This role evaluates the nature and distribution of rock properties and formation fluids across the life cycle of our clients’ reservoirs — from log analysis and core data through to the models that inform reserves and development decisions. We’re looking for rigorous petrophysical judgment paired with real versatility: someone who tracks new interpretation methods and technologies as closely as they apply proven ones, and who’s ready to help bring AI-assisted tools into how petrophysics gets done at Ad Terra. What You'll Do Data acquisition: • Design well data acquisition plans • Adapt well-log and data collection methods Data processing: • Define suitable well measurements and data-processing methods • Prepare and process well data for petrophysical interpretation • Load, gather, transfer, and organize well data • Conduct quality control of data • Populate and maintain well databases Data interpretation: • Conduct detailed analysis of wireline logs, core data, and seismic attributes • Build and develop petrophysical and geo-mechanical models • Perform volumetric calculations to estimate reserves and resources • Process and interpret borehole imagery • Conduct simulations to model fluid behavior • Develop and improve techniques for formation evaluations from cores and cuttings • Describe log-derived mechanical properties • Characterize conventional and unconventional resources • Resolve interpretation issues • Run forecasts AI & Digital Tools: • Apply and help develop AI/ML-assisted log QC, facies prediction, and automated petrophysical interpretation workflows • Evaluate and pilot emerging AI tools (e.g., automated log correlation, anomaly detection) to improve interpretation efficiency • Contribute petrophysical domain expertise to Ad Terra's digital subsurface intelligence initiatives Projects: • Complete tasks in areas of expertise • Document progress, setbacks, and new processes • Establish clear and relevant timesheets Reporting: • Generate and write reports, create maps, tables, figures, and summaries • Review documents, studies, models, and reports prepared by peers • Report results to managers, clients, partners, etc. What You'll Bring • University degree (MSc or PhD) in Geoscience, Petroleum Engineering or a related field • Experience as a Petrophysicist (2-5 years) • Minimum 2–5 years of hands-on Oil & Gas industry experience (exploration, development, or production) — mandatory • In-depth knowledge of petrophysical principles and practices • Proficient with petrophysical programs such as Petrel, Geolog, Techlog, etc. • Comfortable working with and developing AI tools (e.g., Python scripting, ML-assisted log QC or facies prediction) to support and automate petrophysical interpretation • Good understanding of the oil and gas industry • Familiarity with PETRONAS Technical Standards (PTS) and the Malaysian upstream regulatory framework is an advantage; professional body registration a plus • Excellent communication and presentation skills • Strong numerical and literacy skills • Systematic and methodical approach • Able to work efficiently under pressure • Rigor and organization • Proficient with Microsoft Office Suite • Fluent in English (excellent verbal and written proficiency) What We Offer • Permanent, full-time local contract with statutory EPF / SOCSO / EIS contributions • Medical and insurance coverage; competitive annual leave • Exposure to international multi-resource projects across Ad Terra's platform (Europe, Canada, Chile, Cyprus, Asia-Pacific) Thank you for considering joining our team. We look forward to reviewing your application! To apply, please submit your CV and a cover letter outlining your relevant experience

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