Quantum
Quantum is a performance-driven affiliate marketing and digital comparison company that connects global brands with high-intent consumers. Headquartered in London, it builds data-driven comparison services and campaigns designed to be measurable, optimised in real time and scalable. The company combines in-house technology, full-stack analytics and a compliance-first approach to operate in regulated and high-growth sectors. Quantum aims to help users make faster, smarter buying decisions while driving growth for its partners.
Head of Data Engineering
Quantum is seeking a Head of Data Engineering to lead its data team in London. The role involves defining the technical strategy, managing the delivery roadmap, and building scalable data infrastructure to support business growth and AI-led development.
Senior Full Stack Engineer
Quantum is seeking a Senior Full Stack Engineer to lead the development and architecture of its web platforms. The role focuses on building scalable, high-quality applications while mentoring team members and collaborating across the product lifecycle in a hybrid London-based environment.
Graduate Paid Media Analyst
Quantum is seeking a Graduate Paid Media Analyst to manage and optimise performance marketing campaigns across various digital channels. The role involves data-driven analysis and cross-functional collaboration to drive user engagement and support business growth.
Senior AI Engineer
Quantum is seeking a Senior AI Engineer to design and deploy scalable multi-agent systems for personalised advertising and real-time bidding. The role focuses on building agentic workflows and AI solutions within a Google Cloud environment to drive measurable business outcomes.
Head of Business Development
Quantum is seeking a Head of Business Development to lead new business efforts for its Rewards brands in London. The role focuses on building a high-performing business development function, managing pipelines, and negotiating commercial partnerships to drive group-wide revenue growth.
Senior Creative Strategist
Quantum is seeking a Senior Creative Strategist to lead the creative testing engine for paid social growth in London. The role involves managing the end-to-end production of high-volume, trend-driven ad concepts across Meta, TikTok, and Snap. The ideal candidate will be a hands-on strategist capable of sourcing creators, editing content, and analysing performance data to drive continuous growth.
Senior Frontend Engineer (Web & App)
Quantum is seeking a Senior Frontend Engineer to own the frontend development for its Cashback and Custard apps and websites. The role involves shipping new revenue-driving functionality, enhancing the release pipeline with automated testing, and improving the user experience of reward products. The engineer will also collaborate with backend developers on Python services.
Paid Social Specialist
Quantum is seeking a Paid Social Specialist to join its Performance Marketing team in London. This role focuses on executing, optimising, and scaling paid acquisition campaigns across major social platforms like Meta, Snapchat, and TikTok. The specialist will drive customer acquisition through creative-led strategies and data-driven optimisation, collaborating with various teams to enhance campaign performance and contribute to marketing growth initiatives.
Technical CRM Executive
We are seeking a Technical CRM Executive to join our growing CRM team in London. This role supports the delivery of customer-centric, automated experiences across email, SMS, and messaging channels. You will leverage your technical aptitude with JavaScript, APIs, and SQL to manage CRM initiatives, data quality, and system integrations. The ideal candidate has experience with Adobe Campaign or SFMC and is comfortable working in a fast-paced, data-driven environment.
Technical CRM Executive
Quantum is seeking a Technical CRM Executive to join their affiliate marketing team in London. This role involves supporting the CRM team in delivering automated customer experiences across various messaging channels. The ideal candidate will have experience with CRM platforms like Adobe Campaign or SFMC, along with HTML, SQL, and JavaScript skills. Responsibilities include managing data, troubleshooting technical issues, developing new modules, and working cross-functionally to ensure effective campaign delivery.
Senior Data Engineer
Quantum is seeking a Senior Data Engineer to join their growing Technology team in London. This role involves designing and building a robust, scalable, and high-performance real-time data backbone. You will be responsible for developing and maintaining data pipelines, integrating various data sources, and leading the development of transformation workflows. The position offers an opportunity to work with modern technologies and collaborate across teams to support business objectives.
Head of Data Engineering and Machine Learning
Quantum is seeking a Head of Data Engineering and Machine Learning to lead its technical teams in London. The role focuses on defining the data strategy, managing the delivery roadmap, and scaling the company's data infrastructure and machine learning models. The position requires a leader who can bridge the gap between complex technical requirements and business performance while fostering a high-performing team culture.
Graduate Data Engineer
The Graduate Data Engineer role offers a hands-on opportunity to build and maintain scalable data infrastructure within a fast-paced environment. You will be responsible for developing data pipelines, ensuring data quality, and automating processes to support business-wide analytics. This position is perfect for a proactive graduate looking to develop their engineering skills while making a tangible impact on data operations.
Senior Full Stack Engineer
Quantum is seeking a Senior Full Stack Engineer to join its growing technology team. This role involves shaping and scaling the company's technology platform, with a focus on both frontend and backend systems. The engineer will contribute to coding and architecture, while also mentoring other developers and fostering a culture of quality. The position requires strong expertise in modern JavaScript frameworks, Node.js, and database technologies, as well as experience with CI/CD pipelines and containerisation tools.
Senior AI Engineer
We're looking for an experienced Senior AI Engineer to join our team. You'll be at the forefront of designing, developing, and deploying AI systems that power personalised advertising, customer journey analytics, audience segmentation, and real-time bidding strategies. Working closely with BI, data engineers, and product teams, you'll help build scalable AI solutions that deliver measurable business outcomes. Our infrastructure is powered by Google Cloud Platform (GCP), and we take pride in applying cutting-edge AI techniques to real-world marketing and advertising challenges.
Customer Service & Operations Manager
Quantum is seeking a Customer Service & Operations Manager to lead and scale their customer support function in Maidstone. This role focuses on transforming manual processes into an efficient, automated operation to protect customers, prevent fraud, and ensure accurate payouts. The manager will own the end-to-end customer experience and drive improvements in key metrics.