Go & Java Developer for Development Team Atlas at IONOS (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.

About us:

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.

We strive to deliver quality above anything else. 

About the project:

Help us build the future of web hosting while mastering the complexity of the present. We orchestrate the full spectrum of hosting services starting from provisioning, integration, customer interaction - across both legacy and next-gen platforms.
The challenge? Contribute to our future vision while learning from battle-tested systems as we migrate our entire shared hosting customer base to a modern platform, without missing a beat.
The opportunity? Shape the architecture that powers it all.

What you'll get in:

• AI-powered development: Leverage Gemini, Copilot, and Claude Code for rapid prototyping, code analysis, and test-driven development then apply your expertise through rigorous code reviews;


• Modern technology stack: Java 17/21, Go, Docker, Kubernetes, and cloud-native architecture - build with the tools that matter;


• Agile engineering culture: Scrum practices, continuous integration, and fast iteration cycles;


• Collaborative environment: Friendly, open team culture where ideas flow freely.

What you'll do:

We are looking for a backend developer with GO / Java to develop our web hosting platform.

You will:

• Own features end-to-end: Understand product flows deeply, build new capabilities, and evolve existing ones;


• Ensure reliability: Troubleshoot and resolve issues across all environments - QA, pre-production, and live systems;


• Architect for scale: Design and develop high-performance, distributed microservices that handle real-world traffic;


• Embrace DevOps: Set up and maintain CI/CD pipelines from testing to production (DevOps mindset is a strong plus);


• Drive technical solutions: Create technical concepts and work closely with Product Owners and Architects to align technology with product vision;


• Work autonomously: Take ownership of your work with minimal supervision when needed;


• Share the full lifecycle: Participate in development, maintenance, and platform improvements - not just feature delivery;


• Collaborate globally: Join an international community of software developers and AI enthusiasts pushing boundaries together.

We appreciate:

• 4+ years experience developing object oriented software using Java / Go;


• 2+ more years experience working on REST services/servers;


• Working experience with Spring Framework (Core, WebFlux, Boot, Cloud);


• Problem solving and analytical skills;


• Experience with Maven and CI/CD;


• Microservice oriented architecture, performance and scalability concerns;


• Experience with unit testing;


• Advanced operation of version control / git;


• Basics of Linux.

Would be a plus:

• Experience with OpenShift or Kubernetes;


• Working experience with Docker;


• Experience in designing and developing Event Driven systems;


• DevOps experience.

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;


• 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 IONOS

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. 

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.