Jobs in the United States

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Added 35 mins ago
Quality Assurance Manager (Mgr Quality 3) - 30981
Huntington Ingalls Industries
Pocasset, MA
…vehicles (UUVs), unmanned surface vehicles (USVs) and autonomy…
Added 35 mins ago
Lead, IPTL Software Engineer (Optical Space Systems) : Sign-on bonus ($30K max)
L3Harris
Wilmington, MA
Job Title: Lead, IPTL Software Engineer (Optical Space Systems) : Sign-on bonus ($30K max)
Added 35 mins ago
Sr Spec, Integration & Test Engineering
L3Harris
Wilmington, MA
The L3Harris AgileEO Metrology, Integration & Test department is seeking a Lead, Integration & Test Engineer to join our team and support one of our newer programs. AgileEO specializes in…
Added 35 mins ago
Associate, Integration & Test Engineering
L3Harris
Wilmington, MA
L3Harris Space Superiority group has an opening for an Associate, Integration & Test Engineer to join our team of qualified, diverse individuals. This position will be in Wilmington, MA.…
Added 36 mins ago
Software Engineer (Secret) (4611)
SMX
Boston, MA
SMX is seeking Software Engineers (Junior/Mid/Senior/SME) supporting the design and implementation of secure, scalable multi-cloud infrastructure, applications, and services in support of…
Added 36 mins ago
Cloud Systems Engineer (Secret) (4496)
SMX
Boston, MA
…solution of complex and advanced cloud requirements, hardware/software interfaces, and applications, and…
Added 36 mins ago
R&D Systems Engineer
J&J Family of Companies
Boston, MA
We are searching for System Engineer to be based out of Boston, Massachusetts, USA with in office expectations of a minimum of 3 days per week.
Added 1 hour ago
Space Lasers Engineer, Satellites (Starlink)
SpaceX
Redmond, WA
As a SpaceX optical engineer, you will be responsible for free-space optical system design, validation, and operation. You will shape the future of laser communication systems and directly…
Added 1 hour ago
Optical Engineer, Satellites (Starlink)
SpaceX
Redmond, WA
As a SpaceX optical engineer, you will be responsible for free-space optical system design, validation, and operation. You will shape the future of laser communication systems and directly…
Added 1 hour ago
Systems Engineer: Electrical - Level 1 or 2 (AHT)
Northrop Grumman
Chandler, AZ
Northrop Grumman Space Systems is seeking a Systems Engineer – Level 1 or Level 2 with a focus on Electrical Systems, located in Chandler, Arizona.
Added 1 hour ago
RF Data Link Engineer II
RTX Corporation
tucson, AZ
Perform hardware and software Communication Architecture trade studies.
Added 1 hour ago
Senior RF Data Link Engineer
RTX Corporation
tucson, AZ
Perform hardware and software Communication Architecture trade studies.
Added 1 hour ago
Principal RF Data Link Engineer
RTX Corporation
tucson, AZ
Perform hardware and software Communication Architecture trade studies.
Added 1 hour ago
Senior Software Safety / Senior System Safety Engineer
RTX Corporation
tucson, AZ
…analysis (task series 200), evaluation (task series 300), and verification (task series 400). This includes hardware and software safety related…
Added 1 hour ago
Software / System Safety Engineer II
RTX Corporation
tucson, AZ
This is an exciting opportunity for a highly motivated Software / System Safety Engineer II to join an innovative team in Tucson, AZ.
Added 1 hour ago
RF Electrical Engineer I - Onsite
RTX Corporation
tucson, AZ
…concept development and detailed design through integration, verification, and transition to production. This is an opportunity to solve challenging RF problems, work hands-on with advanced…
Added 1 hour ago
RF Electrical Engineer II - Onsite
RTX Corporation
tucson, AZ
…concept development and detailed design through integration, verification, and transition to production. This is an opportunity to solve challenging RF problems, work hands-on with advanced…
Added 1 hour ago
Principal Navigation Engineer
Mach Industries
Huntington Beach, CA
Develop and maintain navigation simulation models, sensor error models, and software-in-the-loop and hardware-in-the-loop verification workflows.
Added 2 hours ago
J
Technical Product Manager, Data and Internal Products
Jobgether
Remote, United States
- $180,000 to $230,000 USD / year
Previous experience in a technical role, such as Software Engineer, Data Scientist, Machine Learning Engineer, or highly technical Data Analyst.
Added 3 hours ago
VI
System Test Engineer
Viasat, Inc.
Carlsbad, CA · Germantown, MD · Reston, VA
- $149,500 to $224,500 USD / year
Shepherd test system deployment from hardware/software integration, to use in design verification and out to operations.
Added 3 hours ago
System Software Engineer, UEFI Firmware
NVIDIA USA
CA · CO
We are now hiring a System Software Engineer for the UEFI Firmware team! You will be heavily involved with the early modeling and simulation required to produce our world-class products,…
Added 3 hours ago
Senior Data Architect and Engineer
Gulf Coast Automation Group
Chicago · Chicago, IL
Job Title: Senior Data Architect and Engineer
Added 3 hours ago
Senior Data and AI Engineer
Gulf Coast Automation Group
Chicago · Chicago, IL
TalentFish is casting a line for a Senior Data and AI Engineer This is a direct hire role in Downtown Chicago with are premier client in the manufacturing industry – our client is a high…
Added 3 hours ago
GC
Senior Business Systems Engineer - SimCorp
Gulf Coast Automation Group
Madison · Madison, WI
- From $90,000 USD / year
Job Title: Senior Business Systems Engineer - SimCorp
Added 3 hours ago
Electrical Engineer (Thermal Chilled Water Systems)
Vertiv Corporation
Westerville, OH
Job Description Job Summary The Electrical Engineer will contribute to the release of new, best in class Chiller and CW Systems products; will work in a cross-functional development group;…

Closed listing

RE/SPEC Inc.

Senior Scientific Software Engineer

Remote, United States

This opening has closed.

The original listing is kept below for reference.

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Job details

Experience: Bachelor’s degree in a related discipline and at least 10 years of relevant experience.
Posting language: English
Posted: Nov 2, 2026

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Original job description

Archived listing. The details below describe a past opening.

Company Description 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.

Job Description

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.

Qualifications

Required Technical Experience

Master’s degree in computer science, engineering, or a related discipline, such as environmental science, mathematics, or physics, and at least 5 years of relevant experience in computational modeling, software development, and documentation; or
Bachelor’s degree in a related discipline and at least 10 years of relevant experience.

Recent project experience

At least one project within the 5 years preceding the response deadline involving both computational modeling and software development in a regulated, safety-critical, high-consequence, or equivalent mission-critical environment.
Ability to describe the project’s environment, tasks, responsibilities, and deliverables, and explain why the work was high-consequence or mission-critical.

Technical skills

Scientific programming with Fortran, Python, and C and/or C++.
GNU/Linux or equivalent development environments, including build, compilation, and debugging toolchains.
HPC systems and job schedulers such as Slurm or equivalent.
Bash or equivalent Unix/Linux shell scripting.
Software quality practices, testing, and scientific data formats and workflows.
Debugging, profiling, performance analysis, and legacy-code modernization.
Git or equivalent version control and reproducible builds.
Source-code documentation tools such as Doxygen or equivalent.
Python 2 and Python 3
C and C++
OpenMPI, MPICH, or Intel MPI
Serial and parallel scientific codes

Additional Information All your information will be kept confidential according to EEO guidelines.

All your information will be kept confidential according to EEO guidelines.

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