Operating system internals (Windows and Linux) jobs

Build infrastructure capable of managing metadata for hundreds of billions of files and facilitating millions of concurrent connections.
Expand Dropbox’s data‑fabric, linking hundreds of millions of applications, devices, and services worldwide.
Measure and optimize Dropbox’s analytics platform for advanced data insights.
Collaborate with cross‑functional teams to improve performance, reliability, and security of Dropbox’s infrastructure.
Participate in on‑call work to address bugs, outages, and operational issues.

Requirements

BS, MS, or PhD in Computer Science or related technical field involving coding (e.g., physics or mathematics), or equivalent technical experience
Nice to have: Semaphores
Nice to have: Mutexes

Skills

Python Go C/C++Java 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.

Engineering Manager, Quantum Security

Everpure · Posted Nov 6, 2026

Open

Prague, Prague, Czech Republic
On-site
Full-time · Manager

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As Manager, Quantum Security, you will build, scale, and lead a high-performing engineering team dedicated to preparing Everpure’s™ FlashArray and FlashBlade storage products for the post-quantum era.

Responsibilities

Build and Scale High-Performing Talent: Hire, mentor, and directly lead a dedicated engineering team of software and MTS engineers.
Drive Cryptographic Discovery & Inventory: Lead the end-to-end audit and validation of non-quantum-safe algorithms, libraries, and implementation patterns across FlashArray and FlashBlade operating system and backend layers.
Architect a Risk-Based Remediation Roadmap: Translate technical discoveries into prioritized remediation and upgrade roadmaps.
Orchestrate Cross-Functional Execution: Lead technical discussions, evaluate architectural trade-offs, and maintain seamless collaboration channels across EMEA, U.S. and APJ engineering groups.
Provide Executive Strategy & Visibility: Synthesize complex security readiness metrics, resource requirements, and risk profiles into concise status updates and strategic recommendations.

Requirements

Nice to have: Cryptography
Nice to have: Product Security

Skills

Engineering Leadership People Management

Senior Staff Security Researcher

Palo Alto Networks · Posted Nov 5, 2026

Open

Petach Tikva, Israel
On-site
Senior
5+ years

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Lead original, impactful security research projects in identity security, influencing product design and conducting offensive research

Responsibilities

Lead research projects
Influence product design
Conduct offensive research
Present research at conferences
Write blog posts

Requirements

Nice to have: published CVEs
Nice to have: blog posts
Nice to have: research presentations
Nice to have: product feature design

Skills

offensive security research defensive security research application security cloud security DevOps technologies identity security network protocols web applications operating system internals

Working Student Cybersecurity & AI Automation 50-60%

Working Student Cybersecurity & AI Automation 50-60%

Locations (2)

Responsibilities

Requirements

Skills

Benefits

Offensive Software Engineer

Compensation

Responsibilities

Requirements

Skills

Infrastructure Software Engineer

Responsibilities

Requirements

Skills

Senior Intelligence Analyst, GTIG Intel Delivery (Bulgarian)

Locations (2)

Compensation

Responsibilities

Engineering Manager, Quantum Security

Responsibilities

Requirements

Skills

Senior Staff Security Researcher

Responsibilities

Requirements

Skills

Benefits

Requirements

Skills

Benefits

Benefits