Product Development Engineer II.

The Role

We’re looking for a Product Development Engineer II to help turn our PFAS sensor system into a commercial minimum viable product (MVP). Day-to-day work mostly involves coating, thin-layer deposition, and analysis on our test-strip platform. You’ll build, test, and improve the system across all areas during field testing and customer validation, working closely with the CEO and our current product development engineer in our Watertown lab.

What You’ll Do

Hands-On R&D & System Optimization: Run and own the core workflows (coating, thin-layer deposition, analysis), plan and execute the day-to-day optimization experiments, and deliver improvements in system performance and reproducibility.

Commercial MVP, Testing & Field Validation: Build and test MVP units with the team, run structured test series against our commercial specifications, close the remaining gaps, and support field tests and customer validation runs.

Disposables, Hardware & Software: Take on tasks across all three areas based on team priorities, own agreed subsystems end to end, and deliver design improvements that measurably improve scalability and manufacturability.

Team & Company Building: Document your work to the team standard, help improve our experimental and documentation practices, support interviews and onboarding as the team grows, and play an active role in shaping our culture.

What We’re Looking For

Many strong candidates don’t fit a standard blueprint. If you bring relevant experience and are excited about what we’re building, we encourage you to apply even if you don’t check every box.

Required:

•        Bachelor’s or Master’s degree in chemical engineering, mechanical engineering, or a related field (a chemistry background also works; engineering preferred)

•        Ca. 3-5 years of industry experience, with room in both directions for the right person

•        Hands-on experience with prototype development and iterative testing

•        Experience with coating or thin-film deposition techniques and material characterization

Nice to Have:

•        Experience working with vendors or contract manufacturers/CROs

•        3D printing (e.g. printing casings and fixtures)

•        Analytical instrumentation (FTIR, GC-MS, UV-Vis, etc.)

•        Exposure to sensor development from early stage to product

Working Style & Character:

•        Team-player who cares about and wants to contribute to a great team culture as we grow

•        Broad generalist who enjoys working across disciplines in a small team

•        Takes initiative and develops autonomy quickly

•        Highly organized, good at prioritization, and clean in documentation

•        Inquisitive, fast learner, able to receive and act on constructive feedback

•        Comfortable with startup pace and ambiguity; prior startup experience is a plus, not a requirement

Logistics & Compensation

•        Location: In-person at our lab in Watertown, MA (remote handled pragmatically for computer-work days when work allows)

•        Start date: As soon as possible

•        Compensation: $100K to $115K/year, plus equity (employee stock options) and benefits

How to Apply

Please submit your resume and include a few sentences about why you’re excited about Fluorityx and how this role fits your experience. This is also an opportunity to highlight experiences that you feel are particularly relevant for the role. This doesn’t need to be a formal cover letter; we just want to understand what motivates you.