As an R&D Cybersecurity Software Engineer, you develop, design and test software for complex, technical applications in different high-tech domains. In this role, you contribute to solutions for clients in telecom, industrial automation, video/audio processing, and IoT. You will be involved in all phases of the development process – from analysis and design to implementation, testing, and documentation. Thanks to long-term projects, you will have the opportunity to dive deep and work with cutting-edge technology. What excites you as a R&D Cybersecurity Software Engineer? Based from one of our offices in Belgium and in average 3 days per week at our clients' office you like to keep yourself busy with: Designing and documenting secure embedded software solutions. Implementing and monitoring cybersecurity measures within the Secure Software Development Life Cycle (SSDLC). Performing code reviews, static and dynamic vulnerability analyses. Translating NIS2 and CRA requirements into concrete policies and controls. Developing security risk assessments and threat models. Keeping up to date with cybersecurity trends and legislation. Participating in product certifications and audits related to IEC 62443. Providing input for incident response plans and security testing. Setting up automated security tests and integrating them into CI/CD pipelines. Sounds good so far? We'd love to tell you more… Your future workplace This is what you bring to the table Master degree in IT security, computer science or a related field At least 3 years of experience with C/C++ and cybersecurity, preferably in an industrial or embedded context Knowledge of NIS2, CRA and IEC 62443 standards Familiarity with embedded Linux and/or RTOS environments Strong knowledge of cryptography, security protocols and authentication Experience with vulnerability analysis and penetration testing tools Problem-solving skills for complex software and security issues Speak Dutch (or willing to learn) or English fluently This is what you can expect in return An indefinite contract with a stable employer in full growth. A competitive salary complemented with additional benefits (company car with fuel card, group insurance, hospitalization insurance, expense allowance, meal vouchers). Personal coaching and a generous training budget of €6,000 per year, enabling you to continuously develop yourself. Flexible and hybrid working. We value a healthy work-life balance. You will receive 20 vacation days + 12 additional compensation days (ADV). Work alongside the best in their field, who share your passion for technology. A warm and collegial culture where knowledge sharing and enjoyment are central. From family events and unique activities with colleagues, to innovative knowledge sessions and delightful lunches. Sioux Belgium – where ambition and trust come together Are you looking for an exciting career opportunity in Belgium where you can fully leverage your technical talents? Then is Sioux the perfect match for you! At Sioux, our employees are at the heart of everything we do. We believe in creating a working environment where you can grow, pursue your ambitions, and take your career to the next level. Read more about Life at Sioux .Curious about our challenging projects? Click. Important note: This position requires access to controlled technology, as defined in the US Export Administration Regulations (15 C.F.R. § 730, et seq.). Qualified candidates must be legally authorized to access such controlled technology prior to beginning work. Business demands may require Sioux to proceed with candidates who are immediately eligible to access controlled technology.