(Senior) Security Engineer (f/m/d) - onsite or remote
1&1 Mail & Media Applications SE | IT Cross Functionality / IT Security / Project Management / Process Management | Karlsruhe / Germany-wide / remote | Permanent | Full-time | Experienced professionals | Reference ID: 248
- Your tasks
Are you passionate about Cybersecurity and eager to take on responsibility? Do you thrive on pushing initiatives and tackling interesting security challenges? Are you always looking to stay ahead and continuously learn about the latest technical and security developments?
If so, this is the right place for you! Join our exceptional team of Security Engineers to elevate the security standards of Germany’s leading mail and cloud providers, WEB.DE and GMX. As a trusted partner for stakeholders at all levels, you will ensure the secure design, development, and operation of products for the WEB.DE, GMX, and mail.com brands. Your tasks will include conducting threat analyses, penetration tests, supply chain audits, and architecture and code reviews.
- First point of contact for security consulting: Be the go-to expert for all internal security consulting topics and assessments.
- Develop and operate internal security tools: Enhance our company's security posture by developing and operating our team's internal tools.
- Analyze and document security vulnerabilities: Identify security vulnerabilities, document findings, and communicate them effectively to responsible colleagues.
- Review partner company integrations: Assess technical integration concepts, security maturity, and contracts for security-relevant points.
- Prepare and conduct security trainings and workshops: Share and present security-relevant content with the company, especially our Security Champion community and engineers.
Our benefits
Lived corporate culture
Transparency, open communication and short decision-making processes
Wide range of further training
E-learning, seminars, conferences and mentoring
Renowned TEC-Campus
Conferences, lecture series, courses, open source projects, community meetings, user groups
Active health care
Sports and fitness classes, lectures, discounts at fitness and health centers, fresh fruit and drinks for free
Mobility
Generous subsidy for job bike leasing and the job ticket
Flexible working models
Home office, mobile office, flexible working hours, trust-based working time arrangements
Financial benefits
Company pension scheme, discounts on our products and various leisure activities
Legendary events
Summer and winter parties, additional workshops and team events
- Your profile
You have a technical degree or equivalent education? You have several years of experience in Cybersecurity and a track record of finding innovative improvements for complex situations? You are quick to understand intricate concepts and always looking for better solutions? You enjoy hands-on work, thrive in a team environment, and value a dynamic setting? If so, this might be a great place for you. The following points further increase your chances:
- Strong engineering mindset: You are a problem solver and continuous improver with a broad technical background. You are well-versed in at least one of the following: distributed web applications, protocols, operating systems, or networks.
- Coding skills: You know how to code, ideally in Python. You understand modern software development and have hands-on experience with concepts and technologies like DevOps, CI/CD, and Kubernetes.
- Team player with leadership skills: You lead by example and manage tasks and stakeholders effectively.
- Excellent communication skills: You are proficient in written and verbal English. Ideally, you know German or are willing and motivated to learn it.
- Our benefits in detail
- Our corporate culture: No dress code, flat hierarchies, open and transparent communication
- Individual development opportunities: diverse training courses, e-learning and internal communities, language courses, mentoring
- Events: Slack Days, open source projects, meet-ups
- Relocation service: support with the relocation to Germany
- Benefits and additional services: company pension scheme, capital-forming benefits, discounts on own products, job ticket, bike leasing, corporate benefits portal
- Attractive working conditions: 30 days holiday, hybrid working, full-time and part-time arrangements, free choice between Linux, Mac or Windows
- Social: team events, summer and winter parties, family and care service, sports and fitness programmes, subsidised canteen, free fruit and drinks, health courses
- Topics that are also important to us: Sustainability, diversity and our values and leadership principles - find out more on our website mail-and-media.com
We are brand. With GMX, WEB.DE and mail.com and over 42 million active users, we are the leading email and communication platform in Germany, Austria and Switzerland.
We are future. Our services and apps simplify digital life from cloud storage to news and ID management.
You are at home. Your digital passion finds a professional home with us. Your strength makes us stronger, your expertise complements our ideas, your success becomes visible. Together we shape the digital future.
Diversity enriches. Different cultures, nationalities, genders, age groups, sexual orientations and religions as well as people with disabilities - we desire diversity and encourage it. Because only teams that reflect all facets of society offer the best framework conditions for creativity and make a company productive and distinctive. We value diversity and welcome all applications.

Apply now
We look forward to receiving your application, including your salary expectations and the reference number given above. Please use our online application form. If you have any questions about the position or the application process, please send us an email.
1&1 Mail & Media Applications SE
Recruiting & Candidate Management
Brauerstraße 48
D-76135 Karlsruhe
We are awarded!


