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Cyber Security Engineer with CTF, Reverse Engineering, and Ethical Hacking Expertise

NielsenIQ

Full-time|On-site|Lisbon/Porto

Join NielsenIQ as a Cyber Security Engineer where your skills in Capture The Flag (CTF), Reverse Engineering, and ethical hacking will be put to the test. This role is pivotal in safeguarding our digital infrastructure against evolving security threats. You will engage in hands-on security assessments, develop innovative solutions against bot attacks, and co…

Mar 18, 2026

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Cyber Security Engineer

inetum2

Full-time|On-site|Lisbon

Join our dynamic team as a Cyber Security Engineer at inetum2 in Lisbon. In this role, you'll be responsible for safeguarding our digital assets and ensuring the integrity of our IT infrastructure.We are looking for a proactive individual who is passionate about cybersecurity and dedicated to implementing best practices. You will collaborate with cross-functional teams to identify vulnerabilities and develop effective strategies to mitigate risks.

May 15, 2025

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Security Engineer

GoCardless

Full-time|On-site|Lisbon, Portugal

Join GoCardless as a Product Security Engineer and play a pivotal role in enhancing the security and privacy of our innovative payment solutions. In this collaborative position, you will work alongside development teams to establish security requirements, conduct design reviews, and perform vulnerability assessments. Your expertise in securing cloud-native environments will allow you to embed security practices across the engineering process, ensuring robust protection against threats. You will also automate security and privacy processes, contributing to the overall security posture of the organization.

Feb 5, 2026

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Cloud Security Engineer II (AWS) - Remote

Tripadvisor Inc.

Full-time|Remote|Lisbon

About TripadvisorThe Tripadvisor Group connects individuals to unforgettable experiences, aiming to be the most trusted source for travel and adventures globally. Leveraging our extensive brands and technology, we engage our worldwide audience with partners through rich content, insightful travel guidance, and two-sided marketplaces for experiences, accommodations, restaurants, and various travel categories. Tripadvisor, Inc. (Nasdaq: TRIP) encompasses a diverse portfolio of travel brands, including Tripadvisor, Viator, and TheFork.We are seeking a proactive Cloud Security Engineer II (AWS) to serve as the primary defense for the Tripadvisor Experiences platform. This vital mid-level role integrates proactive security engineering with reactive incident response. You will immerse yourself in our cloud environment, continuously monitoring for threats, addressing security incidents, automating defenses, and collaborating with our engineering teams to enhance platform resilience.Job Location: This is a remote or hybrid position based in Portugal. Occasional travel to company offices may be required.

Mar 19, 2026

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Associate Security Engineer - Data Protection

icapitalnetwork

Full-time|On-site|Lisbon, Portugal

Position Overview We are in search of a dedicated and technically skilled Associate Security Engineer with a strong emphasis on security technologies. This role is pivotal in supporting and enhancing our enterprise security framework. The successful candidate will collaborate closely with senior engineers and security analysts to implement, maintain, and troubleshoot essential security infrastructure components, including Data Loss Prevention (DLP) solutions, email security platforms, firewalls, VPN solutions, and Cloud Access Security Broker (CASB) tools. Key Responsibilities Assist in the deployment, configuration, and ongoing maintenance of DLP solutions to prevent unauthorized data exfiltration across endpoints, email, and cloud platforms. Support email security tools (e.g., Proofpoint, Mimecast, Microsoft Defender) to safeguard against phishing, spam, and malware attacks. Monitor and manage firewall policies and rule sets across perimeter and internal firewalls (e.g., Palo Alto, Fortinet, Cisco ASA). Maintain and troubleshoot VPN infrastructure (e.g., Cisco AnyConnect, GlobalProtect, OpenVPN) to ensure secure remote access for users. Collaborate on the integration and tuning of CASB solutions (e.g., Netskope, McAfee MVISION, Palo Alto, Microsoft Defender for Cloud Apps) to enforce robust cloud security policies. Participate in incident response and troubleshooting efforts related to security infrastructure. Document configurations, procedures, and troubleshooting steps for knowledge sharing and compliance purposes. Stay abreast of emerging security threats and technologies pertinent to the role.

