At Calderon Search & Advisory, we partner with organisations seeking more than short-term solutions – those committed to shaping a better future through purposeful leadership. Whether you’re navigating transformation, building out a sustainable growth strategy, or preparing for succession, our executive search and and leadership advisory & assessments services are designed to meet your organisation’s ambitions with integrity, insight, and bold thinking. We bring deep industry expertise, a values-led approach, and a commitment to ESG and long-term impact, helping you attract and develop leaders who don’t just fit the brief, but advance your mission.
At Calderon Search & Advisory, we help organizations shape the future of leadership – not just by finding the right people, but by enabling them to thrive. Our work spans two interconnected practices:
Executive Search and Leadership Advisory & Assessments. Through Executive Search, we identify and attract leaders who align with your purpose, culture, and long-term goals – from board and C-suite placements to succession planning and executive market mapping. Through Leadership Advisory & Assessments, we offer strategic guidance, leadership assessments, and organisational insight to support transformation, build resilience, and drive sustainable progress.
Rooted in a deep understanding of ESG, sustainability, transformation and sector-specific dynamics, we operate at the intersection of people and strategy. Our clients partner with us not only for our expertise, but for the way we work – with integrity, bold thinking, and a commitment to lasting impact.
We align every engagement with your mission, delivering leadership solutions that drive both performance and positive impact.
Our combined strength in executive search and leadership advisory ensures holistic guidance, grounded in deep industry and ESG insight.
As a small and niche player firm, we offer tailored, high-touch collaboration, with the agility to adapt and the conviction to challenge.
We build leadership teams and strategies that endure, advancing long-term value for your organisation, stakeholders, and the world
I have worked with Harco on several sustainability positions in our organization. Harco convinced me through his concise and clear approach as well as customer-first principle. I have always felt the needs of my organization were cent...
I have worked with Harco on several sustainability positions in our organization. Harco convinced me through his concise and clear approach as well as customer-first principle. I have always felt the needs of my organization were central to the service provided. I would recommend working with him anytime.
Read more Read lessDirector Landscape and Carbon...
I had the privilege of meeting Harco at a pivotal moment in my career — and I can confidently say he’s one of the rare people in this space who truly understand both sustainability leadership and the human dynamics behind it. Har...
I had the privilege of meeting Harco at a pivotal moment in my career — and I can confidently say he’s one of the rare people in this space who truly understand both sustainability leadership and the human dynamics behind it. Harco brings deep insight into the sustainability and ESG landscape, paired with a sharp instinct for matching people with purpose-driven roles that stretch them. He doesn’t just understand the market — he sees around corners, and engages with clarity, empathy, and strategic precision. What sets him apart is his ability to challenge, guide, and support with equal strength. Thanks to his guidance, I landed in a role that not only aligns with my values, but also enables me to grow and deliver impact. Harco has earned the trust of senior leaders because he brings more than just talent insight — he brings long-term thinking, discretion, and real care. I wouldn’t hesitate to recommend him to any organization or executive navigating complex sustainability transitions.
Read more Read lessSenior business Developer at Remov...
Harco placed me for a previous sustainability role and helped to facilitate my move from the US to the Netherlands. I had a great experience in working with him; he has an extensive network of sustainability experts and guides compani...
Harco placed me for a previous sustainability role and helped to facilitate my move from the US to the Netherlands. I had a great experience in working with him; he has an extensive network of sustainability experts and guides companies on resourcing for these roles. He is very knowledgeable, thorough, supportive, and caring. These qualities made this placement different than other recruiter experiences that I faced—Harco would often proactively follow up with me on the process, provide constructive feedback or changes in the process. Overall, I was impressed with Harco and have recommended his services to both companies looking for ESG and sustainability professionals, and to my colleagues and friends in this field. I cannot offer a higher recommendation than Harco.
Read more Read lessSustainability and ESG Expert
I had the pleasure to work with Harco on a job placement and was absolutely impressed with his approachability, clear vision, and support. As a sustainability professional, I appreciate Harco's knowledge and expertise in relation to s...
I had the pleasure to work with Harco on a job placement and was absolutely impressed with his approachability, clear vision, and support. As a sustainability professional, I appreciate Harco's knowledge and expertise in relation to sustainability jobs, and trust his judgement, assessment, and view on a company's sustainability credentials and authenticity. I would recommend him as a supportive and trustworthy partner, and consider him my go-to resource.
Read more Read lessVP Sustainability @ La Prairie Swi...
Working with Dagmara has been a great pleasure - she is a seasoned professional with extensive market knowledge on sustainable development as well as having a wide network of firms and specialists active in the field. Her pro-active w...
Working with Dagmara has been a great pleasure - she is a seasoned professional with extensive market knowledge on sustainable development as well as having a wide network of firms and specialists active in the field. Her pro-active way of working ensures the process moves ahead smoothly until results have been established. Great job!
Read more Read lessSustainability, ESG & Impact
I have worked with Dagmara on several sustainability and procurement hires. Dagmara showed to be very proactive, coming up with good candidates and proper profiling and background on all of them. Would work with her again any time!...
I have worked with Dagmara on several sustainability and procurement hires. Dagmara showed to be very proactive, coming up with good candidates and proper profiling and background on all of them. Would work with her again any time!
Chief Commercial Officer at Those ...
Dagmara is the most proactive recuiter I have ever worked with and supported me to secure my most recent role. Throughout the process she remained in touch and I felt that she genuinely cared about securing the right position for me t...
Dagmara is the most proactive recuiter I have ever worked with and supported me to secure my most recent role. Throughout the process she remained in touch and I felt that she genuinely cared about securing the right position for me that would also ensure I met my future career goals. I now have the pleasure of working with her again from a recruiting perspective and know that we are in good hands with her support.
Read more Read lessHead of Sustainability at Santande...
Dagmara was by far the best recruiter I worked with, in my recent job hunt. She demonstrated a genuine interest in my professional career and interests, she was present throughout the journey was always with a light touch. Dagmara was...
Dagmara was by far the best recruiter I worked with, in my recent job hunt. She demonstrated a genuine interest in my professional career and interests, she was present throughout the journey was always with a light touch. Dagmara was able to line up several interviews with very interesting companies within a short timeframe and was eager to negotiate the best deal for me. She did indeed help me find my next job and she has been a great support during the entire process. Thank you Dagmara: you are so good because you care.
Read more Read lessAssociate Director - Sustainabilit...
I owe to Anne one of the best moves in my career, as she was instrumental in hiring me into Amcor Flexibles. With a clear talent about screening the market over different countries, Anne had been able to "find" me on the recruitment m...
I owe to Anne one of the best moves in my career, as she was instrumental in hiring me into Amcor Flexibles. With a clear talent about screening the market over different countries, Anne had been able to "find" me on the recruitment market, and we had the opportunity to start a in-depth dialog about the specific requirements of the position she was recruiting for. Thanks to the quality of her insights, I was able to go through the recruitment process which led me to start in a new industry. Moreover, Anne acted as a true "candidate coach", willing to help candidates to understand the cultural aspects, and the potential roadblocks to overcome in the process. I remain very grateful for that. I consider Anne being most probably the best talent advisor I came to meet over the years.
Read more Read lessVice-President Operations EMEA at ...
Taunusanlage 8
60329 Frankfurt am Main
Germany
167-169 Great Portland Street
W1W 5PF London
United Kingdom
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