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Golder Associates GoldSim Modeler (Engineer) in Lakewood, Colorado

At Golder, we thrive on challenges.

Golder is not just a place to work, it is a promise of a living, dynamic environment where people collaborate, innovate, build enduring relationships, excel, and grow professionally in a strong culture of ownership.

Do you have the desire to learn? The drive to excel and thrive in an engaged, collaborative environment?

Golder is seeking an Intermediate GoldSim Modeler . This position can be located remotely or in one of the following offices: Denver, CO, Salt Lake City, UT, Redmond, WA, Tucson, AZ, or Reno, NV.

Salary range : $65,520 - $98,280

Responsibilities of the role will include:

  • Develop, review, and lead GoldSim water balance and water quality models for the mining industry.

  • Develop and review conceptual models and basis-of-design documents.

  • Present and discuss technical details and project results with clients and stakeholders.

  • Plan, manage and support multiple projects.

  • Write and review technical reports.

  • Perform business development activities, including client contact/presentations, proposal writing and professional society participation.

  • Serve as an internal technical resource and provide guidance and mentorship to junior-level staff.

  • Collaborate with multi-disciplinary teams to complete environmental impact assessments for large mining operations.


  • Bachelor’s degree in Civil, Water Resources, Environmental Engineering or a similar field of study.

  • Strong written and verbal communication skills (including making presentations, leading discussions, technical documentation and proposal/report writing).

  • Strong attention to detail with excellent analytical and judgment capabilities.

  • Strong organizational and time management skills.

  • Ability to travel occasionally (including internationally, typically less than one-week duration).


  • Master’s degree in Civil, Water Resources, or Environmental Engineering.

  • Current registration, or eligibility to register as a Professional Engineer.

  • At least 3 years of GoldSim model development experience, ideally in a mine water management as a consultant.

  • Experience building GoldSim-based water quality models in addition to water balance models.

  • Experience with scripting languages such as R or python and the ability to manage and manipulate large datasets.

  • Experience with transport and reactivity-based modeling codes such as PHREEQC, The Geochemist’s Workbench, and HYDRUS.

  • Experience using AutoCAD and GIS mapping software.

  • Fluency in French or Spanish.

*Submittal of a cover letter with your application is appreciated.*

Additional Requirement:

  • Successful applicant must be able to provide proof of vaccination against COVID-19 prior to their start date or prior to December 8, 2021, whichever is later, or be granted an exemption based on a disability or sincerely-held religious belief. If you cannot receive the vaccine because of a disability or a sincerely-held religious belief, you may submit an accommodation request ( to the Golder, A Member of WSP, Equal Employment Opportunity Office. Learn more about the COVID-19 vaccination here - .

Your benefits at Golder will include:

  • Competitive benefits, some of which may require meeting eligibility criteria:

  • medical, dental, vision, HSA, dependent care FSA, 401k with company match structure, group term life insurance, short- and long-term disability, paid time off including holidays, vacation and sick leave banks, employee assistance program

  • Opportunity to deepen your expertise in a dynamic work environment;

  • Innovative and collaborative multidisciplinary projects; and,

  • On the job training, mentoring, and coaching

Renowned for technical excellence, Golder, a member of WSP, is a leading global specialized engineering and consulting organization with over 60 years of successful service to its clients. By joining forces with WSP in 2021, Golder is now part of a 14,000-person strong earth and environment practice, providing engineering, remediation, regulatory & compliance, design, and environmental services on projects that span all seven continents. Our professionals are driven by a passion to deliver results, offering unique specialized skills to address the ever-evolving challenges that earth, environment, and energy present to clients across the infrastructure, mining, oil & gas, manufacturing, and power sectors.

Equal Opportunity Employment Statement

Golder is an Equal Opportunity/Affirmative Action employer. All qualified applicants will receive consideration for employment without regard to age, color, creed, gender, gender identity or expression, sex, genetic information, marital status, national origin, race, religion, protected veteran status, sexual orientation, citizenship status, individuals with disabilities or other characteristics protected by law. Golder is a background screening, drug-free workplace.


Title: GoldSim Modeler (Engineer)

Location: CO-Lakewood

Requisition ID: 21002445