Senior Security Engineer

What we’re all about.

We find, when we come together in the pursuit of excellence, great things happen. And that’s how we do things at Quantexa – together. Our business is data, but our culture is collective. We’re about growth – but not just the bottom line. We create a culture where people feel empowered to do their best work. We might work across continents and time zones, but that doesn’t stop us from collaborating. We’re connected. We celebrate our successes together, and we unite to tackle the challenges. 41% of our colleagues come from an ethnic or religious minority background. We speak over 20 languages across our 47 nationalities, creating a sense of belonging for all.

At Q, we’re looking for people who share that vision. People like you.

You will be expected to.

As a Senior Security Engineer at Quantexa, you will play a pivotal role in shaping and securing our cloud-native environments across Azure and GCP. Leveraging your deep expertise in cybersecurity best practices, threat actor tactics, and modern detection techniques, you will help design, implement, and maintain secure systems that support our internal and client-facing environments. 

You will join the Security Operations team, reporting to the Cyber Security Manager, and be expected to contribute immediately by working with the team and advising the Cyber Security Manager to securely onboard, develop, deploy and manage new technologies within Quantexa from a security aspect. 

You will also be responsible for reviewing existing deployments, identifying areas for enhancement, and contributing to our continuous improvement workflows to ensure our security posture evolves with emerging threats. 

Your role will include interpreting open-source threat intelligence reports and translating them into actionable detection rules aligned with the MITRE ATT&CK framework. You’ll also conduct proactive threat hunting to identify and test indicators of compromise before they escalate. 

Collaboration is key. You will work closely with the Information Security team on initiatives such as penetration testing, red teaming, SOC operations, and compliance-based audits (ISO, SOC2 and Cyber Essentials). You’ll also partner with IT, DevOps and other stakeholders to embed security into every layer of our infrastructure. 

Strong communication skills are essential. You will be expected to clearly articulate complex technical concepts to non-technical audiences, influence stakeholders across the business, and advocate for adopting security best practices in conjunction with the Cyber Security Manager. Your ability to build trust and drive alignment will be critical in embedding security into our operations and culture. 

Requirements

What you’ll be doing.

As a Senior Security Engineer at Quantexa, you’ll play a critical role in securing our global and cloud-native platforms. Your work will span strategic planning, hands-on technical execution, and cross-functional collaboration. You will: 

• Design and consult on the implementation of secure cloud-native architectures across our cloud environments. 

• In conjunction with the Security Operations team, you will build upon existing threat detection and response efforts, including developing and tuning detection rules aligned with MITRE ATT&CK and conducting proactive threat hunting. 

• Collaborate with DevOps and Engineering teams to provide oversight and embed security into CI/CD pipelines and infrastructure as code. 

• Support audit readiness and compliance by contributing to SOC 2, ISO 27001/27017, and NIST 800-53 control implementation and evidence gathering. 

• Participate in red teaming and penetration testing activities to identify and mitigate vulnerabilities. 

• Drive security automation and orchestration initiatives to improve operational efficiency and scalability within the Security Operations function. 

• Work with the security engineer to continuously assess and enhance security tooling and configurations through a security-by-default lens. 

• Engage with vendors to stay informed on product updates and evolving security capabilities. 

• Influence and educate stakeholders across the business to adopt secure-by-design principles and foster a security-first culture. 

• In collaboration with the Cyber Security Manager, contribute to advanced security initiatives, including but not limited to insider risk, data loss prevention (DLP), and incident response efforts. 

What you’ll bring. 

Educational Background:

• Bachelor’s degree in a relevant field (e.g., Information Security, Computer Science, or a related discipline)