Job Description
Job Title:Senior Qualys Engineer - Data
Location: London Paddington or Reading
Rate: Up to £540 a day
Start Date: Mid July
Job Type: Contract 26 weeks
We are seeking an experienced Senior Qualys Engineer to support the expansion and optimisation of an established enterprise Qualys platform within a large, complex organisation.
This is a highly technical, hands-on engineering role requiring an individual with deep expertise across the Qualys platform and proven experience delivering enterprise-scale vulnerability management solutions.
The successful candidate will take ownership of technical discovery, implementation and expansion activities, working closely with Network Engineering, Infrastructure, Application Support, Security, Business Analysis and Project Delivery teams. This is not a governance or reporting role-it requires a senior engineer who is comfortable designing, deploying, troubleshooting and optimising Qualys across large, distributed environments.
Alongside strong technical capability, the role requires excellent analytical skills, including the ability to work extensively with discovery data, network inventories, asset ownership information and vulnerability scan results using advanced Excel functions.
Key ResponsibilitiesQualys Platform
Design, deploy and expand the existing Qualys platform, including VMDR, CSAM, WAS and related modules.
Onboard new business units, environments and assets into the platform.
Configure, deploy and maintain physical scanners, virtual scanners and cloud agents.
Optimise scanning strategies for enterprise-scale performance and coverage.
Lead technical discovery activities to identify systems, assets and ownership.
Troubleshoot complex scanning, discovery and connectivity issues.
Vulnerability Management
Enhance enterprise vulnerability management processes.
Work with infrastructure and application teams to support remediation activities.
Analyse scan results and provide technical recommendations.
Produce operational and management reporting.
Infrastructure & Network Integration
Work closely with infrastructure and network engineering teams.
Ensure accurate asset discovery across complex, segmented networks.
Troubleshoot Firewall, routing, NAT and connectivity issues affecting scanning.
Expand scanning coverage across on-premises, cloud and hybrid environments.
Enterprise Integration
Integrate Qualys with enterprise ITSM, CMDB and asset inventory platforms.
Support workflow automation using APIs and Scripting technologies.
Assist with ongoing platform optimisation and operational improvements.
Data Analysis & Asset Discovery
A significant element of this role involves analysing and reconciling technical data from multiple sources.
Responsibilities include:
Working with discovery and inventory data.
Identifying asset ownership.
Reconciling scan results against infrastructure information.
Producing technical reporting and implementation tracking.
Candidates should be confident working with large Excel datasets, including:
XLOOKUP/VLOOKUP
Pivot Tables
Advanced filtering and sorting
Data reconciliation
Cross-sheet analysis
Reporting across multiple data sources
Governance & Documentation
Contribute to security standards and vulnerability management processes.
Produce technical documentation and operational runbooks.
Share knowledge and provide technical guidance where required.
Essential Skills & Experience
We are seeking a genuinely hands-on Senior Qualys Engineer with demonstrable experience delivering enterprise-scale Qualys implementations.
You will have:
Extensive hands-on experience with the Qualys platform.
Strong expertise with VMDR (essential).
Experience with additional Qualys modules such as CSAM and WAS.
Deep understanding of:
Asset discovery
Scanner deployment
Network integration
Enterprise onboarding
Vulnerability management life cycle
Remediation processes
Proven experience troubleshooting complex scanning and network issues.
Strong networking knowledge, including:
TCP/IP
DNS
Routing
Firewalls
VPNs
NAT
Network segmentation
Experience working across multiple technical teams in large enterprise environments.
Advanced Microsoft Excel skills for analysing and manipulating large technical datasets.
Desirable Experience
Experience working within large, complex enterprise environments.
Cloud platforms (AWS, Azure or GCP).
Cloud agent deployments.
API integration and automation.
Python or PowerShell Scripting.
Integration with ITSM and CMDB platforms.
Knowledge of recognised security and compliance frameworks.
Desirable Certifications
Qualys Certified Specialist
CISSP
CISM
Equivalent infrastructure or security certifications
Contract Deliverables
Expansion of Qualys coverage across the enterprise estate.
Successful onboarding of new environments and assets.
Improved vulnerability visibility and reporting.
Optimised scanning architecture and performance.
Enhanced integration with enterprise systems.
Accurate asset discovery and ownership identification.
Comprehensive technical documentation.
About You
You are an experienced, technically capable Qualys Engineer who enjoys solving complex infrastructure and security challenges.
You will be comfortable taking ownership of technical discovery, deployment and optimisation activities while working collaboratively with multiple technical teams. You combine deep Qualys expertise with strong networking knowledge and excellent analytical skills to deliver scalable, enterprise-grade vulnerability management solutions.
Disclaimer
Notwithstanding any guidelines given to level of experience sought, we will consider candidates from outside this range if they can demonstrate the necessary competencies.
Square One is acting as both an employment agency and an employment business, and is an equal opportunities recruitment business. Square One embraces diversity and will treat everyone equally. Please see our website for our full diversity statement.
