Senior Network Security Consultant | Telecom Engineering CoE

Do you want to join one of the largest professional services organizations in the market? Then Deloitte is the right place for you. Here, you will have the opportunity to accelerate your career and strengthen your skills within our technology ecosystem. We are an international Tech Hub looking for top Telecommunications specialists to join our Centers of Excellence and community. At Deloitte, you will help transform the world as we know it and develop unique and innovative solutions across a wide range of complex transformation projects, delivering from Portugal to the world. We are strengthening our Telecommunications Network practice and are looking for experienced professionals who are naturally driven to work collaboratively and thrive in a multi-project environment. Discover the roles that best match your profile and take the next step in your career! Ready to join us? We're waiting for you. Your day-to-day responsibilities:

• Actively participate in consulting projects related to mobile and fixed telecommunications networks, with a focus on network transformation, security assessments, and strategic advisory services;

• Contribute to the design, planning, and assessment of secure network solutions, ensuring a holistic technical approach that integrates both business and technology requirements;

• Plan, coordinate, and, with the support of project teams, independently execute project activities, including risk assessments, security posture assessments, and compliance reviews;

• Collaborate with stakeholders and technical teams to identify security requirements, define mitigation strategies, and support the implementation of solutions aligned with international cybersecurity standards;

• Support the development of project deliverables, including technical reports, risk assessments, and presentations tailored to both technical and non-technical audiences;

• Manage relationships with clients and stakeholders within your scope of responsibility, ensuring alignment with project objectives and delivery expectations.

Are you the one we're looking for?

• 5 to 10 years of experience in security design, security operations, or security assessments of mobile and/or fixed telecommunications networks;

• Strong knowledge of network architectures, with experience in at least one of the following domains:

• Radio Access Networks (RAN);

• Mobile Core Networks (EPC, 5GC);

• Fixed Access/Core Networks;

• Transport Networks (e.g., IP/MPLS, WDM, Microwave);

• Satellite Infrastructure (VSAT) and Submarine Cable Systems;

• Edge Infrastructure and Telco Cloud, OSS/BSS, and network orchestration platforms.

• Proven experience in telecommunications network security design or security assessments and vulnerability analysis, aligned with leading frameworks and standards such as:

• NIST SP 800 Series;

• ISO/IEC 27001/27002;

• 3GPP TS 33.xxx;

• GSMA FS.

• Familiarity with security tools for vulnerability scanning, configuration validation, and compliance reporting is considered an advantage, but is not mandatory;

• Understanding of network security principles, traffic encryption, cryptographic protocols, and countermeasures against threats such as signal interception, spoofing, and interference is considered an advantage, but is not mandatory;

• Certifications in Telecommunications, Cloud, or Cybersecurity (e.g., Nokia, Ericsson, Huawei, Red Hat, AWS, GCP, ISO 27001, CEH, CISSP) are highly valued but not mandatory;

• Experience with network function virtualization/containerization (VNF/CNF) and lifecycle management is considered an advantage;

• Strong analytical and problem-solving skills, with critical thinking applied to complex environments;

• Excellent communication and interpersonal skills, essential in a client-facing consulting environment;

• Self-driven, proactive, and highly organized, with strong time-management skills;

• Team-oriented mindset, collaborative attitude, and the ability to build trusted relationships with clients and colleagues;

• Fluency in spoken and written English;

• Academic background in Telecommunications Engineering, Electrical Engineering, Computer Science, or a related field;

• Availability to participate in international projects.

Build a career tailored to you

• Work in a diverse environment that fosters continuous development and learning;

• Benefit from a personalized career development plan (technical and functional skills/opportunities), aligned with your current stage, needs, and career goals;

• Participate in impactful national and international projects within your area of specialization;

• Enjoy unlimited access to leading online learning platforms (LinkedIn Learning and Udemy);

• Access training and certification opportunities in the latest technologies, particularly Cloud technologies.

Experience a culture of connection

• A culture of innovation and excellence that positions us as industry leaders and trendsetters;

• A friendly environment built on respect, trust, transparency, and authenticity;

• A lifelong network that keeps you connected to leading knowledge alongside experts and industry leaders;

• The opportunity to join our communities (Technology, Innovation, Sports, and other interests) and actively contribute to social impact initiatives.

About Deloitte At Deloitte, you will never work alone. You will have the opportunity to take part in a variety of transformation projects and join a team that will inspire you and help you develop innovative solutions in a dynamic and collaborative environment, where you can bring your best self to work while benefiting from our well-being and flexibility initiatives. We are more than 5,500 professionals in Portugal, including over 2,600 working in technology-related areas, operating from offices and Digital Studios in Lisbon, Porto, Braga, Viseu, Coimbra, and Faro, as well as technology hubs in Braga. In addition, our teams in Portugal have a strong international presence, reflecting our global leadership in low-code/no-code solutions, telecommunications network engineering, organizational transformation platforms (ServiceNow and Apptio), and the financial services industry (Finastra, TIA, and Guidewire). If you are interested in exploring and developing your skills in technology solutions such as software engineering, cloud, systems integration, data analytics & data science, cyber risk, telecommunications network engineering, or UX design, and would like to work with technologies including AWS, Google, Oracle, Salesforce, SAP, MuleSoft, Feedzai, and SAS, among others, then you are in the right place. Learn more at .

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