Geochemist / MRV Specialist
Bloomineral
Start date target: Q2 2026
Mission / role summary: Lead the deployment of a robust MRV (Measurement, Reporting, Verification) carbon accounting protocol for the biomineralization process; support third-party certification (e.g. for carbon credits) and ensure the geochemical integrity of the system. Work closely with Julien (Head of Science) as a core technical function of the certification pathway.
Key Responsibilities
Design, implement, and validate MRV protocols adapted to Bloomineral’s biomineralization process (e.g. measurement of dissolved inorganic carbon, isotopic tracers, flux balances, uptake rates).
Develop sampling, monitoring, and analytical plans (lab and field) to capture carbon fluxes, process losses, uncertainty, and leak detection.
Interface with certification bodies / auditors; prepare documentation, data packages, audits, verifications.
Provide geochemical and organic chemistry insight to the process — e.g. equilibria, kinetics, speciation, precipitation, by-product formation, trace contaminants.
Work with the R&D / process teams to diagnose process deviations, mass balance anomalies, side reactions, scaling effects.
Establish quality assurance / quality control (QA/QC) protocols for analytical data, calibrations, standard materials, uncertainty propagation.
Collaborate with Julien (Head of Science) and other stakeholders to integrate MRV outcomes into the business / IP / carbon credit strategy.
What We’re Looking For
PhD, or strong postdoctoral / senior experience, in geochemistry, geochemistry / geochemistry-inspired environmental science, or a closely aligned field (e.g. environmental chemistry, isotope geochemistry).
Deep knowledge of aqueous geochemistry, carbonate systems, isotope geochemistry, speciation, kinetics.
Hands-on experience with analytical instrumentation (e.g. IC, ICP, TOC / TIC, mass spectrometry, isotopic analysis, spectrophotometry, titrations).
Prior experience in carbon cycle science, carbon accounting, greenhouse gas quantification, or MRV is highly desirable.
Understanding of uncertainty analysis, error propagation, statistical analysis of measurement data.
Ability to translate complex geochemical results into audit-grade data for third-party verification.
Excellent communication skills: ability to document protocols, present to auditors / external stakeholders, interface across teams.
Highly self-driven, hands-on, capable of working at pilot / field scale under non-ideal conditions.
Why Join Bloomineral
Advance the scientific backbone of a carbon-negative materials platform
Design and validate robust MRV methodologies for permanent CO₂ storage
Work on science with real-world industrial implications
Be part of a tight-knit, interdisciplinary team that values company culture
Operate within the French ecosystem and collaborate with leading climate science institutions
We care more about curiosity, rigor, and drive than about checking every box. If our mission resonates with you but your profile doesn’t match every single line above, apply anyway. We’re building a diverse, thoughtful team and we know great people don’t all look the same on paper. If you’re excited about turning carbon into materials the world can build with, we’d love to hear from you.