Jan 22, 2026

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Cloud Security Engineer - Assistant Vice President

iCapital Network

Full-time|Remote|Lisbon, Portugal

About the Role iCapital Network is seeking a dedicated Assistant Vice President of Cloud Security Engineering to enhance our Information Security team. In this pivotal role, you will develop and oversee cloud security initiatives, architect innovative security solutions, automate processes, and proactively identify vulnerabilities within iCapital's technology landscape. The ideal candidate is a seasoned professional with a blend of research, design, and implementation skills in security technologies, capable of leading small engineering teams while fostering cross-departmental collaboration. Key Responsibilities Develop and manage comprehensive Cloud Security Programs for AWS, Azure, and GCP, ensuring continuous monitoring and mitigation of vulnerabilities in our cloud infrastructure. Implement solutions to rectify security misconfigurations. Work closely with the DevOps team to innovate processes, adopt best practices, and uphold technology standards. Create automation tools for monitoring and alerting on AWS infrastructure maintenance. Enhance, develop, and rigorously test new cloud infrastructure capabilities for secure functionality. Establish processes and automation for application code security assessments, workflows, and testing in collaboration with development teams. Support the Security Operations Center (SOC) in developing detection and alert mechanisms. Formulate workflows for SaaS security programs. Collaborate with Risk and Governance teams to develop policies, procedures, and standards. Engage with cross-functional teams, including DevOps and Security Engineering, to deliver on security initiatives. Qualifications 5-10 years of experience in cloud environments, with a strong preference for AWS. AWS Certified Solutions Architect or equivalent certifications highly desirable. A commitment to staying updated with the latest trends in cloud security, emerging threats, and evolving technologies. Experience in Infrastructure as Code or systems engineering, as well as scripting proficiency. Exceptional verbal and written communication skills. Fluency in Portuguese and English is essential. Able to influence and engage stakeholders effectively. Proven ability to drive projects to completion. This role is fully remote, although some positions may require in-office attendance based on departmental needs.

Mar 31, 2026

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Junior Security Operations Engineer

Mollie

Full-time|On-site|Lisbon

Your OpportunityJoin Mollie on our mission to simplify payments and financial management for businesses across Europe. We proudly serve over 250,000 businesses, striving to eliminate the financial barriers that stifle innovation and growth. Our vision is for managing money and accepting payments to be a smooth experience for all our merchants.In this hands-on role, you will play a crucial part in safeguarding Mollie's operations by managing security incidents and engaging in various security operations tasks, such as threat hunting, threat intelligence analysis, and automation.You will collaborate with an established SecOps team of mid- to senior-level experts, providing you with ample opportunities to showcase your skills and make a significant impact.

Apr 3, 2026

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Purple Team Security Engineer (SIEM & Detection) at inetum2 | Lisbon

inetum2

Full-time|On-site|Lisbon

Role Overview inetum2 is seeking a Purple Team Security Engineer focused on SIEM and Detection to join the team in Lisbon. This position connects offensive and defensive security efforts to strengthen the organization's defenses against cyber threats. What You Will Do Work with multiple teams to design and apply security measures. Conduct threat assessments to identify and address vulnerabilities. Enhance incident response processes and capabilities. Location Lisbon

Apr 17, 2026

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Senior Vice President, Head of Security Engineering

iCapital Network

Full-time|On-site|Lisbon, Portugal

About the Role iCapital Network is seeking a dynamic Head of Security Engineering to spearhead and enhance our security engineering operations in a regulated financial services environment. This pivotal role merges deep technical expertise, practical operational skills, and effective team leadership to ensure our security architecture, tools, and processes are scalable, robust, and compliant with regulatory standards. In this role, you will oversee a team of security engineers while actively engaging in technical challenges, including leading incident investigations and designing secure architectures. You will collaborate closely with Engineering, DevOps, Infrastructure, and Technology/Development teams to integrate security throughout the software development lifecycle and within cloud infrastructures.

Mar 31, 2026

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Security Engineer at Air Apps | Lisbon

