Java Software Developer (f/m/d) - Communication Platform

at subsidary IONOS SE in Karlsruhe
Full-time | Permanent | Professionals
Reference ID: I-830

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About us

IONOS is the leading European digitalization partner for small and medium-sized businesses (SMB). The company serves around six million customers and operates across 18 markets in Europe and North America, with its services being accessible worldwide. With its Web Presence & Productivity portfolio, IONOS acts as a 'one-stop shop' for all digitalization needs: from domains and web hosting to classic website builders and do-it-yourself solutions, from e-commerce to online marketing tools. In addition, the company offers Cloud Solutions to enterprises who are looking to move to the cloud as their businesses evolve.   

Tasks

Our Communication Platform ensures that millions of customers receive the right information at the right time every single day – whether by email, 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 roll out this platform across all our brands – internationally, scalable, and reliably.

• 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.
• Optional: Interested in frontend topics? Our communication editor is currently PHP-based. In parallel, we’re developing new modules around our Marketing Hub that leverage modern frontend technologies like React.

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.

Qualifications

• 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.
• Front-end knowledge (JavaScript or React) is a big plus, but not a requirement.

Benefits

• Hybrid working model with home office option.
• Flexible working hours through trust-based working hours.
• At some locations a subsidized canteen and various free drinks.
• Modern office space with very good transport connections.
• Various employee discounts for activities and products.
• Employee events such as summer and winter parties, as well as workshops.
• Numerous training and development opportunities.
• Various health offers, such as sports and health courses.

apply online now