Available to hire
Hi, I’m Marissa Ann Mandell, a Project Manager and Chemist with extensive experience in method development, LCMS/MS, microbiological assays, and high-throughput screening. I specialize in managing complex projects, optimizing lab operations, and collaborating across multidisciplinary teams. I enjoy working in dynamic environments where innovation meets precision.
I’m passionate about driving continuous improvement and fostering inclusive and supportive work cultures. With a strong background in chemistry and project management, I thrive on navigating technical challenges and delivering quality results on time.
Experience Level
Expert
Expert
Expert
Intermediate
Intermediate
Language
English
Fluent
Work Experience
Technical Project Manager / Chemist at Agilent Technologies
August 31, 2024 - July 9, 2025Managed $250M Operations & Supply Chain projects including New Product Implementations, CapEx, and Continuous Improvement initiatives, optimizing chemical processes and infrastructure. Prepared Glycobiology Labs for Prozyme M&A by leading technical transfer and QC assay training. Validated protein purification production utilizing diverse analytical techniques such as AKTA, Bioanalyzer, CE, ELISA, Fermentation, SEC, IEX, SDS-PAGE, SFC, UPLC, and UV. Developed polymer chemistry processes, upgraded bonding lab equipment, improved waste streams, and enhanced materials testing. Oversaw lab operations including instrument preventive maintenance, scheduling, procurement, and SOP development. Led Continuous Improvement, Root Cause Analysis, CAPA, customer investigations, and applications testing across various analytical instruments. Evaluated biocompatibility and toxicology of chromatographic components. Authored Chemistry Lifecycle Process documentation, FMEAs, and BOMs. Proficient in Agile
Consultant - Mass Spectrometry and Crop Science at Various Projects
July 1, 2017 - July 9, 2025Served as Laboratory Manager (remote) for a Cannabis Lab in Oregon with Cann-Care. Supported laboratory setup, quality assurance documentation, and compliance reviews. Trained analysts on mass spectrometry operations and data review best practices. Provided advisory services on LCMS/MS method development, troubleshooting, and workflow optimization at Calibrex DX.
R & D Specialist II at Bayer Crop Science
December 31, 2014 - July 9, 2025Led R&D projects focused on plant phytopathogen biocontrol agents and antimicrobial compounds. Developed and validated high-throughput LCMS/MS methods, SPE extractions, and bioassay-guided fractionation workflows. Operated and maintained various instrumentation platforms including Agilent, Sciex, and Thermo. Programmed Tecan Liquid Handling Robots. Conducted microbiology assays with sterile techniques specializing in several bacterial agents. Managed laboratory buildout activities including instrument scoping, installations, electrical upgrades, and staff training. Authored technical reports, SOPs, posters, and conducted scientific presentations. Processed and released up to 1,000 QC samples weekly via LIMS. Mentored junior scientists on assay development and lab best practices.
Office Manager at City Diesel
August 31, 2011 - July 9, 2025Oversaw daily office operations including invoicing, payroll, licensing, purchasing, marketing, reception, and document preparation.
Licensed Life Insurance Agent
April 30, 2011 - July 9, 2025Held professional license and worked as a licensed life insurance agent.
Associate Scientist II LC-MS/MS Operator at Intertek
May 31, 2008 - July 9, 2025Developed and operated Sciex LCMS/MS analytical methods, managed data within LIMS, and trained technicians on analytical workflows.
R & D Research Associate II in DMPK at Roche
December 31, 2007 - July 9, 2025Performed in-vitro and in-vivo screening studies, including pharmacokinetic/pharmacodynamic and iADME assays using various cell lines and enzyme systems. Operated LCMS/MS platforms and liquid handling systems. Maintained transfected cell lines. Documented data rigorously in LIMS and trained junior staff in high-throughput workflows.
