Full-Time

Lead Biosensor Scientist

Continuous Monitoring

Level Zero Health

Level Zero Health

11-50 employees

Wearable biosensor for continuous hormone monitoring

No salary listed

London, UK

In Person

Travel to New York and other potential sites may be required for research and development purposes.

PhD

Category
Biology & Biotech (1)

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Requirements
  • A Ph.D. degree in electrochemistry, materials science, biomedical engineering, or a related discipline, with a specific focus on electrochemical biosensors.
  • At least 4 years of industry experience commercialising continuous monitoring or diagnostic sensor technologies.
  • Deep experience in electrochemical sensor development, particularly amperometric, potentiometric, or impedance-based platforms, with progression from research concept to clinical or commercial application.
  • A proven track record managing regulatory submissions, including FDA 510(k), De Novo, or CE marking, for continuous monitoring devices.
  • Strong experience designing and executing large-scale analytical verification studies, including stability, accuracy, precision, and matrix interference assessments.
  • Demonstrated experience with in vivo validation studies, including study design, data interpretation, and regulatory reporting.
  • Knowledge of manufacturing readiness, scale-up strategy, and Good Manufacturing Practice-compatible processes.
  • Proven ability to operate in quality management system-ready environments, with familiarity with ISO 13485, design controls, and regulatory compliance frameworks.
  • Understanding of biocompatibility, sterility, and shelf-life requirements for implantable or skin-worn continuous devices.
  • Proficiency in surface chemistry, material selection, and biointerface optimisation.
  • Expertise in aptamer-based biorecognition elements and aptamer optimisation for continuous monitoring applications.
Responsibilities
  • Lead the development and optimisation of electrochemical continuous sensor systems from bench concept through manufacturing readiness.
  • Design and execute large-scale analytical verification studies, including multi-parameter performance characterisation, stability assessments, and biocompatibility validation.
  • Oversee in vivo validation studies in human subjects and troubleshoot sensor performance in clinical settings.
  • Define manufacturing processes, material specifications, and quality control parameters aligned with regulatory expectations and quality management system frameworks.
  • Engage directly with regulatory pathways, including the FDA and EMA, to define performance specifications and shape submission strategy.
  • Lead cross-functional efforts with electrochemistry, microfabrication, and manufacturing to translate designs into scalable production.
  • Develop technical documentation packages, including CMC and analytical performance dossiers, for regulatory submissions and investor communications.
  • Mentor junior scientists and technicians in sensor characterisation and assay validation methodologies.
Desired Qualifications
  • Experience with microneedle or transdermal interstitial fluid technologies.
  • Familiarity with SELEX or aptamer discovery workflows.
  • Experience with MEMS and electrode microfabrication processes.

Level Zero Health develops a biosensor platform for remote, continuous hormone monitoring. Its core product is a minimally invasive arm patch that uses DNA-based biosensors and microneedles to measure hormones such as estrogen, progesterone, cortisol, and testosterone in interstitial fluid. The patch attaches to the skin, accesses interstitial fluid with microneedles, and converts hormone levels into electronic signals sent to a connected system for real-time tracking integrated into clinical workflows. The company differentiates itself with continuous, real-time data from a wearable platform focused on women's health, validated at 98% accuracy in simulated clinical ranges, and pursuing FDA and CE approvals to enable IVF, menopause management, and testosterone replacement therapy applications. Its goal is to move hormone tracking from infrequent tests to continuous data streams to support better clinical decisions, with plans to expand into consumer and pharmaceutical markets.

Company Size

11-50

Company Stage

Seed

Total Funding

$6.9M

Headquarters

San Francisco, California

Founded

2023

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Simplify Jobs

Simplify's Take

What believers are saying

  • April 2026 LinkedIn update said clinical-grade hormone measurement without blood draws works.
  • February 2025 funding closed at $6.9 million from Redalpine, HAX, and EF.
  • August 2026 reporting says major IVF clinics signed $3 million letters of intent.

What critics are saying

  • Single-use intermittent patch needs FDA and CE clearance before 2026 revenue.
  • Continuous wearable slips to 2028, leaving competitors time to capture clinics first.
  • SPRIND backs seven rivals, including Biomarq Health and PHOEBE, in parallel.

What makes Level Zero Health unique

  • DNA-based microneedle patch measures progesterone, estrogen, cortisol, and testosterone from interstitial fluid.
  • SPRIND selected Level Zero Health in July 2026 for its €40 million challenge.
  • CEO Ula Rustamova and CTO Irene Jia combine Palantir software and Philips devices.

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Benefits

Company Equity

Growth & Insights and Company News

Headcount

6 month growth

29%

1 year growth

29%

2 year growth

57%
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