The work we do at Eurofins Professional Scientific Services matters, and so do our employees. At Eurofins PSS, we focus on your professional growth—giving you the opportunity to break into the biopharmaceutical industry and grow your career from the ground up. We offer supportive teams, strong training resources, work-life balance, and a competitive benefits package.

Eurofins Scientific is a global life sciences leader, providing analytical testing services across multiple industries to ensure products are safe, authentic, and compliant—from food and water to pharmaceuticals and clinical research.

If you’re looking for a rewarding career and a place to grow, apply with us today!

We are seeking a Mass Spectrometry Scientist (LC-MS/MS – Peptides/Proteomics) to support advanced peptide characterization and modification analysis using high-resolution mass spectrometry. This role is highly technical and focused on method development, workflow optimization, and complex data interpretation to support molecular characterization efforts.

The ideal candidate will bring strong experience with peptide mapping and MS/MS fragmentation techniques in a laboratory environment.

Key Responsibilities

• Develop, optimize, and execute accurate-mass LC-MS/MS workflows for peptide identification, sequence confirmation, and modification analysis
• Apply high-resolution MS and MS/MS fragmentation techniques (CID, HCD, ETD) for confident identification and site localization of peptide modifications and isomers
• Optimize sample preparation and enzymatic digestion workflows to enhance detection of low-abundance species
• Analyze and interpret complex proteomic and peptide datasets using industry-standard software
• Advance and refine LC-MS/MS methods to support broader structural and molecular characterization initiatives
• Document experimental procedures, results, and interpretations following best practices
• Communicate findings clearly to cross-functional scientific teams

Required

• Hands-on experience with LC-MS/MS for peptide/proteomic analysis, including fragmentation techniques (CID, HCD, ETD)
• Strong problem-solving skills with ability to work independently and collaboratively
• Degree in Chemistry, Biochemistry, or related field:
  • BS: 5–8 years
  • MS: 3–6 years
  • PhD: 0–2 years
    (or equivalent experience)
• Authorization to work in the U.S. without sponsorship

Preferred

• Experience with LC-MS/MS method development and optimization
• Familiarity with proteomics/data analysis software (e.g., Mascot, Proteome Discoverer, Byonic, etc.)
• Experience in a GMP or regulated environment
• Knowledge of LIMS or data management systems

The position is Full Time, Monday through Friday, 8am-5pm, with overtime as needed. Candidates living within a commutable distance of Andover, MA, are encouraged to apply.

What we offer:

• Excellent full-time benefits, including comprehensive medical coverage, dental, and vision options
• Life and disability insurance
• 401(k) with company match
• Paid vacation and holidays
• Yearly goal-based bonus & eligibility for merit-based increases
• Hourly rate is between $30.00-$33.00, depending on education and experience

Eurofins USA PSS Insourcing Solutions is a Disabled and Veteran Equal Employment Opportunity employer.