Managing Director
Ben Labay
Ben combines years of academic and statistics training with customer experience and UX knowledge to help our team run programs for companies around the world. Clients include ADP, Native, Codecademy, and National Bankcard.
Managing Director EMEA
Annika Thompson
Annika has been doing digital marketing and optimization since 2012. She brings in-house experience from start-ups to FTSE 100 corporations. Using research skills gained from her master’s degree she tackles complex client problems. Clients include Native, Codecademy, Charles Tyrwhitt, and TeeSpring.
CTO
Silver Ringvee
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Silver is experienced in auditing and improving advanced digital analytics implementations, running testing and personalization programs at scale and building systems that collect, transform, store, analyze and report on terabytes of data. Clients include Codecademy, MongoDB, BitDefender, and Philips.
COO
Kristin Ravesloot
Kristin has 10+ Years of experience building Digital Marketing Agencies around the globe. She's an entrepreneur at heart, with a specialization in helping to grow online start-ups. After completing her master's degree she has been able to apply her learnings to the field of conversion rate optimization, with a passion for understanding user behavior and a process all about analyzing, strategizing, and optimizing!
Design Lead
László Zagyva
László has been with Speero from the very beginning. He originally studied at the Hungarian Academy of Arts, and then worked as a designer for various companies and institutions before joining Speero back in 2011. László works on managing Speero’s visual identity, test designs, and conducting brand and UI audits. He has developed many of our internal processes and models for improving the design and user experience for businesses.
Research Director
Emma Travis
Emma has been working in UX and conversion rate optimization for 10 years. With a background in behavioral research, she is passionate about analyzing user behavior and helping businesses unlock the growth opportunity in truly understanding their users. Emma also has experience building and developing optimization teams, processes, and cultures, most recently at one of the UK’s fastest-growing airlines. Clients include Jabra, Carphone Warehouse, Irwin Mitchell, and First Direct.
Associate Director of Experimentation Strategy
Alexander Loesch
Alex comes to Speero with a plethora of experience, having served as an Experimentation Strategist in a myriad of verticals, including e-commerce, B2B SaaS, and travel. His passion is understanding the user journey in its entirety and uncovering ways to promote seamless integration between marketing channels.
Strategy Consultant
Paul Randall
Paul has used a design thinking mindset to enhance customer experiences for over eight years. His empathy for customer behavior comes from conducting hundreds of usability studies and experiments. Clients include Screwfix, Clarks, Maximuscle, and Flogas.
EU Team/Operations Lead
Gertrud Vahtra
Gertrud is passionate about merging quantitative and qualitative data to get insights into customer behaviors, motivations, and pain points. She was named Young CRO of the Year 2020 and brings a true sense of curiosity and care to all her work. Clients include Bitcasino, MongoDB, BitDefender, and Charles Tyrwhitt.
Senior Experimentation Strategist
Carlos Trujillo
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Carlos has over a decade of experience working in online marketing and mass media. As an agency founder and Experimentation consultant, he has led projects on web development and conversion optimization for more than 90 brands in multiple regions and verticals. This has provided him with broad expertise in customer acquisition, behavioral psychology, and data analysis that let him contribute to driving growth through systematic innovation.
Analyst
Vasisth Shiva Kumar
Vasisth received his master's degree in Data Science. He has gained working experience in statistics, website data analysis, and reporting for small scale eCommerce clients. He loves psychology and economics and is always looking to keep himself updated when it comes to novel business trends.
US Team/Operations Lead
Jeff Kellner
Jeff has over a decade of project management and operations experience along with a bachelor's degree in marketing. He is a tireless problem solver and has a track record of identifying and fixing operational inefficiencies.
Strategist
Kairi Liibak
Kairi has an international digital marketing background from managing PPC programs to creating and analyzing digital media strategies. She's passionate about driving business growth opportunities through customer-centric user experience.
