Senior Java Developer (f/m/d) - onsite or remote / home office

1&1 Mail & Media Applications SE | IT Software Development | Karlsruhe / Nationwide (Germany) / Munich | Permanent | Full-time | Experienced professionals | Reference ID: 3545

  • Tasks that ignite your passion

    With a market share of over 50 percent and more than 43 million users, GMX and WEB.DE are among the most widely used e-mail providers in Germany. Chances are high that some of your acquaintances also use our products and that we accompany them in their everyday life.

    Our goal is to offer our customers the best possible product experience. To achieve this, we are looking for great backend developers to join us and become part of the next chapter of our success story. Join our team and develop the next generation of products based on modern technologies like Java 17, SpringBoot 3, Kubernetes, Kafka, and Cassandra!

    Whether you prefer to work in one of our offices in Munich or Karlsruhe or completely remote, we offer flexible working hours and value a healthy work-life balance. Our cross-functional, agile teams offer you the opportunity to participate in various phases of product development: from product discovery to the implementation of new features and products. In addition, you can expect a variety of training courses, ranging from technical topics such as IT security to soft skill trainings such as moderation. You will also have the opportunity to participate in internal and external conferences and to continuously develop yourself personally.

    • You will develop services for our extensive single sign-on infrastructure using Java 17, Spring Boot 3, Kubernetes, Kafka and Cassandra.
    • You will design and develop highly scalable, high-load, and fail-safe software that runs in our own high-performance data centers around the world.
    • You will work with colleagues from different departments on a daily basis, e.g. frontend developers, other backend developers, colleagues from quality assurance, as well as operations engineers and our product owner.
    • You are part of the architectural decisions, write clean, maintainable and testable code and bring in new ideas to improve the code base and features.
    • You will work on your own projects during "slack days" or try out new technologies on prototypes.

Advantages you enjoy

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

Inexpensive job bike

Generous subsidy for job bike leasing

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 qualifications which inspire us

    Your passion is backend development and your aspiration is to develop a great product for our customers? You would like to be part of a cross-functional development team? You like to learn new things and are a real team player? Then we are looking forward to your application.

    • You have several years of experience in object-oriented and functional software development with Java 11 or higher and are familiar with "clean code" and the development of distributed systems.
    • You can develop secure and modern web services using Spring Boot. Good knowledge of Linux, relational databases and the NoSQL database Cassandra is an advantage.
    • You are familiar with modern principles such as cloud-native, you keep your knowledge up to date regarding new trends & technologies and ideally have hands-on experience with Docker, Kubernetes and Kafka.
    • You are a strong communicator, your way of working is precise and you like to take responsibility.
    • You appreciate working in an agile team and enjoy learning new things.

We are brand. With GMX, WEB.DE and and over 43 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

Job search