19 of 19 A/B Testing Jobs in the City of London

advertising performance is measured and optimised across one of the world's largest consumer platforms. You'll analyse massive datasets, design A / B experiments, and work closely with product and engineering teams to turn insights into real product improvements. The Offer: Annual Salary … have the appropriate work permit, no sponsorship) What you'll work on Measuring and improving ad performance Designing and analysing A / B experiments Identifying insights from large-scale datasets Influencing product and advertiser targeting strategies What we need Strong SQL and data analysis skills ...

alongside experienced engineers and product specialists, helping to shape the future of media technology. Key Responsibilities Develop and maintain scalable, high-quality JavaScript (ReactJS / TypeScript) code Collaborate closely with engineering and product teams to deliver new features and tools Contribute to backend services using Node.js Work with systems … Strong commercial experience with ReactJS Solid understanding of Node.js Experience with Rest API's and GraphQL Familiarity with testing - A / B Testing / Web Testing / Web Performance Proficient with Playwright / Cypress / ...

Architecture & Solution Design Define reference architectures for GenAI systems: RAG, agentic orchestration, tool / function calling, multi-step reasoning workflows, memory patterns, and context strategies. Design multi-tenant and enterprise-scale GenAI platforms with clear separation of concerns: UI, orchestration, retrieval, inference, evaluation, and observability. Select model strategies: hosted … LLMs, open-weight models, fine-tuning vs. prompt / RAG, latency and cost tradeoffs, and deployment patterns. 2) Agentic AI Orchestration & Tooling Architect agent systems (single / multi-agent) including: Task decomposition, planners / executors, reflection / verification loops Tool use patterns (APIs, databases, search, workflow ...

Centre of Excellence for experimentation • Translate business objectives into structured testing roadmaps • Prioritise, plan, design and deliver A / B tests across multiple digital platforms • Run hands-on experiment builds, primarily using Optimizely • Analyse results and communicate insights to stakeholders across the business … strong fit if you have • Commercial experience running and managing experimentation programmes • Hands-on experience setting up and analysing A / B tests • Knowledge of experimentation tools such as Optimizely or similar platforms • A solid understanding of metrics, experimentation principles and test design ...

into commercial impact. Responsibilities include Owning customer analytics projects such as segmentation, churn modelling, LTV, and lifecycle optimisation Designing and analysing A / B and multivariate tests to shape acquisition and retention strategies Using SQL and dashboarding tools such as Tableau or Looker to communicate … data-led B2C environments Ability to translate analytical outputs into strategic recommendations and tell clear data stories Experience designing or analysing A / B testing and customer lifecycle analytics Python skills for statistical modelling or automation are an advantage This role offers a ...

Oversee all ecommerce optimisation and personalisation initiatives across websites and apps. Work with the ecommerce trading team to gather A / B testing requirements and implement campaigns that balance customer experience with commercial impact. Manage content updates to ensure a clear … . What we’re looking for: Passion for ecommerce and online retail. Strong analytical mindset with experience in optimisation, personalisation, and A / B testing. Hands-on experience with HTML, CSS, and ecommerce platforms / tools. Be at the heart of driving innovation ...

identify market opportunities, user needs, and areas for improvement. Translate insights into actionable product enhancements. Experimentation: Design, implement, and analyze A / B tests and other experimentation methods to validate hypotheses and optimize product features. Cross-Functional Collaboration: Work closely with engineering, design, marketing … Required Skills Strong analytical skills with a data-driven approach to decision-making. Proven experience in designing and executing A / B tests and other product experiments. Excellent communication skills (both written and verbal) with a track record of effectively collaborating ...

Responsibilities • Build and operate production-grade AI agents on GCP using Google ADK • Integrate AI systems with policy, claims and CRM platforms via REST / JSON APIs • Design scalable RAG pipelines (ingestion, chunking, vector search) • Implement evaluation, monitoring, A / B testing and cost / latency dashboards • Embed security, GDPR compliance, RBAC / IAM and auditability • Partner with product and claims teams to deliver measurable business impact Key Details • Salary: £100,000–£130,000 (Principal level, dependent on experience) • Working model: Hybrid – 1–2 days per week ...

PaymentGenes is proud to be partnering with a high-growth, international technology organisation to appoint a Senior / Lead Data Scientist (AI-Native, AWS ML Stack, Production-Focused) . This is a strategic hire within a business scaling real-world … endpoints, pipelines) Leverage Bedrock for foundation model access Implement serverless inference with Lambda & API Gateway Utilise S3, Glue, Athena for data processing Implement CI / CD for ML workflows Monitor performance via CloudWatch and drift detection tooling Optimise inference cost and latency 🔁 Productionisation & MLOps Build reproducible ML pipelines Implement ...

