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Senior Software Engineer

Riverside Research · National Security · Research Institutes · Travel required · Bachelor's Degree · TS/SCI · Python · C · C++ · Fortran · 5 days ago

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Salary

≈ $129k – $240k per year (Estimated)

Location

In office (Fairfax)

Seniority

Senior · 8+ years exp

Confirmed on the employer's own hiring board on Nov 1, 2026. First seen by Alion on Oct 26, 2026.

Overview

Company

Impact

Profile match

Riverside Research

Riverside Research is an independent not-for-profit national security research organization headquartered in Arlington, Virginia, that performs research, prototyping and technical advisory work for US defense and intelligence agencies. Founded in 1967, it works across machine learning, trusted and secure systems, optics and photonics, electromagnetics, plasma physics, radar and radio frequency systems and biomedical engineering, with sites in Dayton and Beavercreek, Ohio, Lexington, Massachusetts, Fairfax, Virginia and Champaign, Illinois. It hires cyber security scientists, cryptography and formal methods researchers, remote sensing and RF engineers, software engineers and program managers.

riversideresearch.org · HQ: Arlington, United States · National Security · Research Institutes · 201-500 employees · Est. 1967

Tech stack of Riverside Research

Required Qualifications:

Must be eligible for TS/SCI security clearance and consent to CI Poly
Education and Experience:

Degree in Software Engineering or closely related field with software development experience, like Computer Science or Computational Science
Bachelor's with 8+ years of experience, or
Master's with 6+ years of experience
PhD with 3+ years of experience
Relevant years of experience may be substituted in lieu of a degree.

Strong understanding of software development methodologies (e.g., waterfall, agile), version control (Git), and continuous integration
Previous experience working in R&D environments or collaborating with researchers
Proven proficiency in multiple programming languages (e.g., Python, C, C++, Fortran)
Familiarity with software development activities such as:

Software development on and for Linux and Windows
Front end and GUI development
Python, Unix shell scripting and similar languages
HPC/supercomputing: MPI, OpenMP, threading, GPUs
Research and Development/prototyping scientific code

Excellent communication skills and proven ability to work cross-functionally
Ability to work independently and collaboratively with a team as projects require
Willingness to learn and perform other duties as assigned
Ability to travel (less than 10%)

Desired Qualifications:

Active Security Clearance, TS/SCI (with CI poly preferred)
Proven software engineering best practices experience (such as SWEBOK, CMMI)
Demonstrated professional proficiency with:

Working collaboratively within a team on software development
The full software development lifecycle (SDLC)
Parallel programming on high-performance computers (MPI and/or OpenMP or similar)
Developing cross-platform (Windows and Linux) software
The Atlassian tools (JIRA, bitbucket, Bamboo)

Experience developing software for scientific applications
Familiarity with linear algebra and numerical solutions techniques or numerical algorithms
Proven experience leading and directing the efforts of a team
Prior supervisory experience

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