Staff Backend Engineer (SIM) (m/f/d)

Emnify

Germany and Poland (Berlin, Germany, Poland) Remote permanent

Posted: February 5, 2026

Job Description

Your Role

Awarded 2022’s Best Connectivity Solution, emnify does more than link the world's most cutting-edge devices. It is a place where curiosity is rewarded, collaboration is abundant, and encouraging others is a way of life.

We are looking for an experienced Staff Backend Software Engineer to support all of our SIM related initiatives starting with automation of our SIM ordering, provisioning and verification process till active SIM-lifecycle-management for UICC and eUICC in the field. You will also participate in our future SIM strategy working on new standards and product offerings.

The position can be based in Germany or Poland.

Your Impact:

• Collaborate within a cross-functional team to architect, build, test, deploy and run cloud-based telco applications for global IoT connectivity.

• Apply your development expertise in Python, TypeScript, Java for our SIM management software running on AWS.

• Design and implement services, enhancing our offerings with value-added features for our customers.

• Leverage metrics data to prioritize tasks with the highest impact on engineering outcomes.

• Ensure reliable network connectivity for IoT devices, troubleshooting and resolving issues promptly.

• Share your domain and technical knowledge with the team and rely on their existing expertise to grow.

Your Skills:

• Technical Competency: Proficiency in building distributed network services applications using scripting languages (TypeScript, Python) and OoO languages (Java). Experience in designing cloud-based applications using AWS, Terraform, MySQL/Postgres. Full-stack and frontend dev experience is a plus.

• Domain Proficiency: Experience with or readiness to learn about telecommunications knowledge, specifically SIM (Subscriber Identity Module Card).

• Problem-solving: Expertise in unit testing and CI/CD practices.

• Effective Communication: Ability to clearly share knowledge within and across teams, fostering a collaborative environment. Comfortable working with remote teams.

• Adaptability: Ability to troubleshoot and resolve issues quickly, ensuring reliable network services. Experienced with working in an agile environment.

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.

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