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Level Zero Health is a venture-backed biosensor startup (backed by SOSV and Entrepreneur First, recognized as a top 20 startup at TechCrunch Disrupt 2024) pioneering next-generation electrochemical biosensor technology for real-time monitoring of critical endocrine biomarkers. Founded by experienced engineers, the company is focused on delivering clinical-grade health data directly to individuals.
You will join as a Biosensor Research Scientist, leading R&D efforts in electrochemical biosensor design and optimization. Your responsibilities include:
• Design, prototype, and optimize electrochemical biosensor systems focused on small molecule analytes and aptamer-based recognition elements
• Apply surface chemistry and electrode modification strategies to enhance sensitivity, selectivity, stability, and performance in complex biological samples
• Translate biorecognition element–target interactions into measurable, reproducible sensor outputs through novel assay design
• Apply electrochemical methods (voltammetry, impedimetry, chronoamperometry) to characterize and evaluate biosensor function
• Use data-driven approaches including Python-based analysis and Design of Experiments (DoE) to optimize workflows
• Systematically troubleshoot technical and conceptual challenges, proposing innovative solutions
• Develop and maintain Standard Operating Procedures (SOPs) ensuring experimental reproducibility and quality compliance
• Collaborate with cross-functional teams (chemists, biologists, engineers, data scientists) to advance prototypes from concept to application
• Present results through written reports, oral presentations, and scientific publications
• Attend R&D trainings and seminars on emerging trends in hormone sensing
This is a full-time, in-person role based in London with opportunities to travel to New York and other R&D sites. You'll work directly with the founding team in a fast-paced, mission-driven environment focused on transforming personalized health monitoring.
REQUIREMENTS:
• Ph.D. in Electrochemistry, Analytical Chemistry, Biochemistry, Chemical Engineering, Materials Engineering, or related discipline with focus on aptamer biosensors (postdoctoral experience a plus)
• Proven hands-on experience in biosensor design, electrochemical techniques, and surface chemistry optimization
• Proficiency in operating electrochemical instrumentation and analyzing experimental data
• Demonstrated expertise with biorecognition elements, particularly aptamers, for biosensor applications
• Strong knowledge of small molecule detection in biological and/or environmental samples
• Practical experience handling and analyzing biofluids
• Excellent problem-solving and troubleshooting skills
• Creative mindset with ability to explore and implement novel approaches
• Strong interpersonal and communication skills with experience in multidisciplinary teams
NICE TO HAVE:
• Experience with Surface Plasmon Resonance (SPR), molecular docking, or structural modeling
• Familiarity with automation, Python scripting, and statistical design approaches (DoE)
• Track record of peer-reviewed publications, patents, or industry-led biosensor projects
