Senior Software Engineer

Careerscape is recruiting on behalf of our client, a mission-driven defense technology organization, for a Senior Software Engineer to support technical users within a classified High Performance Computing (HPC) research and development environment in Colorado Springs, CO. This is a high-impact role for an experienced engineer who wants to work at the intersection of software engineering, systems administration, and mission-critical modeling and simulation, directly enabling researchers and analysts to get the most out of a demanding classified computing environment. Day to day, you will be the go-to technical resource for HPC users, helping them onboard, resolve access issues, troubleshoot workflows, and maintain the scripts and tools that keep their modeling and simulation work moving. You will spend your time split between hands-on user support, scripting and code maintenance, and coordination with O&M and security teams, so this role suits someone who is equally comfortable debugging a Fortran routine, writing clear documentation, and explaining a technical issue to a non-technical stakeholder. People who thrive here are patient troubleshooters, strong communicators, and genuinely enjoy helping other engineers and scientists succeed. COMPENSATION The salary range for this role is $180,000 - $200,000 per year, based on experience and qualifications. Additional compensation and benefits details will be shared during the hiring process. Responsibilities Provide direct technical support to classified HPC R&D users including onboarding and account setup Troubleshoot and resolve user access issues in coordination with security and O&M teams Support and maintain modeling and simulation workflows written in C, C++, and Fortran Write, debug, and maintain Bash and Korn shell scripts to automate user workflows Diagnose and resolve technical issues across compute, storage, and networking within the HPC environment Maintain accurate and current user-facing technical documentation Coordinate with the customer, operations and maintenance staff, and security personnel on user support matters Assist users with code maintenance, debugging, and configuration management practices Monitor system and user issues to identify recurring problems and recommend improvements Communicate technical issues and resolutions clearly to both technical and non-technical stakeholders REQUIREMENTS Active TS/SCI clearance with Counterintelligence (CI) Polygraph required 10+ years of technical experience in software engineering or HPC user support Demonstrated experience supporting modeling and simulation workloads Hands-on experience with C and C++ in a modeling and simulation context Basic to intermediate Linux command line experience required Familiarity with HPC environments, job scheduling, and compute cluster operations Working knowledge of Fortran, Bash, and Korn shell scripting Strong documentation, communication, and cross-team coordination skills Comprehensive medical, dental, and vision insurance 401(k) retirement plan with employer match Paid time off and paid holidays Life and disability insurance Tuition and professional certification reimbursement Relocation assistance available On-site access to secure, state-of-the-art HPC facilities Career growth opportunities within a mission-critical technical environment Health savings and flexible spending account options Employee assistance program ABOUT CAREERSCAPE Careerscape is a staffing and recruiting firm connecting talented professionals with employers across administration, operations, healthcare, finance, technology, customer support, and professional services. APPLICATION NOTICE Careerscape is supporting the hiring process for this client opening. By applying, you agree that Careerscape may review your application, contact you regarding this opportunity, and share your information with the hiring client for consideration. Careerscape may also contact you regarding future opportunities that align with your qualifications. EQUAL OPPORTUNITY STATEMENT Careerscape and its hiring partners are equal opportunity employers. Qualified applicants will receive consideration for employment without regard to race, color, religion, sex, gender identity, sexual orientation, national origin, disability, protected veteran status, or any other status protected by applicable law. FOR EMPLOYERS Careerscape is a staffing and recruiting firm connecting professionals with leading employers. We fill critical roles through Direct Hire, Contract Staffing, Temporary Staffing, and Executive Search — each backed by industry-specialized recruiters. For support for your business, visit cs-recruiters.com/hire-talent/. #J-18808-Ljbffr