Software Engineer with Java for Communication Platform Team (hybrid)

At IONOS, the leading European provider of cloud infrastructure, cloud services and hosting services, you will work together with a wide range of teams. We are characterized by open structures, a friendly working culture and flat hierarchies with a strong team spirit. We firmly believe that work and fun are compatible, and offer you the right environment for this. Our constant growth means that we are always looking for new colleagues. Become part of IONOS and grow with us.

Main responsibilities:

Our Communication Platform ensures that millions of customers receive the right information at the right time every single day—whether by e-mail, SMS, letter, or push notification. From invoices and system messages to newsletters: our platform is a core component of communication across the entire IONOS Group.

Together with your team, you will bring this platform to all our brands and actively help build our new Marketing Hub—making it international, scalable, and reliable.

• You will develop robust backend services using Java with Spring Boot and play a key role in evolving the platform and rolling it out for new brands.
• You will collaborate closely with other development teams and bring new ideas to life with a pragmatic mindset.
• You will contribute to technical design and review processes, helping us keep the platform stable and performant with your experience.
• You have knowledge of frontend technologies like React to further develop our Marketing Hub.
• Optional: Do you have experience with PHP? Our communication editor is currently PHP-based. In parallel, we are working on new modules for our Marketing Hub using React.

We appreciate:

Are you excited about working on applications that are used internationally across the IONOS Group? We're offering the opportunity to help shape projects with a big impact on our communication strategy.

• You have solid experience in developing with Java and Spring Boot, and you’re comfortable working with APIs, distributed systems, and microservices.
• You thrive in a dynamic and open team environment, turning small ideas into meaningful features—always with the customer in mind.
• You write code that is clean, efficient, and reliable—but you’re also pragmatic when perfection isn’t possible.
• You embrace agile methodologies and enjoy collaborating with others. Communicating in English and optionally German is something you’re comfortable with.
• You’re able to understand different requirements and develop effective solutions. You work efficiently and take responsibility for your results.
• You're someone who’s interested in data and keen to measure the success of your implementations shortly after deployment.

What we offer:

• Access to local/international trainings, development and growth opportunities, including access to e-learning platforms, covering both technical and soft skills areas;
• Modern technologies, product responsibility;
• Flexible work schedule;
• Hybrid work option;
• Medical services package from one of two private providers;
• 25 vacation days per year;
• Substitute days off for public holidays that occur on the weekend;
• Meal tickets;
• Internal referral program;
• Employee anniversary program;
• Team events, networking events organized to promote a passionate, creative and diverse culture;
• Summerfest and Winterfest parties;
• Of course, coffee, soft drinks and fresh fruits are on us in the office.

About the company:

As part of United Internet Group, with more than 10,500 employees and 27 million fee-based customer contracts, we are Europe’s leading internet specialist and largest hoster. Building the roof for strong brands such as 1&1, IONOS, STRATO, GMX, WEB DE, MAIL COM, 1&1 Versatel and the Drillisch Online brands, United Internet offers a broad portfolio of Internet access products and cloud applications.

Present in Romania since 2003, we are an Engineering Centre that lives and breathes technology.

Our engineering culture is shaped by the use of cloud native technologies, microservices combined with a DevOps attitude and an innovative mindset. We have a customer centric culture where every colleague is a contributor to our products’ design and success working closely with teams in Bucharest and abroad. Our strength lies in our team spirit and a positive and respectful interaction. In Romania, we have passionate teams sustaining the business segments of Access/Telecommunication, Mail & Media and Hosting, working and enjoying the 1&1 culture together.

Diversity enriches:

Different cultures, nationalities, genders, age groups, sexual orientations, and religions as well as people with disabilities - we encourage diversity. 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.

About IONOS Romania

Our Engineering Center lives and breathes technology since 2003. We proudly Plan, Build and Run the products and services we are responsible for.

Our engineering culture is shaped by the use of cloud native technologies, microservices combined with a DevOps attitude and an innovative mindset. We have a customer centric culture where every colleague is a contributor to our products’ design and success working closely with teams in Bucharest and abroad. Our strength lies in our team spirit and a positive and respectful interaction.

We value diversity and welcome all applications - regardless of, for example, gender, nationality, ethnic or social origin, religion, disability, age as well as sexual orientation and identity, physical characteristics, marital status or any other irrelevant factor subject to applicable law.