351 to 375 of 424 A/B Testing Jobs in the UK

Principal Data Scientist

Hiring Organisation
Product Madness
Location
London, UK
Employment Type
Full-time
monetization, and operational outcomes. Lead the modeling framework for complex systems, guaranteeing comprehensive evaluation and monitoring of causal inference, uplift modeling, sequential decisioning, bandits / reinforcement learning, and forecasting. Partner with game teams to define success metrics, guardrails, and decision frameworks, translating analytical results into actionable product and operational … actions. Define and uphold engineering standards and guidelines for model development, including validation, uncertainty, reproducibility, and bias / quality checks. Drive scalable experimentation with A / B and Multi-armed bandit testing frameworks, power analysis, variance reduction, and online-offline alignment. Work ...

Data Scientist, Fintech Payments (ML/Analytics, Hybrid)

Location
Greater London, England, United Kingdom
merchants by crafting optimal payments strategy. Conduct deep-dive exploratory data analysis to uncover insights and anomalies Conduct experiments and A / B tests to improve performance, including ML based solutions. Develop cutting-edge automation tools aimed at monitoring and optimising merchants’ performance. Implement robust … Fintech or Consultancy, using analysis to make business recommendations A huge advantage if you have previous experience working as Payment Analyst / Expert Data driven approach, by clearly defining success metrics and measuring progress against them SQL / Python knowledge to extract & analyse large data from ...

Staff Data Scientist Location: London

Location
Greater London, England, United Kingdom
progress. At Preply, we’re all about creating life-changing learning experiences. We help people discover the magic of the perfect tutor, craft a personalised learning journey, and stay motivated to keep growing. Our approach is human-led, tech-enabled - and it’s creating real impact. … every day. Meet the team! At Preply, data is at the heart of every decision we make. We run hundreds of A / B tests to continually optimize our product, each with its own analytical and tracking challenges. The complexity of our subscription model, along ...

Software Engineer

Location
Sheffield, England, United Kingdom
testing efforts. Contribute to code reviews and provide constructive feedback. Deploy code to various environments and support releases. Suggest improvements to CI / CD pipelines and development workflows. Monitor and respond to system errors and logs. Document technical decisions and contribute to team knowledge sharing. Stay current … explain technical concepts clearly. Desirable Skills Experience with Docker and Kubernetes in development or production environments. Exposure to microservices architecture. Understanding of CI / CD pipelines and deployment strategies. Familiarity with feature toggling and A / B testing. Awareness of security best practices (e.g. ...

ASO Specialist

Location
Greater London, England, United Kingdom
NYSE-listed digital gaming company behind some of the world’s leading Sports and iGaming brands, including Betway and Jackpot City. We’re a powerhouse built on decades of expertise and we’re changing the game for good. Our mission is to give our customers a … improve conversion rates. Optimize metadata including titles, descriptions, keywords, and visual assets, to boost visibility, rankings, and user acquisition. Run A / B tests on store assets and analyze results to inform ongoing optimization. Drive mobile innovation by staying up to date with the latest ...

Senior Product Manager

Location
Greater London, England, United Kingdom
with smart, high-performing solutions Your Story 5+ years of demonstrated product management experience, ideally within fast-growing tech, fintech, or SaaS businesses BA / BS in a technical or analytical field You see the endgame but are focused on refining every detail A true … Expert at distilling complex challenges into simple, elegant products that delight users Data-driven mindset: you formulate hypotheses, design and run A / B tests, and make decisions grounded in evidence Clear, empathetic communicator who can engage and align both technical and business stakeholders Customer ...

Performance Marketing Manager

Location
Greater London, England, United Kingdom
clear CAC, CPL and pipeline targets. Turn traffic into pipeline. Build and optimise landing pages, forms and conversion paths, running continuous A / B tests that move visitors to MQLs, demos and closed revenue. Own measurement. Set up tracking and attribution across GA4, Tag Manager … marketing team. What We’re Looking For Analytical Foundations A strong analytical foundation built through experience in start-ups, investment banking, PE / VC, strategy, or management consulting - environments that demand rigorous thinking, structured problem-solving, and rapid synthesis of information. Action Bias You thrive in ambiguity ...

Senior Backend Engineer — Go + Blockchain, AI-Driven Remote

Location
Leeds, England, United Kingdom
partnering with product and other engineering teams to deliver robust, observable, and maintainable systems Design and implement experimentation capabilities (feature flags, A / B tests) to validate ideas quickly and safely Model and manage data for markets, orders, and transactions with a focus … blockchain data (e.g., event logs, indexing, reconciliation between on-chain and off-chain state) Experience with PostgreSQL - complex query optimization, indexing strategies, and schema / migration management Experience with event driven architecture like Kafka or PubSub Strong grasp of software design principles (e.g., SOLID, DRY) and testing ...

