Operating system internals (Windows, Linux) jobs

Cybersecurity Incident Investigator

Kyndryl · Posted Nov 11, 2026

Open

Remote, Canada
Remote
Full-time · Senior
CA$119K–CA$169K per year

Cybersecurity Incident Investigator

Kyndryl · Posted Nov 11, 2026

Open

Remote, Canada
Remote
Full-time · Senior
CA$119K–CA$169K per year

Full Spectrum Cyber Capability and Operations Expert

MIT Lincoln Laboratory · Posted Nov 10, 2026

Open

Lexington, Massachusetts, United States
Full-time
$140K–$187K per year
4+ years

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Lead and develop advanced cyber capabilities for unconventional devices and networks within the Cyber Physical Systems group.

Compensation

Technical Staff 5 Hiring Range: $140,000 - $187,000 Technical Staff 6 Hiring Range: $155,000 - $207,000

Responsibilities

Develop and implement novel cyber capabilities on unconventional devices and networks.
Test and evaluate cyber capabilities and concepts of employment for operational suitability and survivability.
Work with DoD processes including acquisition, planning, and operations.
Explain highly technical concepts to senior audiences.
Self-direct efforts and lead and mentor multidisciplinary teams to achieve project goals.

Requirements

PhD in Computer Science, Electrical Engineering, Cyber Security or related field
Master’s degree in one of these fields with at least four years of relevant technical experience

Skills

Python C assembly computing architecture design instruction set architectures

Sr. Staff Firmware / BIOS Developer

ZT Systems · Posted Nov 9, 2026

Open

Georgetown, Texas, United States
On-site
Full-time · Senior
$117K–$165K per year
8+ years

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Design, develop, code, and debug BIOS/Firmware for ZT Cloud Servers, ensuring reliability and compatibility with server hardware architecture.

Compensation

The typical base salary for this position is expected to be between $ 116,500 and $165,000 annually.

Responsibilities

Design, develop, code, and debug BIOS/Firmware
Review and provide feedback on firmware and software architecture specifications
Establish design documents with engineering team
Plan and develop reliability and compatibility of motherboard and BIOS system specifications
Execute reference code and collateral

Requirements

BS in Electrical Engineering, Computer Science or Computer Engineering
MS degree with 6+ years of experience

Skills

C C++x86 Assembly Operating System internals Processor architecture User interface development

Cyber Systems Exploitation Researcher

MIT Lincoln Laboratory · Posted Nov 9, 2026

Open

Lexington, Massachusetts, United States
On-site
Full-time · Entry
$92K–$115K per year
0+ years

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Support research and development of cyber security tools and techniques for U.S. government operations.

Compensation

Assistant Staff Hiring Range: $92,000 - $115,000

Responsibilities

Support design, development, data analysis, programming, testing, troubleshooting, and documentation of system prototypes
Apply basic technical practices, tools, and procedures to complete defined tasks
Assist team members with data collection and documentation
Learn mission context, technical standards, and processes
Collaborate with team members and communicate progress

Requirements

Bachelor’s degree in a STEM discipline or other relevant technical field

Skills

reverse engineering software and hardware reverse engineering vulnerability research cyber security tools static analysis dynamic instrumentation

Cyber Systems Exploitation Researcher

MIT Lincoln Laboratory · Posted Nov 9, 2026

Open

Lexington, Massachusetts, United States
Associate
$114K–$148K per year
2+ years

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Lead research and development of cyber security tools and techniques, reverse engineering and exploiting software and hardware systems for U.S. government operations.

Compensation

Associate Staff Hiring Range: $114,000 - $148,000

Responsibilities

Owns and executes discrete design and development tasks such as data analyses, programming, designs, tests, models, simulations, or integration tasks within broader project or program efforts.
Applies relevant technical knowledge to solve less-defined and moderately complex problems, independently identifying appropriate methods and adapts existing approaches as needed.
May contribute to system, subsystem, or component-level development activities that may span multiple disciplines, mission needs, products, or technical focus areas.
Develops, reviews, and contributes to technical documentation, program reporting, data analyses, design materials, and presentations based on ambiguous policies and procedures.
Collaborates with project team members to ensure milestones, assumptions, dependencies, and technical risks are understood and addressed.

Requirements

Bachelor’s degree in a STEM discipline or other relevant technical field
Master’s degree in a STEM discipline
Nice to have: Version control systems (Git)
Nice to have: Disassemblers/decompilers (Ghidra, IDA Pro)
Nice to have: Debuggers (WinDbg, GDB)

Senior Principal Engineer Software

Palo Alto Networks · Posted Jun 26, 2026

Open

California, United States
Full-time · Principal
$184K–$297K per year
4+ years
Visa sponsorship

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Lead engineering efforts in the WildFire Team, designing, building, and operating secure cloud infrastructure and automation frameworks for Palo Alto Networks’ cybersecurity products.

