Staff Software Engineer (f/m/d) Virtual Network Functions

WebHosting; Berlin; Hybrid; EUR 90,000 - 130,000; Full time

Job summary

IONOS Cloud invites a Staff Software Engineer to join the VNF Development team. You will design, implement and maintain Virtual Network Functions using Golang on Kubernetes. You will collaborate across teams to deliver scalable, reliable VNFs and leverage AI-assisted tooling in daily work.

The role covers architecture, implementation, deployment and day-to-day operations of VNFs, enabling external customers and internal teams with high-performance networking capabilities.

Qualifications

• Highly motivated and experienced software engineer.
• Experience with Golang and Kubernetes is preferred.
• Willingness to work across the full VNF lifecycle.

Responsibilities

• Develop and support IONOS Cloud VNF offerings using diverse technologies.
• Design new features and adopt technologies on VNF infrastructure.
• Write, test and review Golang services for VNFs with AI-assisted tooling.
• Deploy, operate and troubleshoot VNF workloads on Kubernetes including cluster operations and monitoring.
• Collaborate with other teams to ensure smooth integration of VNFs with other IONOS products.

Skills

Golang

Kubernetes

AI tooling

Tools

Kubernetes

Job description

Staff Software Engineer (f/m/d) Virtual Network Functions

Job Description

About IONOS

At IONOS, we don’t just manage servers – we shape the digital future for more than 6.2 million customers worldwide with our solutions. As Europe’s leading hosting provider and a pioneer in independent cloud solutions, we are building next-generation infrastructure – from sovereign cloud architectures and high-performance GPU clusters to integrated AI automation tools.

What drives us is digital sovereignty for Europe and real impact for small and medium-sized businesses (SMBs) as well as large enterprises. We work in agile teams, rely on transparent structures, and believe that excellence and innovation only emerge through true team spirit.

Ready for your next step? Become part of IONOS and grow with us.

The IONOS Cloud VNF Development team is seeking a highly motivated and experienced software engineer.

The VNF Development team designs, develops and maintains the Virtual Network Functions (VNF) behind IONOS Cloud’s network offerings. These products serve both our external customers and other internal IONOS teams. We build our VNFs in Golang and run them on Kubernetes, so the team works across the whole lifecycle: architecture, implementation, deployment and day-to-day operations. As part of the team, you’ll play a crucial role in shaping and running these products.

We are looking for someone to join our team and work with us on providing the best VNF products possible.

Tasks

• Developing and supporting our multiple modern, scalable and high-performance Virtual Network Functions (VNF) offerings of IONOS Cloud using a range of diverse technologies.
• Designing new features and adopting new technologies (both hardware and “software defined”) on different components of the VNF infrastructure.
• Writing, testing and reviewing Golang services for our VNFs, using AI-assisted tooling as part of your daily development workflow.
• Deploying, operating and troubleshooting VNF workloads on Kubernetes, including cluster operations, upgrades, monitoring and debugging network issues in production.
• Cooperating with other teams to ensure the smooth integration of new Virtual Network Functions with different IONOS products.

Application Note

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.