Process Scientist

SiPhox Health is building a first-of-its-kind consumer diagnostics platform that brings complex biochemical analysis into the home through integrated silicon photonics, microfluidics, embedded systems, and advanced assay development.

We are building an ambitious, multiplexed clinical-grade immunoassay menu on our at-home diagnostics platform and are seeking a Process Scientist with surface chemistry expertise, a can-do attitude, logical reasoning, and meticulous attention to detail. This is a rare opportunity to join a high-growth startup at its first major inflection point — with a validated, first-generation platform ready for commercialization and scale-up, alongside active next-generation development.

You will play a critical role in driving both research and commercialization of our diagnostic devices, operating with a high degree of independence while collaborating cross-functionally across the organization.

What You’ll Own

Surface Chemistry & Assay Development

• Design, develop, and evaluate novel surface chemistry approaches to enable immunoassay applications.
• Design and evaluate novel surface chemistry solutions on microfluidic and lab-on-chip devices, with a strong understanding of how device geometry and flow conditions influence surface performance and assay outcomes.
• Troubleshoot performance issues related to surface fouling and non-specific binding.
• Identify and resolve experimental challenges related to assay design, protocol execution, reagent selection, and surface performance.

Product & Process Development

• Define and lead product development efforts, including experimental design, prototyping, functional testing, and data analysis.
• Support the transfer of surface chemistry solutions from research into product development and manufacturing, in close collaboration with process development and operations teams.
• Contribute innovative ideas and technical insight to early-stage concept development and feasibility assessments.
• Maintain hands-on scientific leadership, setting the direction for laboratory experimentation and troubleshooting while mentoring junior scientists and guiding their technical development.
• Collaborate effectively with colleagues in product management, assay development, engineering, and manufacturing to ensure alignment and successful execution.
• Contribute technical expertise to invention disclosures and patent applications, in collaboration with the IP legal team and senior technical leadership.
• Prepare and deliver high-quality technical reports and presentations that summarize findings, support decision-making, and document development progress.

And any other assigned duties as determined by leadership.

What We’re Looking For

Required Qualifications

• PhD in Chemistry, Materials Science, Biochemistry, Bioengineering, Physics, or a closely related field.
• 6+ years of relevant industry experience in surface chemistry, materials science, or biomolecular interfaces within life sciences or diagnostics.
• Deep expertise in surface chemistry, polymer chemistry, and biomolecule–surface interactions.
• Strong publication and presentation record, with contributions to patents or novel methodologies.
• Ability to operate with a high degree of independence in experimental planning, execution, and data interpretation, requiring minimal day-to-day supervision.
• Strong scientific judgment to extrapolate from existing expertise and address novel or ambiguous technical challenges.
• Proactive mindset to identify risks, knowledge gaps, and opportunities, and to propose data-driven paths forward that shape project scope and organizational priorities.
• Clear, purposeful communication across disciplines to enable alignment, informed decisions, and efficient collaboration.
• Authorization to work in the U.S. without sponsorship.

Preferred Qualifications

• Familiarity with microfluidic device design principles, including channel geometry, surface-to-volume ratios, and flow dynamics; experience with device fabrication or commercial lab-on-chip platforms is a plus.
• Familiarity with surface analytical techniques such as AFM, ellipsometry, FTIR, SEM, TOF-SIMS, and XPS.
• Familiarity with manufacturing constraints, process transfer,…