Website testing jobs in LondonCreate job alerts

Expedia Group brands power global travel for everyone, everywhere. We design cutting-edge tech to make travel smoother and more memorable, and we create groundbreaking solutions for our partners. Our diverse, vibrant, and welcoming community is essential in driving our success. Why Join Us? To shape the future of travel, people must come first. Guided by our Values and Leadership Agreements, we foster an open culture where everyone belongs, differences are celebrated and know that when one of us wins, we all win. We provide a full benefits package, including exciting travel perks, generous time-off, parental leave, a flexible work model (with some pretty cool offices), and career development resources, all to fuel our employees' passion for travel and ensure a rewarding career journey. We’re building a more open world. Join us. Machine Learning Scientist III - Experimentation Science (Statistical Methodologies) Introduction to team: As a Machine Learning 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 and practical application, requiring you to design, evaluate, and improve hypothesis testing frameworks and experimentation techniques. You will collaborate closely with platform engineers to implement scalable solutions, provide expert guidance to stakeholders, and drive innovation through cutting-edge statistical research. This position offers a unique opportunity to apply deep statistical expertise in a dynamic environment where your contributions directly influence product decisions and customer experiences 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 frameworks and tools that enhance the platform’s capabilities and reporting accuracy * Provide expert guidance and training to cross-functional teams on experimental design, hypothesis testing, and statistical best practices to optimize test duration, sample size, and overall experiment quality * Conduct original research to explore and develop innovative approaches for experimentation challenges, including designing proof-of-concept studies and integrating new methodologies into production workflows * Analyze complex experimental data, build simulation frameworks to quantify error rates, and communicate findings clearly to both technical and non-technical stakeholders to inform business decisions What we're looking for: * Deep expertise in statistical methodologies, particularly hypothesis testing, design of experiments, and interpretation of p-values and confidence intervals, with the ability to apply these concepts rigorously in an experimentation context * Strong analytical mindset with the capability to structure complex business problems and translate them into statistically sound experimental designs and solutions * Proficiency in programming with experience in Python, PySpark, R, or similar languages, sufficient to implement and test statistical models and simulations, with an emphasis on correctness over advanced coding skills * Demonstrated ability to conduct independent research, quickly learn new statistical techniques, and develop proof-of-concept models that can be scaled and integrated into production experimentation platforms * Excellent communication skills to clearly explain complex statistical concepts and experimental results to both technical and non-technical stakeholders, ensuring alignment and understanding across teams Minimum qualifications: * A bachelor’s degree or higher in Mathematics, Statistics, or a closely related quantitative field, providing a strong foundation in statistical theory and experimental design * Proven expertise in hypothesis testing, design of experiments, and statistical methodologies critical to experimentation science * Solid programming skills in at least one language such as Python, R, or PySpark, with the ability to write clean, maintainable code to support research and implementation * Experience applying statistical rigor to real-world business problems, with the ability to independently lead and deploy methodologies at scale * Strong analytical mindset with the capacity to research, evaluate, and implement new statistical approaches and simulation frameworks * Excellent communication skills to clearly explain complex statistical concepts and results to both technical and non-technical stakeholders * 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 Group is proud to offer a wide range of benefits to support employees and their families, including medical/dental/vision, paid time off, and an Employee Assistance Program. To fuel each employee’s passion for travel, we offer a wellness & travel reimbursement, travel discounts, and an International Airlines Travel Agent (IATAN) membership. ___. Accommodation requests If you need assistance with any part of the application or recruiting process due to a disability, or other physical or mental health conditions, please reach out to our Recruiting Accommodations Team through the ___. We are proud to be named as a Best Place to Work on Glassdoor in 2024 and be recognized for award-winning culture by organizations like Forbes, TIME, Disability:IN, and others. Expedia Group's family of brands includes: Brand Expedia®, Hotels.com®, Expedia® Partner Solutions, Vrbo®, trivago®, Orbitz®, Travelocity®, Hotwire®, Wotif®, ebookers®, CheapTickets®, Expedia Group™ Media Solutions, Expedia Local Expert®, CarRentals.com™, and Expedia Cruises™. © 2024 Expedia, Inc. All rights reserved. Trademarks and logos are the property of their respective owners. CST: 2029030-50 Employment opportunities and job offers at Expedia Group will always come from Expedia Group’s Talent Acquisition and hiring teams. Never provide sensitive, personal information to someone unless you’re confident who the recipient is. Expedia Group does not extend job offers via email or any other messaging tools to 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 ___. 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, gender, sexual orientation, national origin, disability or age.

