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Location
In office (Lisbon)
Seniority
Middle · 3+ years exp
Employment
Full-Time

Confirmed on the employer's own hiring board on Nov 11, 2026. First seen by Alion on Nov 6, 2026. Claranet Portugal scores B on the Alion truth index.

Overview
Company
Impact
Profile match
Claranet Portugal is the Portuguese business of the Claranet technology services group, headquartered in Lisbon and providing cloud and infrastructure, cybersecurity, data and AI, applications and workplace services to enterprise clients. It describes itself as the largest IT provider in Portugal, runs offices in Lisbon and Porto, and belongs to a group with offices in London, Paris, Milan and Frankfurt. It hires systems and network administrators, service desk and deskside technicians, site reliability and platform engineers, SIEM and SecOps engineers, pentesters, Kafka administrators, data engineers and ServiceNow consultants.

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.

If you share our vision, join us!

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

We offer:

  • Regular professional development;
  • Certification paths resources;
  • Regular teambuilding programs;
  • Friendly workplace.

Workplace: Lisbon - Hybrid

Claranet: Make Modern Happen!

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