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Staff Scientist


Shoreview, MN, US, 55126


TSI provides trusted measurement, application guidance, and data analytics solutions that enable our customers to make informed decisions. For over 50 years our customers have relied on our products for a variety of critical applications, from environmental monitoring to occupational safety. Headquartered in the Twin Cities, we have sales offices throughout the world. We work closely with leading academic institutions and government agencies to insure the safety of people, the quality of manufactured goods, and the health of the environment.


This person will play a leading role in the evaluation and the commercialization of technology across TSI’s portfolio of existing and emerging product spaces, and will serve as an expert resource for engineers and technical staff.  Among other skills, this person requires a strong working knowledge of gas speciation techniques – especially related to electrochemical sensors, mathematical modeling tools, electronics, electro-optics, laser physics, light scattering theory, sensor technology and metrology.  Among other tasks, the applied physicist will work with multi-disciplinary design teams to define technical requirements, determine feasibility, and lay out and maintain a technology roadmap for future products.  This person will also provide consulting across the organization to address problems and recommend solutions.




  1. Support existing projects and contribute ideas to improve the company’s core competency in the areas of chemical and gas sensors, electronic sensors, instrumentation design, optical sensors, lasers, spectrometers, fluid measurements, particle counting and sizing.
  2. Evaluate existing methods and develop improved methods for sensors, measurements and instrumentation especially related to “Internet of Things (IOT)” sensor to cloud support.
  3. Participate on project teams and attend technical reviews offering insights on detection possibilities.
  4. Keep active in the fields of interest by reviewing literature, interacting with existing and potential collaborators, and networking with industrial and academic colleagues.
  5. Periodically publish papers and generate patent applications relating to the company’s measurement needs.
  6. Work with leaders in the field to develop and implement advanced measurement techniques.  This can include working from published literature or directly with developers of licensed technologies.
  7. Evaluate measurement concepts and algorithms for merit and demonstrate ability to convert theoretical concepts into cost-effective, manufacturable instruments.
  8. Generate theoretical models to simulate instrument performance and guide system design choices.
  9. Develop and execute feasibility, verification, and validation subsystem and system level test plans.
  10. Perform hands-on lab work and mentor technicians on performing tests, documenting test results, and providing a physics-based explanation of what is being tested.
  11. Complete other assignments and special projects as requested.




None assigned





  1. Education
  • Required
    • PhD in applied physics, mechanical engineering or similar field from an established research institution with 5+ years of relevant industry experience.
    • Or, Masters’ degree in applied physics, mechanical engineering or similar field from an established research institution with 8+ years of relevant industry experience.
  1. Experience
  • Required:
    • Strong background in gas measurement techniques and application (i.e. NDIR, electro-chemical, PID, GC, and FTIR).
    • Electro-optics and laser physics as applied to instrumentation.
  • Desired:
    • Instrumentation design, electronic sensors, chemical and gas sensors, optical sensors
    • Software coding experience in C, C++, C# or similar language.
    • Experience using tools such as MATLAB, Python, R, or similar to generate multidimensional models and perform data analysis and visualization.
    • Understand problems and known solutions in detecting, sizing and counting aerosol particles.
    • Familiarity with standard laboratory safety practices.
    • Experience serving as an expert resource for instrumentation development projects.
    • Demonstrated capability to lead and influence technical teams and individuals in addition to senior level management on technical direction


  1. Other Competencies Desired:
  • Strong foundation in physics principles and methods. 
  • Interest in a wide variety of subjects and areas.
  • Strong interest in technology and state-of-the-art across diverse applications.
  • Hands-on experience as well as strength in theory and modeling.
  • Excellent verbal and written communication skills.
  • Highly effective interpersonal skills.
  • Active listening skills.
  • Persuasion and negotiation skills.
  • Speaks and writes with precision and clarity in reports, email and presentations to peers, management and larger groups.
  • Tailors communication to the needs of the receiver (managers, peers, customers).
  • Ability to establish strong working relationships with employees from various departments.
  • Leads cross-functional improvement initiatives.
  • Strong organizational skills.
  • Ability to plan, organize, and work successfully on simultaneous projects.
  • Ability to employ sound judgment with little or no supervision.
  • Independently pulls together appropriate resources, methods, partners, and information to solve complex problems 


TSI employees adhere to a core set of guiding principles:


We conduct business with integrity. Therefore, we will be honest in our dealings with our customers, business partners and each other. We will be open and direct in our communications.


We believe commitment and reliability are important to our company and customers. Therefore, we will take personal accountability for our actions. We will address problems head on. We will take personal responsibility for decisions, both good and bad. We will do what we say we are going to do. We don't blame others. We aren't afraid to share bad news.


We believe the contribution of each employee is critical to our success. Therefore, we will foster an environment that promotes initiative, passion and commitment.


We value the power of collaboration. Therefore, we will foster an environment of teamwork, including being open and direct in our communication and inviting input from our coworkers, customers and business partners.


We believe in the value of our customer relationships. Therefore, we will create an environment where all employees strive to understand and meet our customer's needs. We will work diligently to exceed their expectations with every interaction.


We believe we must be professional in everything we do. Therefore, we are prepared and knowledgeable and we treat everyone with respect and courtesy.



Legal authorization to work in the United States without the need for sponsorship.  We require proof of eligibility to work in the United States.




All offers of employment in the U.S., where legally permitted, are contingent on the candidate showing proof of being fully vaccinated against COVID-19 19 (currently one dose of the Johnson & Johnson vaccine or two doses of the Pfizer or Moderna vaccine + 14 days) to pass the pre-employment requirements. Individuals with medical issues or sincerely held religious beliefs or practices that prevent them from getting the vaccine may request an exemption / reasonable accommodation from the vaccine requirement.

TSI provides trusted measurement, application guidance, and data analytics solutions that enable our global customers to make informed decisions.  We are creating a better world by helping protect people, products and the environment, as well as by optimizing research and industrial processes.

Nearest Major Market: Minneapolis

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