About Our Team - Process Service Company, Washington DC Process Server

About One Source Process Company

At One Source Process, we are proud to be a leader in the legal support services industry, offering reliable and efficient process serving and document authentication across all 50 U.S. states and territories. Headquartered in Washington, DC, with a nationwide network of over 2,000 experienced process servers, notaries, and couriers, we deliver fast and compliant legal services tailored to your needs.

Whether you’re an individual, law firm, or corporation, our goal is simple: to save you time and ensure your documents are served and processed accurately, securely, and without delay.

Comprehensive Legal Support Services Across the U.S.

We offer a wide range of legal process and document services, including:

Service of Process
Document Apostille & Legalization
Skip Tracing
Court Filing & Document Retrieval
Subpoena Preparation
Traveling Notary Services
Emergency & After-Hours Service

Our team is trained to handle even the most complex scenarios, such as accessing secured residential buildings or serving government agencies in high-security environments, especially throughout the DMV (DC, Maryland, and Virginia).

Our Advantage: Speed, Transparency, and Technology

Any Document, On Your Schedule
More than 2,000 experienced process servers, notaries, and couriers across all 50 states. Our professionals are available Monday to Friday, 8 AM–5 PM EST. Weekend appointments available upon request.
Streamlined Online Submissions
Easily upload your documents through our online request form — no complicated steps, no time wasted.
Upfront Pricing
We offer transparent and competitive pricing with no hidden fees.
Nationwide Coverage
From Los Angeles to New York, Houston to Miami, we serve clients in all 50 states and U.S. territories.

Advanced Technology for Legal Professionals

Our proprietary process serving software ensures real-time updates, photo and GPS tracking, and timely affidavit delivery. Legal professionals trust our technology to stay compliant, informed, and in control of every case — no more waiting or uncertainty.

Want to see it in action? Contact us today.

Dedicated to Excellence Since Day One

With years of experience and a reputation for professionalism, One Source Process remains the trusted choice for legal professionals, government agencies, and individuals seeking dependable legal process and document services. Every case receives our complete focus because we understand the importance of precision, efficiency, and trust.

Ready to Get Started?

Submit your documents today or reach out to our team for a personalized quote. We’re here to simplify your legal service needs — one document at a time.

📧 Email: info@onesourceprocess.com

Brandon Yoshimura

CEO

Brandon Yoshimura brings over 13 years of dedication and experience in the legal services industry to his role as Founder and CEO of One Source Process. Originally from the beautiful island of Oahu, Brandon moved to Washington, DC in 2008 and started the company in 2010. His visionary approach, centered around leveraging technology and enhancing efficiency, has propelled the company to the forefront of the industry. One Source Process, under Brandon’s astute leadership, has become a renowned entity, providing an array of services including process serving, mobile notary services, apostille, legalization, and diverse document solutions, all conveniently available under one umbrella.

Brandon currently heads the development and implementation of AI automation technologies in the legal services sector, ensuring that One Source Process stays ahead of the curve. His focus on integrating cutting-edge technology into traditional legal processes has not only streamlined operations but also significantly improved client satisfaction and turnaround times. This tech-forward approach is a testament to Brandon’s commitment to innovation and his understanding of the evolving needs of the industry.

Under Brandon’s leadership, One Source Process has not only expanded its service offerings but has also cultivated a reputation for reliability and excellence. His hands-on involvement in every aspect of the business, from client interactions to tech development, keeps the company grounded in its core values while continually reaching for new heights.

You can still catch Brandon answering inbound calls and live chats on our website from time to time. This direct involvement, even in day-to-day customer interactions, underscores his dedication to exceptional service and his commitment to staying connected with the needs of One Source Process clients. Brandon Yoshimura’s leadership at One Source Process perfectly blends innovative technology with a strong commitment to customer service. His hands-on approach ensures that the company not only stays ahead in technology but also remains deeply connected to its clients’ needs, setting One Source Process apart in the legal services industry.

Danny Koo

Director of Operations

Danny Koo, an accomplished professional with extensive expertise in government contracting, business administration, and sales, serves as a partner at One Source Process. Raised in Buenos Aires, Argentina, and fluent in both Spanish and Korean, Danny immigrated to Salt Lake City, Utah, as a child and later earned a BA in Economics from the University of Utah. He then moved to Washington, DC, where he met his wife, Natalie, and together, they are proud parents to their son Oscar and daughter Riley.

