People

At ENV, we’ve built a talented team with a reputation for designing solutions that work in the real world.

We know that the best projects are collaborative, and we make a point to listen, ask tough questions, and share insights along the way. Clients trust our principal-led teams to deliver projects on time, on budget, and as promised.

Jenny Le
Senior Technical Designer | New York, NY

As Senior Technical Designer, Jenny joined ENV with more than two decades of base building project experience ranging from Education to Commercial Interior to Residential project types. Impressed with her work ethnic and meticulous design detail, Jenny was recruited by her thesis professor to work in his modest mid-size firm in Hasting on Hudson, NY upon graduation. Since then, she has worked in all aspects of design, documentation, and construction phases on notable projects varying in size and complexity. Some of her past works are Scarsdale Elementary and High School gym and classroom additions, Dressbarn Headquarters office addition/renovation, Novartis Pharmaceutical Campus Master Plan, and JFK Riverwalk Residential Development.

Jenny’s passion and pursuit for design excellence and meticulous detail are evident in her work and personal life. At home, she has her hands full with the daily drama of a teenage boy and five-year old diva. While not managing her two kids and husband’s daily activities, Jenny enjoys local cuisine, traveling, and binging the latest K-Pop TV dramas.


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Jin Yoon
Project Designer | New York, NY

Jin embarked on her interior design journey in South Korea at an Art High School and graduated with an interior design degree from university. In the United States, she has developed a strong millwork background by drawing all aspects of commercial and residential construction.

Previous projects include NYU Langone Ambulatory Center, Northwell Health Peconic Bay Medical Center, Carleton College, and Temple University.

After receiving an advanced degree in sustainability from the New York School of Interior Design, ENV was a natural next step in her career. She is LEED AP BD+C certified and proficient with both AutoCAD and REVIT.

In her spare time, she loves to travel, cook, create art like pottery and spend time with family. She also makes it a point to not only practice sustainability in her work but also at home.


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Joseph Siegel
Principal | Englewood Cliffs, NJ

Joseph Siegel has more than forty years of experience in architecture and interior design projects involving over 20 million square feet of commercial space and buildings in excess of $750,000,000 in construction costs. During this time he has specialized in projects including; the design of new facilities, interior design and fit-out, rehabilitation and conversion of existing buildings, panning and feasibility studies, programming, operational analysis and project management.

Mr. Siegel has a proven track record with clients and builders in bringing projects from conceptualization through construction drawings to final tenant occupancy. Among his many skills is his proven history of establishing complete budgets, bringing the projects in within the projected cost estimates and completing them on or before the scheduled completion date, accommodating the individual client’s requirements.

Although, best known for his work on large projects with some of the most prestigious corporate clients in the country. Mr. Siegel’s experience also includes work on projects of limited scope, which are handled with the same dedication to detail and professionalism. This approach has brought many clients back with new projects over the years.

As the driving force behind Design Collaborative Architecture and Planning, Joseph Siegel has honed a team of talented architects and design professionals who adapt seamlessly to provide quality architectural and design services for a range of client requirements. He has a hands-on approach, interacting continuously with the project managers throughout each phase of a project. Mr. Siegel attended New York Institute of Design and Construction and Pratt Institute in Brooklyn, New York.


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Julia Parisi
Architectural Designer | Englewood Cliffs, NJ

Julia graduated from New Jersey Institute of Technology with a Bachelor in Architecture and minor in applied mathematics. At NJIT, she was on the AIAS Board of Directors managing the print room service offered to students on campus.

Julia started interning at ENV in November 2021. She joined the team full time in June 2023. At ENV, she assists on academic, residential, and commercial projects.

In her free time, she enjoys traveling, paint, and go to concerts.


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Keri Hart Opp
Project Designer | New York, NY

Keri took the ‘Goldilocks’ route to her position at ENV. She grew up in Vermont, and after graduating from Endicott College in Massachusetts with her degree in Interior Design, she tried out a variety of jobs and homes before finding the perfect fit here.

She spent many years working in Connecticut designing millwork and display for luxury retail environments, but took a break in the middle to try out life in Kansas City working at a home design boutique.

Then she sampled the famed southern hospitality in Louisiana for a bit while working as a home decor and furniture salesperson, but that wasn’t quite right either. So eventually, like Goldilocks, she found her way to a project designer position at ENV, which she thinks is juuuuuust right.

