Senior eSIM/UICC Engineer: Interop & Certification

United States Digital Space LLC; United States; Remote; USD 120,000 - 160,000; Full time

Job summary

United States Digital Space LLC seeks an experienced UICC/eUICC/eSIM specialist to own the engineering, interoperability, and certification readiness of our Consumer eSIM (SGP.22) and IoT eUICC (SGP.32) products.

You will manage profile design, validation, and production readiness, ensuring high-quality, interoperable solutions across devices and networks. This role demands hands-on expertise and collaboration with internal teams and external vendors.

Qualifications

• Hands-on SIM/eSIM/eUICC engineering and validation experience.
• Familiarity with GSMA certification artefacts (SAIP, BAP) and related standards.
• Understanding OTA provisioning workflows and lifecycle management.
• Ability to coordinate cross-functional teams across hardware, software and networks.
• Strong debugging skills across SIM, device and network layers.

Responsibilities

• Own end-to-end engineering and validation of SGP.22 and SGP.32 eSIM products.
• Define and execute certification and validation strategies using GSMA artefacts.
• Investigate and resolve cross-domain issues (SIM, device, network) and coordinate fixes.
• Serve as technical point of contact for remote provisioning platforms and vendors.
• Produce clear technical documentation to enable Product, Support and Customer teams.

Skills

SIM/eSIM/eUICC engineering

GSMA standards SGP.22/SGP.32

UICC/eUICC architecture

OTA provisioning processes

Certification & validation strategies

Tools

SAIP

BAP

Job description

United States Digital Space LLC seeks an experienced UICC/eUICC/eSIM specialist to own the engineering, interoperability, and certification readiness of our Consumer eSIM (SGP.22) and IoT eUICC (SGP.32) products.

You will manage profile design, validation, and production readiness, ensuring high-quality, interoperable solutions across devices and networks. This role demands hands-on expertise and collaboration with internal teams and external vendors.