With over a decade of experience in digital optimisation, experimentation, technology and business leadership, I bring a unique blend of strategic and technical expertise to drive measurable impact for global brands across diverse industries. As a founding member and Chief Technology Officer at Creative CX, I led cross-functional teams to deliver advanced solutions in Experimentation, Analytics, and Personalisation, focusing on scalable strategies that extend across all digital channels.My career has included pioneering experimentation practices and collaborating with over 1,000 high-profile UK and international brands. I specialise in client and server-side experimentation, sophisticated A/B testing, building Centres of Excellence (CoEs), and integrating leading experimentation platforms to align technical execution with strategic business goals.In addition, I have cultivated strong relationships with industry-leading vendors, equipping clients with advanced experimentation, personalisation and data capabilities. My passion lies in fostering collaboration, mentoring talent, and creating innovative frameworks that empower businesses to succeed in competitive digital landscapes.Prominent brands I’ve had the privilege of working alongside:Sky, BBC, EasyJet Holidays, Hastings Direct, IHG Hotels & Resorts, Direct Line Group, Pizza Hut, Treatwell, Asda George, Radley, AJ Bell, Heathrow, Investec, Primark, Staysure, Net-A-Porter, Mr Porter, YOOX, The Outnet, Sixt, Penhaligon’s, British Gas, Kaplan International, Elsevier, and many more.
Impact.
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Founder And Managing DirectorImpact.London, Gb -
Freelance Experimentation ConsultantFreelance Oct 2024 - PresentLondon Area, United KingdomI am available to partner with brands, agencies, and technology vendors to drive measurable growth and maximise ROI through advanced experimentation and digital optimisation strategies. With over a decade of hands-on experience in Experimentation, Conversion Rate Optimisation (CRO), Analytics, and Personalisation, across all aspects, I empower businesses to elevate their existing capabilities.I am available to support clients at all maturity levels, as well as optimising digital ecosystems across multiple channels. By working closely with clients, I design and help implement data-backed strategies that future-proof technical infrastructures, processes and people to better align with short and long-term business objectives.I am also available to support technology vendors in maximising client success from pre-sales by enabling highly scalable onboardings. I bring expertise in seamlessly integrating experimentation and adjacent technologies, enabling vendors to enhance overall value with robust and bespoke solutions.If you’re ready to elevate your experimentation initiatives and see impactful results, let’s connect to explore how I can contribute to your growth.
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Chief Technology OfficerCreative Cx Dec 2019 - Nov 2024London, United KingdomCreative CX is an innovative consultancy dedicated to Conversion Rate Optimisation (CRO), partnering with leading brands to push the boundaries of experimentation and deliver enhanced digital experiences. As a founding member and Chief Technology Officer, I have driven the technical strategy and vision that underpins Creative CX’s mission, focusing on delivering scalable, data-driven solutions that extend experimentation beyond traditional web channels.In this role, I lead a cross-functional team of engineers, consultants, technical architects and quality assurance specialists, overseeing the design, development, and deployment of full-stack experimentation projects with various degrees of scale. My focus has been on enabling clients to execute sophisticated A/B testing, develop Centres of Excellence (CoEs) for experimentation, and integrate robust infrastructure and technology solutions across digital ecosystems. Through close collaboration with clients, I ensure that our solutions not only enhance user experience but also contribute to measurable improvements in conversion rates and business outcomes.A significant part of my role involves managing partnerships with industry-leading experimentation platforms to provide our clients with advanced testing and personalisation capabilities. I oversee the integration of these technologies into clients' digital landscapes, supporting seamless and impactful testing initiatives tailored to each organisation’s objectives.My work as Chief Technology Officer has contributed to Creative CX’s success in providing high-quality, scalable experimentation and CRO solutions to a diverse array of sectors, including e-commerce, healthcare, media, and hospitality, among others. By aligning technical strategy with business objectives, I ensured every project delivered maximised value, fostered innovation and supported sustainable growth. -
Head Of DevelopmentCreative Cx Aug 2017 - Dec 2019LondonCreative CX is a leading consultancy specialising in Conversion Rate Optimisation (CRO), Analytics, and Personalisation, dedicated to transforming the digital experiences of its clients. Known for pushing the boundaries of experimentation beyond the web, Creative CX partners with brands to unlock new growth opportunities through innovative, data-driven strategies.As a co-founding member and as a Head of Development at Creative CX, I played a pivotal role in shaping the company’s technical vision and offerings. Leveraging my extensive experience in experimentation, I enabled full-stack experimentation solutions. I also contributed to developing innovative products such as Centres of Excellence (CoEs), highly scalable infrastructures for experimentation, and technology vendor onboarding and integrations. These initiatives allowed us to support clients with diverse needs across multiple segments and vendor ecosystems.I led the technical team in delivering advanced CRO, Analytics, and Personalisation solutions, crafting technical strategies that addressed industry challenges and facilitated impactful, cross-channel experimentation. My focus extended beyond traditional web applications, helping clients optimise their broader digital ecosystems.Additionally, I established robust development frameworks that empowered clients to address complex digital challenges effectively. By working closely with clients and cross-functional teams, I ensured the design and implementation of scalable development projects that resulted in significant improvements in both conversion rates and customer experiences.My work also involved building and nurturing a highly collaborative, agile development team, fostering a culture of continuous innovation and improvement. These efforts contributed to Creative CX’s reputation for delivering high-quality, scalable digital solutions that drive measurable business results. -