QC Chemist in Product Release at Impax Laboratories
December 31, 2004 - July 9, 2025Conducted pharmaceutical quality control testing compliant with GMP, GLP, FDA, and ISO 9001 standards. Operated Waters HPLC and performed additional analyses such as wet chemistry, dissolution, KF, FTIR, TLC, and UV. Completed continuing education in internal auditing and communication.
Technical Project Manager / Chemist at Agilent Technologies
August 31, 2024 - July 10, 2025Managed $250M Operations & Supply Chain projects focused on NPIs, CapEx, and Continuous Improvement. Led technical transfer and quality control assay training for Glycobiology Labs during Prozyme M&A. Validated protein purification production with multiple biochemical techniques. Developed polymer chemistry processes and upgraded laboratory infrastructure. Oversaw lab operations including instrument maintenance, scheduling, procurement, and SOP development. Led continuous improvement initiatives such as RCA, CAPA, and customer investigations. Authored technical documentation including Chemistry Lifecycle Process, FMEAs, and BOMs. Proficient in Agile methodologies and various project management and analytical tools.
Consultant - Mass Spectrometry and Crop Science at Various Projects | Contract
July 1, 2017 - July 10, 2025Served as Laboratory Manager remotely for a Cannabis Lab and supported laboratory setup, QA documentation, and compliance reviews. Trained analysts on mass spectrometry operations and data review best practices. Advised on LCMS/MS method development, instrument troubleshooting, and workflow optimization.
R & D Specialist II at Bayer Crop Science
December 31, 2014 - July 10, 2025Led R&D projects on plant phytopathogen biocontrol agents and anti-microbial compounds. Developed and validated high-throughput LCMS/MS methods and bioassay-guided fractionation workflows. Operated and maintained various analytical platforms and programmed liquid handling robots. Conducted microbiology assays and managed lab buildout and staff training. Authored technical reports and SOPs, reviewed QC samples, and mentored junior scientists.
Office Manager at City Diesel
August 31, 2011 - July 10, 2025Managed invoicing, payroll, licensing, purchasing, marketing, reception, and document preparation.
Licensed Life Insurance Agent
April 30, 2011 - July 10, 2025Held a licensed life insurance agent role managing policies and customer interactions.
Associate Scientist II LC-MS/MS Operator at Intertek
May 31, 2008 - July 10, 2025Developed and operated Sciex LCMS/MS methods, managed data in LIMS, and trained technicians on analytical workflows.
R & D Research Associate II in DMPK at Roche
December 31, 2007 - July 10, 2025Performed in-vitro and in-vivo screening studies, including PK/PD and iADME assays. Operated LCMS/MS instruments and Hamilton liquid handlers. Maintained transfected cell lines, documented data in LIMS, delivered presentations, and trained junior staff on high-throughput workflows.
QC Chemist in Product Release at Impax Laboratories
December 31, 2004 - July 10, 2025Conducted pharmaceutical QC testing in compliance with GMP, GLP, FDA, and ISO standards. Operated Waters HPLC and performed various chemical analyses. Completed CEUs in internal auditing basics and communication.
Technical Project Manager / Chemist at Agilent Technologies
August 31, 2024 - July 10, 2025Managed $250M Operations & Supply Chain projects (NPIs, CapEx, CI), optimizing chemical processes and infrastructure. Prepared Glycobiology Labs for Prozyme M&A, leading technical transfer and QC assay training. Validated protein purification production using various techniques and managed lab operations including instrument PMs, scheduling, procurement, and SOP development. Led continuous improvement, root cause analysis, corrective/preventative actions, customer investigations, and applications testing. Developed process documentation and prioritized projects using Ease-Impact Matrix. Proficient in Agile, SAP, SharePoint, MS Project, Q-Pulse, Smartsheet, and Trello.
Consultant - Mass Spectrometry and Crop Science at Various Projects | Contract
July 1, 2017 - July 10, 2025Served as Laboratory Manager remotely for a Cannabis Lab in Oregon. Supported lab setup, quality assurance documentation, and compliance reviews. Trained analysts on mass spectrometry operations and data review best practices. Advised on LCMS/MS method development, instrument troubleshooting, and workflow optimization at Calibrex DX.
