QU
QualysSenior Software Engineer
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Before you apply
LocationPune
Typefull-time
SenioritySenior
Experience4+ yrs
DepartmentEngineering
Company size1,001–5,000 people
PostedJul 21, 2026 · 3mo ago
Verified live12h ago
At a glanceSummarised by Seekless from the posting.
Bachelor's or Master's degree in Computer Science, Electronics, Instrumentation, or equivalent
4+ years of software development experience with strong system-level programming background
Strong expertise in C++
Strong experience in Windows development and Windows Internals
Strong understanding of operating system concepts including processes, threads, synchronization, memory management, IPC mechanisms
Professional experience in designing, prototyping, developing, testing, debugging, and performance profiling
Strong debugging and problem-solving skills
Experience developing software closer to operating system or endpoint layers
Hands-on experience with development tools: GIT, JIRA, Jenkins, CI/CD tools
Strong analytical and communication skills
Passion to build a career in Runtime Security and low-level system software
Experience with endpoint security products and technologies: Runtime Security, EPP, Anti-malware, Runtime protection technologies
Exposure to Linux internals and kernel concepts
Exposure to macOS development and system internals
Understanding of networking concepts and protocols including TCP/IP, DNS, DHCP, HTTP/HTTPS
Understanding of security concepts such as behavioral detections, threat hunting, MITRE ATT&CK framework, threat intelligence
Exposure to Kubernetes, containers, and distributed systems
Experience with virtualization platforms such as VMware
Knowledge of scripting languages such as Python, Shell scripting, or PowerShell
Working knowledge of databases such as PostgreSQL or Oracle
Excellent analytical, debugging, and problem-solving skills
Working knowledge of Java and Golang with the ability to understand, debug, and contribute to codebases written in these languages
Exposure to developing backend services or distributed systems using Java and/or Golang is an added advantage
Skills
C++
GIT
JIRA
Jenkins
CI/CD
Linux
macOS
TCP/IP
DNS
DHCP
HTTP/HTTPS
Kubernetes
containers
VMware
Python
Shell
PowerShell
PostgreSQL
Oracle
Java
Golang
About the company
Come work at a place where innovation and teamwork come together to support the most exciting missions in the world!
About the role
Description:
We invite you to be part of a highly motivated Qualys engineering team responsible for building next-generation Runtime Security and Endpoint Protection Platform (EPP) solutions. We are seeking a talented and passionate Senior Software Engineer with strong expertise in C++ and system-level programming to work on exciting projects enabling Qualys security solutions.
Working with a team of engineers and architects, you will be responsible for designing, developing, and supporting highly scalable endpoint security offerings. In this position, you will work on cutting-edge security technologies including Runtime Security, EPP/Anti-malware, runtime protection, telemetry collection, threat detection, and endpoint monitoring capabilities across multiple operating system platforms.
This position offers an opportunity to solve challenging system-level problems and contribute to one of the fastest-growing R&D teams at Qualys.
Responsibilities
Responsibilities:
• Takes complete ownership for successful delivery of products, components, modules, and features assigned.
• Demonstrates high-quality focus and applies engineering best practices including test-driven development and code quality standards.
• Develop understanding of the complete product functionality spanning endpoint agents to backend services including:
•
End-to-end Runtime Security/EPP architecture
•
Customer use cases & Product workflows
•
Overall Qualys security platform integration and value proposition
• Lead engineering lifecycle activities including:
•
Design
•
Development
•
Code reviews
•
Test case reviews
•
Release support
• Develop in-depth understanding of endpoint security technologies including:
•
Runtime Security
•
EPP / Anti-malware
•
Runtime threat detection and prevention mechanisms
• Understand operating system internals and security concepts including:
•
Processes
•
Threads
•
Memory management
•
File systems
•
System calls
•
Driver interactions
•
Endpoint telemetry collection
• Own new feature development including design, implementation, performance optimization, and release delivery.
• Debug issues reported by QA teams or customers in production and provide effective solutions.
• Collaborate with QA teams to define feature validation strategy including:
•
Functional testing
•
Performance testing
•
Scalability testing
•
Negative scenarios
• Document design details and test plans as part of development activities.
• Communicate and collaborate effectively with engineering teams, QA teams, architects, Product Managers, and stakeholders.
Qualifications:
Must Have:
• Bachelor’s or Master’s degree in Computer Science, Electronics, Instrumentation, or equivalent.
• 4+ years of software development experience with strong system-level programming background.
• Strong expertise in C++ .
• Strong experience in Windows development and Windows Internals.
• Strong understanding of operating system concepts including:
•
Processes
•
Threads
•
Synchronization
•
Memory management
•
IPC mechanisms
• Professional experience in designing, prototyping, developing, testing, debugging, and performance profiling.
• Strong debugging and problem-solving skills.
• Experience developing software closer to operating system or endpoint layers.
• Hands-on experience with development tools:
•
GIT
•
JIRA
•
Jenkins
•
CI/CD tools
• Strong analytical and communication skills.
• Passion to build a career in Runtime Security and low-level system software.
Nice to have
Additional skills that are good to have:
• Experience with endpoint security products and technologies:
•
Runtime Security
•
EPP
•
Anti-malware
•
Runtime protection technologies
• Exposure to Linux internals and kernel concepts.
• Exposure to macOS development and system internals.
• Understanding of networking concepts and protocols including:
•
TCP/IP
•
DNS
•
DHCP
•
HTTP/HTTPS
• Understanding of security concepts such as:
•
Behavioral detections
•
Threat hunting
•
MITRE ATT&CK framework
•
Threat intelligence
• Exposure to Kubernetes, containers, and distributed systems.
• Experience with virtualization platforms such as VMware.
• Knowledge of scripting languages such as Python, Shell scripting, or PowerShell.
• Working knowledge of databases such as PostgreSQL or Oracle.
• Excellent analytical, debugging, and problem-solving skills.
Good to Have:
•
Working knowledge of Java and Golang with the ability to understand, debug, and contribute to codebases written in these languages.
•
Exposure to developing backend services or distributed systems using Java and/or Golang is an added advantage.