Application Scientist – Chemical Ionization (USA)


TOFWERK is making the world a cleaner place through innovative solutions for chemical analysis.

Our scientists and engineers design, manufacture, and optimize high performance mass spectrometers for new applications to support researchers and industrial customers around the world.  

We are headquartered in Thun, Switzerland, with regional offices in China and the United States.  Our diverse team members cultivate a collaborative and creative work environment.   Together we deliver the highest quality products and service to ensure our customers’ success.


TOFWERK is seeking a highly motivated analytical scientist to develop and demonstrate applications of our chemical ionization (CI) time-of-flight mass spectrometers (TOFMS).  The scientist will work within our Applications Department primarily in support of our Chemical Ionization (CI) Vocus product team.

Location: TOFWERK USA, Boulder, CO, USA

Tasks will include:

  • Demonstrate the capabilities of TOFWERK technology to prospective customers (also at the customer’s site)
  • Present data and represent TOFWERK internally, in conference presentations or other scientific meetings, research reports, application notes, and peer-reviewed publications.
  • Develop methods and analyses to support growth in key markets
  • Support the Marketing Department in the production of promotional material
  • Provide 3rd-level (expert) support and scientific guidance to customers
  • Work with other members of the Chemical Ionization team to improve instruments and technology
  • Work with other members of the application department to ensure that all analyses at TOFWERK utilize the best available methods and technology


  • PhD in analytical chemistry or related field
  • 4+ years of experience using mass spectrometry for applied research or sample analysis (this may include experience gained during a degree program)
  • Ability to work independently in the laboratory, including: experiment design, sample preparation, operation of scientific equipment, troubleshooting, and data interpretation
  • Interest in interacting with customers and prospective customers
  • Confident and effective communicator
  • Willingness to travel up to 30% per year for scientific conferences and customer site visits at European and international locations
  • Fluency in English

Desirable Experience and Expertise

  • Use of any of the following: PTR-MS, chemical ionization MS, TOFMS, real-time trace gas analyzers
  • Experience running prototype scientific equipment
  • Expertise in any of the following fields: semiconductor industry, ambient air monitoring

What We Offer

  • Exciting career opportunity with potential for advancement in a fast growing company
  • International and diverse environment (16+ different nationalities)
  • Flexible working hours and possibility for some home office work
  • Competitive benefits including: 401k, health insurance, personal time off, parental leave, and paid sick leave in accordance with Colorado’s HFWA.
  • Office close to the mountains in beautiful Boulder, Colorado
  • Anticipated salary range: $90k-120k 

We look forward to receiving your application at

Questions? Please contact our head of applications at

Tofwerk USA Inc. complies with all applicable federal, state, and local laws regarding equal employment opportunities (EEO) to all employees and applicants for employment. Tofwerk makes employment decisions without regard to gender, sexual orientation, transgender status, race, color, creed, religion, sex, national origin, ancestry,  religion, age, physical or mental disability, marriage to a co-worker, genetic information, retaliation for engaging in protected activity or any other status that is protected by applicable law. In addition to federal law requirements, Tofwerk complies with applicable state and local laws governing nondiscrimination in employment in every location in which it has employees including the Colorado Anti-Discrimination Act as well as the Colorado Equal Pay for Equal Work Act. This policy applies to all terms and conditions of employment, including recruiting, hiring, placement, promotion, termination, layoff, transfer, leaves of absence, compensation and training.