HPC Software Engineer

Cornerstone Defense LLC; Colorado Springs (CO); On-site; USD 140,000 - 230,000; Full time

Job summary

Cornerstone Defense LLC is seeking a mid-career HPC Software Engineer to join an on-site program in Colorado Springs. You will work with the TUS team to port, optimize, and parallelize codes, mentor junior staff, and design training workshops to help end-users adopt HPC best practices.

The role requires an active TS/SCI with Polygraph and involves collaborating with the Chief Scientist, program lead, customers, and site staff to deliver tailored HPC solutions for workflow, modeling, and data

Qualifications

• Bachelor's degree in STEM and 10+ years professional experience.
• 5+ years in modeling and simulation in heterogeneous, multi-platform environments.
• Experience with HPC users workflow and GUIs.
• Proficiency with Fortran, C, and/or C++.
• Linux OS proficiency and ability to work independently in a lab.
• Experience with coding standards, unit testing, and configuration management.
• Experience delivering HPC training and onboarding material.

Responsibilities

• Mentor junior TUS and HPC team members; provide code reviews.
• Design and deliver training workshops, tutorials, and documentation.
• Port, optimize, and parallelize codes to user requirements.
• Collaborate with Chief Scientist, team lead, customers, and site staff on-site.
• Support on-site workflow modeling and data requirements to meet customer needs.

Skills

HPC expertise

Modeling & simulation

C/C++/Fortran programming

Linux/Unix proficiency

Code analysis & debugging

Training/workshop delivery

Git

Education

Bachelor's degree in STEM

Tools

Git

CMake

Makefile

autoconf

Job description

HPC Software Engineer
Colorado Springs, CO
Active TS/SCI with Polygraph
Range: $140,000 - $230,000

We are seeking a mid-career level HPC Software Engineer that will work in a High Performance Computing (HPC) Research and Development (R&D) customer contract. The candidate will be an active member of the Technical User Support (TUS) team, interacting with the team, TUS team lead, program Chief Scientist, Customers, users, and site staff while on-site with a specific R&D customer.

The TUS team is responsible for working with HPC users to achieve faster “time to science”. You will work closely with the users to port, optimize, and parallelize codes to the users’ requirements.

You will mentor junior members of the TUS and broader HPC teams, providing technical guidance, code‑review sessions, and career‑development advice. You will also design and deliver training workshops, tutorials, and documentation to help end‑users and internal staff adopt HPC tools, best‑practice coding standards, and performance‑tuning techniques.

This position will be on‑site with a specific customer focused on their workflow, modeling and simulation, and data requirements and working with the program Chief Scientist, TUS team lead, and others to design and implement solutions to meet the customer’s requirements.

Basic Qualifications:

• Bachelor's degree in STEM related discipline and a minimum of 10 years of professional level experience
• Around 5 years of experience developing and using modeling and simulation software in heterogeneous, multi-platform environments
• Working with HPC users workflow for mod/sim problems and GUIs
• Knowledge of High Performance Computing (HPC) environment and related technologies
• Demonstrated proficiency with Fortran, C, and/or C++
• Demonstrated proficiency with BASH and Korn
• Linux Operating System proficiency, ability to solve end‑user computer system problems while working independently in a lab environment.
• Proficiency in basic software practices such as coding standards, unit testing, and configuration management
• Strong ability to analyze, debug, and maintain the integrity of an existing code base
• Experience designing and delivering training workshops, tutorials, or onboarding material for HPC users and internal staff

Desired Skills:

• Experience mentoring junior engineers or scientists, providing technical guidance, and conducting code review sessions
• Revision control software (CVS, SVN, Git)
• Build/install tools (e.g. CMake, Makefile, autoconf)
• Experience with Python and Perl
• GPU programming experience (e.g., CUDA, OpenCL)
• Agile process and JIRA
• AI/ML/Neural Networks experience
• Good organization skills to balance and prioritize work
• Superior programming skills and excellent attention to detail
• Strong communication skills a results-oriented team player, creative thinker, and problem-solver