Harness Research 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. … models, tools or agent design is measured over repeat runs, not judged from a few examples. Run experiments and A / B tests on prompts, models, tools and agent design, approach the results with statistical rigour, and ship what wins to production. Close ...

Marketing Campaign Manager | UK | Hybrid

Location
Greater London, England, United Kingdom
experienced Field Marketer / Regional Campaign Manager for B2B Digital Transformation organizations? This is a great opportunity to drive growth in key regions for Sutherland! Open to candidates based in the London, UK area but open to anywhere in Europe! Sutherland is seeking a Manager … / Senior Manager, Marketing Campaigns to develop and execute integrated marketing campaigns that drive qualified pipeline and ROI across the priority European regions . This role is both strategic and execution-focused, requiring the skillset to build the long-term vision for multi‐touch customer journeys along with ...

Lead Product Manager, Risk Decisioning

Location
United Kingdom
changing the world's relationship with money in the process For everyone, whatever their background or balance. The proof: profitable, fast-growing, a unicorn with over $300M in ARR, and millions of people who now feel differently about their money. We love original thinkers who challenge the status … limited data, unproven models & pending approvals, and making the trade‐offs between pricing, limits and credit risk Strong data fluency‐runs A / B tests, writes SQL and translates data into compelling stories Deep understanding of US consumer finance regulation (e.g. Reg Z, Reg B ...

Staff Software Engineer

Location
Greater London, England, United Kingdom
deep expertise in .NET, Java, TypeScript and React, and a proven record delivering large-scale, production-grade systems using A / B testing. Experience designing and operating large-scale distributed systems on AWS (or similar), including secure development, data protection, compliance, and enterprise … architecture. Strong modern frontend expertise: component architecture, design systems, responsive design, accessibility (WCAG), and client-side state management. Hands-on experience with enterprise / SaaS web platforms using microservices and micro-frontends, covering performance (Core Web Vitals, rendering, code splitting, CDN), API integration (REST, OpenAI, Bedrock), and service scalability ...

Data Scientist - Principal

Location
Greater London, England, United Kingdom
monetization, and operational outcomes.* Lead the modeling framework for complex systems, guaranteeing comprehensive evaluation and monitoring of causal inference, uplift modeling, sequential decisioning, bandits / reinforcement learning, and forecasting.* Partner with game teams to define success metrics, guardrails, and decision frameworks, translating analytical results into actionable product and operational … actions.* Define and uphold engineering standards and guidelines for model development, including validation, uncertainty, reproducibility, and bias / quality checks.* Drive scalable experimentation with A / B and Multi-armed bandit testing frameworks, power analysis, variance reduction, and online-offline alignment.* Work ...

Digital Product Manager

Location
Greater London, England, United Kingdom
collaboration with cross-functional team members and stakeholders, ensuring it aligns with both user needs and business objectives.AI product developmentIdentify, validate and deliver AI / LLM-powered website experiences that improve customer journeys.Generative Engine Optimisation (GEO)Drive on-site optimisations and content creation to improve how our website … developed responsibly, considering privacy, security, accessibility, bias, explainability, accuracy and appropriate human oversight.LLM qualityUnderstand the specific challenges of LLM-based products, including hallucination, prompt / model evaluation and ongoing performance monitoring.AI horizon scanningStay close to developments in AI and translate emerging capabilities into practical opportunities for the website ...

Senior UX/UI Designer: Data-Driven, Accessible Interfaces

Location
Manchester, England, United Kingdom
Primo Interactive Limited in London is seeking a senior UX / UI designer to craft marketing sites, e-commerce flows, client portals and internal software from concept to handover. You will run usability tests and build a robust component library in Figma, ensuring accessibility … a core design principle. You will also write interface copy and collaborate with analysts on A / B tests to design effective variants, delivering production-ready designs with clear developer handoff. #J-18808-Ljbffr ...

Senior UX/UI Designer: Data-Driven, Accessible Interfaces

Location
Wrexham, Wales, United Kingdom
Primo Interactive Limited in London is seeking a senior UX / UI designer to craft marketing sites, e-commerce flows, client portals and internal software from concept to handover. You will run usability tests and build a robust component library in Figma, ensuring accessibility … a core design principle. You will also write interface copy and collaborate with analysts on A / B tests to design effective variants, delivering production-ready designs with clear developer handoff. #J-18808-Ljbffr ...

