HPC Software Engineer; TS​/SCI Poly

HPC Software Engineer

Job Type: Full-Time
Location: Onsite (U.S. Citizenship Required)
Clearance Requirement: Top Secret with favorable completion of a polygraph
Visa Status: U.S. Citizens only –
no visa sponsorship or transfer available

• 💯 100% Paid Healthcare

• 🌴 31 Days PTO (includes U.S. holidays)

• 💸 10% 401(k) contribution in every paycheck –
  100% Fully Vested Immediately

• 🎓 Tuition reimbursement

• 🏦 Student loan repayment

• 🚀 Unlimited upskilling and professional development support

Do you thrive on tackling hard technical challenges and working with cutting‑edge technology?

Our client is seeking a High Performance Computing (HPC) Software Engineer to join a team dedicated to solving the most complex mission‑critical challenges in support of U.S. Government operations. In this role, you’ll be immersed in a dynamic environment focused on innovation, performance optimization, and secure software engineering across advanced HPC systems.

As an HPC Software Engineer, you will:

• Collaborate with HPC SMEs, mission stakeholders, and developers to analyze computational needs

• Perform characterization and performance tuning of software solutions across various HPC node types

• Optimize code for parallel execution and scalability across clusters

• Use parallel computing frameworks (e.g., OpenMP, MPI) to enhance software performance

• Benchmark HPC systems and conduct deep performance analysis

• Document system architectures, implementations, and performance results

• Troubleshoot and debug complex issues affecting compute, memory, storage, and network performance

• Work with mission‑critical systems, including:

  • Real‑time applications

  • Massive‑scale data processing

  • Containerized environments

  • Data transport and application monitoring platforms

• Strong experience using the Linux CLI

• Scripting experience with Bash and Python for automation

• Solid knowledge of HPC architectures: compute, memory, network, and storage components

• Proficiency in software development using C, C++, Java, or Python

• Expertise with HPC parallel computing frameworks such as:

  • OpenSHMEM

  • pthreads

  • OpenMP

  • MPI

  • UPC

• Experience with:

  • Code optimization (parallelization, vectorization, tuning)

  • Performance benchmarking and profiling

  • Debugging and resolving HPC application issues

  • Documenting design and performance analysis

• Experience with
  Git for version control

• Familiarity with Atlassian tools (JIRA, Confluence)

• 7+ years of experience in HPC software engineering or a related technical role

• Bachelor’s degree in Computer Science, Engineering, or a related discipline

• 💼
  Annual Salary + Bonus

• Full benefits package included

• This is an onsite position – remote work is not available

• U.S. Citizenship required

• Top Secret clearance with favorable polygraph required

• No sponsorship or employment visa transfer available

If you’re passionate about high-performance systems, algorithm optimization, and making a national impact through software engineering, this is the opportunity for you.

We do not discriminate in employment on the basis of race, color, religion, sex (including pregnancy and gender identity), national origin, political affiliation, sexual orientation, marital status, disability, genetic information, age, membership in an employee organization, retaliation, parental status, military service, or other non‑merit factor.