CESM Software Engineer I

## CESM Software Engineer IApplyremote type:
Location Type:
Hybrid Option Available (Mix of in-person and remote) locations:
Boulder, COtime type:
Full time posted on:
Posted Todayjob requisition :
REQ-#
** Position Type:
** Regular#
** Visa Sponsored Job:
** Yes
* * Relocation Assistance Eligible:
** Yes  
** Hiring Range:
** 66,707.00 USD - 83,383.00 USD
* Final salary and rates are based on education, experience, and skills relevant to the role.
* ** Final date to receive applications at 12:00am MST on:**  # About the Role This position will focus on modernizing the software in CESM, a world-leading Earth system model, towards new architectures, infrastructure and computational approaches. The work will require some knowledge of algorithms, data structures, software development and hardware platforms, as well as attention to detail, and will emphasize problem solving and rapid development for the scientific community we serve.

The position will interact with our Community Software Facility, as well as a variety of software engineers and scientific leadership on targeted, strategic priorities.
This Software Engineer position is part of the computer engineering group within NSF NCAR's CGD Laboratory. CGD is home to approximately 130 staff members, along with visiting researchers from around the world. Together, they advance the understanding of Earth system variability and change while addressing the risks of environmental change through collaborative, innovative, and inclusive research. More information about CGD can be found online at https://(Use the "Apply for this Job" box below).  

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Job Description
** Final date to receive applications:
*** This position will be posted until 11:59 pm MDT on Monday, September 7, 2026.
** Required application materials:** *(preferably in PDF Format)
** Resume* Cover Letter - Please address how your skills and experience meet the needs of this position (for more information, please refer to the

Key Responsibilities and Knowledge, Skills, and Abilities sections of this job posting).
** Background Checks:
** Conducted for candidates selected for hire. Learn more.  
*
* Work Location:

** Regardless of flexible work arrangements, UCAR requires ALL positions to be performed within the U.S., excluding U.S. Territories.
** Visa Sponsorship and Relocation Assistance
** may be available to final candidate if eligible.#
** What You Will Do
** Here is a brief summary of what one would expect to be generally responsible for in this role.
** Software Engineering & Optimization:
*** Participates in the enhancement of the CESM modeling ecosystem, targeting performance improvements, memory reductions, hardware portability (GPUs) and other key project needs.
* Collaborates with team members & project stakeholders on proposed changes & processes for integration into the model.
** Code & Capability Analysis:
*** Review and analyze existing modeling software capabilities to assess its structure, quality, and maintainability.
* Document findings, proposed changes, and technical decisions to support knowledge sharing across a wide team of scientists and engineers.
** Exploratory Development:
*** Explore & evaluate benchmarks in newer languages and paradigms
* Stay current with emerging tools, languages & techniques relevant to software modernization.#
** Who We'd Love To Join Our Team
** Successful candidates will ensure their application materials speak to the following criteria:  
** Education and Experience (Required):
** Bachelor’s degree in computer-related field; or equivalent combination of education and relevant experience (e.g. Associate’s degree and four years’ experience).
** Knowledge, Skills, and Abilities
*
* Required:

* Proven ability to identify performance bottlenecks, inefficiencies, and other technical limitations through profiling, testing, and code analysis.
* Ability to recommend and implement modernization strategies, including refactoring legacy code, updating outdated libraries or frameworks, and applying current development standards and best practices.
* Demonstrated skill applying the software development process, including participation in software requirements analysis and design of software components.
*…