Since joining One Source Process in 2018, Danny has played a critical role in shaping the company’s future and strengthening its market leadership. His commitment to collaboration and customer satisfaction has helped secure multiple government contracts from state and federal agencies, further solidifying One Source Process’s reputation as a reliable service provider. Danny’s passion for snowboarding, traveling, and spending time with his family drives his work ethic and ability to connect with clients and colleagues alike, making him an essential figure in the company’s success.

Andrew Vita

Process Manager

Andrew Vita is the esteemed Service of Process Manager at One Source Process, a role he has held with distinction since 2015. With a career deeply rooted in the intricacies of legal process services, Andrew has been a cornerstone in the company’s growth and efficiency in serving legal documents and facilitating vital court procedures.

Since his start at One Source Process, Andrew has brought a wealth of knowledge and expertise to his position. His profound understanding of the legal system and its procedural nuances has been instrumental in ensuring the accuracy and timeliness of service processes, a critical component in the legal field. His leadership has not only streamlined operations within his department but has also set a benchmark for excellence in service delivery.

Under Andrew’s management, the Service of Process department has seen remarkable advancements. He has been pivotal in integrating technology with traditional service methods, significantly enhancing the efficiency and reliability of the service process. This integration has not only improved client satisfaction but has also positioned One Source Process as a leader in the industry.

Andrew’s dedication to his role is evident in his hands-on approach and his commitment to continuous learning and adaptation to the ever-evolving legal landscape. His ability to mentor and inspire his team has cultivated a work environment that values precision, professionalism, and a client-centered approach.

With nearly a decade of experience in the field, Andrew Vita remains a vital asset to One Source Process, continually driving the company towards excellence in legal process servicing. His unwavering commitment to quality and his extensive experience make him a respected figure in the industry and a key contributor to the success of One Source Process.

Nancy Rivera

Apostille Manager

Nancy Rivera, a confident and dedicated professional, serves as the manager for apostille and legalization services at One Source Process. Fluent in Spanish, she uses her extensive knowledge and expertise to ensure the smooth and efficient operation of this crucial aspect of the business. Born in Fairfax, Virginia, Nancy relocated to the DC region in 2010 and quickly became an integral member of the One Source Process team.

Nancy’s family is her top priority in her personal life, and she is deeply committed to their well-being and happiness. Her hobbies include swimming, learning new languages, and dance, reflecting her passion for personal growth and diverse interests. These pursuits not only enrich her life outside of work but also enhance her ability to connect with clients and colleagues from various backgrounds.

As a key figure in the company’s success, Nancy Rivera’s unwavering confidence and devotion to excellence have significantly enhanced the performance and reputation of One Source Process in the realm of apostille and legalization services.

Kim Giovennella

Accounts Payable

Kim Giovennella is a resourceful and innovative member of the Accounts Payable department at One Source Process, where she has been a vital asset since joining in 2020. Hailing from Long Beach, California, Kim brings a fresh perspective and a knack for creative problem-solving to her role, despite not having a traditional background in finance.

Kim’s journey to One Source Process is marked by her adaptability and eagerness to learn. Her diverse professional background, before entering the world of accounts payable, has endowed her with a unique set of skills and insights, which she has effectively applied in her current role. This versatility has been key in her ability to understand and navigate the complexities of payment management from a non-traditional viewpoint.

One of Kim’s most significant contributions has been her innovative approach to managing payments. Without a formal financial background, she has relied on her intuitive understanding of process efficiency and team dynamics. Kim pioneered a collaborative payment verification system that enhances cross-departmental communication and ensures a high degree of accuracy in payments. This system not only improved the efficiency of the accounts payable process but also fostered a more cohesive team environment.

Her ability to think outside the box and implement creative solutions has been instrumental in optimizing payment operations at One Source Process. Kim’s dedication to her role and her innovative approaches to problem-solving have made her an invaluable member of the team, showcasing that diverse experiences and perspectives can drive significant improvements in any professional setting.