The paper trail.
Recommendation letters clients put on their own letterhead — scanned, signed, with names. Originals are in Russian; the captions translate the substance.

“Long-term, productive SEO collaboration: improved search visibility in both Yandex and Google, handled complex tasks and delivered solid business results. We recommend Dmitriy as an effective SEO specialist.”

“Site traffic up 52%, enquiries up 26%, catalogue expanded by 15% — professional approach, high expertise and meticulous SEO work on our resource.”

“Search traffic grew several-fold within a few months; well-configured ads brought a large volume of bookings for the promoted event. We recommend Dmitriy as a qualified and responsible SEO specialist.”

“The work took us into the Top-10 for our target queries and delivered a stable monthly flow of enquiries. Quality work and steady growth for the project.”

“Professional, highly effective work with strict deadlines and agreed KPIs met. Positions for the queries we care about grew significantly, and targeted enquiries through the site increased.”

“A reliable business partner: high quality of work, responsiveness and an individual approach to promoting our site.”

“Significant growth of the site in both Yandex and Google search results. We recommend Dmitriy to our partners as a responsible and competent search-promotion specialist.”
More context on the work behind these letters: case studies with numbers.