Figma designs Write high-quality, secure, tested and performant code Own and improve automated testing strategies (unit, integration, e2e) Contribute to CI / CD and deployment processes Lead architectural planning and trade-off discussions Provide coaching and mentoring to peers Proactively support and maintain existing applications Experience … experience with Jest and Playwright Understanding of RESTful APIs and microservices principles Comfortable working in an Agile, DevOps environment Proficient with Git and CI / CD pipelines (GitLab preferred) Solid knowledge of HTML, CSS (Tailwind / SCSS) and web accessibility Desirable: Experience with MarTech tools (A ...

PaymentGenes is proud to be partnering with a high-growth, international technology organisation to appoint a Senior / Lead UX & Web Designer . This is a strategic design leadership role within a business investing heavily in AI-driven digital experiences. … Collaboration Work closely with Product, Engineering, Data, and Marketing Bridge design intent with front-end implementation realities Contribute to experimentation frameworks (A / B testing, optimisation) Translate research and analytics insights into design improvements 🧱 Design Systems & Scalability Lead the evolution of web design ...

pipelines (ingestion, chunking, vector search) • Integrate ML systems with policy, claims and CRM platforms via REST APIs • Implement evaluation frameworks, monitoring, A / B testing and cost / latency dashboards • Embed security, GDPR compliance, RBAC / IAM and auditability into … base • Working model: Hybrid – 1–2 days per week in South West London • Tech stack: Python, GCP (Vertex AI, BigQuery, Cloud Run / Functions), LLMs, embeddings, vector databases, Docker, Kubernetes, CI / CD • Visa sponsorship: Not available Interested? Please apply below. ...

Location: London (Hybrid: 3 days in office) Salary: £100,000 – £125,000 + 10% discretionary bonus + equity scheme We’re partnering with a highly respected, data driven organisation in the alternative assets space undergoing a major AI led transformation, including the launch of new generative … deploy machine learning models (prediction, classification) Own delivery of data science solutions from problem definition to production Lead experimentation and A / B testing to drive continuous improvement Collaborate cross functionally with product, engineering, and commercial teams Mentor and elevate a ...

strategy? Have you delivered machine learning solutions that moved real business metrics? Are you ready to be the first dedicated Data Scientist in a growing analytics function? A London-based strategic sourcing and supply chain business, backed by two global Fortune 10 corporations, is building … pricing, risk and demand forecasting • Lead time series and regression modelling to anticipate market shifts • Design and implement experimentation frameworks (A / B testing, causal inference) • Productionise models within cloud environments alongside engineering teams • Translate complex analysis into clear commercial recommendations • Help shape ...

This hybrid role is split between Ad Operations and Audience Strategy. You will be responsible for the technical health of our advertising stack (GAM / SSPs) while simultaneously acting as the primary consultant for our sales team on audience data. The ideal candidate understands how to pull the technical … maximize RPM and reduce wasted inventory. Troubleshooting: Act as the lead for technical discrepancies, creative QA, and debugging delivery issues. Reporting: Generate daily / weekly performance reports for internal stakeholders, focusing on fill rates and technical health. Operational leg of programmatic curation, PD and PG campaigns. Follow ...

Founding Product Lead 💸 £100,000-£115,000 + Bonus 📍 London / Hybrid We're partnered with an incubated, well-funded start up within the field of audio technology as they build out their Founding Team. They're blending music, AI and technology to enhance mental and physical wellbeing. … execute Strong discovery and experimentation capability Technical fluency and confidence partnering with senior engineers Data-first thinking - comfortable running and interpreting A / B tests Comfortable wearing multiple hats in a lean team Why this role stands out: True founding-level ownership ...

Lead Data Product Analyst London (Hybrid) No sponsorship £90,000 – £110,000 + Bonus We’re hiring a Lead Data Product Analyst to join a high-growth, data-driven business where analytics sits at the core of product and commercial decision-making. This is a … drive measurable impact. What you’ll be doing Leading product analytics across key customer journeys and digital products Owning experimentation strategy, including A B testing and hypothesis design Partnering with product and engineering to influence roadmap and prioritisation Defining KPIs and building scalable reporting ...

Digital Analyst London - hybrid - 3 days a week Up to £60,000 This is an exciting opportunity to join a business that is investing heavily in digital performance, data quality, and meaningful insights. You will play a key role in building reliable reporting, unlocking … journeys Desirable: • App analytics experience (attribution, onboarding, retention, AppsFlyer etc.) • Working knowledge of cloud‐based data environments • Experience with CRO or A / B test analysis • Understanding of tagging concepts What They Offer • Salary up to £60,000 • Hybrid working, 3 days in the office ...

Manager - CMS & Website Design (Support UX Design & Development ) Location: Royal Tunbridge Wells / London Job Type: Permanent Work Setup: Hybrid - 1 day in the office Who We Are We are a consultancy operating within Robert Walters, the world's most trusted talent solutions business. Across the globe … a focus on the overall user journey across highly regulated environments. The Person: You bring 8+ years of experience in UX / UI roles, with a proven track record of designing customer-facing platforms within highly regulated sectors. You have a strong impact ...