Our Team of Senior Consultants

BioTechLogic’s highly skilled professionals work alongside your staff and resources throughout the course of your project. We blend as teammates into your organization; we not only serve as the technical expert and consultant, but also provide hands-on leadership to drive and successfully execute the plan.

David Fetterolf

David Fetterolf has more than 20 years of experience in the biopharmaceutical industry. He has held process development, manufacturing and validation positions at Covance Biotechnology Services, Diosynth (Akzo Nobel), Pharmacia and Pfizer, where he managed API and Drug Product manufacturing technologies, technology relocation and scale-up, validation, and product supply chains at internal and third-party manufacturing sites. He holds a B.S. in Chemical Engineering from Pennsylvania State University and an M.B.A. from Elon University.

Julie Spyrison

Julie Spyrison joined BioTechLogic in 2004 with a focus on CMC Regulatory and Project Management activities.  Julie has over 20 years of experience in the biopharmaceutical industry.  As part of the BioTechLogic team, Julie is responsible for managing CMC Regulatory submission projects and preparation of CMC documentation.  As part of the dossier preparation and its lifecycle management, Julie performs source document gap analyses, prepares Agency briefing packages, prepares Module 2.3 and Module 3 CTD sections, authors responses to Agency questions, facilitates the electronic publishing process, and evaluates change control requests post-dossier submission for Regulatory impact.  Julie also provides clients with project management support for multiple Drug Substance and Drug Product technologies. Responsibilities include management of activities associated with the Drug Substance and Drug Product contract manufacturing sites, process scale-up and technology transfer, process validation, regulatory submission packages, and global regulatory inspection readiness.  Previously, she was a project manager at Integrated Project Management Company, Inc. During her tenure there she managed projects at Searle, Pharmacia and Pfizer, related to business process improvement initiatives and program management of product development projects, including deliverables related to Drug Substance and Drug Product manufacturing, analytical technology development, and preparation of CMC regulatory submissions.  She holds a B.S. in Chemical Engineering from Northwestern University.



Rachel Houp has over 20 years of experience in the biopharmaceutical industry. Her responsibilities at BioTechLogic include validation, preparation of CMC regulatory documentation submissions, quality assurance and project management support. Rachel has also gained experience in equipment qualifications. Her specialties include Process Validation over the lifecycle of the process/product, support validations and IND, IMPD, BLA, MAA and PAS CMC submissions in the CTD format. Previously, she held positions in quality assurance, validation, small scale cell culture manufacturing and QC testing at Human Genome Sciences, Diosynth (Akzo Nobel), Covance Biotechnology Services, BioReliance, and Tektagen. As part of the BioTechLogic team, Rachel provides API and Drug Product manufacturing and project support for clients with protein, vaccine, oligonucleotide and synthetic blood products. Rachel holds a B.S in Biology, with a concentration in Molecular Biology and Biotechnology from East Carolina University.


John Kandl - BioTechLogic

John Kandl joined BioTechLogic in 2008 with a focus on contract manufacturing management, process development, and validation activities.  John has over 20 years of experience in the biopharmaceutical industry. He has previously held Quality Assurance positions at Exelixis and Tercica, Inc where he maintained oversight of the contract manufacturing for numerous APIs and drug products, developed corporate quality systems, validation programs, and regulatory submissions. Prior to this John was a Project Engineer with SAVIS Inc. a consulting firm for the pharmaceutical/biotechnology industry. At SAVIS, John led numerous analytical, equipment, computer, cleaning, and process validation projects. John holds a B.S. in Chemical Engineering from the University of Missouri.


Ted Condez

Ted Condez joined BioTechLogic in September 2019 with a focus on medical device delivery systems. Ted has over 15 years of experience in the medical device industry and has held both technical and management roles supporting various technologies including neuro and cardio implants, catheter delivery systems, and medical electrical equipment.  He also has experience in combination product quality systems and design quality assurance. As a Senior Consultant, Ted’s primary responsibility is to provide support to combination product projects with focus on design controls, design verification and validation, design reviews, design transfer, design dossier/technical file writing, and quality systems development. Ted holds a B.S. in Health Sciences from California State University Hayward and has completed graduate courses in Systems Engineering from Embry Riddle Aeronautical University.

