Staff Software Engineer – 5G Standalone Core

EMnify GmbH; Berlin; Hybrid; EUR 140.000 - 200.000; Vollzeit

Benefits dieser Stelle

Hybrid/remote work options

Dog-friendly offices

Time-off policy (30 days)

Learning & development opportunities

Zusammenfassung

emnify is seeking a Staff Engineer to own and advance the 5G Standalone core for our global IoT platform. You’ll design, build, test, and operate cloud-native network functions and roaming interfaces in a hands-on role, while guiding the technical direction across squads.

The Berlin-based hybrid position allows remote engagement from anywhere in Germany. You’ll work with C++, Go, or Java, deploy on AWS and Kubernetes, and focus on reliability, observability, and performance at scale.

Qualifikationen

• Deep hands-on expertise with 5G Standalone core protocols and service interfaces.
• Experience with cloud-native networking, service mesh, and observability for high-throughput systems.
• Hands-on software engineering across design, implementation, testing and troubleshooting.

Aufgaben

• Own core network functions and roaming scenarios end-to-end.
• Design, implement, test, and operate cloud-native 5G SA components on AWS and Kubernetes.
• Mentor engineers and set engineering standards across squads.
• Troubleshoot live telecom issues across the stack.

Kenntnisse

5G Standalone core

Cloud-native networking

C++, Go or Java

AWS

Kubernetes

Telecom production systems

Roaming protocols

AI-agentic workflows

Jobbeschreibung

Your Role

As part of the larger Engineering department, the Core Network team builds and operates the heart of emnify's SuperNetwork — the mobile core that keeps millions of IoT devices connected across 180+ countries. As we evolve our platform towards a cloud-native 5G Standalone (SA) core, we're looking for a hands-on 5G SA expert to help us design, build, and run it.

As a Staff engineer with deep 5G SA expertise, you'll take technical ownership of the core network functions and roaming scenarios that make global IoT connectivity work. You'll set the technical direction for our 5G SA core while staying hands-on — designing, implementing, testing, and troubleshooting the software components that run in production at scale. You'll partner closely with engineers across squads, share your expertise, and raise the bar for how we build cloud-native telecommunications software.

This is a hybrid position based in emnify's Berlin office. We are open to candidates located anywhere in Germany.

Your Impact

• You'll architect, design and build using AI-agentic workflows software components for emnify’s cloud native 5G Standalone core in C++, Go, or Java — implementing and operating network functions (NFs) and the service-based interfaces between them and integrating into the overall emnify platform OSS and BSS.
• You'll own 5G roaming scenarios end-to-end, designing and implementing the signaling and interworking that keep IoT devices connected as they move across networks and borders.
• You'll help deploy and operate the 5G core at scale on AWS and Kubernetes, building for high availability, observability, and performance across regions.
• You'll set technical direction and raise engineering standards across teams — mentoring engineers, reviewing designs, and driving decisions on protocols, network functions, and core architecture.
• You'll troubleshoot complex, live telecommunications issues across the stack, from core network protocols down to the running service.

What we expect

• Deep, hands-on expertise with the 5G Standalone core; core specifications and core signalling protocols (e.g. service-based interfaces over HTTP/2, Diameter, GTP-C/U), roaming scenarios, core network protocols, and network functions (NFs). Our focus is the mobile core network domain; hands-on experience with 5G RAN technologies is not a requirement for this role.
• Experience with cloud-native networking, service mesh, and observability for high-throughput distributed systems.
• Hands-on software engineering is essential. You can architect/design, implement, test, and troubleshoot software components using AI-agentic workflows.
• Strong software development experience in at least one of C++, Go, or Java combined with a results-oriented mindset and readiness to work across the technology stack when needed.
• Experience with large-scale infrastructure deployment and orchestration (AWS, Kubernetes).
• Proven experience running telecommunications services at scale in production.

Background in IoT/M2M connectivity or MVNO/MNO core network operations.

Why it might not be a fit

• You have primarily worked in 5G RAN, telecom architecture, consulting, or vendor management without hands-on experience building and operating 5G Standalone core network functions. This role requires software engineering skills in C++, Go, or Java, alongside practical experience with 5G core protocols.

Your career path with us

Team & structure

Our engineering team is made up of engineers primarily based in our Berlin and Würzburg offices. The team is organised into cross-functional squads aligned to product domains, bringing together backend, frontend, and infrastructure expertise.

Business impact

Engineering builds and scales the platform that powers global IoT connectivity. Their work enables customers across industries—from aviation and robotics to smart cities and beyond—to connect, manage, and scale their devices reliably, while driving emnify’s growth and product innovation.

What you’ll work on

You’ll tackle complex technical challenges across distributed systems, connectivity, and APIs—building scalable solutions and shipping features that have real-world impact at global scale.

Work flexibility

We're a globally distributed team, making flexibility essential. Our roles are designed as hybrid, remote, or include relocation opportunities.

Time to recharge

Enjoy a generous time-off policy starting at 30 days (location-based) to recharge and focus on what matters most.

Learning support

Ongoing professional development opportunities through access to courses, certifications, or conferences.

Good vibes

Join regular company events and team outings to connect with colleagues, celebrate, and have fun. Oh, and did we mention our dog-friendly offices?

When you apply for a role at emnify, we'll focus on your skills and what you can bring to the table, regardless of your nationality, ethnic or national origin, skin color, religion, disability, sex, sexual orientation, or gender identity. If you have a disability, chronic illness, or are neurodiverse, please let us know so we can provide the support you need throughout the application process.