References: Who Has Worked with Sivan Kadosh and What They Said
Short answer: Eighteen people who worked with Sivan Kadosh wrote public recommendations for him on LinkedIn, eleven of them as his direct reports. All eighteen are republished here word for word, with each author’s name, current title, the date written, and a link to their own LinkedIn profile.
How to check this
Every recommendation below was written on LinkedIn by the person named, on the date shown, and is republished here word for word with nothing removed and nothing edited. Each name links to that person’s own LinkedIn profile, so you can confirm the person exists, holds the title stated, and worked where the recommendation says they worked. The originals sit on the Recommendations tab of Sivan Kadosh’s LinkedIn profile, which LinkedIn only shows to logged-in visitors, which is why the full text is published here.
What these references prove, and what they do not
They are first-hand accounts from named senior people who worked with Sivan Kadosh, most of them reporting to him directly, at Naxex and related companies in fintech and online trading. Sixteen were written in 2020, one in August 2021 and one in December 2022. They establish that he held CEO and VP Product roles, and how he operated in them. They are not accounts of fractional CPO engagements with B2B SaaS companies, and they are not recent. For the measured outcomes of the fractional work, see the case studies, where every figure is measured against the company’s own baseline and further client references are available on request.
“Sivan is a true leader and a passionate product strategist. I worked closely with him for 5 years, witnessing firsthand how he created and grew the company to hundreds of employees. His empathy and care for each one of us, from the junior QA to the executive management, won him great respect and followship, which continues to this day. Leading by example, empowering, mentoring, and growing his product teams, he created great product culture and set us Product Managers up for success. His vision and strategic direction enabled us to create successful products that brought millions of dollars of revenue to the company and its clients. I will always be grateful for having him as a friend and a mentor.”
Ivailo I., Lead Product Manager, 15 years in Enterprise B2B.
Written 14 December 2022, when Ivailo reported to Sivan Kadosh directly.
“Sivan was my direct manager for a few years. He was the CEO of the company (Naxex Tech) and at the same time managed the product team. As a product manager, I can say that Sivan is very professional – always looking deeply on the discussed feature to understand end to end its effect on the whole product, and as well the eager to understand what would be the added value to the strategy of the company. Nothing was added without a clear scope of development, a clear understanding of the business owner and a clear way to measure the success or failure of this feature. As people manager, Sivan has a unique approach to get to know and appreciate each and every one – both in the product team and in the company he was directing. I can say that until this day, Sivan’s name is mentioned in the company. It was my pleasure to work with you, Sivan, and to learn so much from you – until this day. Thank you!”
Ofer Salpeter, Senior Product Manager, Head of Product at Tiebreak Solutions.
Written 5 April 2020, when Ofer reported to Sivan Kadosh directly.
Profile: linkedin.com/in/ofer-salpeter
“Few people have the opportunity to work with a professional leader like Sivan. I had the pleasure of working with Sivan for 8 years in different companies. Sivan played two major roles at the same time as a CEO and VP Product at Naxex. As part of his role as VP Product, he identified creative ideas, developed sharp strategies and built the road map while focusing on customer experience and business needs. Any company would be lucky to have Sivan as a major part of her team.”
Danel Levy, CTO and Tech Leader, Fintech, Trading Systems, AI and Data.
Written 4 April 2020, when Danel reported to Sivan Kadosh directly.
Profile: linkedin.com/in/danel-levy
“I worked with Sivan for a few years and from my manager, that makes and helps me move to Sofia, he become a real friend. A great, knowledgeable, smart, inspirational and responsible manager, but last and extreamly important for me, person with big and honest heart. Thank you for what you are!”
Dobromir Stoev, Chief Technology Officer, Enterprise AI, Automation and Digital Transformation in Banking and Fintech.
Written 3 April 2020, when Dobromir reported to Sivan Kadosh directly.
Profile: linkedin.com/in/dobromir-stoev
“The leader shows you the simple way for goal achievement. Sivan also supports you and gives you an elegant executive push. With his guidance, the disaster recovery and change management processes became reality. Thank you, Sivan!”
Simona Petrova, Head of PMO at IG Soft, DevOps Manager.
Written 4 April 2020, when Sivan was senior to Simona but did not manage her directly.
Profile: linkedin.com/in/simona-petrova
“I had the pleasure to work with Sivan for couple of years when he was CEO of Naxex. He made me a good impression right on the interview, as opened and passionate CEO. During his leadership Naxex managed to gain lots of ground in Bulgaria and established as company. I value very much his straight to the point focus on issues and care about well being of his employees. This is typical characteristic of all good leaders – not to put distance between them and people. Doing so he was shoulder to shoulder with us in the trenches and that did pay off mutually.”
Georgi Rusev, Better Quality Through Intelligent Test Automation.
Written 28 May 2020, when Sivan was senior to Georgi but did not manage him directly.
Profile: linkedin.com/in/georgi-rusev
All eighteen recommendations
The six above are selected for relevance to product leadership. All eighteen are published here for completeness.
“Working with Sivan was a true blessing for me, he embodies the meaning of a leader – it’s someone who gives you wings and makes you feel ready to conquer the world. Sivan is a great professional and gives the maximum in each sphere of his life. I was so lucky to have met him at the beginning of my professional path – he gave me his imperative support and empowered me with self-belief which was a prerequisite for my growth.”
Mariela Yosifova, Senior HR Specialist, HR Technology Specialist, IT and Software Sector.
Written 16 August 2021, when Mariela reported to Sivan Kadosh directly.
Profile: linkedin.com/in/mariela-yosifova
“Had the opportunity to work with Sivan for 8 straight years, the added value he contributed in many areas of our work – was significant! It is kind of rare to have a person who has such a deep tech understanding, same time business minded, and above all – brings to the table revolutionary ideas of how to achieve your desires. Looking fwd to the day that our paths will come a cross once again.”
