Role 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. Your work will directly inform company-level business decisions, translate into tangible advancements in our ERW technology, drive the optimization of our carbon capture processes, and contribute significantly to our ability to scale impactful climate solutions. Core working relationships - You will lead the development of the in-house model. - Work closely with the Science team to advance understanding of the ERW process. - Report to our Geochemical Modelling and Data Analysis Lead (Junyao). - Collaborate with the Head of Science & Research (Christina), Head of Carbon (Matthew), and Data Analyst (Veronica). Key Responsibilities - Model Development and Refinement: - 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. - Parameterize and validate the model using data from column, mesocosm, and field experiments. - Work with in-house scientists to design and execute new research experiments. - Simulation and Analysis: - Conduct simulations to predict feedstock weathering rates and carbon sequestration. - 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. - Predict the impact of ERW on key environmental parameters. - Collaboration and Communication: - Maintain existing and build new connections with external scientists. - Communicate model results and findings as reports and presentations. - Present research findings at academic conferences and publish in peer-reviewed journals. Qualifications - 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. Requirements - 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. Bonus Points (but not essential) - Experience with modeling watershed-scale hydrological processes. - Experience with modeling Enhanced Rock Weathering. Benefits - Salary expectations and compensation philosophy discussed openly in the first interview. - 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. - Opportunity to be autonomous and make a huge difference. - Occasional off-sites in Brazil. - Laptop to fuel your productivity. Application Process - Roughly 6 hours across 3-6 weeks from CV-screening. - Interview with Talent & People Partner or Head of People (values & motivation). - Interview with the Hiring Manager (required core skills and competencies). - (Optional) third interview. - Challenge with 3+ team members (specific task, preparation needed). - Verbal reference check & psychometric profiling. - Offer. How to Apply We kindly ask you to submit your CV in English, as this is the main language we use here at InPlanet (unless it is justified to be in Portuguese). Being an equal opportunities employer is very important to us, and we are committed to ensuring that no applicant receives less favourable treatment on the grounds of gender, age, disability, religion, belief, sexual orientation, marital status, or race.