Analytics Engineer – dbt & SQL Location: City of London – Hybrid (3 days/week during probation, then 2 days/week) Salary: £35,000 – £40,000 (dependent on experience) Ref: J13009 *Please note sponsorship is not available now or in the future. An exciting opportunity has opened up at one of the UK’s fastest-growing independent media agencies. An Analytics Engineer is needed to help shape the future of data in a business where performance, innovation, and impact come together. You’ll sit at the heart of the Marketing Intelligence team, transforming complex data into clean, trusted, and highly usable products that inform real-time marketing strategies for some of the UK’s most recognisable brands. This is a role for someone who doesn’t just write SQL, but builds scalable, structured models that empower analysts, marketers, and data scientists to move faster and smarter, all while contributing to a “Data for Good” ethos that drives meaningful, measurable outcomes. • Build and maintain robust data models in DBT, transforming raw data into high-quality, trusted sources for analytics and activation., • Manage onboarding of new data feeds from discovery to documentation, collaborating with both technical and business stakeholders., • Champion data quality, creating tests and alerts to ensure confidence and consistency in our outputs., • Work closely with senior leaders across data and marketing to align models with business objectives., • Contribute to and evolve our Python tooling, adapting scripts and automations to support the wider data platform., • Collaborate with teams across analytics, data science, and visualisation to make sure data is accessible, meaningful, and impactful., • Take ownership of projects from design through to deployment, following agile best practices. You’re a curious, proactive problem-solver who’s passionate about clean, well-documented data. You care about data quality, team collaboration, and making a measurable difference in how data is used across a business. Must-Have Skills: • SQL - Confident in writing clean, performant queries; understands ANSI SQL principles., • dbt - Experienced with building, testing, and documenting models in production environments., • Python - Comfortable using and editing existing scripts; familiar with core concepts., • Git - Solid understanding of version control and team-based workflows., • Strong communicator - Able to translate technical topics for non-technical audiences., • Team player - Collaborative, curious, and happy to work in a self-organising, fast-paced environment. Nice-to-Have Skills: • Experience with GCP/BigQuery or other cloud data warehouses (e.g., Snowflake, Redshift)., • Familiarity with data orchestration tools (e.g., Airflow)., • Experience with data visualisation platforms (such as Preset.io/Apache Superset or other)., • Exposure to CI/CD pipelines, ideally using GitLab CI., • Background working with media, marketing, or advertising data. The Opportunity: • Work alongside smart, supportive teammates who genuinely care about data, performance, and growth., • Play a key role in a business that’s investing in its data capabilities for the long term., • Huge emphasis on training and development, • Contribute to an evolving data platform and a top 1% dbt codebase that sets standards others aspire to., • Be part of a company with a strong “Data for Good” ethos, where your work helps drive real-world results with purpose. If you're ready to develop up your analytics career, working with top-tier tools and a brilliant team, we want to hear from you. Alternatively, you can refer a friend or colleague by taking part in our fantastic referral schemes! If you have a friend or colleague who would be interested in this role, please refer them to us. For each relevant candidate that you introduce to us (there is no limit) and we place, you will be entitled to our general gift/voucher scheme. Datatech is one of the UK’s leading recruitment agencies in the field of analytics and host of the critically acclaimed event, Women in Data. For more information, visit our website: ___ Datatech is one of the UK’s leading recruitment agencies in the field of analytics and host of the critically acclaimed event, Women in Data. For more information, visit our website:

C++ Developer - Permanent - Hybrid - Central London • Opportunity: Permanent position, • Salary: Up to £125,000 per annum (DOE), • Hybrid: 3 days per week onsite (Non-negotiable), • Office Location: Central London A global trading organisation is looking for a Senior C++ Developer to join their team and be responsible for the design, development, and support of systems and services for their next trading platform. Key Responsibilities • Collaborate with business analysts and architects to review and understand complex business and technical requirements., • Create high quality documentation including detailed technical, functional and unit test specifications., • Design, develop, debug, implement, test and maintain software solutions, applications and services., • Perform thorough unit testing of developed software., • Contribute to effective and efficient 3rd line application support for production systems including the provision of permanent remediation., • A minimum of 3 years commercial experience in systems analysis, design, and development., • Comprehensive knowledge of designing and building Server Side C++ applications, ideally on RedHat 7 or later., • Proven experience of developing large scale mission critical, low latency or fault tolerant systems., • Experience of software development methodologies and working in a structured environment., • Knowledge of financial services, derivatives or trading in an exchange, sell-side or Front Office environment would be highly beneficial., • Experience of developing low-level, high performance systems. To be considered, please ensure you complete your application on the Computappoint website. Services offered by Computappoint Limited are those of an Employment Business and/or Employment Agency in relation to this vacancy.

