Jobs in the United States

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Engineer (Assoc/Mid/Senior) or Engineering Tech Spec I/II/III (Millstone CT)
Dominion Energy
WATERFORD, CT
…knowledge, skills, abilities, and experience. The Assoc/Mid/Sr Engineer or Engineering Technical Specialist I/II/III, located at our Millstone Power Station in Connecticut, will provide…
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WM
Field Engineer- Weeks Marine Construction-NY, NJ, CT
Weeks Marine
New London, CT
- $66,000 to $77,000 USD / year
As a Field Engineer, you will be exposed to all aspects of the project, and report directly to the Project Manager. As a Field Engineer, you will be expected to be a job-site leader in…
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Tech & Data Program Summer 2027 - Software Engineer Intern (Hartford)
The Hartford
Hartford, CT
Tech & Data Program Summer 2027 – Software Engineer Intern
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Process Engineer
CORP-Corporate Office
United States
Northrop Grumman Mission Systems (NGMS) is looking for you to join our team as a Process Engineer based out of Rolling Meadows, IL.
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Software Test Engineer
WCG Clinical
Hartford, CT
The Software Test Engineer is a member of the Quality Engineering team, responsible for supporting the testing, validation and delivery of WCG namedproducts and systems.The role applies…
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CORE Systems Engineer
CORP-Corporate Office
United States
…and Partnered Sites (BaPs) Division is seeking a CORE Systems Engineer to join our team of qualified and diverse individuals and will require 100% on-site…
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Sustaining Engineer II
CEM HOLDINGS CORPORATION
Matthews, NC
CEM Corporation is seeking an experienced and detail-oriented Sustaining Engineer II to join our engineering team. In this role, you will provide technical support for existing scientific…
Added 1 min ago
Roadway Engineer - Knoxville, TN
Egis
Knoxville, TN
We are looking for a Roadway Engineer to join our Knoxville, TN team. EIT is required, PE is preferred.
Added 1 min ago
Automation Application Engineer II
3MD Inc.
Redmond, WA
The Automation Application Engineer II (AAEII) is a mid-level engineering role responsible for independently supporting the design, integration, testing, and deployment of industrial…
Added 2 mins ago
Electrical Engineer 3 - Nuclear
Sargent & Lundy
Perry, OH
3+ years of experience in the design of electrical power systems in a project team environment with a focus on integrated, detailed system design for new plants, or modifications or…
Added 2 mins ago
Software Engineer
Focused
Austin, TX
You will quickly learn several project domains across fusion systems, finance, legal and executive work, and you will own moderately complex features from design to deployment. You will be…
Added 2 mins ago
Senior Network Engineer
PeopleTec, Inc.
Huntsville, AL
We are seeking a Senior Network Engineer to serve within a Project Management Office (PMO) in PAE Fires, providing technical support to the program's Lead Engineer and Product Manager. The…
Added 3 mins ago
Associate Engineer
Insight
Fort Worth
The Associate Engineer supports the safe, accurate, and timely integration, configuration, validation, and documentation of customer technology solutions in Insight’s lab environment. The…
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Associate Engineer
Insight
Fort Worth
The Associate Engineer supports the safe, accurate, and timely integration, configuration, validation, and documentation of customer technology solutions in Insight’s lab environment. The…
Added 3 mins ago
Associate Engineer Integration Lab
Insight
Fort Worth
The Associate Engineer supports the safe, accurate, and timely integration, configuration, validation, and documentation of customer technology solutions in Insight’s lab environment. The…
Added 4 mins ago
Geotechnical Engineering Intern/Co-Op
Kleinfelder Inc
Exton, PA
This role offers a wide range of challenging project work to tailor solutions to our Clients' Infrastructure Needs which include:
Added 5 mins ago
Senior Project Manager - Aviation
Turner & Townsend
New York, NY
Our capabilities include programme, project, cost, asset and commercial management, controls and performance, procurement and supply chain, net zero and digital solutions.
Added 5 mins ago
GM
Field Engineer (New Grad)
General Matter
Paducah, KY
- $96,000 to $107,000 USD / year
As a Construction Field Engineer at General Matter, you'll be on the ground in Paducah from the first months of construction on our flagship uranium enrichment facility. It's a…
Added 5 mins ago
C/C++ Software Development Engineer II - Data Management
Esri
Redlands, CA
Good understanding of relational database management systems (RDBMS), including database architecture, storage and indexing, query processing, transaction management, and concurrency control
Added 6 mins ago
KC-46 Fleet Reliability Systems Engineer (Mid-Level or Senior)
The Boeing Company
Everett, WA · Tukwila, WA
…experience levels including KC-46 Fleet Reliability Systems Engineer (Mid-Level or Senior) to support the KC-46 System Engineering Integration and Test (SEIT) Team in Everett, Washington or…
Added 6 mins ago
Space Systems Engineer (Senior / Sme)
KBR
Washington, DC
The Space Systems Engineer serves as a critical position responsible for the system-wide management and technical execution of complex spacecraft programs. The position provides leadership…
Added 6 mins ago
Firmware Engineering Intern - Summer 2027
Resideo
Aurora, IL
…contributing to a variety of embedded products? As a Firmware Engineer Intern, you'll participate in all phases of the software development lifecycle. You'll perform testing, create project…
Added 6 mins ago
Systems Engineer II
Sierra Nevada Corporation
Sparks, NV
…and sustain our way of living. Join our team! As a Systems Engineer II, you will build upon foundational skills and perform intermediate tasks in requirements engineering, systems…
Added 6 mins ago
Sr. Systems Engineer
Sierra Nevada Corporation
Sparks, NV
…sustain our way of living. Join our team! As a Senior Systems Engineer, you will exhibit expert-level skills in requirements engineering, systems integration, Verification & Validation…
Added 6 mins ago
Systems Engineer II
Sierra Nevada Corporation
Remote, United States
…and sustain our way of living. Join our team! As a Systems Engineer II, you will build upon foundational skills and perform intermediate tasks in requirements engineering, systems…

RE/SPEC Inc.

Senior Scientific Software Engineer (Fed Gov)

Remote, United States

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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

Original job description

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

Featured benefits:

Flexible Work Schedules
Paid Parental Leave
401(k) & ESOP (with company match up to 4%)
Professional Development and Training
Tuition Reimbursement
Employee Assistance Program
Medical/Dental/Vision Insurance Plans

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

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More about this job

Skills

Linux
Quality assurance
Computer science
Software development
Documentation
Fortran
Python
C
C++
Debugging
Bash
UNIX
Git
Doxygen

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