Senior Scientist, Quality Assurance and NPD

Sr. Scientist “Quality”

Cell# 949-***-****

Mohsen Challan,

***********@*****.***

March 3, 2026

Calif. City, CA 93505, USA

PROFESSIONAL SUMMARY

●I am a person experienced in different sectors and domains with a restless mindset on value generation and continuous improvement, supported by an ever-increasing set of technical and behavioral skills. I'm able to manage different requests across diverse processes, teams, and projects with continuous positive results new product development “NPD,” process & design failure mode and effects analysis “PFMEAs,” and “DFMEAs.” My objective is to increase my experience, knowledge, and capabilities through the exposure to new challenges.

●Specialties: management, presentations, administration, data analysis, planning, database administration, quality, improvements, projects, materials management, negotiation, office administration, on-system control, and system applications and products “SAP.”

●As a scientist specialized in material science dedicated to a liquid base coating of the enriched target, developing application techniques for high withstand coatings. Extensive knowledge with I/O hybrid, electrostatic, and electroless coating.

●Performed raw chemicals testing, quality inspection, and auditing, standard pure additives analysis, develop formulations and failure investigations for pharmaceutical product manufacturing.

●Prepared standards and reagents; calibrated and operated sophisticated laboratory instrumentation such as HPLC, Titrations, Dissolution, DSC, TGA, Fourier Transform Infra-Red (FTIR) Spectroscopy, Circular Dichroism (CD), Nuclear Magnetic Resonance (NMR) Spectroscopy, UV/VIS and Raman spectrometer, following USP, EP test methods.

●I have experience in Optically Detected Magnetic Resonance (ODMR), photoluminescence (PL), cathode luminescence (CL), X-ray diffraction (XRD), and Raman, X-ray photoelectron spectroscopy (XPS).

●Worked on the radiation source characteristics and gauges and performed the routine operation, calibration, performance, and maintenance verification of lab equipment and instrumental analyses (AA, GC, HPLC, FTIR, CD, NMR, UV-Vis, XRF, INAA, RNAA, etc.).

●Utilized lab equipment such as Karl Fischer Auto Titrators, HPLC, GC, AA, and Spectrophotometers. Acid-base, redox, and complexometric titrations using wet chemistry techniques.

●Worked on Nuclear Activation Analysis (NAA), Raman spectroscopy RS, Positron Annihilation, TLD Characteristics, Gamma Irradiation for preservation and sterilization, EPR, ESR, NMR measurements, Excitation Functions, Cross-Section Data, Computational Physics, Radiation Spectroscopy, Environmental Radiation, and Radiology.

●Worked on the Author’s method development, method validations, provides input on updated and reviewed Standard Operating Procedures (SOPs), and stability sections of radiopharmaceutics regulatory submissions.

●Participated and supervised on investigations, address Out of Specifications (OOS), resolve deviations, implement and response evaluation (CAPA EVs), Laboratory Information and Management System (LIMS), Manufacturing Execution System (MES), System Applications and Products (SAP), Electronic Batch Record (EBR), Asset Management System (TRITON) and verify supplier effectiveness.

●Complied with current good manufacturing practices (cGMP’s) and Good Documentation Practices (GDP’s).

●Participate in knowledge and technology transfer and information sharing, preferred qualifications, and testing to provide SME validation and recommendations for corrections or improvement related to HPGe Lab.

●Performing all Engineering Changes Requested (ECR) for necessity, feasibility, cost estimate, required resources, and implementation of the change, issuing reports for proposed improvements or problems with components or assemblies to follow-up, feedback.

●Updated and maintained documents data in the lab notebook and followed basic current good laboratory practices CGLP’s guidelines.

LABORATORY SKILLS

●Accustomed to following laboratory SOPs in cGMP and cGLP environments.

●Process development with GMP manufacturing, quality systems, and writing regulated documents

●Participated and supervised on investigations, address Out of Specifications (OOS), resolve deviations, implement and response evaluation (CAPAs), and verify supplier effectiveness.

●General Laboratory skills, including pipetting, reagent preparation, serial dilations, develop formulations, and analytical balances. Knowledge of interpreting SDS, waste management, and chemical and biological safety procedures.

●Experience with gravimetric, volumetric, and photometric analysis.

●Utilizing lab equipment such as Karl Fischer Auto Titrators, wet chemistry, Raman Spectrometer, HPLC, GC, AA, and Spectrophotometers. Acid-base, and redox, and complexometric titrations.