Air Apps

Full-time|On-site|Lisbon

About Air AppsAt Air Apps, we are driven by a vision to innovate and accelerate. Founded in Lisbon, Portugal in 2018, we are on a mission to revolutionize personal and entrepreneurial planning with our groundbreaking AI-powered Personal & Entrepreneurial Resource Planner (PRP). With over 100 million downloads globally, our self-funded journey has expanded our footprint to San Francisco while maintaining our commitment to pushing the limits of AI technology.We challenge the norm daily, striving to create AI-driven solutions that have a meaningful impact on people's lives. Join our team where your creativity will shape products that empower individuals worldwide.Be part of our mission to redefine resource management and transform lives.The RoleAs a Security Engineer at Air Apps, you will play a crucial role in protecting our applications, infrastructure, and data from potential threats and vulnerabilities. You will collaborate closely with development, DevOps, and IT teams to establish secure coding practices, conduct vulnerability assessments, and develop threat models to ensure our systems are fortified against cyber threats.Your expertise will be essential in building and maintaining a secure development lifecycle (SDLC), security monitoring frameworks, and proactive risk mitigation strategies.ResponsibilitiesCreate and implement threat modeling strategies to identify security vulnerabilities across applications and infrastructure.Perform vulnerability scanning, penetration testing, and security assessments to uncover weaknesses.Collaborate with development teams to establish and enforce secure coding standards.Partner with DevOps to integrate security measures into CI/CD pipelines and automate security testing.Monitor and address security incidents, conducting root cause analyses and implementing preventive strategies.Ensure adherence to security regulations and standards such as ISO 27001, GDPR, and SOC 2.Design and implement identity and access management (IAM) policies, encryption protocols, and authentication processes.Work with product teams to perform security evaluations of features, APIs, and third-party integrations.

Feb 17, 2026

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Senior AI Engineer - Bits AI Security Analyst

Datadog

Full-time|Hybrid|Lisbon, Portugal

At Datadog, our mission is to integrate security and observability for modern organizations. Our Bits AI for Security is an innovative AI agent that utilizes large language models (LLMs) to assist analysts in investigating alerts, comprehending threats, and enhancing response times. We are in search of a product-focused AI Engineer to help us develop the next generation of AI-powered security solutions. We cherish our workplace culture at Datadog, which fosters relationships, collaboration, and creativity. Our hybrid work model allows Datadogs to strike a balance between their professional and personal lives.

Feb 27, 2026

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Network and Firewall Engineer

inetum2

Full-time|On-site|Lisbon

As a Network and Firewall Engineer at inetum2, you will play a pivotal role in designing, implementing, and maintaining our network infrastructure and security systems. You will ensure the integrity, availability, and confidentiality of our data while optimizing network performance. Your expertise will help us safeguard our digital assets and maintain seamless connectivity for our operations.

Feb 21, 2025

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Forward Deployed Security Engineer (AI Systems) | Portugal

Supermodular AI

Full-time|On-site|Lisbon

About UsAt Supermodular AI, we empower organizations to successfully navigate the complexities of AI Transformation. Our philosophy centers on actionable strategies that yield tangible results.While many companies recognize the transformative potential of AI, they often find it challenging to implement this technology into their existing operations. The real obstacles typically lie not in the technology itself but in the integration of AI within long-standing processes and systems. We believe that true transformation is achieved not just through strategic documentation, but through the actual development, deployment, and management of AI systems in real-world environments.We collaborate closely with enterprise IT and software development teams to design and implement robust AI systems tailored to their unique challenges. This partnership enables engineering teams to innovate and adopt AI-native development methodologies that fundamentally alter the way they create and operate software. Additionally, we specialize in constructing custom AI solutions that overcome modernization hurdles where conventional approaches have faltered.Our team boasts a proven history of developing impactful AI systems and scaling engineering teams within complex enterprises. If you thrive on tackling challenging enterprise issues and are excited about transforming ambitious concepts into operational systems, Supermodular AI is the right place for you.Your ResponsibilitiesAs a Forward Deployed Security Engineer (AI Systems) at Supermodular AI, you will collaborate with enterprise IT and software teams to ensure the secure, reliable, and safe operation of AI systems in production settings.You will be integrated within real enterprise environments, partnering with engineers and technical leaders to assess current system operations, identify weaknesses, and understand how AI can impact the risk landscape.Your responsibilities will involve navigating complex and often imperfect system architectures, pinpointing vulnerabilities, creating secure frameworks, and fortifying systems that may not have been initially designed with AI considerations in mind.Your engagement will encompass the complete lifecycle of projects. You will contribute to early-stage technical strategies, embed security and reliability into system designs, and implement necessary safeguards to ensure systems function effectively under real-world conditions.Many of the environments you will encounter may lack cleanliness and completeness; systems could be poorly integrated or designed without security in focus. Your mission will be to introduce structure and resilience to these settings by building and securing systems capable of safe operation in challenging circumstances.

