Senior Scientific Software Engineer (Fed Gov) 3850

About this role

Big challenges need bold thinkers.

If you’re someone who sees problems as opportunities, you’ll thrive here. RESPEC is 100% employee-owned, which means we take ownership of every challenge. Here, your ideas drive real solutions. Since 1969, we’ve tackled complex challenges in energy transition, infrastructure resilience, digital transformation, and sustainability.

At RESPEC, you’ll work alongside clients to take on critical problems. Depending on your expertise, you might design infrastructure in remote locations, develop renewable energy solutions for global projects, or apply data-driven technology to improve mining and water systems.

We bring deep technical knowledge, real-world experience, and a commitment to work that matters. If you're looking for a place where your contributions have real impact, you’ll fit right in.

We do not accept unsolicited resumes from third-party recruiters.

RESPEC is seeking a Senior Scientific Software Engineer to support scientific computing work for a large  National Laboratory. You’ll help sustain and modernize computational modeling software used in a high-consequence environment, with a focus on reliable, maintainable code and performance on Linux and HPC systems.

Core Responsibilities

• Sustain, analyze, and modernize scientific software, including legacy systems.
• Refactor code to improve portability, efficiency, maintainability, and stability.
• Support computational modeling across conceptual, process, and numerical models.
• Debug, profile, benchmark, and assess software performance and scalability.
• Support Linux development, HPC workflows, and job-scheduler use.
• Apply software quality practices, testing, and verification and validation.
• Document source code, technical debt, risks, and software workflows.
• Support reproducible builds, scientific data workflows, and migration readiness.
• Perform work in accordance with applicable Nuclear Quality Assurance (NQA-1) requirements.

**Required ...