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Mercor is seeking a passionate AI red team specialist to stress-test conversational agents. You will simulate jailbreaks, prompt injections, and bias exploitation to surface vulnerabilities and improve safety across integrations. You will produce reproducible artifacts, annotate failures, and follow taxonomies and playbooks to keep testing consistent....

Mercor is seeking a passionate AI red team specialist to stress-test conversational agents. You will simulate jailbreaks, prompt injections, and bias exploitation to surface vulnerabilities and improve safety across integrations. You will produce reproducible artifacts, annotate failures, and follow taxonomies and playbooks to keep testing consistent....

At Lùkla, we are looking for a Linux Systems Administrator to join an experienced infrastructure team. Whether you have 2–3 years of dedicated experience or are a more senior administrator, we are looking for someone who values solid systems administration and operational reliability. Responsibilities: Administer, maintain, and troubleshoot Linux servers...

Lùkla Portugal is seeking a Linux Systems Administrator to join our experienced infrastructure team. We welcome candidates with 2–3 years of dedicated Linux administration experience and those who are more senior, valuing reliability and solid systems management. Responsibilities include maintaining production Linux servers, troubleshooting incidents,...

Siemens Cybersecurity Assurance invites an experienced Red Teamer/Pentester to perform cybersecurity assessments across IT, OT, products and software development centers. You will apply hacking principles and red team techniques to mimic real-world threats and drive action with executive stakeholders. Role requires strong scripting, Python, Bash, Power...

## Pentester Apply: Lisbon: Full time: Posted Today: JR*******Acerca da Logicalis**A Logicalis é um Global IT Solutions & Digital Services Provider que acelera a transformação digital dos seus clientes em todo o mundo, através de uma rede internacional dotada de centros de especialização, equipas líderes do sector e parcerias estratégicas (que...

## Pentester Apply: Lisbon: Full time: Posted Today: JR*******Acerca da Logicalis**A Logicalis é um Global IT Solutions & Digital Services Provider que acelera a transformação digital dos seus clientes em todo o mundo, através de uma rede internacional dotada de centros de especialização, equipas líderes do sector e parcerias estratégicas (que...

Coordenar equipa de Red Team com foco em cibersegurança, exigindo 5 anos de experiência e certificações relevantes.

Aurion está a recrutar um Offensive Cybersecurity Specialist - Red Team para integrar a equipa de segurança ofensiva de um dos maiores operadores de telecomunicações em Portugal. Conduza pentests autónomos, participe em operações de Red Team e identifique vulnerabilidades, comunicando os resultados a clientes. Requisitos: mínimo de 2 anos de...

Thales Group is seeking an Offensive Security Engineer to conduct penetration tests across web, network, cloud, and AD environments, and to support incident response activities. You will prepare detailed reports with actionable remediation and collaborate with DFIR, SOC, and security engineering to strengthen detections. Ideal candidates bring 3+ years in...

A Logicalis Portugal procura um Pentester para reforçar a equipa de cibersegurança. O/a candidato(a) realizará testes de intrusão em aplicações, infraestruturas e ambientes cloud, identificando vulnerabilidades e contribuindo para a melhoria da postura de segurança. Com experiência em ferramentas de pentest e conhecimento de OWASP Top 10,...

Location : Remote Fluent Language Skills Required: English & Portuguese (global, excluding Brazilian Portuguese). Native fluency in English and Portuguese (global, excluding Brazilian Portuguese) is required for this position. Why This Role Exists At Mercor, we believe the safest AI is the one that is already been attacked - by us. We are assembling a red...

Mercor is seeking an AI Safety Red Teamer for a remote, contract role. You will design adversarial prompts to stress-test frontier AI models, identify jailbreaks and unsafe behaviors, and help improve safety posture through rigorous evaluation. You will document vulnerabilities, contribute to benchmarking, and collaborate with researchers to advance model...

PrimeIT is seeking a System Administrator in Porto, Portugal, to join a rapidly expanding technology team. The role requires hands-on Linux system administration, VMware expertise, and automation skills to support modern infrastructure.You'll work with Ansible and Terraform, operate with Red Hat environments, and communicate in English at B2 level as part of...

Primeit in Lisbon offers a hybrid role for a Red Team Operator within an internationally oriented project. You will join a growing team of Primers and conduct red team activities and web application pentesting.Required: at least 2 years in red team and pentesting, strong Burp Suite and scripting skills (Python, Bash), and CEH or PNPT certification. OSCP/ETC...

A Redshift Consulting procura um Pentester Senior (M/F) para integrar a nossa RedTeam. O candidato ideal tem experiência sólida em pentesting de infraestrutura e web, e participação em atividades de incidente com SOC.Requisitos incluem Engenharia Informática, pelo menos 4 anos de pentesting, conhecimento de Python/PowerShell, e inglês fluente. O regime...

A multinational cybersecurity firm is seeking a Red Team Consultant in Portugal to enhance security measures through ethical hacking and incident mitigation. The role focuses on analyzing and implementing security technologies while providing support for security incident analysis. Candidates should possess strong skills in Red Team operations, vulnerability...

PrimeIT is seeking a System Administrator in Porto, Portugal, to join a rapidly expanding technology team. The role requires hands-on Linux system administration, VMware expertise, and automation skills to support modern infrastructure. You'll work with Ansible and Terraform, operate with Red Hat environments, and communicate in English at B2 level as part...

Administrador de sistemas com experiência entre 2 a 5 anos para atuar em Porto num modelo híbrido. Responsável por infraestrutura, releases, deployments, monitorização e administração de ambientes.

AI Safety Specialist to lead adversarial testing and failure analysis for conversational AI models, documenting vulnerabilities remotely.