In the paper, a scientific study of the administrative and legal foundations of public service organization in the authorities of the State Border Guard Service of Ukraine was conducted. The scientific article states that public service in the authorities of the State Border Guard Service of Ukraine is a special type of public service - the so-called "public service in law enforcement agencies" and has as general features of public service inherent in all types of public service in general and service in law enforcement agencies in particular, as well as specific ones, inherent only to the public service in the authorities of the State Border Guard Service of Ukraine. The authors came to the conclusion that public service in the authorities of the State Border Guard Service of Ukraine has the following features: military character; special law enforcement purpose; relations with the participation of the personnel of the authorities of the State Border Guard Service of Ukraine are implemented for the purpose of protecting and protecting the interests of society and the state, therefore, by their nature, they are not only managerial, but also protective and protective relations of a power-subordination nature; are implemented, if necessary, with the help of legal coercion and even by using special means and weapons, since their objects are the most significant interests of society and the state; the official powers of the personnel of the authorities of the State Border Guard Service of Ukraine are embodied in specific legal relations in the process of observing the principles and implementing measures of the border policy; a clearer system of legislation regarding the regulation of this type of service, primarily represented by the regulatory acts of the Ministry of Internal Affairs of Ukraine; the presence in the structure of both units that directly carry out the tasks of protecting and protecting the state border (state border protection bodies, border service departments, etc.), and bodies that primarily have control and management functions (the Administration of the State Border Guard Service of Ukraine, regional offices).

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In the scientific article the author conducted a scientific review of the legislative and doctrinal foundations of the definition of «public service», the formation on this basis of its own definition of public service, its content and defining features. It is determined that the main criteria for determining public service, its separation from corporate and public services is: implementation as a result of relevant employment of persons holding relevant positions in the structures of the state and municipal sector tasks and functions of the state and local governments; regulation of the content and features of such activities by the Constitution of Ukraine and laws of Ukraine (they cannot be regulated by an act of corporate formation or public organization, and local regulation of public service is of a secondary nature). Based on the above research on the legal and doctrinal basis of the definition of «public service», the author notes that the concept of «public service» in its essence is broader than the term «civil service»: if the civil service includes administrative and specialized service , including service in law enforcement agencies and military formations, the public service additionally includes service in political, including elected positions, service in corporate formations and public formations, subject to the delegation of powers of state bodies or local self-government bodies in accordance with the provisions of the laws of Ukraine. Considering the concept of public service can be defined as a specific activity of political and administrative entities, within which the implementation of tasks and functions of a public nature, ie those concerning the rights and interests of the community - the population of the state, administrative-territorial unit, a certain social group or territorial community, which is carried out on the basis of financing the relevant activities from the state or local budget; public service, except political, carried out on a professional and politically neutral basis, its formation takes place on the basis of an administrative act of appointment or election.

In the paper the study of the legal basis of applying to court in the interests of other persons of public authorities and officials and their participation in cases of offenses related to corruption committed by public officials is done. Such subjects are the Human Rights Commissioner of the Verkhovna Rada of Ukraine, the prosecutor and the National Agency for the Prevention of Corruption, for matters of representation of the interests of other persons in cases of offenses related to corruption committed by public officials, such bodies are the Specialized Anti-Corruption Prosecutor's Office and National Agency for the Prevention of Corruption. The authors came to the conclusion that the representation of the interests of a citizen or the state in court in cases provided for by the Law of Ukraine "On the Prosecutor's Office" and related to corruption or corruption-related offenses, as well as the representation within the limits of its competence of the interests of the state in cases of recognition as unfounded assets and their collection into state income is carried out by the Specialized Anti-Corruption Prosecutor's Office. The status of the National Agency for the Prevention of Corruption in legal relations regarding the representation of the interests of other persons is dual (dualistic) – on the one hand, it carries out an administrative investigation, that is, proceedings in cases of offenses related to corruption at the first stage, on the other hand, the agency has the right to apply to the court with a lawsuit (statement) in the interests of the whistleblower, to participate in the consideration of cases based on such lawsuits (statements), as well as at any stage of the proceedings to enter into a case in which proceedings are opened based on the lawsuits (statements) of whistleblowers, to file an appeal, cassation complaint, an application for review of a court decision based on newly discovered or exceptional circumstances, including in a case in which the proceedings were opened based on the claim (statement) of the whistleblower. In addition, the National Agency for the Prevention of Corruption may actually act in the interests of the state, contesting in the appeal or cassation procedure the decisions made in administrative lawsuits to recognize the decisions of the National Agency as illegal.