"Jelmer heeft het ontwikkeltraject van de webwinkel van Arrowz van begin tot eind verzorgd. Het eindresultaat mag er zijn zoals een ieder zal beamen die de website bezoekt: www.arrowz.org. Behalve de succesvolle afronding van het project binnen de afgesproken tijd, heb ik waardering voor de professionaliteit, heldere communicatie en prettige omgang van Jelmer. Samengevat kan ik over Jelmer zeggen: hij doet wat hij zegt en hij zegt wat hij doet!"André Wolthuis, Uitgever Arrowz Publishing, Amsterdam

"Working with Jelmer is truly inspiring! His drive and expertise helped me as entrepreneur to focus, to improve and to grow. Furthermore, he has an impressive network and connected me several times to valuable connections or potential business partners. Jelmer is a true partner in realizing growth, both of the company as well as the entrepreneur!"Menachem Levi, Entrepreneur and business owner, greater Tel-Aviv area, Israël

"A coach is someone who lifts others and holds them in a place of non judgement and elicits the greatness from within them. Through powerful listening and integration of strategic processes, the client gains new perspective and freedom to move forward in goal achievement. It is never mentoring, advice, therapy, or consulting, or counseling, although some coaches are cross functional and some clients seek that. Jelmer has understood that well. It's been a joy working with him!"Anne Avigdor, Tel Aviv, Israël

"The secret is not to learn how to have fun and joy at work; the secret is to do work that is naturally engaging to who you are and what you are, so you know that you are making your highest and best contribution."Lynn Taylor, Founder Taylor Protocols, Tukwila, WA United States

"One of the greatest gifts I have ever given to myself is to work with a good coach. Coach Jelmer has been a constant source of inspiration, motivation, encouragement and support (and much humor!) With his gentle, firm and sometimes downright very straight-forward guidance, I have clarity in my purpose and a strategy to translate my vision into reality. He has helped me navigate the rough terrains, held me up when I was down and cheered me on when I was on a roll. He has kept me accountable to myself, taught me new skills, and reminded me to value myself - without reservation!"Rivkah Perleman , Haifa, Israël

"Jelmer is truly one of a kind and a rare find in business circles. Passionately committed to operational excellence, I see Jelmer as equal parts adventure seeker / lover of life and amazingly proficient at helping others succeed. Ensuring the success of others through operational excellence is truly where Jelmer thrives. He understands business challenges and works on systematic approaches to ensure improvements are permanent in an organization. A true innovator and business leader."Rajeev R. Samuel Vedakkan, Founder & Chairman The B-On Group of Companies, Kerala India