Head Of Solutions EngineeringRedeye Feb 2016 - Jul 2017LondonRedEye is a leader in Conversion Rate Optimisation (CRO), renowned for its advanced capabilities in usability, web analytics, behavioural email, UX design, and A/B and multivariate testing. The company partners with top UK brands to optimise online performance and increase revenue through strategic experimentation and data-driven decision-making.As Head of Solutions Engineering, I was responsible for the strategic and technical direction of RedEye’s Optimisation division, overseeing the successful delivery of complex CRO projects for high-profile clients. I led a multidisciplinary team of engineers and quality assurance professionals, guiding the full lifecycle of A/B and multivariate testing initiatives.A core part of my role involved managing partnerships with leading experimentation platforms to integrate their tools into client projects, delivering robust testing frameworks tailored to each client’s unique objectives. I crafted and implemented strategies that ensured all solutions were data-backed, user-centric, and aligned with clients' broader business goals.Additionally, I took an active role in mentoring and developing team talent, fostering a collaborative and growth-oriented environment. My leadership in technical innovation, partnership management, and team development strengthened RedEye’s reputation in the CRO field and delivered significant, measurable value for our clients. -
Lead Solutions EngineerRedeye Feb 2015 - Jan 2016London BelgraviaAs Lead Solutions Engineer at RedEye, I was responsible for leading both the Engineering and Quality Assurance teams, overseeing the technical implementation of complex A/B and multivariate testing projects for high-profile clients. My focus was on critical areas such as checkout and product pages, where optimising user experience and increasing conversion rates were key priorities.In collaboration with UX designers, I developed and executed technical strategies that enhanced user experience while ensuring all solutions adhered to accessibility standards. I took a hands-on approach to front-end development, ensuring that A/B test variations were fully compatible across browsers and devices.I also worked closely with senior management to integrate leading experimentation platforms into clients' digital ecosystems, ensuring seamless implementation of these tools across various campaigns. My role extended beyond technical delivery, as I actively mentored junior team members, helping to cultivate talent and refine internal processes, which contributed to greater testing efficiency and improved client satisfaction. -
Senior Optimisation ConsultantRedeye Apr 2014 - Jan 2015London BelgraviaAs Senior Optimisation Consultant, I led the development and implementation of UX-driven A/B testing projects for RedEye’s clients. I focused on building and maintaining test variations that were compatible across devices and browsers, and met accessibility standards. I worked closely with UX teams to translate usability findings into effective testing strategies that improved conversion rates.Additionally, I contributed to the development of internal processes to streamline A/B testing, collaborated on project management tasks, and provided data-driven insights using a diverse array of Analytics products to help refine optimisation strategies for our clients. -
Optimisation ConsultantRedeye Mar 2013 - Mar 2014Belgravia, LondonRedEye is a leading Conversion Rate Optimisation (CRO) specialist renowned for its usability, web analytics, behavioural email, user experience (UX) design, and A/B/MVT testing expertise. RedEye partners with prominent UK brands to enhance online performance through strategic experimentation and data-driven optimisation.As an Optimisation Consultant and Front-end Engineer, I was responsible for implementing A/B testing and optimisation strategies for RedEye’s clients. I worked on developing test variations for key web pages, ensuring that they were functional across different platforms and aligned with UX best practices. I also collaborated with UX teams and senior engineers to execute A/B tests that improved user experience and conversion rates.In this role, I comprehensively understood the entire A/B testing lifecycle. I contributed to all testing areas, from designing variations and creating test specification documents to assisting with QA and conducting in-depth results analysis. This well-rounded involvement gave me a deep insight into the intricacies of A/B testing, helping me to understand how each phase impacts the overall success of optimisation efforts. -
Search Engine Optimisation (Seo) ConsultantDigitalis Reputation Apr 2012 - Mar 2013Mayfair, London, UkDigitalis Reputation is a leading professional services firm specialising in Online Reputation Management (ORM). It works with top reputation lawyers, PR firms, private security firms, publicists, and private banks to protect and enhance the online presence of high-profile clients.As an SEO Consultant, I supported SERP Managers with SEO, social media, and content creation while developing and implementing strategies to manage brands' online reputations. My role involved executing and managing ORM campaigns, contributing to process development, and facilitating project strategy formulation.I actively supported new business proposal research, website design, development, and maintenance for individuals and brands, as well as helping to create and optimise operational processes to ensure efficient campaign delivery.
Frequently Asked Questions about Nelson Sousa
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Nelson Sousa works for Impact.
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Unit Manager & Senior Nurse At University Hospitals Sussex Nhs Foundation Trust / Bscn (Hons), Pgcert Clinical Practice (Adult) / Certified CoachBurgess Hill
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