Reservoir Engineer, Modeling

Fervo Energy • Golden, CO

3d • $140,000 - $200,000 • Hybrid

About The Position

Fervo Energy is hiring a Reservoir Engineer focused on reservoir modeling and history matching. The role owns calibration of subsurface models against field performance, including stimulation-induced fracture growth and reservoir production, pressure, and thermal response. The engineer will build, calibrate, and maintain fracture and reservoir simulation models; diagnose mismatches between simulations and observations; and define testing and data acquisition programs that improve model calibration and predictive accuracy.

The role works closely with Completions, Drilling and Completions (D&C), Reservoir, Data Science, Resource, and Exploration teams to align stimulation design, data acquisition, and simulation workflows. It also develops repeatable modeling and automation workflows, documents calibration methods and standards, and uses history-matched models to support forecasts and operational decisions. The position has a hybrid schedule, with three days per week in the office at one of Fervo Energy’s listed locations: Houston, Golden, Reno, Oakland, or Salt Lake City.

Requirements

• B.S. in Engineering, such as Petroleum, Mechanical, Chemical, or a related discipline.
• At least 5 years of experience in reservoir engineering, reservoir simulation, or hydraulic fracture modeling; an advanced degree may be considered in lieu of experience.
• Hands-on experience with reservoir and/or fracture simulation software such as ResFrac, CMG, Eclipse, or comparable tools.
• Experience history matching production, pressure, and/or fracture-growth data against simulation models.
• Strong understanding of fluid flow in fractured or porous media and hydraulic fracture mechanics.
• Experience interpreting pressure transient and completion diagnostic data, including DFITs, PLT/DTS/DAS, tracer, or microseismic data.
• Strong analytical and programming or scripting skills, such as Python, to support model calibration and workflow automation.
• Strong analytical, synthesis, and communication skills, including the ability to explain model uncertainty clearly.

Nice To Haves

• Experience in geothermal reservoir engineering, enhanced geothermal systems (EGS), or unconventional resource development.
• Direct experience with ResFrac or other coupled geomechanics/fracture-reservoir simulators.
• Working knowledge of fracture mechanics and in-situ stress, including natural-fracture interactions, to guide fracture-growth and stress-shadow modeling.
• Familiarity with fracturing-fluid rheology and its impact on fracture geometry, height growth, and proppant placement.
• Experience designing diagnostic testing programs to support model calibration, including forward-looking crossflow test design for new prospects.
• Experience integrating multiple diagnostic datasets, such as DAS/DTS, tracer, microseismic, and PLT, into a single calibration workflow.
• Experience with assisted or automated history-matching techniques, such as ensemble methods or machine-learning-assisted calibration.
• Ability to translate detailed technical analysis into executive-level summaries.

Responsibilities

• Build and calibrate hydraulic fracture growth models against observed stimulation data.
• History-match fracture height, length, and complexity using treatment pressure, microseismic, DAS/DTS, and tracer data.
• Characterize in-situ stress and natural-fracture interactions using fracture mechanics to guide fracture-growth and stress-shadow modeling.
• Account for fracturing-fluid rheology and its effects on fracture width, height growth, and proppant transport.
• Incorporate completion design parameters into fracture models and iterate as new stimulation data becomes available.
• Translate calibrated fracture models into simulation-ready fracture network representations for reservoir modeling.
• Quantify uncertainty in fracture geometry and connectivity and communicate its impact on well and pad performance predictions.
• Build and maintain full-field and sector-scale reservoir simulation models of fractured EGS reservoirs.
• History-match production and injection rates, bottom-hole pressures, and thermal response against field data.
• Adjust reservoir model parameters to improve matches across wells and pads.
• Diagnose history-match mismatches and distinguish model, data, and operational sources of error.
• Use history-matched models to inform production forecasts, well spacing, and injection and production strategies.
• Design diagnostic and surveillance testing programs to improve history-matching accuracy, including pressure transient, interference, tracer, DFIT, PLT, DTS, and DAS testing.
• Identify data gaps that limit model calibration and prioritize acquisition programs to address them.
• Define minimum viable data requirements per well and pad within cost and schedule constraints.
• Evaluate testing protocols against realized model performance and refine programs based on lessons learned.
• Extend calibrated models to new prospects, forecast anticipated crossflow behavior, and help design crossflow testing programs in coordination with Resource and Exploration teams.
• Build repeatable workflows, including automation and scripting, to accelerate history-matching and testing feedback loops.
• Partner with Completions and D&C to align stimulation design changes with model predictions and observed outcomes.
• Partner with Reservoir and Resource teams to ensure production, injection, and pressure data support ongoing calibration.
• Document modeling methodologies and calibration standards to promote consistency across projects.
• Work independently and objectively while maintaining collaborative relationships; provide data-grounded recommendations, adapt to changing priorities, and contribute to transparent, consistent, and continuously improving practices.

Benefits

• Medical, dental, and vision plan options.
• Employer-paid basic life insurance and short-term and long-term disability coverage.
• 401(k) plan with up to 6% employer match.
• Flexible paid time off and paid parental leave.
• Family-building, fertility, hormonal health, pregnancy, postpartum, and parenting support through Carrot.
• Dependent care FSA for eligible child and elder care expenses.
• Annual Lifestyle Spending Account for eligible wellness expenses, including fitness, financial planning, pet insurance, and pet care.
• Employee ownership opportunities through an Employee Stock Purchase Program, stock option grants, and bonus opportunities for eligible roles.
• Incentive stock options and a bonus incentive program.

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level