UKG Systems Analyst - Fixed Term Contract London I'm excited to be supporting a leading organisation with the recruitment of a UKG Dimensions Systems Analyst on a fixed-term basis. This is a fantastic opportunity to become the subject matter expert, taking ownership of system optimisation and driving improvements across the business. If you're looking for a role where your expertise with UKG Dimensions can make a real impact, this is it. You'll be the go-to specialist, leading on configuration, testing, and continuous improvement - ensuring the platform delivers the best possible results for both the workforce and the business. Responsibilities * Leading on the configuration, implementation, and optimisation of UKG Dimensions. * Partnering with HR, IT, and Operations to translate business requirements into system solutions. * Driving system enhancements, ensuring Dimensions is aligned to strategic and operational needs. * Providing expertise in Scheduling and Forecasting modules to optimise workforce planning. * Ensuring data accuracy, governance, and system integrity are maintained. * Designing and delivering reports, dashboards, and analytics for leadership teams. * Supporting user training, troubleshooting issues, and ensuring colleagues get the best from the system. * Identifying opportunities for automation and smarter workforce management within Dimensions. Required Experience * Proven experience as a UKG Dimensions Workforce Systems Analyst. * Strong skills in configuration, implementation, and testing within Dimensions. * Knowledge of Scheduling and Forecasting modules is highly advantageous. * Experience in requirements gathering, documentation, and system support. * Strong analytical mindset with the ability to design reports and actionable insights. * Excellent stakeholder management and communication skills. Modis International Ltd acts as an employment agency for permanent recruitment and an employment business for the supply of temporary workers in the UK. Modis Europe Ltd provide a variety of international solutions that connect clients to the best talent in the world. For all positions based in Switzerland, Modis Europe Ltd works with its licensed Swiss partner Accurity GmbH to ensure that candidate applications are handled in accordance with Swiss law. Both Modis International Ltd and Modis Europe Ltd are Equal Opportunities Employers. By applying for this role your details will be submitted to Modis International Ltd and/or Modis Europe Ltd. Our Candidate Privacy Information Statement which explains how we will use your information is available on the Modis website.

Permanent Java Full Stack Developer - Data Warehouse - Hedge Fund - Angular, Kafka, RDBMS, Rest API Our client is looking for a skilled Full Stack Developer to enhance our Enterprise Reference Data platform, the central source of financial data across the firm. You will play a key role in evolving our data platform, services, and tools to meet new customer requirements. The platform is built on a modern tech stack, including Angular, Java, Kafka, and AWS (EKS), offering scalable and streaming capabilities. Key Responsibilities • Develop and maintain full-stack solution using Java (Spring Framework, GraphQL, Rest API, Kafka) and Angular., • Ensure proper ingestion, curation, storage, and management of data to meet business needs., • Write and execute unit, performance, and integration tests., • Collaborate with cross-functional teams to solve complex data challenges., • Minimum of 5-7 years' of professional Java development experience, focusing on API-and Kafka based architectures., • Minimum 4-5 years of strong Angular development skills with Back End integration expertise., • Hands-on experience with automated testing (unit, performance, integration)., • 5+ years of database development experience (any RDBMS), • Analytical and problem-solving skills with the ability to work independently in a fast-paced environment., • Excellent communication skills to effectively collaborate with users and other teams across different regions., • Self-motivated and capable of working under pressure. By applying to this job you are sending us your CV, which may contain personal information. Please refer to our Privacy Notice to understand how we process this information. In short, in order to supply you with work finding services, we will hold and process your personal data, and only with your express permission we will share this personal data with a client (or a third party working on behalf of the client) by email or by upload to the Client/third parties vendor management system. By giving us permission to send your CV to a client, this constitutes permission to share the personal data that would be necessary to consider your application, interview you (Phone/video/face to face) and if successful hire you. Scope AT acts as an employment agency for Permanent Recruitment and an employment business for the supply of temporary workers. By applying for this job you accept the Terms and Conditions, Data Protection Policy, Privacy Notice and Disclaimers which can be found at our website.

🔍Senior Ecommerce CRO Lead 🛒High Growth DTC Brand 📍London (2 days office based) 💸£60,000 - £80,000 We are working with a leading, high-growth D2C scale up that is at a pivotal point in it's journey. With a strong UK and US footprint and ambitious revenue targets, they are now in need of a dedicated Senior Ecommerce CRO Lead to unlock conversion. This is a unique opportunity to own the entire customer journey on their Shopify+ website - from shaping strategy to executing tests, you'll be instrumental in turning traffic into measurable growth. You will have a direct line to the founder as well as the CMO. This is not just a CRO role. We’re looking for someone who can connect the dots between product, storytelling and design—someone who balances a strategic mindset with attention to detail, from microcopy and layout to the brand narrative that builds trust and drives loyalty. About the Role • Define and lead the CRO strategy, prioritisation model, and testing roadmap, • Audit and optimise key entry points to remove friction and boost conversion, • Run a continuous A/B and multivariate testing programme with speed and precision, • Enhance merchandising UX, bundling, cross-sell and upsell flows, • Work closely with senior leaders to bring brand storytelling to life through digital journeys About You • Proven track record of owning CRO for a high-growth D2C ecommerce brand, • Shopify expert, • Experience running and implementing experiments end-to-end, • Strong understanding of GA4, GTM, heatmaps and experimentation platforms, • Ability to adjust Shopify themes directly or brief developers effectively, • A data-driven mindset combined with commercial and UX awareness, • Thrives in a fast-paced, scale up DTC environment Apply now or send your CV directly to 📩 We are committed to promoting equality of opportunity for all employees and job applicants. In line with the Equality Act 2010, we strive to create and maintain a working environment in which everyone is able to make the best use of their skills, free from discrimination or harassment, and in which all decisions are based on merit. Due to a high number of applicants, we are only able to respond to successful candidates.

Our web analytics team is a rapidly expanding part of our business.We partner closely with both Google, Adobe, Optimizely and VWO within the website testing and personalisation field.You will play a key role in driving the strategy that underpins our clients’ optimisation programmes and will combi