Compensation

$183,600.00 - $297,000.00/yr

Responsibilities

Design, build and operate reliable, secure Cloud infrastructure
Ensure that applications are production-ready, scalable, and reliable
Develop tools and automation frameworks
Automate robust deployment of services
Orchestrate end-to-end monitoring and alerting

Requirements

BS/MS in computer science/engineering, or equivalent experience

Skills

C C++Python Linux Windows device drivers PCI devices hypervisor development

Principal Software Engineer - ADEM Agent (Client/Endpoint Focus)

Palo Alto Networks · Posted Mar 31, 2026

Open

Santa Clara, United States
Full-time · Principal
$147K–$238K per year
8+ years
Visa sponsorship

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Lead the technical vision and architecture for the ADEM Agent, ensuring performance, security, and stability across multiple operating systems.

Compensation

$147,000.00 - $237,500.00/yr

Responsibilities

Define long‑term architectural vision for the ADEM Agent across Linux, Windows, macOS, and mobile platforms
Lead the Design Review Board for all Agent‑side features
Drive the evolution of the Agent's telemetry collection and processing pipeline
Partner with Product Management, Core Infrastructure, and Security teams to translate ambiguous business requirements into robust technical specifications
Mentor Staff and Senior engineers

Requirements

BS/MS/PhD in Computer Science or a related technical field
Nice to have: Claude Code
Nice to have: Cursor
Nice to have: Windsurf
Nice to have: GitHub Copilot

Skills

Rust Go C/C++Operating System internals Networking stacks L3-L7

Cybersecurity Threat Hunter

University of Maryland Global Campus · Posted Jun 17, 2026

Open

Adelphi, Maryland, United States
Hybrid
Full-time
$120K–$135K per year
6–8 years

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Lead proactive threat hunting activities across endpoints, network, and cloud environments to detect anomalous behaviors and emerging threats.

Compensation

Hiring Range: $120,000.00 - $135,000.00

Responsibilities

Lead proactive threat hunting activities across endpoints, network, and cloud environments to detect anomalous behaviors and emerging threats.
Analyze large security logs to identify patterns of malicious activity and Indicators of Compromise (IOCs) using our SIEM and EDR platforms, augmenting analysis with threat intelligence feeds.
Develop and refine hypotheses for hunting campaigns based on current threat landscape and adversary TTPs (e.g., MITRE ATT&CK).
Collaborate with the bigger Information Security team and other cross-functional teams to triage, elevate, and respond to identified threats.
Design and implement custom detection logic and rules to improve threat detection efficacy within SIEM tool.

Requirements

Bachelor’s degree in Cybersecurity, Computer Science, Information Systems, or a related field (or equivalent experience).
Nice to have: GIAC Cyber Threat Intelligence (GCTI)
Nice to have: GIAC Certified Incident Handler (GCIH)
Nice to have: GIAC Advanced Threat Hunting (GATH)
Nice to have: Certified Threat Intelligence Analyst (CTIA)

Skills

Offensive Software Engineer

Ministerie van Defensie · Posted Oct 25, 2026

Open

Den Haag, Netherlands
On-site
Contract
€58K–€80K per year

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Build offensive software tools and malware for the Dutch Defence Cyber Commando.

Compensation

Maandsalaris €4.867,00 - €6.679,00

Responsibilities

Develop malware and offensive tools
Implement new malware techniques
Create developer tooling and workflow improvements
Research and develop malware products
Test and verify software products

Requirements

HBO/WO work and thinking level

Skills

C C++Python Rust Assembly Systems programming Malware development Network protocols Cryptography Operating system internals

Senior Intelligence Analyst, GTIG Intel Delivery (Bulgarian)

Google · Posted Nov 6, 2026

Open

Remote, Bulgaria +1 more
Remote
Senior
€56K–€57K per year
5+ years

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As a Security Consultant, you will be responsible for helping clients effectively prepare for, proactively mitigate, and detect and respond to cyber security threats.

Locations (2)

Sofia, Sofia-Capital, Bulgaria
Bulgaria

Compensation

Bulgaria: €56000 - €57000 (EUR) + 15% bonus target + equity + benefits

Responsibilities

Embed within, and build understanding of the customers' cyber threat intelligence (CTI) requirements to identify opportunities for deployment of CTI within their operations for maximum defensive impact.
Track, research, and contribute CTI analysis within Google Threat Intelligence of customer's priority threat concerns.
Support the integration of CTI into customer's security processes and technologies, including SIEM and TIP systems.
Perform threat hunting, generate CTI, and analyze customer data from bespoke sources to identify threat activity and build automated analytical workflows.
Enable customer SOC analysts and Hunt teams to deploy and leverage Google's CTI.

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