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Level Zero Health

Wearable biosensor for continuous hormone monitoring

Hardware Electronics Engineer

Full-TimeUpdated on 10/23/2026
No salary listed
Mid, Senior
Master's
London, UK
In PersonOnsite in London; travel to New York and other potential sites for R&D purposes.
Hardware EngineeringBoard & Electronics Design

About the job

Requirements
  • A Master's degree or equivalent experience in Electronic Engineering or a closely related discipline, with 3–5 years of industry experience developing electronic products from concept through prototype and into manufacture.
  • Strong experience designing mixed-signal electronic systems, including analogue, digital and power electronics.
  • Experience with schematic capture and multi-layer PCB design using Altium Designer or an equivalent ECAD package.
  • Experience selecting components, designing circuits and integrating commercially available modules into complete electronic systems.
  • Experience designing battery-powered embedded systems, including battery charging, power regulation and power management.
  • Experience designing interfaces for motors, pumps, LEDs, cameras, sensors and other peripheral devices.
  • Strong hardware debugging skills using oscilloscopes, logic analysers, power analysers and other laboratory equipment.
  • Experience with PCB bring-up, fault finding and hardware verification.
  • Understanding of EMC/EMI, signal integrity and design for reliability.
  • Experience working with contract manufacturers and supporting PCB assembly and prototype builds.
  • Experience planning technical work, managing electronics risks and taking ownership of engineering deliverables.
  • Excellent communication skills and the ability to work effectively within a multidisciplinary engineering team.
  • A proactive mindset and willingness to take ownership of challenging technical problems.
Responsibilities
  • Take technical ownership of the electronics architecture for the medical device, driving development from early concept through prototype, verification and product release.
  • Design mixed-signal electronic systems integrating optical modules, battery management, power electronics, motor drivers, user interface electronics and supporting sensors.
  • Design schematic capture and multi-layer PCBs, select appropriate components and integrate commercial modules into robust product designs.
  • Develop and validate battery charging, power management and low-power system architectures for portable medical devices.
  • Design interfaces for miniature cameras, LEDs, pumps, motors and user interface hardware, including buttons, indicators and status LEDs.
  • Bring up, debug and validate prototype hardware using laboratory test equipment, identify root causes and implement robust design improvements.
  • Work closely with firmware, mechanical, optical and systems engineers to ensure seamless hardware integration across the product.
  • Plan and scope electronics development activities, identify technical risks, define development priorities and estimate work required to achieve project milestones.
  • Own electronics design documentation, including schematics, design calculations, test plans, verification reports and manufacturing documentation.
  • Lead electronics risk management activities, maintain Design FMEAs and support system-level risk analysis throughout product development.
  • Work with PCB manufacturers, assembly houses and component suppliers to support prototype builds, design for manufacture and design for test.
  • Identify and establish the laboratory equipment, software tools, suppliers and development processes required to build an electronics function.
  • Contribute as a hands-on individual contributor while helping shape the future electronics capability as the team grows.
Desired Qualifications
  • Experience developing electronics for medical devices or regulated products.
  • Experience with optical systems, including cameras, LEDs, photodiodes or imaging hardware.
  • Experience designing motor driver circuits or fluidic/pump control systems.
  • Experience with USB, USB-C or battery charging ICs.
  • Familiarity with embedded firmware development and debugging.
  • Knowledge of Design FMEA, risk management and design verification within regulated product development.
  • Experience supporting Design for Manufacture, Design for Assembly and Design for Test.
  • Familiarity with standards such as IEC 60601, IEC 62304 or ISO 14971.
  • Experience working closely with external PCB manufacturers, assembly partners and component suppliers.
  • Prior work in a start-up or small company environment.

About the company

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

London, United Kingdom

Founded

2023

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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

35%

1 year growth

27%

2 year growth

53%
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