Lead Security Engineer

Why Scout24? Scout24 is home of ImmoScout24, Germany’s #1 for real estate. With ImmoScout24 we have been revolutionizing the real estate market in Germany and Austria for more than 25 years. Our goal is to build a digital ecosystem that brings homeowners, seekers, and agents together. Finding the right home and property is one of the most important decisions in life. So is your career! #WorkingatScout24 means being part of a diverse and inclusive team of around 1100 colleagues and 58 nationalities. We embrace difference and celebrate individuality. By encouraging open mindedness and authenticity we enable a true learning culture and prepare the ground for personal development. Mistakes are a chance to grow and to innovate. Together we act proactively, strive for improvement, and take responsibility. We talk about success and challenge while treating each other with respect because we are #oneteam. If this sounds interesting to you, we would love to see you joining us! Even if you may not tick all the boxes of the job requirements, we are happy to hear about the value you can add to the team. Grow with us!. Welcome home! Aside from our people and company culture we are offering awesome benefits that make Scout24 a great place to work! Compensation: A competitive salary package and a bonus on top. Flexibility: We offer a hybrid work model with three days of on-site work per week in the office, and you can organize the remaining days as you wish. We offer you 30 days of vacation per year.Work from abroad: We offer you the possibility to work from abroad for 10 days per year, subject to the business requirements of the company and team.Relocation: Our relocation agency supports you with your visa process and an attractive relocation package. Use our products: As an employee you can take advantage of our plus membership for tenants on ImmoScout24 to find a new place to live. Development: Dedicated learning time per month, online courses on our ScoutAcademy, regular book challenges, structured feedback, “Lunch & Learn”-Events and individual career paths to push your career to the next level.    Have kids? We'll support you with a professional family service, which helps you to find a childcare center or offers emergency childcare.   Furry feel good manager: Bring your dog to work (upon approval, as we prioritise the well-being of our employees and ensure that our dog policy is considerate of allergic individuals and prevents overcrowding on each office floor). Mobility: We subsidize public transport or Job Bikes. Commitment to sustainability and Diversity, Equity & Inclusion (DEI): We have clear environmental and climate protection goals and are involved in social activities and charitable organizations throughout the year. We live the diversity. Our theme weeks on diversity, mental well-being, and other social issues give us time and space to develop ourselves on DEI and sustainability.Pension scheme: We offer a company pension scheme and support your own contribution with an attractive subsidy.Most innovative office: Our office is barrier-free and in the heart of Berlin right at the central station. It was awarded for the most innovative office concept. We have an own gym with regular courses, napping room, rooftop terrace, organic coffee, cafeteria, 100% green electricity and a massage therapist that comes in once a week.Health: Life Situation Coaching, regular health check upsWe are a tech company: We work with the latest technical tools and hardware.  As Lead Security Engineer in our Security Engineering team, you will shape how Scout24 secures the products people rely on for important life decisions, the cloud infrastructure behind them and our growing use of AI. This is a hands-on senior individual-contributor role without direct line-management responsibility. You will have the autonomy to set technical direction, lead our most complex security initiatives and turn difficult risks into controls that work at scale. Working closely with Product, Engineering, Platform, Data and AI teams, you will make secure ways of building the easiest ways of building. How Your Role Will Look Like Own the technical direction and engineering outcomes for product, cloud infrastructure and AI security, helping shape the Security Engineering roadmap and priorities. Design, implement and evolve reusable controls, guardrails and security-as-code patterns across cloud, identity, containers, infrastructure as code and CI/CD. Lead threat modelling and security architecture reviews for high-impact products, platforms and AI-enabled capabilities, identifying risks early and defining practical mitigations. Create paved roads and self-service security capabilities that reduce developer friction and help engineering teams deliver securely by default. Use evidence and meaningful metrics to prioritise investments, demonstrate control effectiveness and communicate risk and trade-offs clearly. Be a trusted technical authority and escalation point: mentor engineers, challenge constructively and raise security capability across Scout24. What You Need To Succeed A strong record of hands-on security engineering and technical leadership in a medium-to-large engineering organisation, with ownership of complex initiatives from direction through implementation.Deep expertise in application or cloud security, together with enough breadth across infrastructure, identity and data security to make sound end-to-end decisions. Experience building security controls for cloud-native environments, ideally AWS, including containerised workloads, infrastructure as code and CI/CD systems. Strong software engineering and automation skills. You are comfortable writing production-quality code or tooling using technologies such as Python, Terraform or comparable alternatives. Practical experience with threat modelling, secure architecture and embedding security throughout the software development lifecycle. Excellent judgement and communication: you can turn ambiguous risks into clear decisions, balance security with customer and operational impact, and influence without relying on formal authority. A self-driven, adaptable and pragmatic working style, with the curiosity and continuous-improvement mindset needed in a changing technical and threat landscape. Experience leveraging AI tools to drive problem-solving and productivity, maintaining effective human oversight and judgement. Nice to have Hands-on experience securing AI-enabled products, LLM applications, agents, machine-learning platforms or their supporting data pipelines. Experience with Kubernetes and modern application, cloud or software-supply-chain security tooling. Experience protecting sensitive data and implementing effective technical controls in environments subject to GDPR, ISO 27001 or comparable requirements. We aim to further enhance the diversity of our company and support the professional development of people with disabilities. We have a disability representative who will assist you throughout the application process. If you require this support, please let us know in advance.