Senior UX/UI Designer: Data-Driven, Accessible Interfaces

Location
Greater London, England, United Kingdom
Primo Interactive Limited in London is seeking a senior UX / UI designer to craft marketing sites, e-commerce flows, client portals and internal software from concept to handover. You will run usability tests and build a robust component library in Figma, ensuring accessibility … a core design principle. You will also write interface copy and collaborate with analysts on A / B tests to design effective variants, delivering production-ready designs with clear developer handoff. #J-18808-Ljbffr ...

Digital Analyst

Location
Manchester, England, United Kingdom
Every service we sell ends in a number: leads, sales, cost per acquisition. The analyst is the person who makes sure that number is real. Tracking that double counts, consent that blocks the tag, a form that fires on load: you find these before the client … Build reports in Looker Studio that a business owner can read without a translator. Design and analyse A / B tests and landing page experiments with the designers. Pull Search Console, ads and CRM data together to answer a ...

Digital Analyst

Location
Wrexham, Wales, United Kingdom
Every service we sell ends in a number: leads, sales, cost per acquisition. The analyst is the person who makes sure that number is real. Tracking that double counts, consent that blocks the tag, a form that fires on load: you find these before the client … Build reports in Looker Studio that a business owner can read without a translator. Design and analyse A / B tests and landing page experiments with the designers. Pull Search Console, ads and CRM data together to answer a ...

Digital Analyst

Location
Greater London, England, United Kingdom
Every service we sell ends in a number: leads, sales, cost per acquisition. The analyst is the person who makes sure that number is real. Tracking that double counts, consent that blocks the tag, a form that fires on load: you find these before the client … Build reports in Looker Studio that a business owner can read without a translator. Design and analyse A / B tests and landing page experiments with the designers. Pull Search Console, ads and CRM data together to answer a ...

Product Manager (Onboarding/KYC)

Location
Greater London, England, United Kingdom
Product Manager (Onboarding / KYC) Department: Product Employment Type: Full Time Location: London Description We are looking for a growth-minded Product Manager (mid to senior level) to own and optimize our end-to-end Onboarding experience. In this role, you will lead the critical user journey … strategy, roadmap, and execution for the complete Registration > KYC > First Deposit flow. Optimize Conversion & Reduce Friction: Run funnel analysis and A / B tests to identify drop-off points, streamline user journeys, and maximize user conversion rates. Balance UX with Compliance: Partner closely with Compliance ...

Digital Product Manager

Location
Staines-upon-Thames, England, United Kingdom
cross-functional team members and stakeholders, ensuring it aligns with both user needs and business objectives. AI product development Identify, validate and deliver AI / LLM-powered website experiences that improve customer journeys. Generative Engine Optimisation (GEO) Drive on-site optimisations and content creation to improve how our website … considering privacy, security, accessibility, bias, explainability, accuracy and appropriate human oversight. LLM quality Understand the specific challenges of LLM-based products, including hallucination, prompt / model evaluation and ongoing performance monitoring. AI horizon scanning Stay close to developments in AI and translate emerging capabilities into practical opportunities ...

Senior Data Analyst

Location
Greater London, England, United Kingdom
Company Overview Team Creation Limited is a fast-growing software development company operating across Asia and Europe. We provide services including market research, artificial intelligence solutions, cloud computing, and mobile application development for a broad range of international clients. Our focus is on delivering innovative … growth and development of our professional workforce. Key Responsibilities Product analytics — Define metrics for new and existing features. Design and analyse A / B tests end-to-end: hypothesis, sample sizing, statistical readout, and decision recommendation. Diagnose user behaviour, identify drop-off points, and surface ...

UX/UI Designer

Location
Manchester, England, United Kingdom
A design here is finished when the numbers say so. Our clients pay for enquiries, sales and bookings, and the pages you design are measured on them. That makes the work more interesting, not less: you get to see what people actually did, and change it. You will … Figma, from wireframe to production-ready. Run usability tests and turn what you saw into changes. Work with the analyst on A / B tests, and design the variants. Keep accessibility in the design, not bolted on after: contrast, focus, structure, forms. Hand over ...

UX/UI Designer

Location
Wrexham, Wales, United Kingdom
A design here is finished when the numbers say so. Our clients pay for enquiries, sales and bookings, and the pages you design are measured on them. That makes the work more interesting, not less: you get to see what people actually did, and change it. You will … Figma, from wireframe to production-ready. Run usability tests and turn what you saw into changes. Work with the analyst on A / B tests, and design the variants. Keep accessibility in the design, not bolted on after: contrast, focus, structure, forms. Hand over ...