Senior eSIM Engineer—Drive 5G SA Profiles & OTA Campaigns

Pauwels Consulting; Antwerpen; On-site; EUR 70,000 - 110,000; Full time

Job summary

Pauwels Consulting is seeking a Senior (e)SIM Engineer to own and drive SIM/eSIM design, OTA campaigns, and platform migrations within a dedicated service activation team. You will collaborate with external vendors to deliver 5G SA SIM cards and eSIMs and lead validation and troubleshooting across deployments.

The role requires deep hands-on experience with SIM-OTA platforms, APDU commands, and 3GPP/ETSI standards, plus fluent English and autonomous project ownership.

Qualifications

• 5+ years designing SIM and eSIM profiles, including 5G SA and eSIM (SM-DP+).
• 5+ years hands-on experience with SIM-OTA platforms and campaigns.
• Technical expertise in SGP.22, SGP.32, APDU commands, IoT.
• Knowledge of 3GPP TS 31.102 and ETSI TS 102 221 standards for profile troubleshooting.
• Autonomous and capable of owning projects from start to finish.
• Fluent in English.

Responsibilities

• Design and develop SIM and eSIM profiles in collaboration with external vendors.
• Define and create 5G Stand Alone SIM cards and eSIMs for various partners.
• Manage SIM-OTA campaigns by executing, troubleshooting, and reporting on remote changes.
• Lead the migration to a new SIM-OTA platform, including configuration and acceptance testing.
• Perform technical troubleshooting and analysis of electrical SIM profiles.
• Conduct validation testing for new SIM cards to ensure functionality and performance.

Skills

SIM/eSIM design

5G SA & eSIM

SIM-OTA platforms

APDU commands

IoT technology

3GPP TS 31.102

ETSI TS 102 221

English fluency

Job description

Pauwels Consulting is seeking a Senior (e)SIM Engineer to own and drive SIM/eSIM design, OTA campaigns, and platform migrations within a dedicated service activation team. You will collaborate with external vendors to deliver 5G SA SIM cards and eSIMs and lead validation and troubleshooting across deployments.

The role requires deep hands-on experience with SIM-OTA platforms, APDU commands, and 3GPP/ETSI standards, plus fluent English and autonomous project ownership.