When she isn’t surrounded by material samples or creating 3D models and renderings for her projects at ENV, Keri spends her time lounging with her 60 pound lapdogs, visiting her large and rowdy extended family, executing a plethora of home improvement and DIY projects, baking cupcakes, and counteracting the cupcakes with activities like yoga, hiking, downhill skiing, and coed kickball.

She dreams of getting her pilots license and a seaplane someday, and plans to frequently add to the list of 17 countries and 34 states that she has visited so far.


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Khanh Ly
Interior Designer | Richmond, VA

Khanh earned her Bachelor of Art degree in Interior Design from Virginia Commonwealth University in 2025. Born and raised in Richmond, VA, she is passionate about local projects and uplifting the community. She enjoys spatial problem solving and is always eager to learn through diverse experiences.

Growing up in a small business household, her family has inspired her work ethic and spirit of resilience. Khanh focuses on honing her design thinking and strategies to improve the lives around her through thoughtful and rigorous work.

Outside of work she enjoys creative hobbies, tinkering with technology, spending time with her dogs, and staying active. Khanh believes life should be an ongoing journey to explore the world around her, whether through food, local events, or enjoying nature.


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Kimberly Lloyd
Project Designer | Richmond, VA

Born and raised in the Roanoke Valley, Kimberly made her way to Richmond to pursue her degree in Interior Design from Virginia Commonwealth University. She has called Richmond her home ever since. Kimberly is a Certified Interior Designer and a LEED Accredited Professional.

Working for over a decade in commercial interior design, her experience includes Corporate Interiors, Historic Renovation and Adaptive Reuse, Multi-family Housing, and Higher Education. She works closely with her clients to accurately assess their needs, anticipates future accommodations, and uses that knowledge along with industry trends to create inspirational and functional spaces. Kimberly’s keen eye for precision and graphic skills are her greatest strengths and contribute importantly to each project’s success.

Kimberly and her husband are parents to two busy preschoolers and a golden retriever. They enjoy VCU basketball, summer evenings at the pool, and socializing with their friends in the city’s Near West End.


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Kristina G. Musni
Project Director | Los Angeles, CA

Kristina enjoys the team chemistry among colleagues here at ENV as well as the constant output of creativity and innovation for clients. She is an actual Los Angeles native (yes, they exist) who bleeds Dodgers blue and Lakers purple.

Besides her hometown sports teams, her favorite thing about LA is the diversity of cuisines and the ever evolving restaurant landscape throughout the city.  Friends and colleagues alike know that Kristina is the person to ask when in need of a restaurant recommendation.

She’s also the best person to go to when trying to plan a night out.  A music aficionado and trained dancer, Kristina can point you to any number of venues, lounges, bars that LA has to offer.  When not out discovering new things in her beloved city, Kristina loves spending time with her family, reading novels and watching past seasons of all the best 90s TV shows. How YOU doin’?


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Laura Marcus-Plant
Principal | Richmond, VA

Laura is a certified interior designer and Virginia native who graduated from Virginia Commonwealth University with a BFA in Interior Design. After working in Washington, DC with a portfolio of federal and corporate clients, she moved to New York City where she served as an Associate Interior Designer for a decade at an internationally renowned firm.

Laura honed a deep expertise in workplace design through projects for Fortune 500 companies in the international banking, fashion, advertising, and corporate sectors. She received national and international awards for design excellence, and served on the Board of Directors for the New York Office of Professions for Interior Designers.

Laura is recognized for her strengths in space planning and building analytics, and frequently consults with companies seeking to make wise real estate decisions. Now Laura brings over 25+ years of experience to co-leading ENV’s Richmond, Virginia office.


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Louis Cespedes
Project Director | New York, NY

Louis is a native of New York City and a graduate of Pratt Institute School of Architecture. Trained as a painter, his knowledge of fine-arts and history form the foundations of his architectural thinking. His professional and personal focus has always been on problem solving both in arts as well as in building, with a unique focus on craft.

As a child, he worked alongside his step-father in body shops fixing crashed automobiles. As an architect, he has practiced architecture in Vienna and most recently in Mexico before returning to New York.

Initially, after completing his studies, he began working in the public sector for the New York City Housing Authority and later he joined the private sector firm of Skidmore Owings and Merrill before setting off to travel around Europe, eventually ending up in Mexico where he lived for 10 years.

In the Americas, he’s traveled to Peru, Haiti, Cuba, Dominican Republic, and Puerto Rico. These travels and professional experiences inform his perception of practice and his simple approach to practical management and creative solutions.

