Liberty Language Services is a full service agency providing total language solutions and language services to hospital systems, medical offices, legal firms, courts, public schools, federal, state and local government agencies, universities, private companies and more.


Liberty Language Services was founded to provide the highest quality language services at affordable prices. Liberty achieves these goals through comprehensive training and testing of interpreters, and by utilizing the latest technology to deploy those resources effectively.

We are honored to be a leading steward of the language services industry and as such, our promise is to continuously develop and improve upon our services. We do this to better our company and raise the bar of excellence for the entire industry.

Liberty Language Services contributes to communities by facilitating communication between two parties that wouldn’t understand each other without bridging that communication gap. Liberty is proud to be a company performing services that offer direct benefit to our society.


Our core capabilities include on-site, face-to-face interpretation services, over the phone interpretation, interpretation for telehealth visits, and video remote interpretation. We also offer written translation and American Sign Language (ASL) services.

At your service is a scheduling team ready to receive and fulfill requests 24 hours a day, 7 days a week. We offer unparalleled and quality services at an affordable cost.


We believe in the promise of freedom and equality embodied by the Constitution of the United States of America; we understand that this is a nation of immigrants and we believe immigrants continue to build this nation’s future. That is why we are proud to work with talented, professional multilinguals, from all backgrounds, who have a passion for bridging communication with their language and culture skills.​

We know that discrimination is a vile scourge that plagues most countries on Earth in one form or another. Only through mutual understanding can we overcome these societal challenges. Interpreters and translators play a critical role in erasing misunderstanding. The better trained and credentialed interpreters and translators are, the more effectively we can bridge that gap. Clear and accurate interpretation and translation are a critical need in every corner of our world.​

We hope you join us in this effort in thought and spirit, to nurture an environment of acceptance, peace, and love for all our neighbors.


Timothy T. Worster

Founder & CEO

A language access leader since 2008, Tim Worster sets standards that have raised the bar across the profession, working to make professional interpreting more affordable and streamlined, advocating for credentialing, and further professionalizing the field of interpretation and translation. He co-founded Liberty Language Services in 2011.

With a variety of business experience serving many industries for more than a decade, Worster has built a robust education center at Liberty Language Services and increased the professional profile of interpreters in Virginia and throughout the region and U.S.
He holds a Business Administration degree from Colorado Technical University; his wealth of knowledge in Information Technology makes him a strong asset to the industry. He served on the board of directors of the Virginia Interpreters and Translators Association (VITA) from February 2020 to February 2022, and collaborates with and supports many other industry organizations.

Shahela Sharmin

Owner & Co-Founder

When Shahela Sharmin immigrated to the United States in 1991, she saw firsthand the struggles immigrants face as they try to assimilate into our society. Her father and mother worked hard to provide their children with an education and the chance to make a better life for themselves. Sharmin co-founded Liberty Language Services in April 2011 with her husband Timothy Worster, to give back to her community and help immigrants like herself have a voice in the events that occur in their lives.

Beyond language services, Sharmin is a detail-oriented and self-motivated professional with more than ten years of experience in software quality assurance and software testing in various industries, projects, and environments. She specializes in SQL statements for backend testing and manual testing of client-server, standalone, and web-based applications on windows and UNIX platforms.

Sharmin earned a Bachelor of Science degree in Computer Science in 2004 from George Mason University. She also holds CompTIA Security+ Certification SY0-401 and has a security clearance of Active DOD Secret.

Sameh Abdelkader

Co-Founder & Education Director

Sameh Abdelkader, Director of Education, is the lead instructor for two medical interpreter training courses: the nationally recognized 40-hour Bridging the Gap (BTG) course and The Professional Medical Interpreter. Since 2012, Abdelkader has delivered the BTG course to over 1,000 students.

With 20 years of experience in education, Abdelkader brings strong skills in management, teaching, training, recruitment and cultural competency to our organization.

He holds a B.A. in English from Zagzig University in Sharkya, Egypt. In addition to being a licensed trainer for BTG and The Community Interpreter, he is also a licensed trainer for our legal interpreter training course The Language of Justice. As an educator and member of the IMIA, he adheres to the IMIA Educators Code of Ethics.

Abdelkader was the recipient of 2015 IMIA Distinction in Education Award.


Silvia Villacampa

Managing Director

Silvia Villacampa, Managing Director, has been part of Liberty Language Services since 2012, and has overseen the establishment of the largest pool of qualified and trained medical interpreters in the Washington, D.C. metropolitan area. Prior to joining the company, she was a freelance medical interpreter in the Washington, D.C. metro area and volunteered as a medical interpreter for the Arlington Free Clinic.

Villacampa has more than 20 years of bilingual English/Spanish experience at Federal health information centers such as the Office on Women’s Health, the HHS Office of Minority Health Resource Center and AIDS info, as well as with local and international health programs.

She has a Bachelor’s degree in International Affairs from the University of Mary Washington. She achieved national certification as a Certified Medical Interpreter in 2013. She also serves as editor of Liberty’s professional development online newsletter for interpreters.

Misti Houglum – SHRM-CP

Language Services Manager / Human Resources Manager

Misti Houglum is the Language Services Manager for Liberty Language Services. She started her position with Liberty as a part-time Scheduling Coordinator in 2014 and has since, worked her way to a management position where she works directly with Liberty staff, clients, and interpreters to ensure every service we provide meets high quality standards.

Prior to her work for Liberty, Houglum worked for a local domestic abuse shelter and prides herself in her abilities to listen attentively and help people resolve any issues they may face. Although her degree prepared her professionally to be an art teacher, she applies the knowledge she gained in college to help prepare and train interpreters to be the best they can be.

