Jan Maciejewski
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Jan Maciejewski Email & Phone Number

Associate Scientist III at Arrowhead Pharmaceuticals
Location: San Diego, California, United States 15 work roles 3 schools
1 work email found @arrowheadpharma.com 1 phone found area 858 LinkedIn matched
✓ Verified May 2026 4 data sources Profile completeness 100%

Contact Signals · 1 work email · 1 phone

Work email j****@arrowheadpharma.com
Direct phone (858) ***-****
LinkedIn Profile matched
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Current company
Role
Associate Scientist III
Location
San Diego, California, United States
Company size

Who is Jan Maciejewski? Overview

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Quick answer

Jan Maciejewski is listed as Associate Scientist III at Arrowhead Pharmaceuticals, a company with 198 employees, based in San Diego, California, United States. AeroLeads shows a work email signal at arrowheadpharma.com, phone signal with area code 858, and a matched LinkedIn profile for Jan Maciejewski.

Jan Maciejewski previously worked as Consultant at Lassogen, Inc. and Research Associate II at Ferring Pharmaceuticals. Jan Maciejewski holds Master'S Degree, Chemistry, 5.64 / 6 from University Of Geneva.

Company email context

Email format at Arrowhead Pharmaceuticals

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{first_initial}{last}@arrowheadpharma.com
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AeroLeads found 1 current-domain work email signal for Jan Maciejewski. Compare company email patterns before reaching out.

Profile bio

About Jan Maciejewski

“If you always do what you’ve always done, you’ll always get what you’ve always got.”― Henry FordI am a chemist with a passion for creating change through synthesis and process optimization. The darkness of the unknown can be revealed when excited with the appropriate light source. My journey in the sciences has exposed me to a broad range of disciplines, providing me with a far –reaching foundation. I have synthesized various molecule types (small molecule, nucleic acids and peptides) utilizing a broad range of techniques in the pursuit of discovering novel therapeutics or materials. I have also developed an extensive expertise with the overall process of target development (purification, analytical characterization, logistics and iterative design). Along with chemistry methodologies, I have integrated into engineering environments, providing me with a deeper insight of how processes can be designed and controlled.Utilizing my far-reaching foundation to formulate creative solutions drives my desires to boldly go where no chemists has gone before. Core competencies:• Multi-step synthesis• Photochemistry (Synthesis, characterization)• Purification (HPLC)• Analysis (UV / Vis, FT-IR, MS [MALDI/ ESI /TOF/ Ion Trap/quad], NMR [1H, 13C, 2-dimensional])• Computation (Gaussian/TDDFT, Matlab)• Modeling (Chemdraw)• Technical reading (Scifinder, Google scholar)Available to discuss new opportunities. Please reach me by e-mail (janmacieje@gmail.com)

Listed skills include Hplc, Uv/Vis, Chemistry, Organic Chemistry, and 28 others.

Current workplace

Jan Maciejewski's current company

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Arrowhead Pharmaceuticals
Arrowhead Pharmaceuticals
Associate Scientist III
pasadena, california, united states
Employees
198
AeroLeads page
15 roles

Jan Maciejewski work experience

A career timeline built from the work history available for this profile.

Consultant

San Diego, California, United States

Provided assistance for the analysis and characterization of expressed lasso-peptides for efficacy studies. Established HPLC methods and presented results in a group format.

Aug 2020 - Oct 2020

Research Associate Ii

Greater San Diego Area

Assisted in the research and discovery efforts of peptide and small molecule therapeutics addressing unmet needs in a variety of fields (antibiotics, gastroenterology, and fertility). Synthesized analogs of pharmaceutically relevant compounds for downstream testing and characterization. Addressed adverse properties (proteolysis, poor solubility, poor.

Nov 2018 - Jul 2020

Research Associate Ii

Greater San Diego Area

Project focused on the development of an in-house oligonucleotide synthesizer capable of generating pools of long oligonucleotide with high fidelity, large diversity at an ideal yield. Modeling, characterization and experiment design were carried out to identify critical parameters. Synthesizer was bench marked against a range of established synthesizers.

Jun 2016 - Sep 2018

Research Associate

Greater San Diego Area

Project focused on the development of an in-house oligonucleotide synthesizer capable of generating pools of long oligonucleotide with high fidelity, large diversity at an ideal yield. Modeling, characterization and experiment design were carried out to identify critical parameters. Synthesizer was bench marked against a range of established synthesizers.

Jul 2015 - May 2016

Sales Associate

Lausanne Area, Switzerland

Assisted with the set-up and take-down of a temporary pop-up shop. Assisted with the sale of sportswear and stock inventory.

