At Quantum, we connect global brands with high-intent consumers. We turn intent into action and complexity into clarity.
Our Mission is clear, to help smarter, faster buying decisions. Our vision, to be the world’s most used digital comparison service, delivering value and simplicity to millions.
We drive growth through data-driven affiliate marketing built for performance from day one. Every campaign is measurable, optimised in real time, and designed to scale.
With in-house tech, full-stack analytics, and a compliance-first mindset, we give our partners an edge. We drive confident decisions and growth in regulated and high-growth sectors. We’ve helped ambitious brands grow faster, smarter, and globally.
Sales Operations Executive
Quantum is seeking a Sales Operations Executive to join their growing team in London. This role is responsible for maintaining accurate merchant data, onboarding new merchants, and ensuring the quality and functionality of deals and pages. The ideal candidate will be detail-oriented, organised, and a proactive communicator, eager to learn and take ownership of tasks within a fast-paced environment. This position offers hands-on experience in sales operations and commercial processes, with opportunities for development and mentorship.
Senior AI Engineer
This role is for an experienced Senior AI Engineer to design, develop, and deploy AI systems for personalised advertising and customer analytics. You will work with BI, data engineers, and product teams to build scalable AI solutions on Google Cloud Platform. Key responsibilities include architecting multi-agent systems, implementing advanced agentic workflows, and ensuring system performance and security. The role also involves mentoring junior engineers and championing best practices in AI development.
Affiliate Account Executive
Quantum is seeking an Affiliate Account Executive to join their growing Affiliate team in London. This role involves supporting the daily management, activation, and optimisation of affiliate publishers to drive performance across core markets. The successful candidate will work closely with various internal teams and develop key commercial, analytical, and relationship management skills. This is an excellent opportunity for someone with 1-2 years of experience in a related field to contribute to a data-driven affiliate marketing 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.
Performance Marketing Specialist
Quantum is seeking a Performance Marketing Specialist to join their team in London. This role involves owning the execution, optimization, and scaling of paid acquisition campaigns across Paid Social and Native channels. You will drive high-quality traffic and work with platforms like Meta, Snap, Taboola, and Outbrain. The position requires hands-on campaign management, creative testing, and data-led optimization to meet marketing priorities and growth initiatives.
Head of Product
Quantum is seeking a Head of Product to lead and scale their product function. This role involves owning the end-to-end product strategy and execution, setting direction, and ensuring product excellence. The ideal candidate will have experience leading product teams in comparison or affiliate businesses and a track record of shipping products that drive commercial outcomes. Responsibilities include setting priorities, fostering experimentation, understanding customer needs, and leading a product management team.
Senior Data Operations Manager
Quantum is seeking a Senior Data Operations Manager in London to automate and optimize data operations processes. This role involves transitioning from manual workflows to scalable solutions, collaborating with engineering on integrations, and ensuring data quality. The position requires strong technical and communication skills, with the opportunity to manage a direct report.
Head of CRM
Quantum is seeking a Head of CRM to lead strategic planning, design, and execution of customer communications across all outbound channels and brands. This role involves owning CRM program performance and optimization, leading a London-based team, and taking a data-informed approach to drive engagement and results. The ideal candidate is a technically strong marketer with hands-on experience in Salesforce Marketing Cloud and a deep commitment to customer centricity.
Affiliate Account Manager
Quantum is seeking an Affiliate Account Manager to join their growing team in London. This role involves supporting and expanding a portfolio of affiliate publishers, managing daily performance, reporting, and activation. The ideal candidate will possess strong commercial and analytical skills, a good understanding of digital marketing, and excellent relationship-building abilities. This position offers a hybrid working model and a competitive benefits package.
Senior AI Engineer
Quantum is seeking a Senior AI Engineer to design, develop, and deploy AI systems for personalised advertising and customer analytics. You will work with cross-functional teams to build scalable AI solutions on Google Cloud Platform, focusing on Mar Tech challenges. This role involves researching advanced agentic workflows, ensuring system reliability and security, and mentoring junior engineers.
Affiliate Account Executive
An Affiliate Account Executive is sought to join Quantum's growing Affiliate team in London. This role involves supporting the daily management, activation, and optimisation of affiliate publishers to drive performance across key markets. You will collaborate with various internal teams and develop essential commercial, analytical, and relationship management skills. The position requires a proactive individual with a keen eye for detail and a desire to learn and grow within a fast-paced environment.
Business Analyst - Contract
This is a 3-6 month contract role for an experienced Business Analyst based in London. The role involves transforming complex data into actionable insights to drive company growth, managing business intelligence end-to-end. Key responsibilities include building Tableau dashboards, performing profit-driving analysis, and implementing tracking mechanisms. The ideal candidate will have a strong technical skillset and the ability to collaborate with various teams.
Senior Data Engineer
Quantum is seeking a Senior Data Engineer to join their growing Technology team. The role involves designing and building a robust, scalable, and high-performance real-time data backbone. You will focus on creating and maintaining data pipelines for real-time processing and analytics, working with modern technologies and collaborating with various teams to meet business needs.
Affiliate Account Manager
Quantum is seeking an Affiliate Account Manager to join their growing team in London. This role involves managing and growing a portfolio of affiliate publishers, overseeing day-to-day performance, reporting, and activation. The ideal candidate will have 2-3 years of experience in affiliate marketing account management, strong analytical skills, and excellent communication abilities. The position offers a hybrid working model and a competitive benefits package.
