4,7
Because of the delay in receiving the residence card, we didn't know what to do next. Friends advised us to contact them. They explained everything to us in plain language and suggested options for speeding up the process. Thank you for the help!
About ONE PLUS
For over 10 years, we have been helping foreigners legalize their stay, handle documents, and open a business in Poland. During this time, we have guided thousands of clients from different countries — from the first consultation to receiving ready documents and successfully launching a business.
Every case is handled by a qualified specialist personally — we never pass cases to intermediaries. We interact with government authorities daily and monitor changes in legislation, finding effective solutions even in complex situations.
Over the years, we have employed over 8,000 foreigners and completed projects with a turnover exceeding 30 million zloty.
Our goal is not just to process paperwork, but to find the optimal solution for your specific situation: quickly, legally, and without unnecessary stress.
- Personal and professional approach to every client and case
- Full legal support from consultation to document receipt
- Guaranteed confidentiality and transparency at every stage
- Deep knowledge of Polish law and years of successful practice
30+ mln
Revenue in PLN
30+ mln
Revenue in PLN
Publicly available data
CheckYou can verify our company online and check the statistics yourself.
15.000+
Satisfied clients
15.000+
Satisfied clients
98% of our clients return for additional services and recommend us to their friends.
8 years
Сompany operation
8 years
Сompany operation
For many years, we have been helping foreigners and businesses in Poland.
12 years
Experience
12 years
Experience
You can be sure that certified experts are handling your case.
Meet us!
Trust, professionalism, and care for every client are the foundation of our work.
Our team consists of certified lawyers with Polish legal education and experience in legalization. Here you work with real specialists, not intermediaries or bloggers who resell someone else’s services.
We continuously monitor changes in legislation to always offer the most relevant and effective solution for your situation.
We value long-term relationships and strive to become a partner you can truly rely on.
That is why we approach every case with full responsibility and work until the result is achieved.
Tatiana Vyborna
Founder
A certified specialist in administrative and civil law, legalization of residence, and employment of foreign nationals in Poland. Tatiana graduated from the Faculty of Law at the University of Wrocław and Uniwersytet Ekonomiczny we Wrocławiu, successfully completing postgraduate studies in the legalization of residence and employment of foreign nationals.
With over 10 years of experience, including daily cooperation with government authorities and leading international companies, Tatiana has developed effective solutions that deliver fast results for her clients. She has represented the company’s and clients’ interests in over 20 inspections before state authorities — Straż Graniczna, Państwowa Inspekcja Pracy, Urząd Skarbowy, and ZUS — successfully defending their legal position. She offers clear legal consultations, helps gather the necessary documents, and provides support at every stage of the process.
Her individual approach and hands-on experience make legalization accessible to everyone seeking lawful integration into Polish society. She is fluent in English, Polish, Ukrainian, and Russian, and is currently learning Spanish.
Founder
12 years of legal practice
Tatiana Vyborna
Dmitry Kozlenkov
Operations Director
A certified specialist in business strategy, labor and administrative law, and IT solutions for companies entering the Polish market. Dmitry graduated from the Faculty of International Relations at the National University “Odessa Law Academy.”
Over the course of his career, he has accumulated extensive experience in HR process optimization, large-scale budget management, and the implementation of IT solutions — including CRM, ERP, and AI. He provides full support at every stage: from the initial consultation and business launch to representing clients’ interests before courts and government authorities. The strategic initiatives he has led have resulted in revenues exceeding 30 million PLN and the employment of over 8,000 foreign nationals.
His individual approach and commitment to continuous professional development allow him to offer practical recommendations tailored to the specifics of each project. Whether you are planning to establish a new company or grow an existing one, Dmitry will develop a strategy and select the right tools to make your business thrive in Poland. He is fluent in Polish, English, Ukrainian, and Russian.
Operations Director
8 years in business management
Dmitry Kozlenkov
The Story of ONE PLUS
Discover how the team has grown, adapted, and transformed over the years
2013
Dmitry’s Education
Dmitry begins his legal education at the National University “Odesa Law Academy” (Odesa, Ukraine).
2014
Tatiana’s Education
Tatiana enrolls at the Wroclaw University of Economics and Business (Wrocław, Poland) to pursue a European education.
2015
First experience
Dmitry and Tatiana begin their careers at a large international company, specializing in employment and legalization of foreigners.
2017
Advanced training
Tatiana completes specialized courses in the legalization of foreigners’ stay, deepening her knowledge in immigration law.
2018
Dual degree
Tatiana obtains a dual master’s degree from the University of Wrocław and the Wroclaw University of Economics and Business, strengthening her expertise.
2018
Founding of ONE PLUS
Based on the accumulated experience, the company ONE PLUS is established, specializing in employment and legalization of foreigners.
2019
Certificate of reliability
The company receives the “Rzetelna Firma” certificate, confirming its strong reputation and reliability.
2020
Client Trust
ONE PLUS is awarded the “Przedsiębiorstwo Godne Zaufania” certificate, further strengthening client trust.
2020
Strategic partnership
A partnership is established with Intercars S.A. to provide temporary employment agency services and legal support related to the legalization of foreigners.
2020-2022
Crises and growth
Despite the Covid-19 pandemic and the war in Ukraine, the company continues to grow thanks to a strong team.
2022
Leadership
ONE PLUS becomes a leading agency among its strategic partner’s network, having employed over 5,000 staff within 2 years.
2022
Tatiana’s PhD Studies
Tatiana completed her doctoral studies at the Faculty of Law of the University of Wrocław, specializing in the employment of foreigners.