R & D Specialist II at Bayer Crop Science
December 31, 2014 - July 10, 2025Led R&D projects on plant phytopathogen biocontrol agents and antimicrobial compounds. Developed and validated high-throughput LCMS/MS methods, SPE extractions, and bioassay-guided workflows. Operated and maintained multiple analytical platforms and programmed liquid handling robots. Conducted microbiology assays specializing in specific bacterial and fungal agents. Managed lab buildout and authored technical reports, SOPs, and scientific presentations. Processed and released large volumes of QC samples and mentored junior scientists.
Office Manager at City Diesel
August 31, 2011 - July 10, 2025Oversaw invoicing, payroll, licensing, purchasing, marketing, reception, and document preparation.
Licensed Life Insurance Agent at Self-employed
April 30, 2011 - July 10, 2025Held active life insurance license and performed related duties.
Associate Scientist II LC-MS/MS Operator at Intertek
May 31, 2008 - July 10, 2025Developed and operated Sciex LCMS/MS methods, managed data in LIMS, and trained technicians on analytical workflows.
R & D Research Associate II in DMPK at Roche
December 31, 2007 - July 10, 2025Performed in-vitro and in-vivo screening studies including PK/PD and iADME assays. Operated LCMS/MS and other instruments, maintained cell lines, documented data, delivered presentations, and trained junior staff on high-throughput workflows.
QC Chemist in Product Release at Impax Laboratories
December 31, 2004 - July 10, 2025Conducted pharmaceutical QC testing in compliance with GMP, GLP, FDA, and ISO 9001 standards. Operated Waters HPLC and performed wet chemistry and other analyses. Completed continuing education in internal auditing and communication.
Undergraduate Researcher in Chemistry at University Of California at Santa Cruz
June 30, 2002 - July 10, 2025Investigated photosensitive porphyrins for photodynamic therapy using spectroscopy and wet chemistry techniques. Reviewed literature and presented research findings.
Education
B.A. at University of California, Santa Cruz
January 1, 1998 - December 31, 2002A.S. at American River College
January 1, 1996 - December 31, 1998B.A. at University of California, Santa Cruz
January 1, 1998 - December 31, 2002A.S. at American River College
January 1, 1996 - December 31, 1998B.A. at University of California, Santa Cruz
January 1, 1999 - December 31, 2002A.S. at American River College
January 1, 1997 - December 31, 1999Qualifications
10-Hour OSHA Safety Card
January 11, 2030 - July 9, 2025Project Management Professional (PMP)
January 1, 2022 - December 31, 2025Six Sigma Green Belt
January 11, 2030 - July 9, 2025Licensed Life Insurance Agent
March 1, 2009 - April 30, 2011PMI – Project Management Institute Membership
January 1, 2022 - December 31, 2025SWE – Society of Women Engineers Membership
January 1, 2019 - December 31, 2022ACS – American Chemical Society Membership
January 1, 2014 - December 31, 2018ASMS – American Society for Mass Spectrometry Membership
January 1, 2012 - December 31, 201310-Hour OSHA Safety Card
January 1, 2017 - December 31, 2017Project Management Professional (PMP)
January 1, 2022 - December 31, 2025Six Sigma Green Belt
January 1, 2017 - December 31, 2019Licensed Life Insurance Agent
March 1, 2009 - April 30, 201110-Hour OSHA Safety Card
January 11, 2030 - July 10, 2025Project Management Professional (PMP)
January 1, 2022 - December 31, 2025Six Sigma Green Belt
January 11, 2030 - July 10, 2025Licensed Life Insurance Agent #0G54566
March 1, 2009 - April 30, 2011Industry Experience
Life Sciences, Manufacturing, Agriculture & Mining, Professional Services, Healthcare
Experience Level
Expert
Expert
Expert
Intermediate
Intermediate
Hire a Project Manager
We have the best project manager experts on Twine. Hire a project manager in Sacramento today.