<div dir="ltr"><div><p class="MsoNormal" style="margin:0cm;font-size:12pt;font-family:Aptos,sans-serif"><b>Postdoc in geomicrobiology modelling: microbial dormancy
in Earth's ecosystems and biogeochemistry M/F</b></p>
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<p class="MsoNormal" style="margin:0cm;font-size:12pt;font-family:Aptos,sans-serif"><b>Apply: </b><a href="https://emploi.cnrs.fr/Offres/CDD/UMR7294-SYLJOV-024/Default.aspx?lang=EN" style="color:rgb(70,120,134)">https://emploi.cnrs.fr/Offres/CDD/UMR7294-SYLJOV-024/Default.aspx?lang=EN</a><b>
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<p class="MsoNormal" style="margin:0cm;font-size:12pt;font-family:Aptos,sans-serif"><b>Application Deadline :</b> 30 September 2025
23:59:00 Paris time</p>
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<p class="MsoNormal" style="margin:0cm;font-size:12pt;font-family:Aptos,sans-serif"><b>Reference :</b> UMR7294-SYLJOV-024<br>
<b>Workplace :</b> Marseille, France<br>
<b>Contract Period :</b> 24 months<br>
<b>Expected date of employment :</b> 1 February 2026<br>
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<p class="MsoNormal" style="margin:0cm;font-size:12pt;font-family:Aptos,sans-serif"><b>Missions</b></p>
<p class="MsoNormal" style="margin:0cm;font-size:12pt;font-family:Aptos,sans-serif">We are seeking postdoc (M/F) in modelling of geomicrobiology
(PhD-level position) in Marseille, France, to work on the European Research
Council funded Starting Grant project 'SIESTA: The Role of Microbial Dormancy
as an Ecological and Biogeochemical Regulator on Earth'. The position is under
the supervision of Dr. James Bradley (<a href="https://www.jbradleylab.com/">https://www.jbradleylab.com/</a>). The
recruited person will work with the principal investigator and will participate
in theoretical and numerical modelling work, as part of a project team that
includes doctoral students and technical staff. The main objective of this
postdoc position is (1) to develop theoretical modelling approaches
(bioenergetics, thermodynamics, ecological modelling, individual-based
modelling) to investigate the activity and dormancy of microbial communities in
extreme environments (including the cryosphere), and (2) to link the activity
and dormancy of these communities to ecological and biogeochemical processes.
This work will feed into wider project goals to understand the role of dormancy
as a regulator of biogeochemical cycles, and to link dormancy to the emergence,
survival and evolution of microbial populations.<br>
<br>
Applicants should hold a Ph.D. in in a relevant natural science discipline,
have specialist knowledge and demonstrable experience in numerical,
bioenergetic, ecosystem and/or habitability modelling, strong mathematical
skills and programming experience, and experience with analysis of
observational and/or model-derived datasets. The CDD is offered for 2 years and
is renewable on an annual basis, contingent on satisfactory performance
evaluations. We expect a flexible start date from around February 2026,
adjustable based on the candidate's availability and the requirements of the
project.<br>
<br>
Applicants should submit IN ENGLISH 1) a current curriculum vitae; 2) a cover
letter (maximum 2 pages) stating their motivation for applying to this
position, research interests, relevant skills, training and experience; 3)
contact information for at least two and up to three professional references.
Please combine these documents into a single PDF. Important: Please also email
Dr. James Bradley (<a href="mailto:james.bradley@mio.osupytheas.fr">james.bradley@mio.osupytheas.fr</a>) to confirm your intention
to apply. Apply as soon as possible. The application window will remain open
for three weeks after the date that it is advertised online, and on a rolling
basis thereafter (depending on whether or not a candidate has been selected).
