2,110,344open jobs
130,027companies
243,042added this week
Browse all
Salary
$128k – $146k per year
Location
In office (Boston)
Seniority
Middle · 1+ year exp
Visa
Filed H-1B visas in the last two years

Confirmed on the employer's own hiring board on Nov 5, 2026. First seen by Alion on Oct 13, 2026.

Overview
Company
Impact
Profile match
PepGen is a clinical-stage biotechnology company developing oligonucleotide therapies delivered with its enhanced cell-penetrating peptide technology. Its pipeline targets severe neuromuscular and neurological diseases such as Duchenne muscular dystrophy and myotonic dystrophy, supported by in-house analytical development labs. The company is headquartered in Boston, Massachusetts, United States.

Position Summary

The Scientist II, Analytical Development will be a key member of the Analytical Development group at PepGen. The successful candidate will have great opportunities to use state-of art instruments for studying various potential drug candidates to ultimately create transformational therapies for patients with neuromuscular disease. The candidate will lead method development, impurity characterization and provide analytical support for in-house drug discovery and development activities. The successful candidate also will work very closely within AD/QC and with CMC teams to develop and optimize the methods, support analytical comparability for various chemical entities like peptides, oligos and RepGen's proprietary enhanced delivery oligonucleotides (EDOs), which is essential to the quality of therapies for patients. This is lab-based role that will be on-site for 5 days/week.

Responsibilities

  • Work closely with managers to develop analytical methods (LC-UV and/or LC-MS) for the purity analysis and impurity characterization of small molecules, peptides, Phosphonodiamidite Morpholino Oligomers (PMOs), and Peptide Conjugated Phosphorodiamidate Morpholino Oligomers (PPMOs).
  • Provide analytical support to internal discovery and development activities, including stability sample analysis/characterization, analytical comparability, and forced degradation sample preparation and characterization.
  • Write and review analytical protocol and report for in-house analytical activities and prepare analytical source documents to summarize analytical activities for regulatory filing.
  • Perform/guide routine maintenance of analytical equipment, HPLC systems, balance, pH meters, etc.; contribute to new instrument setup.
  • Contribute to analytical method development, qualification/validation and transfer of HPLC and LC-MS methods at external labs and provide necessary technical support for method troubleshooting at CTLs/CMOs.
  • Review method development and validation protocols and reports generated by CTLs and CMOs (mainly LC-MS methods) as needed
  • Foster a culture of collaboration, innovation, discovery, and cutting-edge research culture focused on scientific excellence, open communication, and continual improvement.
  • Serve as the analytical characterization lead for peptides, oligonucleotides, and the peptide-oligo conjugates, utilizing advanced LC-MS methodologies to support process development, product understanding, and regulatory filings.
  • Independently design, execute, interpret, and troubleshoot LC-MS experiments for structural elucidation, impurity identification, degradation pathway assessment, and comparability studies.
  • Proactively identify technical risks, propose innovative experimental approaches, and recommend data-driven solutions to advance development programs.
  • Self-motivated scientist with a demonstrated ability to work independently, make sound scientific decisions, and drive projects with minimal supervision.

Requirements

  • Ph.D. in Chemistry or related area and 1+ years’ or MS degree and >5 years’ relevant experience in analytical development in pharmaceutical/biotech setting.
  • Hands-on method development experience in HPLC and MS (e.g. TOF, QTOF, etc.) is a must.
  • Deep hands-on experience with LC-MS characterization of complex molecules, including impurity profiling, degradant identification, and structural elucidation.
  • Experience with peptides and oligonucleotides
  • Experience in method transfer, qualification, and validation of chromatographic methods (HPLC, GC, LC-MS, etc.) is preferred.
  • Good working knowledge of current Good Manufacturing Practices (cGMPs) or Good Lab Practices (GLP) is a plus.
  • Working knowledge of CMC (Chemistry, Manufacturing, Control).
  • Familiarity with analytical support for early discovery and formulation development is a plus.
  • Ability to effectively prioritize and deliver on tight timelines and work in a fast paced/dynamic team environment
Compensation

The estimate full-time salary range for this role is between $128,000 to $146,000. The final compensation package offered to a successful candidate will reflect a number of factors including but not limited to prior experience, relevant skills, education, qualifications and certifications, business needs, internal equity, and market data.

PepGen provides eligible employees a comprehensive and competitive total compensation package including but not limited to a discretionary annual bonus, equity, health insurance (including medical, dental, and vision), life and disability insurance, paid time off with paid holidays, paid parental leave, a 401(k) plan, cell phone reimbursement, student loan repayment or 529 contributions, and a lifestyle spending account.

