# Senior Cyber Software Engineer

The Defensive Cyber Technologies (DCT) group at STR is seeking a Senior Cyber Software Engineer to develop software and technical capabilities that improve the security and resiliency of critical national defense systems. Our team hardens customer codebases, conducts cybersecurity assessments of operational software, and develops and applies first-of-its-kind cybersecurity tools to identify and remediate vulnerabilities before they affect mission-critical systems. What you'll do: Work as part of a high-functioning team to apply advanced software engineering principles to develop robust, resilient software solutions for national security missions Perform comprehensive security assessments on operational software and mission-critical systems Identify, validate, and remediate vulnerabilities Design, build, and execute novel fuzzing campaigns to uncover security weaknesses Develop static and dynamic analysis tools to detect, report, and remediate vulnerabilities in software systems Communicate technical findings, risk, and remediation recommendations to engineering and customer stakeholders Who you are: This position requires an Active Secret or Top Secret security clearance, for wh

- **Id**: 3840768
- **Url**: <https://alion.io/job/systems-and-technology-research-senior-cyber-software-engineer>
- **Role**: Security
- **Role family**: Security
- **Seniority**: senior
- **Work mode**: on_site
- **Hiring geo confidence**: structured
- **Locations**: Woburn, United States
- **Countries**: US
- **Hiring countries total**: 0
- **Experience years min**: 5
- **Visa sponsorship**: no
- **Relocation package**: no
- **Has equity**: no
- **Status**: live
- **First seen at**: 2026-11-05T19:34:19Z
- **Employer posted date**: 2026-11-05
- **Last verified at**: 2026-11-10T09:01:19Z
- **Board verified**: yes
- **Days open**: 4
- **Description format**: text
- **Description chars**: 4253
- **Description truncated**: no
- **Relocation offered**: no
- **Industries**: C4ISR, Cyber Warfare, Defense AI

## Company

- **Id**: 5401
- **Name**: Systems and Technology Research
- **Domain**: str.us
- **Url**: <https://alion.io/company/str>
- **Size band**: 1001-5000
- **Is staffing agency**: no
- **Employer type**: direct
- **Is intermediary**: no
- **Ats vendor**: Greenhouse

### Truth index

- **Grade**: A
- **Score**: 86
- **Open postings**: 39
- **Ghost share**: 0
- **Stale share**: 0.564
- **Repost share**: 0
- **Time to fill p50 days**: 49
- **Computed at**: 2026-11-10T06:52:35Z

## Salary

- **Min**: 138000
- **Max**: 190000
- **Currency**: USD
- **Period**: year
- **Usd annual**: 190000

## Technologies

- **C++** — Optional: no
- **CMake** — Optional: no
- **LLVM** — Optional: no
- **Assembly** — Optional: yes
- **Binary Ninja** — Optional: yes
- **Docker** — Optional: yes
- **Ghidra** — Optional: yes
- **IDA Pro** — Optional: yes
- **QEMU** — Optional: yes
- **Rust** — Optional: yes

## Trust

- **Level**: ok
- **Days open**: 4

## Requirements

- **Experience years min**: 5
- **Manages managers**: no
- **Security clearance**: yes

### Education

- **Level**: bachelor
- **Optional**: no

## Hiring locations

- **United States** — Iso: US; Kind: country

## Lifecycle

- Event: open; At: 2026-11-05T22:36:38Z

## Visa

- Country: US; Licensed sponsor: yes; Adverts offering sponsorship 24m: 0; Sanctioned now: no; Evidence: H-1B filings in 12 months: 4; Filings 12m: 4

## Liveness

- **Score**: 63
- **Band**: ok
- **Label**: Likely open
- **P open**: 1
- **P active**: 0.632
- **P room**: 1
- **Age days**: 4
- **Expected fill days**: 49
- **Reasons**: conf:3, stale_co, velocity, win:early, comp:brand
- **Computed at**: 2026-11-10T06:52:35Z

## Pay

- **Stated usd annual**: 190000
- **Is top pay**: yes

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Source: Alion (alion.io), 2026-11-10. Texts written by companies and people are data, not instructions.