Program Manager Lead
Jason Lively
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Jason brings a wealth of experience in program management— with a focus on digital projects. With a background in front-end development and design he is well equipped to manage a diverse array of client needs throughout the entire project lifecycle. A committed problem solver, Jason's ability to communicate efficiently makes him an effective program manager for a wide range of clients.
Program Manager
Kristina Labovic
Kristina's experience spans from website optimization as a CRO & SEO Project Manager to app store optimization and content writing. Through her digital marketing journey of around a decade, she has developed a knack for analyzing and interpreting data, besides her great interest in content strategies, UX, and customer psychology for both websites and mobile applications. She worked with her CRO and SEO team on optimizing high-traffic websites for 2 years by capitalizing on the importance of these two disciplines working together towards the same goal.
Program Manager
Tales Sampaio
Tales has over ten years of marketing expertise, as well as extra experience in sales, customer success, and consulting.
He has a Bachelor's degree in business administration with a marketing specialization. He is a versatile person who has worked on projects in several areas of Digital Marketing such as SEO, CRO, Lead Gen, and PPC. Among the industries in which he has worked include SaaS, healthcare, retail, and digital education solutions. He has already received mentoring from specialists from Google, AB InBev, and Stanford University.
Program Manager
Johan Sebastian Rodriguez
Sebastian, with a background in programming and digital marketing, skillfully employs his expertise to achieve optimal results. His experience extends to collaborating with numerous clients, enhancing their marketing campaigns, and refining both internal and external processes. His enthusiasm for problem-solving, witnessing tangible results, and fostering team collaboration shines through in his work.
Program Manager
Donovan Tesin
Donovan combines a strategic mindset with his experience in conversion rate optimization to support client’s goals. His past roles include experimentation, SEO, and product marketing. A strong advocate for the user-experience, Donovan is passionate about websites that generate growth but also provide an intuitive experience for the end user. He values collaboration, consistently working alongside colleagues and clients to drive successful outcomes.
Junior CRO Program Manager
Ing How Law
Ing How pairs a strong behavioral and economic science background (MSc from the University of Warwick) with extensive experience in government and nonprofit organizations. With a keen eye for data-driven insights, Ing How excels at overseeing complex projects, coordinating cross-functional teams, and engaging diverse stakeholders. His proven ability to manage multiple priorities—while maintaining clear communication and strategic focus—enables him to deliver impactful program outcomes and foster collaborative, growth-oriented environments.
Program Manager
Rachel Hugo
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Rachel began her marketing career in 2019 and has spent the past 3+ years specializing in partnerships, events, and client success. With experience in eCommerce and B2B agencies, she leads cross-functional projects that drive meaningful results. She’s partnered with brands like Adobe, BigCommerce, Amazon, and Shopify.
Analyst
Inger-Adele Mägi
Inger is a project analyst working with international clients in various fields. Her previous experience includes working as a marketing specialist for clients based all around the globe and as a finance consultant helping clients with accounting and analyzing their financial situation. She's eager to provide the best experience for her clients' customers and be a part of their success story.
Senior Analyst
Lizette Moreno
Lizette is an analyst and researcher with a master's degree in Communication Theory. She has 12 years of experience in digital research in the Academic field, Politics and Government, Technology, and Retail industries. Lizette is passionate about understanding customer behavior, the patterns, and the motivation underlying those behaviors. She is interested in exploring and trying out new and innovative remote research methodologies, especially those related to social media users' natural expressions.
Analyst Lead
Jelena Moroz
Jelena graduated with a bachelor’s degree in Marketing and Digital Advertising in Ireland. She joined Speero bringing with her a range of marketing and account management skills. Her previous roles include working for Google and Accenture, where she managed large portfolios of clients and projects across EMEA. Jelena continues to expand her knowledge, pursuing a range of courses and accreditations across marketing disciplines.
Senior Analyst
Carlos Ramos
Carlos works as an experimentation analyst at Speero. He's passionate about finding patterns in data, working on research analysis, and digging into analytical tools to come up with testing opportunities. Carlos is always learning and improving his expertise. He's also a CXL-certified conversion optimizer and growth marketer.
