Founder and Principal

Gerald Fink, PE & LEED AP

Gerald Fink exemplifies the modern engineer; practical, clever, and grounded in real world application. After making his name at Kling Lindquist, Jerry managed the Philadelphia office for the Boston-based RG Vanderweil in the mid-nineties. Realizing he had more to offer his clients, Jerry started his own company in 2000, bringing 30 years of engineering experience to his new firm. Since AEI’s inception, Jerry has led the company to become one of the leading names for MEP/FP engineering in the Philadelphia area. Through practical systems, smart solutions, and a genuine understanding of the client’s needs, Jerry has earned excellent reviews from architects, building owners, and project managers alike. He is known for recognizing the importance of client understanding and articulating his resourceful solutions to all of those working on the project. Jerry brings a real-world understanding to each project, having renovated several historic office buildings and homes of his own. He understands the value of money and creates systems that strive to eliminate both economic and energy waste. He has worked on a diverse variety of projects all across the Mid-Atlantic area, providing his expertise in master planning, design, and construction.


Derek Fink, PE & LEED BD+C

Derek is an eager and motivated mechanical engineer with diverse consulting engineering experience and a gift for relating and connecting with clients. After graduating from Drexel University with a Bachelor of Science in Mechanical Engineering (BSME) in 2007, Derek entered into the MEP consulting engineering field with McHugh Engineering Associates Inc. During his 7 years with the firm, Derek honed experience in mechanical and plumbing design, project management, construction administration, and commissioning through an expansive portfolio of projects. Additionally, Derek was involved in energy modeling, geothermal design, and the LEED commissioning process. Derek’s philosophy aligns with AEI’s commitment to provide cost effective, practical and sustainable designs pursuant to the client’s needs. Much like Jerry, Derek’s hand-on approach allows him to understand not only the theory behind the mechanical and plumbing systems used in the building trade industry, but also the installation and ongoing operations of these systems. His experience with energy management systems has helped clients with installation and commissioning of mechanical systems. His expertise also supports conversions and retro-commissioning of existing systems. Derek brings a fresh, progressive energy to AEI, offering inspired solutions and a keen perspective.

Senior Electrical Engineer

Tim Lewis

Timothy W. Lewis is a knowledgeable engineer with over thirty years of Engineering and Project Management experience in the building and marine construction in both the public and private sectors.  Tim enjoys engineering design and sees himself as a problem solver. Tim has designed electrical systems for a wide range of projects in different industries, including commercial, educational, industrial, pharmaceutical, healthcare, and transportation.  This broad experience enables him to understand and develop appropriate engineering alternatives to meet the requisite needs of the project with a focus on safety and energy efficiency.  He has performed electrical engineering studies including Short Circuit Analysis, and Arc Flash Reports. His design experience includes Medium and Low Voltage Power Distribution, Mission Critical projects utilizing multiple emergency generators, and uninterruptible power supplies for Control and Data Centers.  Tim also loves to show his artistic flair in lighting designs for signature and historic sites.

Plumbing and Fire Protection Designer

Joel Redinger, LEED AP

Joel Redinger joined AEI in 2003 upon receiving his Associates Degree in Engineering Technology. He also achieved his LEED accreditation and is a member of the American Society of Plumbing Engineers and NFPA. Joel’s responsibilities include plumbing and fire protection design, as well as project management. He has experience in a wide range of projects, including restaurants/commercial kitchens, residential, student housing, laboratories, data centers, and educational facilities.

CAD Technician

Joan Fagan

Joan Fagan joined AEI’s team in 2015. She brings 35 years of MEP and FP CAD operation experience. She specializes in electrical work. Joan attended the American Institute of Drafting in Philadelphia.

Senior Electrical Designer

Drew Farnsworth

Drew has completed hundreds of critical systems projects for Fortune 500 companies over the course of a 15 year career. He has experience with uninterruptible power systems, N+N distribution and redundant generator systems. In the past ten years, he has undertaken numerous investigations into data center growth and reliability plans as well as designing electrical and HVAC systems in the data center arena. He has been featured as a speaker at AFCOM, Bisnow and 7×24 events. As a programmer, he has created automated CAD systems for a half-dozen companies. Prior to working in MEP design he worked as a coder and was involved in programming the ERP solution for a major US hospital system.

Mechanical Engineer

Lauren Abercrombie

Lauren is a hardworking and skilled mechanical engineer with diverse consulting engineering experience. After graduating from Drexel University with a Bachelor of Science in Mechanical Engineering in 2016, Lauren has worked in the MEP consulting engineering industry gaining experience in mechanical design for pharmaceutical and healthcare facilities, and commercial buildings through a large portfolio of projects. Additionally, she has performed several energy studies with the goal to provide clients with effective and practical solutions to save energy while operating large mechanical plants for campuses and manufacturing facilities.

Senior Electrical Designer

Rod Harris

Rod Harris’ experience in the consulting engineering field includes pharmaceutical, higher education, hospital, commercial, and multi-family dwellings. His education includes a drafting certificate from Spring Garden College and degrees from Montgomery Community College and Cheyney University. Among his career achievements are; lead designer for CEVA’s 55,000 square foot innovative technology and automated system building, Johnson and Johnson Campus Fire Alarm system up-grade, and Walnut Street Commons multi-family dwelling. In addition to his electrical design skills, one of Rod’s greatest attributes is being a team player. His willingness to go roll his sleeves up and pitch in where needed is a great asset.

Senior Mechanical Designer

Anthony Chiarlone

Tony brings AEI more than 30 years of experience in HVAC drafting and design. He has seen projects through from concept design to construction administration. He has worked on multi- family housing, schools (K-12), libraries, correctional facilities, health care facilities, office buildings, office area fit-outs, mechanical system upgrades in existing facilities, restaurants, high-rise student housing, apartments, and retail complexes. These efforts include both new and retrofit designs.

Executive Assistant/Office Manager

Lori Koncos

Lori joined AEI in 2019 and has over 15 years of office administrative experience in manufacturing, retail, consulting, and pharmaceutical industries.

Rachel Kingsmill

Rachel Kingsmill joined AEI in 2019. She has a Bachelor’s Degree in Civil Engineering with a concentration in Construction Management. She brings to the team 20 years of construction administration experience from a wide variety of projects, including healthcare, large scale housing, educational facilities, casinos, and public transportation infrastructure.

Mechanical Designer

Emirhan Emiroglu

Emirhan came to AEI from Turkey with 6 years of project design and management experience in HVAC, plumbing, and fire protection. He has designed projects in Turkey, the Middle East, Africa and Russian territories. His experience includes various industries such as high- and low-rise residential, commercial, industrial, educational, healthcare facilities, hotels, shopping malls, and administrative buildings. He took part as one of the design managers in Turkey’s biggest combined residential and commercial project. His experience in international project design has given him the ability to design mechanical projects in different climates and cultural conditions.