---
title: 'Lead Biosensor Scientist - Continuous Monitoring at Level Zero Health'
canonical: 'https://feeny.ai/job/lead-biosensor-scientist-continuous-monitoring-level-zero-health-london-xna427zawrjh'
type: 'job'
last_seen: '2026-09-15'
---

# Lead Biosensor Scientist - Continuous Monitoring at Level Zero Health

- **Company:** Level Zero Health
- **Location:** London, United Kingdom
- **Work type:** onsite
- **Posted:** 2026-08-06
- **Last confirmed live:** 2026-09-15
- **Apply:** https://jobs.lever.co/level-zero-health/f378e5ca-e58b-42b7-ac90-01468c1f014f

## Job description

## About Level Zero

Level Zero is pioneering next-generation biosensor technology for precise, real-time monitoring of critical endocrine biomarkers. Recognised as one of the top 20 startups across all categories worldwide at TechCrunch Disrupt 2024 - and backed by top-tier organisations like SOSV and Entrepreneur First - we’re pushing the boundaries of biochemistry and nanotechnology to revolutionize personalised health.

Founded by two seasoned engineers, we bring extensive experience in R&D, technical innovation, and commercial strategy to transform the way people monitor their health. Our mission is bold: to revolutionise health management by delivering clinical-grade data directly to individuals, wherever they are.

We’re seeking driven innovators to join us in pushing the boundaries of biosensing and health tech, making personalised health monitoring a reality for everyone. To achieve this ambitious vision, we’re assembling the best team in the world - dedicated to turning cutting-edge science into life-changing, real-world solutions.

## About the Role

We are seeking a lead biosensor scientist to drive the development and commercialisation of our continuous aptamer sensor platform. The ideal candidate will have proven expertise in developing continuous monitoring devices for regulated healthcare applications, demonstrated experience transitioning research-stage sensors into manufacturing-ready products, and a track record working with in vivo validation studies and large-scale analytical verification programs.

This is a full-time, in-person role primarily based in London.

## What you'll do

- 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 QMS frameworks.
- Engage directly with regulatory pathways (FDA, 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 (CMC, analytical performance dossiers) for regulatory submissions and investor communications.
- Mentor junior scientists and technicians in sensor characterisation and assay validation methodologies.

## What You Bring

- A Ph.D. degree in electrochemistry, materials science, biomedical engineering, or related discipline, with specific focus on electrochemical biosensors. Minimum 4 years of industry experience commercialising continuous monitoring or diagnostic sensor technologies.

The ideal candidate will possess expertise in the following areas:

- Deep experience in electrochemical sensor development-particularly amperometric, potentiometric, or impedance-based platforms-with demonstrated progression from research concept to clinical or commercial application.
- Proven track record managing regulatory submissions (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 working with in vivo validation studies, including study design, data interpretation, and regulatory reporting.
- Knowledge of manufacturing readiness, scale-up strategy, and GMP-compatible processes.
- Proven ability to operate in QMS-ready environments with familiarity of 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.

Nice to have:

- Experience with microneedle or transdermal ISF technologies.
- Familiarity with SELEX or aptamer discovery workflows.
- Experience with MEMS & electrode microfabrication processes.

## Who You Are

We value culture as much as we value technical expertise, creating an environment that’s equal parts collaboration, curiosity, and fun.

We’re a fast-paced, mission-driven young team on a quest to make a lasting impact, fueled by uncompromising integrity, unwavering support for one another, and the thrill of exploring uncharted territories. Our passion for excellence drives everything we do, and we welcome individuals who share our commitment to shaping the future.

If our vision excites you, here are the qualities we look for:

- You live and breathe integrity, tackling challenges with honesty and transparency
- You’re a self-starter who loves diving into the unknown, collaborating on complex problems, and taking full ownership of results
- You excel at open, clear communication and see every piece of feedback as a springboard for growth—especially in a science and data-focused environment
- You’re motivated by creating real impact, particularly when it comes to advancing human health
- You strike a balance between independence and collaboration, knowing when to seek support or invite others to join in
- You’re confident in defending your ideas, while also valuing respectful, constructive debate as a path to better solutions
- You thrive in the dynamic atmosphere of a startup, constantly evolving your skill set and fearlessly applying what you learn

## What We Offer

- A full-time role with a competitive salary and equity options, reflecting our value in your expertise and potential
- An environment where you’ll collaborate directly with the founding team at a leading biosensor startup, gaining access to industry experts and thought leaders
- The chance to grow with us, including ample opportunities for leadership, career advancement, and exploration
- Travel to New York and other potential sites for R&D purposes
- The excitement of working on cutting-edge technology, shaping strategic decisions, and driving innovation at an early-stage venture alongside a superstar team

Be Part of Our Journey If you're ready to be at the forefront of biosensing innovation and thrive in fast-paced, learning-rich environments, we'd love to hear from you.

If your skills and experience do not align perfectly with this role, yet you believe you have something unique to offer, we're keen to listen. Reach out to us with a short statement on how you can contribute and let's discuss where you might fit into our team.

