Application Security Engineer

Claranet Portugal; Lisboa; On-site; EUR 42,000 - 64,000; Full time

Job summary

Claranet Portugal is seeking an Application Security Engineer to join our Lisbon-based team. You will assess new applications and major changes, review architectures, and analyze data flows to identify vulnerabilities and mitigations.

You will drive Threat Modelling, Security by Design, and integration of AppSec tooling, while producing clear reports and supporting audits and go/no-go decisions. Strong communication and documentations skills are essential.

Qualifications

• 3–5 years of cybersecurity experience with proven application security experience (Web, Mobile, APIs, Cloud).
• Knowledge of ISO 27001 and OWASP Top 10.
• Hands-on experience with Threat Modelling (STRIDE, LINDDUN or equivalent).
• Strong documentation and communication skills.

Responsibilities

• Supporting application security assessments for new applications and major changes
• Analysing security requirements and reviewing architectures, data flows, interfaces and dependencies
• Identifying vulnerabilities and recommending mitigations
• Running Threat Modelling and embedding Security by Design across the project lifecycle
• Validating implemented controls and issuing security recommendations to support go/no-go decisions
• Producing clear technical reports and tracking findings until they are closed
• Supporting the integration of AppSec tooling (SAST, DAST, SCA, IAST)
• Reporting on risk and maturity indicators, and supporting audits

Skills

Application security

Threat modelling

Documentation

Communication

Education

Cybersecurity degree

Computer Science degree

Computer Engineering degree

Job description

We're fast learners, hard workers, natural collaborators... and we Make Modern Happen!

Our ambition is to unlock the potential of our digital world so that organisations everywhere can innovate and thrive securely.

We aim to achieve this goal by bringing together the world's most talented people and the most powerful technologies, combining them to address our customers' challenges and to build something stronger together.

Right now, we are looking for a Application Security Engineer to integrate our internal team, based in Lisbon.

Your responsibilities include:

• Supporting application security assessments for new applications and major changes
• Analysing security requirements and reviewing architectures, data flows, interfaces and dependencies
• Identifying vulnerabilities and recommending mitigations
• Running Threat Modelling and embedding Security by Design across the project lifecycle
• Validating implemented controls and issuing security recommendations to support go/no-go decisions
• Producing clear technical reports and tracking findings until they are closed
• Supporting the integration of AppSec tooling (SAST, DAST, SCA, IAST)
• Reporting on risk and maturity indicators, and supporting audits

You must have:

• A degree in Cybersecurity, Computer Science, Computer Engineering or a related field.
• 3 to 5 years of experience in cybersecurity, with proven experience in application security (Web, Mobile, APIs, Cloud)
• Knowledge of ISO 27001 and OWASP Top 10
• Hands-on experience with Threat Modelling (STRIDE, LINDDUN or equivalent)
• Strong documentation and communication skills

We value:

• Experience in large corporate or industrial environments
• Familiarity with Secure SDLC and corporate security governance
• Experience integrating security tools into delivery pipelines
• A pragmatic, collaborative approach to working with development teams