●Experience with quality systems (Deviations, CAPA, CAPA EV, LIMS, MES, SAP, EBR, TRITON) support.

●Proficiency in keeping detailed laboratory notebooks, and direct experience with cyclotron operation and beamline simulation tools.

●Experience with detector simulation tools such as MCNP and GEANT4 or other software packages.

●Experience with detector assembly, readout, debugging, FPGA, and LabView programming.

●Familiarity with basic accelerator subsystems (vacuum, RF, magnets, etc.)

●Familiar with solid-state and nuclear physics and understanding of x-ray producing devices, radiation shielding design, radiation detectors

●Carrying out maintenance, renovation, and fabrication for Semiconductor Detector (HPGe, and Si).

●Having a good of electrical, mechanical aptitudes. Knowledge and familiarity with image processing for SSNTD’s.

●Document and perform radiation dosimetry for configurations where density, position, and energy may vary (iso-dose curve).

●Develop and execute HPGe and Si detectors characterizations and establish output specifications.

●Participate in knowledge and technology transfer and information sharing, preferred qualifications, and testing to provide SME validation and recommendations for corrections or improvement related to HPGe Lab.

●Personnel radiation safety, compliance, monitoring, and reporting and design perform and document radiation surveys for new irradiation configurations.

●Experience with detector R&D and operation.

●Performed qualitative and quantitative laboratory testing. Chemical and physical analysis of raw materials, polymers, finished products, and stability samples.

●Other: “US Citizen,” “No work authorization required,” “No sponsorship required,” and “Authorized to work for any US employer”

WORK HISTORY

Rio Tinto U. S. Borax, Quality Assurance Lab. & Deprt., Boron, CA

May. 2021 to Present

Senior Technician/Analyst

Responsibilities

●Participate in projects for production improvement support and developing initiatives through innovation.

●Participate in setting up and execute project’s studies from viewpoint of new processes, procedures, SOP’s, right instrumentations, equipment calibration and standardization.

●Coordination, development, and presentation of the analysis/correction process by the analysts to minimize data gaps and improve the transactional metrics.

●Active participation in the sessions for effort consolidation, data manipulation and communication with other stakeholders of the program in other teams on and off site.

●Analysis, reporting and correction of the data gaps to assure the alignment of the SAP system conditions.

●Support at the system level and coordination with teams offshore for the correct and optimal implementation of strategies and contracts by the category specialists.

●Support in the creation, implementation, and improvement of an integrator strategy at the plant.

3M, Irvine, CA

Apr 2019 to May. 2021

QC Specialist/Inspector

Responsibilities

●Carrying out kit quality control, dates, serial, patches, and quantities to product clearance packages.

●Internal auditor, gathering, and reviewing documentation.

●Performed raw chemicals testing, quality inspection, and auditing. Standard pure additives analysis and failure investigations for pharmaceutical product manufacturing.

●Prepared standards and reagents; calibrated and operated sophisticated laboratory instrumentation such as HPLC, Titrations, Dissolution, DSC, TGA, FTIR, CD, NMR, UV/VIS spectrophotometer, Laser Raman Spectroscopy,

●Quality systems (Deviations, CAPA, CAPA EV, LIMS, MES, SAP, EBR) support following USP, EP test methods.

●Reviewed and audited the documents data for completeness, accuracy, and compliance with requirements.

●Review production processes to comply with standards and prerequisite instructions.

TECHNICAL SKILLS

●MS-Office Skills include: (MS-Word, PowerPoint, Excel, etc.), the ability to create templates, presentations, graphs, charts, reports, images, and other supporting documents.

●Windows & Linux Operating System.

●Used several draw programs like Origin, CorelDraw, Photoshop, and Chem-Draw.

●Plagiarism tools: Ithenticate; Turnitin, others. & Writing tool & grammar checker: Grammarly.

●Data acquisition & evaluation: MAESTRO; PCA; GIENT 2000, GAMMA-VISION, etc.,

●Probabilistic analysis and theoretical modeling: MCNP, EMPIRE, and MATLAB.

●Reference and citation: ENDNOTE

●Principal component analysis & statistics: XLSTAT, SPSS, Sigma Plot, and Tableau

EDUCATION

●World Education Services WES Verified International Academic Qualifications

●Ain Shams University

B. Sc. in Physics and Chemistry

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