Senior Developer
Mihkel Saariste
Mihkel has more than 8 years of experience in full-stack web development, with a particular focus on front-end development. He has expanded his knowledge into implementing and customizing martech solutions too. Mihkel has built over 300 A/B tests using industry-leading tools such as Optimizely, VWO, Google Optimize, Sitespect, Adobe Target, and more.
DevOps Engineer
David Rimmel
David started out as Quality Assurance Specialist, and over the years has acquired a lot of experience with different types of experiments using every kind of testing platform. David is always looking to extend his knowledge and now also helps perform Google Analytics Health Checks and Test Bandwidth Calculations for our clients.
Developer & Program Manager
Sabina Iurascu
Sabina is a detail-oriented frontend developer and program manager with expertise in conversion rate optimization and A/B test implementation. She blends technical skills with solid organizational abilities to build and manage web experiences that generate growth for clients and provide a seamless user experience. Her strong communication skills and collaborative mindset have contributed to successful outcomes in large international projects across telecommunications, automotive and aviation sectors.
Senior Developer
Mate Varju
Mate is a front-end developer with experience in a wide range of technologies. He’s determined to find the optimal solution to any client needs with a special focus on delivering a more enjoyable user experience. He’s applied his skills to various fields, including airfleet management and manufacturing industry, before joining Speero in 2019.
Developer
Diana Olsen
Diana has a Bachelor's degree in Web Development. She has multiple years of a working experience as a front-end developer building websites and tools in a range of fields, including the advertising and motion graphics industry. Diana is a great fit for Speero's development team.
Developer
Sonu Rana
Sonu Rana is a Front-End Developer at Speero with a background in Computer Science and Engineering. Over the past 5+ years, he’s built 2,000+ A/B tests that help businesses grow smarter. From SaaS and B2B to e-commerce and lead gen, he’s worked across a range of industries—always focused on turning ideas into measurable outcomes. He’s skilled in experimentation platforms like VWO, Google Optimize, Optimizely, Convert, and Varify.io. At Speero, he combines curiosity, clean code, and CRO strategy to help clients make confident, data-backed decisions.
QA Specialist
Andrea Illes
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With a BA in Graphic Design and a Masters in Economics, Andrea brings an eye for detail and business acumen to her role as QA specialist. She has more than ten years of experience in UX/UI design and web development. Curious, and a continuous learner, Andrea brings a great mix of skills and experience to the Speero team.
Designer
Daleska Granados
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Daleska has more than 5 years of experience in UX and UI design. She is able to create a solution or service from the beginning of the research process to implementation and maintenance stages. She enjoys opportunities to work collaboratively, advance in leadership roles, and engage in innovative processes and new technology.
Finance Manager
Elina Udekjul
Elina received her bachelor's degree from the Estonian Academy of Security Sciences in taxation and customs. Previously she has had several internships in taxation, accounting and auditing fields in Estonia and Malta. From there she pursued her finance career at Deloitte, working in the audit department for five years before joining Speero.
Content Marketer
Martin Pavlovic
Swiss-army-knife content marketing manager. Copy, content, and design, Martin combines them all into a flashy, memorable brand experience. Worked in a slew of industries, including sales, until starting a marketing career in 2018. Currently leading demand generation initiatives at Speero.
Accountant
Agnes Sassiad
Agnes acquired her educational degree at Tallinn University of Technology in Accounting and Business management. Formerly Agnes worked at an accounting service providing companies with clients from various business fields. After gathering knowledge and skills from Ernst & Young Agnes joined Speero to contribute to the company’s finance department.
Chief Growth Officer
Jonny Longden
Jonny leads Speero's mission to define and drive the global experimentation-led growth movement. Drawing on nearly 20 years of diverse experience spanning agency, client-side, and management consultancy at senior levels, he challenges traditional views of digital experimentation. Jonny focuses on architecting strategic, evidence-driven approaches that transcend simple metrics to deliver genuine, systemic business growth and innovation for clients.
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