SIM/eUICC Expert / Solution Engineer (m/f/d)

Remote from: Germany
Annual salary: Undisclosed
Salary information is not provided for this position. Check our Salary Directory to estimate the average compensation for similar roles.
Department: Software Engineering
Employment type: Full Time,
Job posted: 19 Jun 2025
Apply before: 19 Jul 2025
Experience level: Senior
Views / Applies: 12345 / 123

Your Role

We are looking for an experienced and hands-on SIM/eUICC Expert / Solution Engineer to support the implementation, testing, and go-to-market of new eSIM products for both Consumer and IoT use cases, in alignment with GSMA SGP.22 and SGP.32 standards.

This is a freelance role (daily/hourly contract) with a minimum duration of 6 months and the possibility to work remotely, but with regular travel when required.

Your Impact

Design and test the new fully compliant SGP.32 IoT eUICC product (multi-form factor, multi-grade).
Design and test new Consumer and IoT eSIM profiles products, relying on emnify eIM and SMDP+ platforms (SGP.22 and SGP.32).
Coordinate with SIM vendors to define technical specifications, provisioning requirements, and delivery schedules.
Support development and testing of a Multi-IMSI STK Java Card Applet for eSIM and eUICC and ensure full interoperability across different vendor platforms.
Drive the acceptance testing and production rollout of the eSIM and SIM products.
Design, maintain and execute test suites (live and scripted command-based) for SIM/eSIM functionality, device compatibility and OTA behaviors.
Troubleshoot complex SIM/device/network issues and provide technical root cause analysis and fixes.
Participate in project tracking, documentation and milestone delivery from development through go-to-market.
Produce technical and commercial collaterals to support internal stakeholders and external customers (e.g. Product briefs, API docs, support materials, pricing sheets, internal announcements).

Your Skills

Proven experience in SIM/eSIM product engineering, testing, or technical consulting.
Strong expertise with SGP.02, SGP.22, SGP.32, SIM file structure design, OTA operations (HTTP, SMS), and GSMA testing standards.
Hands-on experience with SIM vendors and mobile operators worldwide.
Familiarity with mobile core elements (HLR/HSS/AUC) and connectivity management platforms.
Experience designing OTA campaigns and working with SMDP/SMDP+/SMSR/eIM platforms and APIs.
Ability to debug and analyze SIM/device/network issues using industry tools.
Fluent in English; excellent communication and documentation skills.
Self-motivated and capable of managing technical deliverables and priorities independently.

Apply now >