Kingdom
launch copy, ensuring every line reflects our voice and drives engagement. You’ll collaborate with designers, optimise copy with data and A / B tests, and bring fresh perspectives to a fast-scaling AI startup. A passion for tech, startups ...

Senior Machine Learning Scientist

Hiring Organisation
Adyen
Location
Amsterdam, Noord-Holland, Netherlands
Employment Type
Permanent
Salary
EUR Annual
translate problems into ML tasks Analyze large, complex datasets to find patterns and opportunities for ML solutions Define KPIs, design experiments (A / B tests), and quantify business impact Contribute to regulatory reporting automation to keep Adyen compliant across markets Belangrijkste vereisten 5+ years … science Experience with full ML model lifecycle in production Proficiency with big data pipelines to feed models Solid software engineering practices and data engineering / MLOps understanding Strong background in statistics, ML for prediction, and causal inference; DL experience a plus Familiarity with (py)spark, (Trino ...

UX & Website Development Executive

Location
Woking, England, United Kingdom
Palmolive is an excellent opportunity if you seek a global experience, constant challenge, and development opportunities in an environment that respects work / life effectiveness. Job Title: UX & Website Development Executive Travel Required?: Travel - 25% of time Posting Start Date: 07 / 09 / … compromised. The role also requires supporting Local European ODG Marketing teams with prioritization and execution of regional marketing strategy for a 24 / 7 always on platform. The UX & Development Specialist is the day-to-day end‐responsible for the main Hill’s websites (Hills pet / ...

Machine Learning Engineer, Agents

Location
Greater London, England, United Kingdom
Labs is a seed-stage startup that started out of the UCL Machine Learning lab. We bootstrapped to 10 people, and now we're on the next leg of growth. AI can generate almost any form of media, but it still can't judge what captures human attention. … real runs, scorers and model judges, and regression alerts that show when the harness gets better or worse. Run experiments and A / B tests on prompts, models, tools and agent design, and approach the results with statistical rigour. Close the loop between audience response ...

Growth Lead Product Designer — Hybrid London, Equity

Location
Greater London, England, United Kingdom
Futureheads Recruitment Ltd is partnering with a growing consumer health technology business to hire a Lead Product Designer for its Growth team in London. This is a hands-on leadership role spanning acquisition and retention, combining design craft … with experimentation and commercial judgement. You’ll lead and mentor about three designers, own the design across the customer funnel, drive A / B tested improvements, and collaborate with product, engineering and growth to deliver at pace in a hybrid #J-18808-Ljbffr ...

Data Scientist - RealAdvisor

Location
United Kingdom
support 7,000+ real estate agencies and attract 10+ million users per year across Europe. We are scaling fast across multiple markets with a clear mission: help real estate professionals grow through data, transparency and smart technology. At RealAdvisor, we value ownership, autonomy and impact. Role Overview … transactional systems into reliable datasets. Perform product analytics to measure feature usage, user journeys, and retention drivers. Design and run experiments (A / B tests, cohort analysis, population and variation control) to validate hypotheses and measure causal impact. Build ML models for revenue optimization, churn ...

Hybrid ML Engineer: Personalisation, Pipelines & Production

Location
Greater London, England, United Kingdom
Investigo is seeking a Machine Learning Engineer for a London-based role focused on user … personalisation, including building and optimising models for recommendations and content analysis. You will design data pipelines, deploy models in production, run A / B tests, and collaborate with cross-functional teams to drive business outcomes. The position is Inside IR35 with 2 days per week ...

Optimisation Manager - 12 month FTC

Location
Welwyn Garden City, England, United Kingdom
About the roleOur experimentation programme goes beyond CRO. We are an experienced Experimentation Team running a mature programme of testing within a large scale Product Organisation. Our testing programme touches millions of customers and the resulting product enhancements deliver multi-million pound … full pay, followed by 13 weeks of Statutory Maternity Pay or Statutory Adoption Pay, we also offer 6 weeks fully paid paternity leave.Free 24 / 7 virtual GP service, Employee Assistance Programme (EAP) for you and your family, free access to a range of experts to support ...

Head of Product Analytics & Growth Experiments

Location
Greater London, England, United Kingdom
qlub is seeking a leader to own product analytics and scale its experimentation engine, enabling 50+ A / B tests monthly. You will define data models and governance, partner with Product, Ops, Tech and Data Engineering, and mentor a small analytics … team to drive rigorous, AI-ready analytics across a global fintech platform. You will shape the analytical stack, standardize test design, sample sizing, metrics and guardrails, and enable product decisions with reliable data and clear communication to #J-18808-Ljbffr ...