Liran Ben-Ari, Managing Director, Driving Growth in Financial Services and Online Trading.
Written 2 April 2020, when Liran worked with Sivan Kadosh on the same team.
Profile: linkedin.com/in/liran-ben-ari
“I had the opportunity and privilege to work with Sivan from 2014 through 2018. During this time I interfaced with Mr. Kadosh in the capacity of Database Team Leader, while Sivan’s role remained constant as a Chief Executive Officer. In each of my engagements with Sivan, he, myself and the teams involved were able to collaborate very effectively on the projects from start to finish. Sivan’s demeanor is thoughtful, attentive, calm and friendly, even under the most stressful of circumstances and working with the most difficult of people. I highly recommend Sivan Kadosh’s talent and expertise, as an individual and as a professional.”
Kostya Fridman, MS SQL Database Administrator at R2NET.
Written 2 April 2020, when Kostya reported to Sivan Kadosh directly.
Profile: linkedin.com/in/kostya-fridman
“Sivan is a treasure and an unforgettable leader. Very charismatic and down to earth person. Fair in his decisions with great business intuition and amazing sales skills. He naturally inspires everyone around him and successfully builds cohesive and high performing teams. It is a true pleasure to work with or under him, because you do not feel it like a work :)”
Dilyana Georgieva, Human Resources.
Written 8 May 2020, when Dilyana reported to Sivan Kadosh directly.
Profile: linkedin.com/in/dilyana-georgieva
“If I have ever had a Dream Work Experience, it was when I was part of Sivan’s team. As my direct manager, I used to report to him every Friday. It was the time when he was pouring me with energy, motivation, strength. I was leaving his office ready to conquer the world. We had good times and hard times, but with such an amazing person, beside me, everything is possible! The greatest boss and my dearest friend!”
Maria Spassova, Business Communications Manager.
Written 27 April 2020, when Maria reported to Sivan Kadosh directly.
Profile: linkedin.com/in/maria-spassova
“Sivan is the most down to earth and kind manager I’ve had to this day. He was the CEO as well as my direct manager for more than a year. As a CEO all I can say is that the people loved him. He has a warm vibe to his personality and everybody in the company felt that Sivan is their friend. As a direct manager, it was a true pleasure working with him. He gave me the freedom to make decisions, he is understanding and he knows how to get the best out of his team.”
Milena Filipova, UX/UI and Visual Designer, Digital Interfaces and Visual Storytelling.
Written 21 April 2020, when Milena reported to Sivan Kadosh directly.
Profile: linkedin.com/in/milena-filipova
“I had the honor to work with Sivan on a project for a year. We had a lot of hours of meetings together face to face and online. It always was a pleasure and super professional. Always super creative, thinking out of the box and dealing with complex issues. I had a great time and learned a lot! I am sure Sivan would give an enormous value for everyone.”
Yossi Melamed, CEO at Fast Lane Israel, Entrepreneur.
Written 7 April 2020, when Yossi was Sivan Kadosh’s supplier at Fast Lane Israel and Sivan was the client.
Profile: linkedin.com/in/yossi-melamed
“I had the honor to be managed by Sivan for 4 years. Sivan is very professional manager, highly motivated, Perfectionist that into all the details on each project. Sivan is not only great manager but also a great person that put the his employeed on the center.”
Moti Bengelsdorf, Senior QA Engineer at Tiebreak.
Written 2 April 2020, when Sivan was senior to Moti but did not manage him directly.
“Great professional!!! The best manager which every employee could have. With deep business and technical knowledge, but his greatest talent and asset is to lead people. He is able to create a team from any group of people with whom to fulfill all company goals. Always open-minded for innovations and good ideas. I learned a lot from him and I will be happy our professional paths to cross again.”
Hristo Hristov, QA Engineer at Codery.
Written 2 April 2020, when Sivan was senior to Hristo but did not manage him directly.
Profile: linkedin.com/in/hristo-hristov
“I had the chance to work with Sivan while he was in his role as a CEO of a growing technology company. He is a sound senior manager, paying attention of the details. He proved to be really good in balancing between management and technology people. His positive attitude and results oriented approach helped me a lot for building a robust infrastructure back then.”
Nikola Hadzhiivanov, IT Infrastructure Manager, 20+ Years Enterprise Experience, Microsoft 365 and Azure Expert.
Written 2 April 2020, when Sivan was senior to Nikola but did not manage him directly.
Profile: linkedin.com/in/nikola-hadzhiivanov
“One of my top influencer and mentor for almost 10 years. A true professional CEO and VP Product and more importantly a true friend! Thank you for being part of my business success journey and for many more years to come. Love you brother.”
Doron Benita, Driving Scalable Quality and Delivery.
Written 2 April 2020, when Doron reported to Sivan Kadosh directly.
Profile: linkedin.com/in/doron-benita
“I had the pleasure to be managed by Sivan a couple of years in highly demanding FinTech industry. He was amazing manager. Always putting people in the center. He is creative, highly intelligent, top performing professional, who is always building relationships and people.”
Borislava Georgieva, Connecting people, improving lives.
Written 2 April 2020, when Borislava reported to Sivan Kadosh directly.
Profile: linkedin.com/in/borislava-georgieva
Where the measured results are
These references establish that Sivan Kadosh held CEO and VP Product roles, and how he operated in them. For measured business outcomes from his fractional CPO engagements, see the case studies: Touchstay onboarding, Touchstay mobile, MarTech SaaS roadmap transformation, NAXEX web trading platform, and FX Financial Solutions CRM. Every figure in those case studies is measured against the company’s own baseline. The full set is at /case-studies/.