Introduction
Alex Costin is a Conversion Rate Optimization Specialist based in London. He leverages data and psychology to transform website performance into revenue growth.
This portfolio showcases a structured approach to optimization, blending UX, development, and marketing to remove barriers to conversion.
About
Alex Costin is a Conversion Rate Optimization Specialist with a holistic view of how digital experiences drive business results. He combines strong analytical skills with deep customer psychology understanding, systematically testing improvements that turn data into measurable revenue gains. The best optimizations are multi-disciplinary; Alex understands UX, web development, digital marketing, and customer behavior, allowing him to identify and remove barriers that prevent users from converting. Based in London, he collaborates with cross functional teams to deliver long term, compound growth.
Conversion Rate Optimization Specialist — Core Competencies
Alex analyzes user behavior, identifies conversion barriers, and uses data to make decisions—not just guesses about what will work. He applies behavioral insights to redesign messaging, layouts, and flows to improve the user journey and increase conversions.
He runs structured A/B tests, multivariate tests, and holdout experiments to validate improvements before rolling them out. This scientific approach ensures that changes deliver measurable revenue gains.
Understanding how CRO fits into the bigger marketing strategy, he considers UX design, web development, SEO, paid media, and email marketing to align optimization with broader business goals.
Conversion Rate Optimization Specialist — Process and Methods
Alex builds comprehensive optimization frameworks that include research, hypothesis generation, testing, analysis, and iteration. He demonstrates data storytelling skills, translating complex analytics into clear insights that stakeholders can understand and act on.
He uses heatmaps, session recordings, and funnel analytics to uncover hidden friction points. He also spots technical issues affecting conversion, such as slow load times or broken forms, and collaborates with developers to address them.
Prioritizing systematic improvement over quick wins, he designs long term optimization programs that compound results over time, rather than chasing one off test victories.
Conversion Rate Optimization Specialist — Experience and Collaboration
Alex has led optimization initiatives across multiple digital properties, collaborating effectively with designers, developers, and marketers to implement change and secure stakeholder buy in. His work emphasizes transparency, reproducibility, and cross team alignment to ensure that CRO efforts integrate with existing workflows.
He maintains a disciplined habit of documenting hypotheses, experiments, and outcomes, enabling teams to learn from both successful and failed tests and to apply those insights at scale.
Experience as a Conversion Rate Optimization Specialist
Alex Costin has a track record of driving measurable improvements through rigorous experimentation and cross functional collaboration. He is hardworking, self motivated, and hungry for learning—even when results take time or experiments fail. His work emphasizes sustainable optimization practices that yield long term returns rather than chasing isolated wins.
Marcus insights from past engagements demonstrate how a well structured CRO program can compound value over time by continuously testing, learning, and iterating on the core customer journey.
Alex Costin
London based CRO specialist focused on data driven, customer centered optimization strategies
Email and contact channels available upon request
Conversion Rate Optimization Specialist — Contact
To discuss CRO opportunities, please reach out via the contact page. The CV is available for review and includes detailed case studies and metrics. See the CV page for more information.
View CV or Contact Alex Costin to start a CRO conversation.