WHY EMNIFY?

With a predicted 25 billion connected IoT endpoints by 2025, the commercial and technological opportunities presented by the IoT are endless. Not to mention the career paths this exciting space has created. emnify stands out by delivering the next generation of connectivity technology to IoT solution providers worldwide – either directly or via strategic partnerships with CSPs. The most exciting thing about working at emnify is that we are just at the beginning of our journey. We are constantly developing our culture, people and our business approach further. Our guiding principles are driving transformation, customer centricity and empowering people. If you share our vision to unlock the potential of connectivity in a people focused culture that gives you the chance for impact, growth and to be successful together, we would be happy to join us.
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.

• 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).
• 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.

• 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).
• 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