## About Level Zero Health

## Company Overview
- **One-liner**: Level Zero Health is building a wearable device for continuous, real-time hormone monitoring using nanotechnology and DNA-based sensors, aiming to unlock personalized care and the world’s largest hormone-health dataset.
- **Entity Type**: Private (Pre-Seed)
- **Headquarters**: San Francisco, United States (with offices in London, United Kingdom)
- **Founded**: 2023
- **Founders**: Ula Rustamova (CEO) and Irene Jia (CTO)

## Core Business
- Primary industry: Biotechnology / MedTech / Wearable Health
- Target customers: Initially B2B (healthcare provider networks), with a focus on fertility (IVF) and testosterone replacement therapy (TRT) use cases; ultimately B2C for continuous hormone monitoring.
- Mission: “Building the world’s largest hormone-health dataset to unlock next-level insights and personalized care.”

## Products & Services
- **[Single-Use Intermittent Hormone Monitoring Patch](https://levelzerohealth.com)** – A prescription-use patch that provides intermittent hormone readings (e.g., for IVF cycle monitoring) with minimal user involvement. Designed to correlate with blood draws (>90% correlation targeted). Expected to seek FDA and CE clearance in 2026.
- **[Continuous Hormone Monitoring Wearable](https://techcrunch.com/2025/02/18/level-zero-health-banks-6-9m-to-prove-wearable-medtech-can-take-the-strain-out-of-hormone-testing/)** – The long-term “holy grail” product (target launch ~2028) that will continuously measure progesterone, estrogen, and testosterone from interstitial fluid, enabling real-time data and automated treatment adjustments.

## Market Standing
- **Valuation / Market Cap**: Not disclosed (private)
- **Key Metric**: Total funding $6.9M (oversubscribed pre-seed round closed March 2025)
- **Notable Investors/Partners**: Redalpine (lead), HAX (SOSV), Entrepreneur First (EF), industry experts
- **Growth Signals**: 
  - 61.5% headcount growth year-over-year (now ~16 employees)
  - Received Gold Medal with Congratulations from the Jury at the 45th International Exhibition of Invention in Geneva (for biosensor work)
  - Active clinical trials and correlation studies underway
  - Already has a prototype and a stepping-stone single-use product in development

## Competitive Advantages
- **Minimally invasive** – Uses tiny needles to sample interstitial fluid, avoiding painful blood draws.
- **Real-time, continuous data** – Unlike traditional finger-stick tests, the wearable can provide dynamic hormone patterns.
- **Proprietary sensing** – Combines nanotechnology with DNA-based electrochemical sensors developed by a world-class R&D team (PhD-level biosensor scientists).
- **B2B-first strategy** – Enters the market via healthcare providers, reducing go-to-market risk while building clinical evidence.

## Strategic Focus
- Immediate priority: Complete clinical trials and obtain regulatory clearance (FDA and CE marking) for the single-use intermittent patch by 2026.
- Medium-term: Demonstrate >90% correlation between interstitial fluid hormone levels and blood measurements.
- Long-term: Launch the continuous monitoring wearable (~2028) and build a large-scale hormone-health dataset to enable AI-driven personalized care.

## Why Work Here
- **Deep tech / R&D culture** – The team is heavily research-oriented (33% of staff in research roles), with backgrounds from Imperial College London, Philips, Dyson, and Palantir.
- **Mission-driven** – Tackling a massive unmet need in hormone health (fertility, TRT, contraception) with potential to change standard of care.
- **Hands-on engineering** – Open roles include Biosensor Research Scientist, Automation Engineer, Hardware Electronics Engineer, Mechanical Design Engineer, and Microsystems Engineer – all on-site in London.
- **Early-stage impact** – As a small (~16 person) team, new hires can own significant projects and influence product direction.
- **Female-founded** – Co-founded by Ula Rustamova (ex-Palantir, serial wearable founder) and Irene Jia (ex-Philips medtech R&D leader), fostering an inclusive environment.
- **Work policy**: On-site in London (UK office) with a small presence in San Francisco. All current job postings are based in London.

## Sources
1. [levelzerohealth.com](https://levelzerohealth.com)
2. [TechCrunch](https://techcrunch.com/2025/02/18/level-zero-health-banks-6-9m-to-prove-wearable-medtech-can-take-the-strain-out-of-hormone-testing/)
3. [LinkedIn](https://www.linkedin.com/company/level-zero-health)
4. [CB Insights](https://www.cbinsights.com/company/level-zero)
5. [Lever Careers](https://jobs.lever.co/level-zero-health)

## Other roles at Level Zero Health

- [Hardware Electronics Engineer](https://feeny.ai/job/hardware-electronics-engineer-level-zero-health-london-xmtj85qsvx14) — London, United Kingdom
- [Automation Engineer - Wet Lab](https://feeny.ai/job/automation-engineer-wet-lab-level-zero-health-london-05gj2axm8cjt) — London, United Kingdom
- [Research Associate - Aptamer](https://feeny.ai/job/research-associate-aptamer-level-zero-health-london-48v8j6xk6cta) — London, United Kingdom
- [Research Associate - Immunoassay](https://feeny.ai/job/research-associate-immunoassay-level-zero-health-london-mgzzwrpyfr5f) — London, United Kingdom
- [Microsystems Engineer](https://feeny.ai/job/microsystems-engineer-level-zero-health-london-4k6yrt3v74t7) — London, United Kingdom
- [Mechanical Design Engineer](https://feeny.ai/job/mechanical-design-engineer-level-zero-health-london-yqr3qcgjwazf) — London, United Kingdom
- [Biosensor Research Scientist (Electrochemical sensors)](https://feeny.ai/job/biosensor-research-scientist-electrochemical-sensors-level-zero-health-london-xq6z37nj7859) — London, United Kingdom