Nov 2014 - Dec 2014

Master Thesis Project

Lausanne Area, Switzerland

Performed the synthetic groundwork for the development of a polymer torsional switch that could find application as artificial retina. Synthesized a photochromic azobenzene derivative utilizing diazocoupling and an organo-palladium cross-coupling reaction with a bithiophene. Characterized and analyzed reaction products using NMR and MS. Authored a.

Feb 2014 - Aug 2014

Sales Associate

Lausanne Area, Switzerland

Assisted in the liquidation of stock at a temporary store outlet for sportswear. Duties included: Interaction with customers, inventory, store cleaning and reorganization of apparel.

Nov 2013 - Dec 2013

Class Monitor

Geneva Area, Switzerland

Assisted professor and graduate students in the supervision and mentoring of bachelor students during physical chemistry laboratory courses. Provided translation when language barriers arose between French and English.

Sep 2013 - Dec 2013

Intern

Greater San Diego Area

Characterization of sub-micrometer particle distribution in sea spray (eddy covariance) utilizing a UHSAS and sonic anemometer.

Jul 2013 - Aug 2013

Intern

University Of Geneva, Switzerland

Characterization of a photoinitiator for comparison with alternative candidates to be used in two photon polymerization (quantum life efficiency, solvatochromism, excitation lifetimes).

Apr 2013 - May 2013

Intern

University Of Geneva, Switzerland

Synthesized target molecule to be used for on-going photovoltaic cell research. Utilized various protecting groups to selectively add substituents to the photochromic NDI core that would facilitate self-assembly during polymerization via hydrogen bonding and disulfide bridges. Characterized and analyzed reaction products using NMR and MS.

Feb 2013 - Mar 2013

Intern

Oceanside, California

Involved in the production siRNA (synthesis, purification, analysis, lyophilization). Performed analytical validation for on-going research intermediates of a anti-cancer drug delivery platform. Assisted with laboratory operations (instrument purchases and maintenance). Assisted in drug formulation stability studies.

Feb 2011 - Aug 2012

Intern

Torrey Pines, California

Ran synthesis and purification of target pharmaceutical small molecules.Updated and maintained chemical database. Operated various analytical instruments (HPLC, GC-MS and melting temperature aparatus).

Jun 2007 - Aug 2007
Team & coworkers

Colleagues at Arrowhead Pharmaceuticals

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3 education records

Jan Maciejewski education

Master'S Degree, Chemistry, 5.64 / 6

Lab supervisor for Bachelor students learning first year physical chemistry. Master thesis titled “Synthesis of polymer torsional switches.

Diploma, General Education

University City High School

Activities and Societies: Saxaphonist in the concert and marching band.Completed secondary Schooling.

FAQ

Frequently asked questions about Jan Maciejewski

Quick answers generated from the profile data available on this page.

What company does Jan Maciejewski work for?

Jan Maciejewski works for Arrowhead Pharmaceuticals.

What is Jan Maciejewski's role at Arrowhead Pharmaceuticals?

Jan Maciejewski is listed as Associate Scientist III at Arrowhead Pharmaceuticals.

What is Jan Maciejewski's email address?

AeroLeads has found 1 work email signal at @arrowheadpharma.com for Jan Maciejewski at Arrowhead Pharmaceuticals.

What is Jan Maciejewski's phone number?

AeroLeads has found 1 phone signal(s) with area code 858 for Jan Maciejewski at Arrowhead Pharmaceuticals.

Where is Jan Maciejewski based?

Jan Maciejewski is based in San Diego, California, United States while working with Arrowhead Pharmaceuticals.

What companies has Jan Maciejewski worked for?

Jan Maciejewski has worked for Arrowhead Pharmaceuticals, Lassogen, Inc., Ferring Pharmaceuticals, Synthetic Genomics, and Mover Sportswear.

Who are Jan Maciejewski's colleagues at Arrowhead Pharmaceuticals?

Jan Maciejewski's colleagues at Arrowhead Pharmaceuticals include Anh Ta, Khatijah Amir Hakim, Caleigh Rasmussen, Mariah Blake, and Darnell Fuller.

How can I contact Jan Maciejewski?

You can use AeroLeads to view verified contact signals for Jan Maciejewski at Arrowhead Pharmaceuticals, including work email, phone, and LinkedIn data when available.

What schools did Jan Maciejewski attend?

Jan Maciejewski holds Master'S Degree, Chemistry, 5.64 / 6 from University Of Geneva.

What skills is Jan Maciejewski known for?

Jan Maciejewski is listed with skills including Hplc, Uv/Vis, Chemistry, Organic Chemistry, Purification, Pcr, Analytical Chemistry, and Gas Chromatography.

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