Houglum has a Bachelor of Science Degree in Art Education from South Dakota State University from 2013. She has also completed a Human Resources Management Certification course through George Mason University in 2020. She received her SHRM-CP (Society for Human Resource Management) – Certified Professional in February 2021.

Salar Raoufi

Salar Raoufi

IT Lead / Project Manager

Salar Raoufi serves as the IT Lead for Liberty and company-wide project manager. Raoufi is responsible for equipment and data security. He oversees the IT and technical component of OPI (Over the Phone Interpreting) and VRI services including mobile device management, and on-site visits for customer leased equipment in Northern Virginia and the Washington, D.C. metropolitan area. He completed a B.S. in Business IT from Virginia Tech and holds Scrum Master certification and Disciplined Agile Scrum Master certification.

Sydni Chernault

Sydni Chernault

Digital Marketing Specialist

Sydni Chernault is an award-winning videographer and experienced multimedia producer with a demonstrated history of working in the marketing and advertising industry. Skilled in digital strategy, brand management, videography, and more, she brings a media-focused mind to the Liberty team. Chernault has led successful branding campaigns with Samsung, Absolut, Johns Hopkins University, and Virginia Tech.

Emily Black

Emily Black

IT Associate

Emily Black serves as Liberty Language Services’ IT Business Analyst. She ensures seamless daily operations by troubleshooting employee hardware and software issues. Black’s commitment to finding innovative solutions and improving processes is a driving force for her. She consistently seeks opportunities to enhance the current system to optimize efficiency and facilitate a more streamlined approach for managing data. Her acute problem-solving skills have contributed significantly to the successful integration of the many systems that Liberty utilizes to facilitate the flow of data. Due to her strong work ethic and dedication to Liberty’s mission, Black has been a strong asset for advancing data management and data procedures.


Maria Teresa AOI Educator

Maria Teresa Buendia

Assistant Director of Education

Maria Teresa Buendia is the Assistant Director of our Education Department and is an interpreter trainer and certified healthcare interpreter (CHI) for Spanish/English and has held CHI Spanish certification since 2013. Buendia is a licensed instructor for Bridging the Gap and instructor for the training course Behavioral Health Interpreting developed by the Virginia Department of Behavioral Health and Developmental Services. She is an experienced video remote interpreter and, since 2020, has trained over 250 interpreters for remote video interpreting and telemedicine interpreting assignments.

Additionally, she developed new and updated language proficiency tests, including specialized tests for public schools, behavioral health, and medical settings. Buendia has a degree in microbiology from Universidad de Los Andes Bogotá, Colombia. In April 2021, she was a presenter at the annual Virginia Language Access Conference.

Erika Weld - Education Coordinator

Erika Weld

Education Coordinator

Erika Weld is the Education Coordinator at Liberty Langauge Services, where her contributions are important to the seamless operation of our Education Department. Within this capacity, Weld undertakes a diverse array of responsibilities aimed at facilitating educational endeavors and providing comprehensive support to students and staff alike. She diligently documents and monitors student progress throughout the duration of their courses, maintaining comprehensive records to track their advancement.


Abigail Hilton, Recruiter

Abigail Hilton

Recruiting Associate

Abigail Hilton is a multilingual, dedicated and highly motivated employee with exceptional organization, communication, and time management skills. She has strong worth ethic, adaptability and exceptional interpersonal skills and is adept at working effectively unsupervised and quickly mastering new skills. Hilton works well independently, as well as the ability to collaborate with others to handle assignments and always ready to go above and beyond.

Mariam Abdi

Mariam Abdi

Recruiting Associate

Mariam Abdi has been actively involved in conducting phone interviews and assessments to meet our high-volume recruiting needs. She has demonstrated exceptional communication skills and has been successful in building relationships with candidates, serving as their main point of contact throughout the recruitment process. In addition to her primary responsibilities, Abdi also provides support for recruiting-related events and projects as needed. Abdi takes great pleasure in connecting with potential candidates and providing them with the necessary information and assistance to make informed decisions about their career prospects. Her dedication and commitment to providing excellent support to candidates have greatly contributed to our successful hiring efforts.

Nomar Serrano

Nomar Serrano

Recruiting Associate

Nomar Serrano is a highly motivated and results-oriented professional with excellent organizational and communication skills. Prides myself in successfully leveraging data and insights to better predict and evaluate candidate fit.


Andrea Standifer

Andrea Standifer

Auditing Specialist

As an Audit Specialist, Andrea Standifer’s primary responsibility is to ensure the accuracy of payments and billing. Standifer collaborates with interpreters to address any payment concerns raised by clients and fosters exceptional service coordination with the Billing Department to ensure client satisfaction with invoices. Additionally, Standifer has undergone cross-training in the Scheduling Department, allowing her to provide support whenever required.

Devin Vice

Devin Vice

Credentialing Specialist

Devin Vice is a dynamic professional with a diverse background and a passion for making a difference. Vice quickly became a versatile asset, contributing expertise across various internal departments including Auditing, Translations, Scheduling, and Contracting. With over 4 years of experience as a Credentialing Specialist, Vice has demonstrated proficiency in leading and monitoring the credentialing process to ensure compliance with client requirements.  within the database and possesses strong analytical and problem-solving abilities. 

Stacy Weiss

Stacy Weiss

Lead Scheduling Coordinator

Stacy Weiss is a dedicated and experienced coordinator with a strong background in the language services industry. With over 5 years of experience, Stacy excels in scheduling clients’ needs with a diverse pool of interpreters, ensuring seamless communication channels for all parties involved. Weiss collaborates closely with various departments, including Recruiting, Education, Auditing, and Contracting, to address current needs, training requirements, voucher management, and interpreter allocations.