Paid Social Lead
Quantum is seeking a Paid Social Lead to join their growing Paid Media team in London. This role is responsible for the sustained growth and optimization of paid social campaigns, playing a key part in integrated multi-channel strategies. The ideal candidate will be highly analytical, data-driven, and passionate about paid social, leading a team to drive revenue through hands-on strategy execution. Responsibilities include campaign management, budget oversight, performance monitoring, and competitor analysis.
Product Designer (Mid)
A mid-level Product Designer is sought to join the Digital Experience team, focusing on optimizing websites, landing pages, and conversion journeys for measurable commercial impact. This role involves designing high-performing user experiences, translating insights and business requirements into intuitive designs, and leveraging AI tools for efficiency. The designer will collaborate closely with CRO, Product Operations, Marketing, and Engineering teams, with a strong emphasis on execution, iteration, and data-driven outcomes.
Senior Full Stack Engineer
Quantum is seeking a Senior Full Stack Engineer to join their 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 lead by example in coding and architecture, mentor other developers, and collaborate with UX/UI designers to build high-quality, scalable applications. This is an opportunity to make a significant impact in a fast-moving environment.
Senior Full Stack Engineer
Quantum is seeking a Senior Full Stack Engineer to join their 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 be responsible for coding, architecture, and guiding other developers, fostering a culture of quality and continuous improvement. Key responsibilities include leading development, shaping system design, mentoring engineers, and implementing user-friendly interfaces.
Back End Engineer
Quantum is seeking a Back End Engineer to join their growing Technology team. This role involves taking a leading hand in scaling the technology platform, contributing to architectural direction, and building robust technical solutions. The engineer will focus on backend systems and services, collaborating with cross-functional teams to build scalable and resilient systems. Key responsibilities include hands-on development, shaping architecture, building APIs and microservices, and mentoring other engineers.
Brand Copywriter and Content Manager
Quantum is seeking a Brand Copywriter and Content Manager to create and optimize content across their brand portfolio. This role requires strong writing skills, attention to detail, and a passion for brand storytelling to ensure consistent, on-brand, and performance-focused messaging. You will collaborate with creative, marketing, and product teams to enhance brand voice, user experience, and commercial performance. The position blends hands-on writing with strategic support, aiming to improve existing guidelines and leverage data for content optimization.
Lead Product Manager
Quantum is seeking a Lead Product Manager to shape and deliver the Qi Platform strategy, focusing on comparison websites. This role involves translating company vision into actionable roadmaps, collaborating with cross-functional teams, and driving product lifecycle management. The ideal candidate will have hands-on experience with affiliate-driven products, SEO, content, personalization, and lead generation, with a strong understanding of the user journey from search to conversion. This is an opportunity to scale impactful features in a fast-paced, data-informed environment.
Data Graduate/Junior Data Operations Analyst
Quantum is seeking a Data Graduate/Junior Data Operations Analyst to join their Financial Operations team in London. This role offers hands-on experience in data collection, validation, and pipeline monitoring, ideal for an analytical thinker passionate about data optimisation. You will ensure data accuracy, support new data source onboarding, and contribute to process improvements, working collaboratively to maintain data integrity and support business decisions.
CRM Manager
Quantum is seeking a CRM Manager to join their growing team in London. This role involves managing and executing the company's CRM strategy, focusing on optimizing existing campaigns and introducing innovative approaches to enhance engagement and performance. The CRM Manager will lead end-to-end CRM initiatives, from ideation to analysis, and will be responsible for developing and delivering multichannel campaigns to drive customer retention and lifetime value.
Technical CRM Manager
Quantum is seeking a Technical CRM Manager to join their growing team in London. This role involves managing and executing the company's CRM strategy, focusing on optimizing existing campaigns and introducing innovative approaches to enhance customer engagement and performance. The Technical CRM Manager will lead end-to-end CRM initiatives, from ideation to analysis, and collaborate with various teams to align CRM plans with business objectives. Key responsibilities include developing and delivering multichannel campaigns, rigorous A/B testing, and ensuring compliance with regulatory standards.
Platform Engineer
Quantum is seeking a Platform Engineer with strong Google Cloud Platform (GCP) expertise to join their engineering team. This role is crucial for designing, building, and maintaining the core infrastructure that supports application deployment, management, and scaling. The ideal candidate will focus on automation, Infrastructure-as-Code, and CI/CD pipelines to enhance developer productivity and ensure platform reliability and security.
Sales Operations Executive
Quantum is seeking a detail-oriented Sales Operations Executive to join their Sales Operations team. This role is ideal for individuals beginning their career in commercial operations, offering exposure to sales, finance, and data team collaboration. The Sales Operations Executive will be crucial in maintaining system accuracy and team efficiency by managing updates, checks, and reconciliations within the sales process. Key responsibilities include CRM and CMS updates, data validation, finance preparation, operational support, and process improvement.
Sales Operations Administrator
The Sales Operations Administrator role is an excellent entry-level position for individuals interested in commercial operations. This role supports the sales process by ensuring system accuracy and smooth team operations through data management and reconciliation. Key responsibilities include maintaining CRM data, validating information against dashboards, preparing financial documentation, and improving operational processes. The position offers hands-on experience in sales operations, exposure to various systems, and development in analytical and communication skills.
Sales Operations Executive
The Sales Operations Executive role is an excellent entry-level opportunity for individuals interested in commercial operations. This position supports the sales process through meticulous data management and reconciliation, ensuring system accuracy and smooth team operations. Key responsibilities include maintaining CRM data, validating client information, and assisting with financial documentation. The role offers hands-on experience in sales operations, exposure to various business systems, and development in analytical and communication skills.