Excellence lies at the intersection of experience and precision

Premium-level legal services

Excellence lies at the intersection of experience and precision

We transform complexity into strategy — and strategy into results.

ETERNIX is a full-service law firm providing foreign investors and international businesses in Ukraine with comprehensive, systematic, and strategically oriented legal support. We combine deep expertise in corporate and commercial law with practical solutions in regulatory compliance, KYC/AML, sanctions law, and export control, and advise on investments and M&A transactions at every stage — from structuring and legal due diligence to closing and post-closing support.

ETERNIX specializes in asset protection, the establishment of trust and corporate structures, and the representation of clients in litigation and arbitration in Ukraine, as well as in white-collar crime matters and business-focused criminal defence.

Our approach:
More Than Just Services

In our work with clients, we view our collaboration as a true partnership, rather than simply a formal provision of services. It is precisely this approach that allows us to find solutions that systematically build your reputation and ensure the stability of your business over the years. In fact, this is where we see our primary role and responsibility toward you.

Recruitment of Specialists

Over our many years of experience in the market, we have come to clearly understand exactly what needs to be taken into account when addressing legal issues across various areas of law. Our team consists of multidisciplinary professionals who are not limited to a single area of expertise and who consistently demonstrate their expertise in practice.

Recruitment of Specialists
Communication in Plain Language

We explain complex legal issues in simple terms, without unnecessary jargon, so that you clearly understand the essence of each decision and the next step

In-depth analysis and risk assessment

We thoroughly analyze each situation, identify critical issues, and propose solutions that minimize legal risks.

Complete confidentiality

Your data and any internal processes remain strictly protected. We adhere to privacy standards.

Expert Review
01
Business Protection, Auditing, and Crisis Management
This practice focuses on protecting businesses in the most challenging situations. In times of corporate conflicts, crises, or undue pressure from government agencies or third parties, it is important to have not just a lawyer, but a strong strategic partner. The ETERNIX Law Firm combines in-depth legal analysis with practical experience in conducting comprehensive audits and financial reviews, including at public-sector enterprises.
Specialists in the following fields:
02
Interaction with the Government
Defense of public officials, civil servants, and businesspeople in complex criminal proceedings in Ukraine and abroad.
Specialists in the following fields:
04
Investment funds / Private equity
05
Family offices
07
Military Law
08
Criminal Defense and International Law
10
Tax Disputes and Asset Protection
11
Support for Construction and Real Estate Activities
  • 01
    Business Protection, Auditing, and Crisis Management
  • 02
    Interaction with the Government
  • 03
    Intellectual Property
  • 04
    Investment funds / Private equity
  • 05
    Family offices
  • 06
    Public Procurement
  • 07
    Military Law
  • 08
    Criminal Defense and International Law
  • 09
    Customs Law
  • 10
    Tax Disputes and Asset Protection
  • 11
    Support for Construction and Real Estate Activities
01
Business Protection, Auditing, and Crisis Management
This practice focuses on protecting businesses in the most challenging situations. In times of corporate conflicts, crises, or undue pressure from government agencies or third parties, it is important to have not just a lawyer, but a strong strategic partner. The ETERNIX Law Firm combines in-depth legal analysis with practical experience in conducting comprehensive audits and financial reviews, including at public-sector enterprises.
Specialists in the following fields:
02
Interaction with the Government
Defense of public officials, civil servants, and businesspeople in complex criminal proceedings in Ukraine and abroad.
Specialists in the following fields:
04
Investment funds / Private equity
05
Family offices
07
Military Law
08
Criminal Defense and International Law
10
Tax Disputes and Asset Protection
11
Support for Construction and Real Estate Activities
Please leave your contact information, and we will get in touch with you shortly

Please leave your contact information, and we will get in touch with you shortly

We don’t just support your projects—we take on the entire scope of work: from risk analysis to clear, effective solutions. For us, every project is a challenge that inspires us to work with even greater precision, speed, and dedication. Let’s discuss how we can help you specifically

Team

Behind every victory is a team. We’ve combined our expertise in law, finance, strategy, and crisis management to find solutions where others see only problems

More about the experts
Oleksandr Romasiev
Managing Partner, Attorney
Oleksandr Romasiev
Vitaliy Chumak
Partner, Attorney
Vitaliy Chumak
Vadim Shtepura
Advisor
Vadim Shtepura
Dariia Lazareva
Attorney
Dariia Lazareva
Zhanna Shleychenko
Attorney
Zhanna Shleychenko
Victoria Gavrilkina
Attorney
Victoria Gavrilkina
Anastasia Kapustynska
Attorney
Anastasia Kapustynska
Diana Harbuz
Attorney
Diana Harbuz
Olga Piskun
Office Manager
Olga Piskun
Oleksandr Romasiev
Vitaliy Chumak
Vadim Shtepura
Dariia Lazareva
Zhanna Shleychenko
Victoria Gavrilkina
Anastasia Kapustynska
Diana Harbuz
Olga Piskun
90%

Customers come on the recommendation of others

Most of our new inquiries come from people who were referred to us by satisfied customers

Eternix News

Our experience is not just about the cases we handle, but also about the trust our clients place in us.
We build our defense systematically, logically, and effectively

View all articles

ETERNIX Law Firm continues to expand its international professional partnerships and participate in key international legal events

Dariia Lazareva
Dariia Lazareva

Reorganization of a Land Tenant: Is the Lease Agreement Terminated?

Жанна Шлейченко
Жанна Шлейченко

They Won't Accept “Old” Dollars: How Ukrainians Are Being Scammed at Currency Exchange Offices and What to Do

Anastasia Kapustynska
Anastasia Kapustynska

Law as a Foundation for Medicine

Oleksandr  Romasiev
Oleksandr Romasiev

A new cryptocurrency bill provides for preferential tax treatment and banking oversight of transactions

Oleksandr  Romasiev
Oleksandr Romasiev