Email Account Manager

Location
United Kingdom
KPIs (open rate, click rate, bounce rate, revenue per recipient) Identify underperforming campaigns and implement data-driven improvements Propose and execute A / B tests, segmentation strategies, and new lifecycle flows Collaborate with designers and internal teams to ensure high-quality, on-time delivery Proven … hands-on experience with Klaviyo (campaigns, flows, segmentation, reporting) Experience managing multiple eCommerce / DTC accounts simultaneously (agency experience preferred) Strong background in email marketing for product-based brands Confident leading client-facing strategy calls and driving decisions Excellent written and verbal communication skills Strong project management and ability ...

Hybrid Data Insights Analyst: Dashboards & Growth

Location
Greater London, England, United Kingdom
PULL UP LTD is looking for a Data Analyst in Greater London. In this role … will turn data into actionable insights, collaborating with teams across the organization. Responsibilities include analyzing user behavior, building dashboards, and supporting A / B testing. The ideal candidate has over 2 years of experience in data analysis and a strong understanding ...

Senior Data Scientist — Experimentation & Growth

Location
United Kingdom
Tripadvisor Group is seeking a Senior Data Scientist to lead experimentation and measurement across product domains. … will partner with Product and Engineering to set up investigations, interpret results, and guide decisions. You will design experiments beyond traditional A / B tests, improving speed and rigour while ensuring results generalise across markets and time. A strong analytics mindset and mentorship ...

Conversion Optimization Strategist

Location
United Kingdom
seeking a CRO Specialist who turns data into actionable optimization strategies for websites and portals. You will bridge marketers and developers, providing precise input to start improvements and drive … measurable results. As part of a collaborative team of data specialists, UX designers, marketers and strategists, you will run A / B tests, analyze outcomes, and present insights as compelling narratives to inspire action and adoption. #J-18808-Ljbffr ...

Ecommerce Personalisation Conversion Optimisation Specialist

Location
Greater London, England, United Kingdom
Retail Human Resources plc partnered with a leading footwear and fashion retailer seeks an ecommerce … optimisation & personalisation specialist to enhance digital shopping journeys and maximise commercial performance across websites and apps. You will plan and evaluate A / B tests, analyse customer behaviour, optimise onsite merchandising and product recommendations, and improve site search and mobile / desktop journeys. #J ...

Senior Ad Monetisation Analyst, Gaming — Remote Ready

Location
Greater London, England, United Kingdom
a portfolio of mobile games within Lion Studios. You will build ad waterfalls, set up monetisation flows, run A / B tests, and push innovative revenue ideas. You will work closely with product and growth teams to maximise ad revenue, manage relationships with ...

AI Engineer

Hiring Organisation
Huxley Associates
Location
Utrecht, Netherlands
Employment Type
Permanent
Salary
EUR Annual
samen met data scientists, cloud engineers en stakeholders in een Agile omgeving, en blijft continu de nieuwste AI-ontwikkelingen toepassen op praktische vraagstukken. Arbeidsvoorwaarden / Benefits Direct vast dienstverband Marktconform salaris Opleidings- en certificeringsmogelijkheden Hybride werken vanuit huis, kantoor en klantlocatie Leaseauto of mobiliteitsregeling Goede pensioenregeling Verantwoordelijkheden Ontwerpen, bouwen … Ontwikkelen van robuuste AI-applicaties in Python Integreren van AI-oplossingen binnen cloudomgevingen zoals Azure, AWS of GCP Uitvoeren van experimenten, A / B-testen en modelvalidaties Samenwerken binnen Agile / Scrum-teams en adviseren van stakeholders Continu vernieuwen en experimenteren met de laatste ...

ASO & Growth Manager – Hybrid UK

Location
Greater London, England, United Kingdom
install growth for our app. This hybrid role blends analytics, experimentation and cross-functional collaboration to improve performance. You'll run A / B tests, target keywords, monitor rankings and reviews, and partner with Product, UX, SEO, Content and App Marketing to align priorities ...

Data Scientist, Audiobooks Analytics — Growth & Discovery

Location
Greater London, England, United Kingdom
Spotify is seeking a Data Scientist to join the Business Analytics team in London. You will use data analysis, experimentation, and modeling to shape the audiobooks strategy and enhance experiences … listeners, creators, publishers, and authors. You will collaborate with analysts, data scientists, product teams, and engineers to forecast opportunities, run A / B tests, and translate complex questions into practical recommendations for senior leaders. #J-18808-Ljbffr ...