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Location: Tubize, Belgium Thales in Belgium is part of an internationally leading technology group in the defence and security, aerospace as well as digital identity and security markets. In a world characterised by uncertainties, we ensure that our customers, partners and employees can pursue new paths with confidence. For a future we can all trust. We say HI* – welcome to the Thales team! *Human Intelligence Say HI* – to your career as Senior Cybersecurity Architect (Technical Directorate) Location:Tubize #LI-HYBRID In Tubize, you will join more than 250 colleagues recognized by domestic and international partners for expertise on products such as Radio Frequency (RF) Products, C4ISR, Crypto Global Solution, MACS (Aeronautical Intercom) and many others. Today the Group employs more than 1,000 people across nine sites in Belgium. Discover all Thales activities in Belgium here. Your role As part of the Technical Directorate of Thales Belgium, you will be responsible for steering the technical policy of the entity on cybersecurity matters, in strong cooperation with the Product Security Office. You will provide senior expertise to support architecture definition, challenge engineering approaches and validate design decisions. Bringing important cybersecurity expertise and field experience, you are a herald of the Secure-by-Design culture in the company. Your mission Customer-Centric Solution Design: Analyze stakeholder needs, define optimal cryptographic architectures, and ensure alignment with security requirements while acting as the primary technical interface for solution-related discussions. End-to-End Technical Mentoring: Support and advise system specification, design, and Make/Team/Buy decisions, collaborating with cross-functional teams (hardware, software, security, QA) to deliver robust, compliant solutions in all fields, including cybersecurity and cryptography centric topics. State-of-the-Art Cryptography Expertise: Provide deep technical authority in cryptography, guiding innovation, risk assessment, and best practices to address evolving threats and regulatory standards. Full-Lifecycle Documentation & Traceability: Review and validate technical documentation (HLD/LLD, test plans, user manuals) and validate consistent & seamless traceability from requirements to implementation, validation, and deployment. Pre-Sales & Implementation Support: Partner with sales/marketing for technical pre-sales (RFIs/RFPs, demos) and mentor development/testing teams to guarantee on-time delivery, security compliance, and performance goals. What we are looking for Engineering degree in Telecommunications, Cybersecurity or a related STEM field. 5+ years designing embedded security systems (requirements, architecture, testing). 3+ years in 3 or more of: model-based system engineering, Common Criteria certification, cybersecurity solution deployment (firewalls, anti-DDoS, risk management), IP/IPv6 networking, or embedded Linux. Proven track record in security certification frameworks (e.g., Common Criteria) and adherence to technical/governance constraints in high-assurance environments (e.g., classified or regulated sectors). Passionate about diverse tech integrations, continuous learning, and problem-solving. Strong communication skills in English. Experience in knowledge sharing (seminars, webinars, whitepapers) is valued. Oriented toward customer satisfaction, pragmatic delivery, and cross-functional collaboration to bridge technical, business, and operational gaps. Thales is a global technology leader with more than 81,000 employees on five continents. The Group is investing in digital and “deep tech” innovations – Big Data, artificial intelligence, connectivity, cybersecurity and quantum technology – to build a future we can all trust. For more than 20 years, Thales has pursued a robust corporate social responsibility (CSR) policy based on the highest international standards. The principles behind this policy are now captured in the company’s purpose of “building a future we can all trust”, which was adopted in 2020. Say HI* – Your journey to us At times of change our international teams are ready to meet the complexity of today with the industry-leading technologies of tomorrow. Will you be part of it? We are looking forward to your online application. Great journeys start here, apply now! Camilla Christovam Talent Acquisition Partner #LI-CC1 Interested in finding out more about Thales and why you should join us? Say HI* to new career opportunities. 
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Thales
Tubize, Belgium
Senior Cybersecurity Architect (Technical Directorate).
REMOTESENIOR LEVELENGINEERING
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