Eileen Choi

Eileen Choi, PhD joined BioTechLogic as a Senior Consultant, Technical Operations in 2019 with more than 20 years of experience working in the biopharmaceutical and chemical engineering fields. Her role at BioTechLogic includes providing consulting services in all areas of technical operations including process and analytical method development and validation. She also provides project management and manufacturing support, process validation expertise, support for the development, qualification and validation of analytical methods including analytical method validation of intermediates for clients with antibody, antibody conjugates, recombinant protein, and blood-based products. Additionally, she supports validation activities for biologics clients, such as in-process/media/buffer/solution hold time studies, chromatography and TFF membrane re-use studies, shipping validation, filter validation, and leachables/extractables risk assessments for both in-process product contact material and container closure systems. Her role also includes leading remediation projects to enhance compliance for manufacturing processes and analytical methods in support of manufacturing and quality control of various products.

She earned a Ph.D., Chemical Engineering with emphasis in Molecular Biology and Bioscience form Michigan Technology University, Houghton, MI. Eileen earned her B.S., Chemical Engineering, also from Michigan Technology University.


Ariel Bornstein, BioTechLogic

Ariel Bornstein joined BioTechLogic in 2020 and has over 15 years of experience in the biopharmaceutical industry. He has held positions in process development, MSAT, commercial manufacturing operations, and technical writing in the recombinant protein, plasma product, and oligonucleotide drug substance and drug product manufacturing fields. His primary consulting responsibilities involve technical and manufacturing operations support, process development and validation activities, process risk assessment, authoring and review of technical reports, batch records, SOPs, and other supporting documents.

Additionally, Ariel supports validation activities for biologics clients, including hold time studies, resin and membrane re-use studies, shipping studies, filter validation, and extractables & leachables assessments. Ariel is a graduate of Brandeis University.

Ariel Bornstein, BioTechLogic

Tyler Goodwin, PhD joined BioTechLogic in 2021 with a focus on cell and gene therapy development. Prior to BioTechLogic, Tyler worked at numerous cell and gene therapy companies such as Qualiber, Precision Biosciences, and Kriya Therapeutics. Tyler served as the AAV Drug Product Lead at Kriya Therapeutics in which he was responsible for the development of downstream drug product activities. While at Precision Biosciences, Tyler served as a scientist and leader for the development of non-viral mRNA gene editing-based therapies as well as the CAR-T CMC Clinical Program lead. Tyler was part of a team of scientists who contributed to the first reported gene editing directly in large non-human primates using Precision Biosciences ARCUS technology and has over 8 years of experience in developing gene therapies (non-viral and viral) in which he has published over 20 peer-reviewed scientific articles. Tyler has a BS and MS in Medicinal Chemistry from the University of North Carolina Wilmington, and a PhD in Pharmacoengineering and Molecular Pharmaceutics from The University of North Carolina Chapel Hill.

As a Senior Consultant, Tyler will provide clients with support on the development, qualification, transfer, and validation of cell and gene-based processes, as well as support analytical method development used to characterize, identify, and establish the quality of intermediates, drug substances, or drug products, and draft, review, author and perform expert reviews of Pharmaceutical Quality/CMC sections (Module 3) of the CTD for regulatory submissions.

Ariel Bornstein, BioTechLogic

Ashley Gucinski, PhD returned to BioTechLogic in 2021 after two years at COUR Pharmaceuticals, serving most recently as the Vice President of Operations and Quality. As a Senior Consultant in Analytical Services, Ashley supports clients in a variety of areas. She provides expert advice for the development, qualification, and validation of analytical methods pertaining to biopharmaceutical analysis and CMC development used throughout the drug development and approval process under GxP guidelines. She also provides expert advice on establishing analytical biosimilarity for drug product using the 351(k) pathway, the generation of comparability plans and protocols, analytical method transfer, and SOP generation and compliance. She will also draft, review, author, and perform expert reviews of the Pharmaceutical Quality/CMC sections (Module 3) of the CTD for regulatory submissions.

Before COUR and BioTechLogic, Ashley was a research chemist in the Office of Testing and Research at the US FDA. While with the agency, she served as an expert in bioanalytical method development, qualification, and validation, specializing in mass spectrometry, chromatography, and spectroscopy. She has authored 20 peer-reviewed publications and is involved with several professional societies, including the American Society for Mass Spectrometry and CASSS. Prior to joining FDA, Ashley was a Chateaubriand Fellow of the Office of Science of Technology of the Embassy of France in the United States at École Polytechnique in Palaiseau, France. She has a BA in Chemistry from Pomona College in Claremont, California, and a PhD in Chemistry from the University of Arizona.