Contact Dr James Bradley (<a href="mailto:james.bradley@mio.osupytheas.fr">james.bradley@mio.osupytheas.fr</a>) with any questions.</p>
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<p class="MsoNormal" style="margin:0cm;font-size:12pt;font-family:Aptos,sans-serif"><b>Activities</b></p>
<p class="MsoNormal" style="margin:0cm;font-size:12pt;font-family:Aptos,sans-serif">The postdoc (M/F) will contribute to different research
aspects on the project:</p>
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</span></span>Develop, implement and apply ecological
modelling tools (bioenergetics, thermodynamics, ecological modelling,
individual-based modelling, biogeochemical modelling) to study the activity and
dormancy of microorganisms.</p>
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</span></span>Determine energetic and environmental parameters
limiting the activity, dormancy and survival of microbial communities.</p>
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</span></span>Determine and assess catabolic and anabolic
activity as well as plausible rates of energy-generating and energy-requiring
reactions for active and dormant microorganisms.</p>
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</span></span>Connect the physicochemical characteristics of
an environment (and the changes it is subject to) with the activity (and
dormancy) of its resident microbial population.</p>
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</span></span>Assess the extent to which activity and dormancy
of microorganisms (and transitions between active/dormant states) regulate
ecological processes (biomass, diversity, function) and biogeochemistry
(geochemical composition and elemental fluxes).</p>
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</span></span>Publish (as lead and co-author) in leading
academic journals, participate in scientific conferences, outreach activities.</p>
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</span></span>Collate and catalogue data for deposition and
archiving in data repositories.</p>
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<p class="MsoNormal" style="margin:0cm;font-size:12pt;font-family:Aptos,sans-serif"><b>Skills</b></p>
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</span></span>PhD (by time of appointment) in a relevant
natural science discipline, and a track-record of research productivity,
including peer-reviewed publications.</p>
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</span></span>Specialist knowledge and demonstrable experience
in numerical, bioenergetic, ecosystem and/or habitability modelling.</p>
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</span></span>Strong mathematical skills and programming
experience.<br>
Experience with analysis of observational and/or model-derived datasets.</p>
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</span></span>Strong understanding of microbial processes in
the context of microbial ecology, habitability, astrobiology and/or extreme
environments.</p>
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</span></span>Write and execute code in R, Python, GitHub
etc., high-performance computing.</p>
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</span></span>Evidence of ability to publish research results
in international peer-reviewed journals.</p>
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</span></span>Ability to organize and prioritize own work, and
organize research within the project timetable.</p>
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</span></span>Strong oral and written communication skills in
English.</p>
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</span></span>Ability to work independently and flexibly.</p>
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</span></span>Ability to work harmoniously as part of a team.</p>
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<p class="MsoNormal" style="margin:0cm;font-size:12pt;font-family:Aptos,sans-serif"><b>Work Context</b></p>
<p class="MsoNormal" style="margin:0cm;font-size:12pt;font-family:Aptos,sans-serif">The successful candidate (M/F) will work at the
Mediterranean Institute of Oceanology (MIO), in Marseille Luminy. The MIO is an
Oceanography research laboratory of the Universities of Aix-Marseille, Toulon,
CNRS and IRD. It is integrated into OSU Pythéas. Its objectives are to better
understand the ocean system and its evolution in response to global change. It
constitutes a center of expertise in biology, ecology, biodiversity,
microbiology, fisheries, physics, chemistry, biogeochemistry and marine sedimentology.
Its frameworks are the world ocean, its interfaces with the continent, the
atmosphere and the sediment. The MIO has more than 250 people, including around
a hundred researchers (CNRS, IRD) and teacher-researchers from universities,
around sixty engineers and technicians, more than 50 doctoral students and an
administrative team serving research. The candidate (M/F) will join the MEB
team, working in the ERC project SIESTA led by James Bradley. The successful
candidate (M/F) will enjoy a vibrant research group, access to excellent
research facilities and platforms at the Mediterranean Institute of
Oceanography and Aix-Marseille University, and be embedded in a team committed
to high scientific integrity, open and reproducible science, and promoting inclusivity.
Marseille is an affordable, vibrant and historic city on the Mediterranean
coast, with culinary excellence, diverse cultural experiences, and a large
international community. The Mediterranean Institute of Oceanography, on the
Luminy campus of Aix-Marseille Université, is surrounded by nature being
nestled among the spectacular Calanques National Park.</p>
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<p class="MsoNormal" style="margin:0cm;font-size:12pt;font-family:Aptos,sans-serif"><b>Constraints and risks</b></p>
<p class="MsoNormal" style="margin:0cm;font-size:12pt;font-family:Aptos,sans-serif">The work will involve travel to scientific meetings for
dissemination of results. The work may (depending on project needs and keenness
of the candidate) involve travel and fieldwork in remote (glaciated, Arctic)
environments for field collection of samples.</p>
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