2023
Successful clients
Over 10,000 clients have used our services — we’ve assisted with residence legalization and the processing of various legal documents.
2024
Financial success
The company’s total turnover exceeds 30 million PLN.
2025
Closure of division
Due to changes in the labor market, the company decides to close its employment division and initiate a global rebranding.
2025
Shift in focus
ONE PLUS specializes in comprehensive legal services for foreigners and business consultancy, marking a new chapter in its development.
Why choose us?
For over 10 years we have been helping foreigners and businesses across Poland. We know the requirements of inspectors that are not publicly available and how to achieve results.
Our specialists have extensive experience in the following areas of law:
Immigration Law
Legalization of stay, issuance of residence cards, visas, and work permits.
Civil Law
Drafting and legal analysis of contracts, comprehensive protection of rights in legal disputes.
Labor Law
Consultations on employment contracts, protection of employee and employer rights.
IT Lawyer
Legal support for IT businesses and freelancers, and assistance with digital projects.
Administrative Law
Interaction with government authorities, assistance in resolving administrative disputes.
Commercial Law
Business registration and support, contractual relations between companies.
Copyright Law
Protection of intellectual property, licensing, and regulatory compliance.
Criminal Law
Professional legal assistance in protecting clients’ rights and interests in complex criminal cases.
We strive to offer our clients effective and personalized solutions based on in-depth knowledge of Polish law and years of practical experience. With us, you gain not only legal support but also confidence in the successful resolution of your matters!
Our partners
Why we are recommended
We don’t talk about chances – we guarantee results- You work exclusively with certified lawyers and experts.
- Our specialists have verified legal education and many years of experience.
- Over 95% of our clients recommend us to others, confirming our reliability.
Google reviews
Client Reviews
Reviews about us on Google
Video reviews on YouTube
Client trust is the highest measure of our success
After a long wait for the residence card we started to worry, because we had to plan our next steps. We went for a consultation, where everything was explained and they suggested what to do in that situation. It's good that we managed to solve the problem.
We asked for advice about the residence card because we had questions about how long the documents take to be processed. They helped us understand the situation, explained what the options are for speeding up the process and what we can do next. I liked that they explained everything specifically and clearly, without unnecessary promises and complicated wording.
I contacted ONE PLUS about a Polish residence permit. I needed to sort out my documents and understand how to go through all the stages of the application correctly. I received legal advice, help with preparing the necessary documents and explanations about the next steps. Everything became much clearer; I didn't have to search through various sources myself. Thank you for the help and support.
This was my first application for permanent residence, so I had a lot of questions. The staff member calmly explained everything to me and helped me go through the whole process.
I moved to Poland and eventually decided to start preparing documents to obtain Polish citizenship. I contacted ONE PLUS and I was happy with the cooperation. They helped me choose the necessary documents, gave legal consultations and contacted the offices. I also received advice on legalization and help with sorting out documents in Poland. Everything went smoothly, problems were solved step by step, and I understood what to do at each stage. Thank you to the ONE PLUS team for the help and support!
If your residence permit application is stuck in limbo, I highly recommend this consultation. The session was direct, practical, and thorough. I left with a clear action plan and answers to all my questions. 10/10!
They helped me a lot with the documents. What I especially liked was that I could ask normal questions, even about small things, and get an answer.
Best of the best keep it up ONE PLUS
Thank you very much for the help in obtaining a criminal record certificate with an apostille. Everything went quickly and smoothly. I submitted the application on 6 September and received it on 6 October, already in Belarus.
Good service, response on time
They helped me with a notarial power of attorney in Wroclaw. All the necessary formalities were explained to me beforehand.
Hello! I am delighted with working with you. ONEPLUS is a great organisation for ordering duplicates of civil registry documents from Ukraine. They inform you about the stages of the order and complete the order quite quickly. Best regards!
I needed help with legalization and processing documents in Poland. I liked that they not only gave me a list of documents but explained the whole process in detail. After contacting them I felt much calmer because I understood the next steps.
I needed advice specifically about legalization in Poland. I received clear answers without complicated legal terms. They analysed my situation and explained the next steps.
I asked about documents that entitle me to stay in Poland. Everything was laid out clearly and explained in accessible language. I was happy with the consultation because I finally understood how to go through the procedure correctly.
Fast service and affordable
Help was needed with speeding up a case concerning a residence card. Specific information and guidance on the next steps were provided.
A well-coordinated team, professional work and normal communication. For me that is the most important thing when it comes to documents and legalization.
Thank you ONE PLUS for your help. Polish bureaucracy seems very complicated at first glance, but with good specialists everything becomes much simpler.
Clients from different countries
Our company provides comprehensive legal support for foreigners and businesses looking to legalize their stay or expand in Poland. We guide clients through every stage — from initial consultation and document preparation to communication with Polish institutions — ensuring full compliance, transparency, and efficiency throughout the process.
We specialize in residence permits, permanent stay, citizenship, business registration, PESEL and address registration, sworn translations, and other legal procedures. Our experienced team develops tailored solutions, adapting to each client’s needs — whether it’s individual immigration or cross-border business setup.
We also work with medium and large companies, supporting the legalization of foreign professionals and corporate relocation to Poland. Using innovative tools and legal precision, we help our clients reach their goals faster, build lasting partnerships, and operate with confidence in the Polish legal environment.
Documentation and certificates
Take a look at our certificates, diplomas, and recommendations
They trust us
Our clients
We support those who choose legality, transparency and confidence in migration matters
