Senior SIM Expert (all)

1NCE

Responsibilities

Ensure correct parametrization of SIMs in compliance with GSMA and 3GPP specifications to guarantee seamless interaction between SIM, device, and network.
Oversee the entire SIM lifecycle process, from requirement engineering through to operational management.
Act as the primary interface to SIM and OTA vendors, standardizing SIM-related procedures across all partners.
Create and maintain clear documentation of technical processes to ensure consistency and transparency.
Contribute to development projects that are connected to or reliant on SIM/OTA functionalities.
Manage SIM customization, ongoing maintenance, and reprogramming to support operational needs.

Completed studies in Electrical Engineering, Technical Computer Science, or a related field of education.
Strong administrative and IT abilities with a solid background in the telecom industry.
Able to perform basic checks on an HLR for SIM card provisioning.

Proficient in working with multi-IMSI applications and creating or updating related procedures.
Experienced in maintaining OTA systems (preferred, though training can be provided if needed).

Handle handset interaction tracing, AuC security policy, and OTA-related processes.
Your skills

Approximately 5 years of experience in a similar role, such as Engineering or Roaming.

Skilled in SIM card troubleshooting, including the ability to perform SIM, Wireshark, and network traces, provision SIMs, and change IMSIs.

Experienced in eSIM Remote SIM provisioning following GSMA SGP 01/02 standards.

Capable of liaising effectively with SIM vendors in collaboration with managers.

Self-starter mentality, proactive, and confident in taking initiative.

Strong team player with a customer-focused mindset and a confident, competent professional appearance.
Your gains

Further professional development - Become part of our international team and an exciting environment that will revolutionise the telecommunications market for IoT
An exciting environment that will revolutionise the mobile market for IoT with simplicity
Varied, agile work in a young company with an international team where fun is not neglected
Short decision-making paths and plenty of room for manoeuvre - with us, you can really get involved and help shape the future
Trust-based working hours, laptop, mobile phone and the option to work remotely
Modern office in a central location with drinks, fruit, office snacks, subsidised Urban Sports Club membership and excellent public transport connections