About PepGen

PepGen is a clinical-stage biotechnology company advancing the next generation of oligonucleotide therapies with the goal of transforming the treatment of severe neuromuscular and neurological diseases. PepGen’s Enhanced Delivery Oligonucleotide (EDO) platform is founded on over a decade of research and development and leverages cell-penetrating peptides to improve the uptake and activity of conjugated oligonucleotide therapeutics. Using these EDO peptides, we are generating a pipeline of oligonucleotide therapeutic candidates designed to target the root cause of serious diseases.

For more information, please visit PepGen.com. Follow PepGen on LinkedIn and X.

EEO Statement

PepGen is an Equal Opportunity Employer committed to a culturally diverse workforce. All qualified applicants will receive consideration for employment without regard to race; color; creed; religion; national origin; age; ancestry; nationality; marital, domestic partnership or civil union status; sex, gender, gender identity or expression; affectional or sexual orientation; disability; veteran or military status or liability for military status.

Recruitment & Staffing Agencies

PepGen does not accept unsolicited agency resumes. The company will not be responsible for any fees related to resumes that are unsolicited. Thank you.

E-Verify

PepGen is an E-Verify Employer. For more information about E-Verify, please see here.

Free account
Stop reading job ads. Get the ones that fit.
One free account turns this page into a shortlist built around your stack, your level and your pay.
Match on every job. Stack, seniority, pay and location, scored against your profile.
2,110,344 open roles. Read straight off company career pages, refreshed every day.
Unlimited applications. Every one you send is tracked in one place, on-site or on a company board.
3 tailored CVs a month. Rewritten for the exact job you are applying to. Included free.
Create a free account Continue with Google
Free forever. No card. Under a minute.

Your match

How well do you fit this role?
Two answers are enough for a real match. No account needed.
Check my fit
Answers stay in this browser until you create an account.

Recommended for you based on this role

Biotech
Similar stack
Same company
Boston
$157k – $212k per year · Remote (United States) · Full-Time · 1+ year exp · Bachelor's Degree · Thousand Oaks
Life Sciences
Veeva
Apply
$157k – $212k per year · Remote (United States) · Full-Time · 1+ year exp · Bachelor's Degree · Thousand Oaks
Life Sciences
Veeva
Apply
In office · Full-Time · Fort Lauderdale
Apply
In office · Bachelor's Degree · New York
Life Sciences
Flow Cytometry
Antibody Engineering
Apply
In office · 3+ years exp · Bachelor's Degree · Portland
Databases
Oracle
DevOps
GCP
Windows
Cybersecurity
HIPAA
Analytics
Microsoft Excel
Life Sciences
Good Clinical Practice
Apply
In office · Internship · Guidonia Montecelio
Life Sciences
HPLC
GLP
Apply
In office · Full-Time · High School Diploma · Dania Beach
Cybersecurity
GDPR
Life Sciences
HPLC
GMP
Apply
$98k – $144k per year · In office · 6+ years exp · Bachelor's Degree · Kalundborg
Life Sciences
GMP
Apply
$86k – $126k per year · In office · 5+ years exp · Bachelor's Degree · Kalundborg
Life Sciences
GMP
Apply
In office · Full-Time · 2+ years exp · High School Diploma · Swiftwater
Life Sciences
GMP
Apply
$170k – $220k per year · In office · 8+ years exp · Master's Degree
Life Sciences
Mass Spectrometry
HPLC
Chromatography
GMP
Apply
$174k – $235k per year · Equity · In office · Full-Time · 3+ years exp · Bachelor's Degree · Boston · Austin · Arlington · Seattle · Atlanta
DevOps
AWS
Analytics
Tableau
Apply
$138k – $187k per year · Equity · In office · Full-Time · 7+ years exp · Bachelor's Degree · Boston · Austin
Analytics
Microsoft Excel
Apply
$204k – $275k per year · Equity · In office · Full-Time · 8+ years exp · Bachelor's Degree · Boston · Austin · Nashville · Arlington · Bellevue
AI/ML
Apache TVM
Management
Smartsheet
SharePoint
Apply
$100k – $135k per year · Hybrid · Full-Time · 3+ years exp · Master's Degree · Boston
Apply
Co-Op 1 day ago
$40k – $44k per year · In office · Bachelor's Degree · Boston
Design
AutoCAD
Apply
See all jobs
This is one of many
2,110,344 more open roles from verified company boards, updated every day.