Apr 13, 2026

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Network Engineer at Inetum | Lisbon

Inetum

Full-time|On-site|Lisbon

At Inetum, we are dedicated to leveraging technology to enhance lives and facilitate genuine business transformation. We are seeking a talented Network Engineer to become a vital part of our global team, focusing on the design, security, and operational excellence of the networks that uphold our international presence.If you are eager to engage with state-of-the-art infrastructures in a vibrant, multicultural setting, this opportunity is perfect for you.Key Responsibilities:Collaborate with an international team managing Network & Security operations for the Inetum Datacenter and global corporate networks.Design, operate, and maintain enterprise-level network infrastructure, firewalls, and network services.Conduct proactive tasks to ensure optimal availability, performance, and reliability of WAN, LAN, VOIP, and related services.Oversee and enhance critical services including DNS, VPN, routing, switching, and security policies.Implement complex IT projects across WAN, LAN, VOIP, server, and network platforms.Provide secondary support for broader network functions at the enterprise level.Deliver exceptional support to both local and remote end-users.Maintain precise documentation and contribute to knowledge base improvements.Make daily operational decisions to ensure the continuity and security of network services.

Feb 24, 2026

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Backend Software Engineer

Dashlane

Full-time|On-site|Lisbon, Portugal

Join Dashlane as a Backend Software Engineer and be part of a dynamic team dedicated to enhancing digital security for our users worldwide. In this role, you will design, develop, and maintain scalable backend systems that support our innovative applications. Your contributions will directly impact the user experience and the overall success of our products.

Apr 7, 2026

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IAM Engineer (SailPoint Expert) at Devoteam Cyber Trust | Lisboa

Devoteam

Full-time|On-site|Lisboa

Devoteam Cyber Trust seeks an IAM Engineer with strong SailPoint expertise to help banking clients in Lisboa improve their identity and access management systems. This position centers on both designing and implementing IAM solutions that protect sensitive information and streamline daily operations. Key responsibilities Create and deploy IAM solutions using SailPoint, tailored for financial sector needs Collaborate with teams from different disciplines to keep projects moving and meet deadlines Contribute to the ongoing improvement and support of IAM services Location This role is located in Lisboa.

Apr 22, 2026

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Vice President - Full Stack Engineer with Elixir Expertise

iCapital Network

Full-time|On-site|Lisbon, Portugal

About the Role iCapital Network is on the lookout for a talented Full Stack Engineer to become a vital member of our iCapital Identity Platform team. In this pivotal role, you will play a crucial part in defining and delivering innovative features across our software platforms. Collaborating closely with Product Management and Design, you will engage throughout the software development lifecycle—scoping requirements, reviewing progress, and addressing any issues that arise during both automated and manual testing. The iCapital Identity platform utilizes a modern tech stack, with the frontend built in TypeScript, React, GraphQL, and Relay. The backend is powered by Elixir/Phoenix, alongside components developed in Go and Node.js, with PostgreSQL serving as the database. Our infrastructure is hosted on AWS and managed using Terraform.

Mar 13, 2026

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Mid-Level DevSecOps Engineer (AWS) at Tripadvisor | Lisbon

Tripadvisor, Inc.

Full-time|Hybrid|Lisbon

Tripadvisor Experiences (Viator) is looking for a Mid-Level DevSecOps Engineer to help secure its AWS-based platform. This role centers on proactive security engineering and hands-on incident response for a large-scale travel experiences marketplace. Role overview The DevSecOps Engineer II will monitor the AWS cloud environment for security threats, respond to incidents, and automate security processes. Collaboration with engineering teams is a key part of the job, working together to strengthen platform security and ensure safe travel experiences for users worldwide. Key responsibilities Monitor AWS infrastructure for security threats and vulnerabilities Respond to security incidents and support investigations Automate security processes to improve detection and response Work closely with engineering teams to embed security best practices Location This is a hybrid position based in Portugal. Occasional travel to the Lisbon office may be required.

Apr 28, 2026

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Security Administrator

inetum2

Full-time|On-site|Lisbon

Join inetum2 as a Security Administrator, where you'll play a vital role in safeguarding our digital assets and ensuring the integrity of our systems. You will be responsible for implementing security measures, conducting risk assessments, and responding to security incidents. Your expertise will help us maintain a secure environment for our clients and support our ongoing commitment to excellence.

Jan 7, 2026

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Security Architect

inetum2

Full-time|On-site|Lisbon

Join inetum2 as a Security Architect, where you will play a crucial role in designing and implementing robust security architectures that safeguard our digital assets. Your expertise will be key in identifying vulnerabilities and establishing protocols to mitigate risks, ensuring the integrity and confidentiality of our systems.

Oct 17, 2025

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