About us

H-X Technologies started out as an independent team of cybersecurity professionals. Gradually, we have grown to the level of an international managed security service provider (MSSP). High qualifications, flexibility, and reliability are our selling points.

Find out more about us and meet our leaders.

Company management
Andrew Buldyzhov
Chief Information Officer
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Dennis Kudin
ISO 27001 Senior Lead Auditor, ISA/CFS
Chief Information Security Officer
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Vladimir Buldyzhov
CISSP, ISO 27001 Implementation
Chief Executive Officer
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Mykhailo Klymchuk, PhD
Project Manager
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Mykhailo Stepanov
CRTP
Lead Auditor
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What makes us different
1
Maximum benefit for any client

Quality service should be available to everyone. That’s why, from large projects to small tasks, we select a solution for any budget, up to free services. Before we start work, we scrutinize the needs of each client. All parameters are fixed in clear and transparent project documentation: you know in advance what you get and what you pay for. We adhere to SLA principles not only in external but also in internal processes.

2
International certificates and independent assessment

Our expertise and experience are officially confirmed. H-X professionals hold international certifications such as CISSP, OSCP, OSEP, CEH, ISO 27001 and more. Behind each is a high bar of qualifications and a commitment to follow strict professional and ethical standards. At all key stages of our work, we carry out independent quality checks and assessments. This helps us remain objective and maintain a truly trustworthy level.

3
A culture of continuous improvement

Excellence is not a goal, but a process. That is why we are constantly improving our approaches to quality, testing new ideas and being open to change. In our work, we rely on proven global methodologies such as Kaizen and the Deming cycle (PDCA). Our goals are always SMART — specific, measurable, realistic and with clear deadlines. We encourage feedback: constructive criticism helps us to grow, and mistakes help us to learn rather than find fault. This culture helps us to improve the quality of our results.

4
Reliability is not in words, but in actions

We build any relationship on responsibility. For us, this is not just a nice word, but a key principle. We strictly require our team to comply with laws, professional standards and codes of ethics. Our professionals personally sign your confidentiality and liability commitment forms. We respect the interests of not only clients and partners, but also anyone who may be affected by the process or results of our work. This level of reliability is hard to expect from freelancers, bug bounty platforms or our smaller competitors.

5
Experience proven by time and real projects

We’ve been in the profession since 1998 — and since then, we’ve gone from the first local tasks to international projects in a wide range of sectors. Heavy industry, automotive, medicine, fintech, retail, SaaS, blockchain – we have worked and are working where security is truly critical. Read our real cases of solving complex problems, building defenses from scratch and closing serious vulnerabilities for various companies. The geography of our clients spans dozens of countries, and behind every project is a team that knows what it’s doing.

6
Freedom, trust and growth within the team

We are a Teal company. We have a flexible hierarchy and decisions are made where there is expertise, not just a position. Staff and interns choose their own tasks, take responsibility and see the real impact of their work. We have created a comfortable environment where one can grow professionally and personally. Sharing experience, mentoring, developing young professionals — for us, this is not a formality, but part of the culture. Our employees are passionate about their work. This benefits everyone, including our customers.

Certificates