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We have completed 28 years of a journey that began on 28 October 1998. This year, we celebrated our anniversary with the joy of being together in our new office. While reflecting on the experience we have gained and everything we have achieved together over the years, we also shared our excitement for the future.
Diem’s journey has been shaped by the contributions of our colleagues, who have dedicated their efforts since the company’s foundation, our clients, who have placed their trust in us, and our business partners, with whom we have grown together. Every project we have delivered has allowed us to gain new knowledge, strengthen our relationships and continue developing together.
Our belief that “People make the difference” has guided our working culture throughout this journey. With every project, we have seen the value of bringing different areas of expertise together around a shared purpose, learning from one another’s experience and sharing responsibility.
As we celebrate another year, we would like to thank everyone who has played a part in Diem’s story. The work we have accomplished together and the trust we have built over the years hold a special value for us.

Another important development for us this year was moving into our new office. Our new workplace marks the beginning of a new chapter in Diem’s 28 year journey.
The importance we place on understanding our clients’ needs and organisational cultures is also reflected in the way we approach our own workplace. We see our new office as a space where our team can create together, share knowledge and experience, and meet with our clients and business partners.
Guided by our values of One Team, Continuous Improvement, Sustainability, Transparency, People Focus and Making a Difference, we will continue to bring our experience to new projects and collaborations.
We would be delighted to welcome you to our new office.
Address: Atatürk Mahallesi, Mustafa Kemal Caddesi No:62, Ataşehir / İstanbul
We came together with our colleagues for a series of anniversary photo shoots. The photographs taken with our celebration board became a special reminder of this anniversary and our first chapter in the new office.
Turning 28 on 28 October added another layer of meaning to this year’s celebration. We were delighted to share this moment with the team whose dedication contributes to Diem every day.
As we begin our new year, we remain committed to working with the same care and sense of responsibility while continuing to learn and create together. We would like to thank all our colleagues, clients and business partners who have accompanied us on this journey.
Here’s to many more years together!