Senior Backend Engineer (m/f/d)

TLDR

Design and develop APIs and real-time data processing applications using Apache Kafka, contributing to the scalability and reliability of telecommunications solutions.

 

Your Role

We are looking for a talented Backend Engineer with an interest in telecommunications and a passion for software development and big data technologies. You will be responsible for real-time processing of our data, enabling microservices and supporting the company to work in a fully data-driven environment. The position can be based in emnify’s office either in Berlin, or in Würzburg, or remote in Germany or Poland. 

Your Impact

  • Work within one of our service squad responsible for designing, building, testing, and running components or projects which drive the pricing & charging of emnify
  • Development of APIs and real-time data processing applications based on streaming technologies on the top of Apache Kafka ecosystem with a focus on scalability and reliability
  • Work with a team on core telecommunication functions like automated product lifecycle, in a modern cloud-based environment
  • Architecture and design of above-mentioned components to run on AWS in a scalable fashion
  • As a part of a team, you will be responsible for deploying and running these applications using CI/CD tooling like Jenkins, Terraform and monitoring solutions like Grafana, Prometheus etc

Your Skills

  • Experience of full-cycle engineering from POC to production with JVM based languages preferably Scala (large part of our code-base is in Scala). 
  • Demonstrable experience working with stream/data processing platforms like Kafka streams, Spark (Glue) and/or Flink.
  • You have designed at least one or more complex APIs and made major contributions into complex projects running in production.
  • Proven expertise in implementing and deploying solutions in cloud environments (with a preference for AWS), ideally using Infrastructure-as-a-code.
  • Experience working on relational databases.

Bonus Points

  • Interest in telecommunication, Internet of Things, network protocols and SDN
  • Happy to contribute to our components running on Node.js (Typescript).
  • Work experience in agile development teams
  • Having contributed to Open-Source projects (link to github/gitlab project)
  • Relevant AWS certification

About emnify

emnify is a global  IoT connectivity platform provider, enabling enterprises and OEMs to build, deploy, and operate connected products at scale across 180+ countries. Our cloud-native SuperNetwork powers mission-critical use cases in industries such as mobility, logistics, energy, and industrial IoT.
We are a Series-B scale-up with a strong growth trajectory and a clear focus on upmarket and enterprise customers. emnify’s technology and innovation have been recognized repeatedly by the industry, including:

  • eSIM Provider of the Year at the MVNOs World Awards 2025
  • Platinum Award for eSIM Management Platform Innovation by Juniper Research (2025)
  • IoT Innovator Award by Compass Intelligence for aviation connectivity
  • Deloitte Technology Fast 50 Germany, recognizing emnify as one of the country’s fastest-growing tech companies
As we move into the next phase of growth, AI plays a central role in our strategy—both in how we build our platform and in how our customers interact with it.

emnify delivers IoT connectivity solutions that facilitate scalable and compliant network access for businesses looking to optimize their operations. By leveraging B2B SaaS and advanced analytics, we empower our customers to turn complex challenges into actionable insights, enhancing their decision-making processes. Our focus on strong product-market fit and collaborative strategies sets us apart in the rapidly evolving tech landscape.

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