Louis is an avid history buff, and news junkie, and is constantly thinking and finding motivation in the every-day. He is also a competitor and a do-it-yourselfer. In his spare time, he participates in amateur Triathlon events. He’s completed several half-distance events in Syracuse and Quassy as well as yearly participation in the New York City Tri. During the off-season, his favorite pastime is doing small construction and home-improvement projects.


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Lucas Koch
Architectural Designer | Englewood Cliffs, NJ

Lucas graduated from New Jersey Institute of Technology (NJIT) with a Bachelor of Architecture and a minor in environmental studies and sustainability. At school Lucas was a student in the Albert Dorman Honors College which helped him further develop his educational goals by pushing him to excel in various levels of schoolwork.

Lucas has been with ENV since 2011 as an intern and recently joined full time in May 2017 as an Architectural Designer working on academic, residential, and commercial projects. He plans to begin studying for the Architectural Registration Exam in the near future with continued plans to become LEED and Passive House Certified.

In his spare time, he enjoys operating and maintaining a public garden railway (LBI Railway) and working on his Dodge Challenger.


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Maddie Bizik
Architectural Designer | Englewood Cliffs, NJ

Maddie graduated from Tulane University in 2020 with a Bachelor’s of Science in Architecture and a Bachelor’s of Arts in Environmental Studies. She graduated from Parsons School of Design with a Master’s of Architecture in 2022. She joined ENV in 2024 and has since been working closely on multiple academic and municipal projects.

Maddie’s previous experience in restoration architecture has provided her with a unique perspective and understanding of architectural practices. She hopes to continue exploring the intersections of history, architecture, and the environment as she pursues her license. 

In her free time, Maddie enjoys painting, reading and traveling. 


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Marcel Jaloveckas
Senior Job Captain | Englewood Cliffs, NJ

Marcel has a five-year degree in Architecture from the City College of New York. Marcel has experience in a variety of projects from large scale to small scale. Project experience includes renovations to museums, renovation, and addition to high-end residential and multiple high-end retail stores in locations around the US.

In his free time, Marcel enjoys woodworking, cooking, and spending time with friends and family.


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Marco Erdenberger
Architectural Designer | Englewood Cliffs, NJ

Marco is a graduate of NJIT where he received his bachelor in architecture. His love for design as a whole is not only expressed through architecture but has translated into his free time by practicing photography, digital and industrial design.

Catch Marco on the weekend in NYC at a cafe doing work, or strolling through art exhibits.


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Maria Pereira
Associate Principal | Englewood Cliffs, NJ

Maria holds a Bachelor of Architecture degree from New Jersey Institute of Technology and has over 20 years of experience in the design, construction, and renovation of educational, religious, and municipal facilities.

Maria has experience in the rehabilitation of existing facilities, including historic educational, municipal and religious buildings. She has extensive experience in surveying of existing conditions as well as conducting conditions assessment surveys.

At ENV, Maria has been responsible for compiling Conditions Assessment Reports, project planning and implementing the corresponding renovation and rehabilitation facility upgrades and new construction projects from design through construction.


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Mark Giessen
Associate Principal | Englewood Cliffs, NJ

Mark holds a Bachelor of Architecture degree from New Jersey Institute of Technology and offers more than 13 years of experience. At ENV, Mark is responsible for project management, client contact, design, document coordination and construction administration.

He has been involved in a variety of projects in the academic, hospitality, retail, residential and municipal sectors. Mark is instrumental in the company’s sustainability efforts, having led the project teams for numerous LEED projects including NY Foundling- Mott Haven Charter School and the Delaware Travel Plaza.


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Martina Hanna
Interior Designer | Englewood Cliffs, NJ

Martina Hanna holds a Bachelor of Arts in Interior Design from New Jersey Institute of Technology (NJIT). She joined ENV’s Interior Design team in 2024 and has since contributed to workplace, academic, and commercial projects.

Her design approach blends creativity with strategic problem-solving, focusing on creating functional, engaging spaces that support how people work, learn and interact. She is continually expanding her expertise and plans to pursue her NCIDQ certification.

Outside the studio, Martina enjoys traveling, reading, and painting.


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Maryana Sverdlova
Controller | Englewood Cliffs, NJ

Maryana has over 30 years of Accounting and Financial Management experience. She holds degrees in Economics and Accounting from Odessa’s University of National Economy in Ukraine. Maryana has been working in the A/I/E industry since 1997 and is responsible for all financial and human resources activities.


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