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Senior Cybersecurity Consultant

Posted 26 May 2026
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Work experience
3 to 6 years
Full-time / part-time
Full-time
Job function
Degree level
Required languages
English (Fluent)
Dutch (Fluent)

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Join Sia's Cybersecurity Business Unit as a Senior Cybersecurity Consultant, working across consulting, implementation, or auditing depending on your skills and area of expertise.

Company description

Sia is a next-generation, global management consulting group. Founded in 1999, we were born digital. Today our strategy and management capabilities are augmented by data science, enhanced by creativity and driven by responsibility. We help clients initiate, navigate and benefit from transformation. With expertise across a broad range of sectors and services, our 3,000 consultants serve clients worldwide from 48 locations in 19 countries.

Job description

Cyber Strategy

  • Cyber for Boards & Executives; Cyber Target Operating Model; Cyber Due Diligence
  • Cyber Transformation; Cyber Maturity Assessment & Rating; Cyber Mentoring for Startups
  • CISOaaS | DPOaaS | BCMaaS | CMaaS

Cyber Risk

  • Cyber Risk Management; Cyber Risk Assessment & Treatment; Cyber Risk Quantification
  • Third-Party Risk Management; Cyber Insider Risk; Cyber Risk Analytics & Reporting
  • Cyber Risk Review SaaS: C2R

Cyber Compliance

  • Cyber Compliance Management: ISO 270xx, ISO 27701, ISO 223xx, BS 11200, LPM, NIS Directive, RGPD, SecNumCloud, RGS/PSSIE, SWIFT CSP, DSP2, HDS, PCI DSS, PA DSS, NIST
  • Cyber Assurance Framework
  • Data Privacy Assurance

Cyber Operations

  • Cloud Security
  • OT | SCADA | ICS Security; IoT | IIoT | WoT Security
  • Security Architecture; Security Configuration
  • Infrastructure & Endpoint Protection; Data Protection Technologies
  • IAM | PAM | IAG | CIAM | DAG
  • SSDLC | SecDevOps
  • Cryptography | Encryption

Cyber Resilience

  • Threat hunting; Digital Forensics; Incident Response
  • Vulnerability and Patch Management
  • Penetration Testing | Red Teaming
  • Wargaming and Crisis Management
  • IT Service Continuity Management; Business Continuity Management
  • Physical Security & Safety
  • Operational Resilience SaaS: STORM

As part of your operational interventions and contributions to the internal development of the firm, you will:

  • Innovate within the Sia CyberLab by developing new offers and SaaS solutions around advanced technologies, capitalizing on AI expertise, performing benchmarks and proof of concepts for cyber solutions, and participating in active monitoring of cyber news.
  • Become a cybersecurity trainer within the Sia Cyber Institute, contributing to the preparation and delivery of certified training sessions as an accredited trainer, as well as customized awareness and coaching sessions.
  • Participate in the development of the firm's cybersecurity expertise by contributing to publications such as articles, insights, white papers, studies, and webinars, and representing the firm at professional clubs, trade shows, and events.
  • Support business development through the design and development of business proposals and the identification of new collaboration opportunities with clients.
  • Manage projects from start to finish, or lead sub-projects within complex and/or international projects, ensuring proactive and regular reporting to the Manager and the Client.
  • Manage client relationships during missions and build strong relationships with client-side stakeholders at middle management level.
  • Supervise consultants from junior to confirmed level within missions or internal projects, acting as a referent and relay for the Manager/Senior Manager, validating deliverables, evaluating achievements, and supporting the development of their soft and hard skills.

Qualifications

  • You have a Master's degree in engineering, computer science, statistics, or econometrics.
  • You have 3-6 years of relevant working experience within a consultancy firm, including cybersecurity projects.
  • You have a strong interest in data and AI-related topics, the ability to quickly build expertise in these areas, and enthusiasm for helping clients seize the opportunities they offer.
  • Knowledge of Python, C++, Java, Ruby, Node, Go, and/or Power Shell.
  • Knowledge of IP Networks, Operating Systems (Unix/Linux, Windows and/or macOS), Cloud (AWS, Azure and/or GCP), Applications (Web Server, BDD, Middleware, etc.), as well as Cryptography; knowledge of Blockchain would be a plus.
  • You're a fast learner, communicative, flexible, and entrepreneurial.
  • English and Dutch communication and presentation skills.

What do we offer?

  • Competitive salary with extra advantages, including a company car or flexible mobility plan, structured yearly salary increases, and bonuses.
  • Flexible transport options matching personal needs.
  • A training plan to develop yourself as an expert in your discipline.
  • The opportunity to work from home, the client site, or the office in Amsterdam.
  • An international environment creating opportunities to share knowledge and collaborate on international projects with colleagues around the world.

Additional information

  • We are unable to provide a work permit for this position.
  • Non-Dutch speakers will not be accepted.

Sia Partners is a unique management consulting firm composed of passionate consultants who are able to drive business changes among our customers. Through unparalleled industry expertise, we are delivering superior value and tangible results for our clients.

Management Consulting
Amsterdam
Active in 16 countries
50 employees
70% men - 30% women
Average age is 30 years