Geochemical Modeler Jobs

InPlanet

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Job Description:

We are seeking a highly skilled and motivated Geochemical Modeler to join our team. You will play a crucial role in developing and refining our in-house model to simulate the enhanced rock weathering (ERW) process from the soil to the ocean. This role will involve modifying, incorporating and improving existing reactive transport, agro-ecosystem, and hydrological models to accurately predict weathering rates, carbon sequestration, and environmental impacts of ERW specific to Brazilian conditions.

Job Responsibility:

Develop and maintain an in-house model for simulating enhanced rock weathering process in the near-field (soil) and far-field (groundwater, surface water, ocean) zones based on existing reactive transport, agro-ecosystem, and hydrological models
Parameterize and validate the model using data from column, mesocosm, and field experiments to accurately reflect the specific feedstock, soil, climate, and geographic conditions of our projects
Work with in-house scientists to design and execute new research experiments to understand key mechanisms of the ERW process, which can be fed into the model development
Conduct simulations to predict feedstock weathering rates, carbon sequestration, and the spatial and temporal transport of weathering products from soil to the ocean
Conduct field-scale water flux estimations to support porewater-based carbon dioxide removal (CDR) quantification
Analyze simulation results to understand the sensitivity of ERW performance to operational and environmental changes for optimal deployment strategy
Predict the impact of ERW on key environmental parameters, including soil fertility, water quality, and crop growth
Maintain existing and build new connections with external scientist for collaborative model development
Communicate model results and findings as reports and presentations to internal and external stakeholders
Present research findings at academic conferences and publish in peer-reviewed journals

Requirements:

Strong understanding of geochemical processes and hydrological dynamics in the soil system
Strong programming skills (Python or Fortran) for model development
Experience running models using high-performance computing resources
Excellent analytical and problem-solving skills
Strong written and verbal communication skills
Ability to work independently and collaboratively in a dynamic research-oriented startup environment
PhD (or relevant experience) in Soil Science, Environmental Science, Environmental Engineering, Hydrology, Geology, Geochemistry, Earth Sciences, or a related field
3+ years of proven experience in developing, modifying, applying reactive transport, agro-ecosystem, and/or hydrological models

Nice to have:

Experience with modeling watershed-scale hydrological processes
Experience with modeling Enhanced Rock Weathering

What we offer:

Share options to make you feel like an owner
Home Office Budget
Fully Remote: Join us from anywhere within the CET (- 4/5-hour time zones)
Personal development budget
Language Programme Monthly Allowance
34+ days annual leave
The opportunity to be autonomous, make a huge difference and belong to a vision
Occasional off-sites in Brazil
Laptop to fuel your productivity

Additional Information:

Job Posted:
December 09, 2025

Work Type:

Remote work

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Geochemical Modeler