# Senior SIM Expert (all) - Riga at 1nce > Remote · Latvia · Senior · Other · open. Source: https://alderhq.app/jobs/personio%3A1nce%3A2395286 (read 2026-11-12). ## Facts (observed) - Company: [1nce](https://alderhq.app/companies/1nce) - Location text: Riga; Remote - Where it can be done from (inferred): Remote · Latvia (evidence: "Location: Riga; Remote") - Posted: 2025-10-20 (387 days ago) - First seen by alder: 2026-11-04 · last verified: 2026-11-10 - Reposted: 0 times · edited: 0 times - Apply on the employer's site: https://1nce.jobs.personio.de/job/2395286 ## Pay and sponsorship - Posted pay: not posted ## Description (the employer's text) ### We are 1NCE 1NCE is a pioneering company at the forefront of reshaping the IoT connectivity landscape. As a key player in the industry, we are on a mission to change the telecoms/IoT landscape. With a focus on innovation, customer satisfaction and industry leadership, 1NCE is ready to change the system. ### Your team Become an important part of 1NCE as Senior SIM Expert (all) and work directly with our entire technical team. We are looking for real “doers” with a positive drive and energy who complement our team in the best possible way and who enjoys mastering challenges and growing together with us. ### Your mission SIM/eSIM profile management: Ensure correct parametrization of SIMs in compliance with GSMA and 3GPP specifications to guarantee seamless interaction between SIM, device, and network. SIM lifecycle ownership: Oversee the entire SIM lifecycle process, from requirement engineering through to operational management. Vendor coordination: Act as the primary interface to SIM and OTA vendors, standardizing SIM-related procedures across all partners. Process documentation: Create and maintain clear documentation of technical processes to ensure consistency and transparency. Project participation: Contribute to development projects that are connected to or reliant on SIM/OTA functionalities. SIM customization and maintenance: Manage SIM customization, ongoing maintenance, and reprogramming to support operational needs. Additional responsibilities: Handle handset interaction tracing, AuC security policy, and OTA-related processes. ### Your skills Educational background: Completed studies in Electrical Engineering, Technical Computer Science, or a related field of education. Professional experience: Approximately 5 years of experience in a similar role, such as Engineering or Roaming. Technical and administrative skills: Strong administrative and IT abilities with a solid background in the telecom industry. SIM troubleshooting expertise: Skilled in SIM card troubleshooting, including the ability to perform SIM, Wireshark, and network traces, provision SIMs, and change IMSIs. eSIM provisioning knowledge: Experienced in eSIM Remote SIM provisioning following GSMA SGP 01/02 standards. Multi-IMSI familiarity: Proficient in working with multi-IMSI applications and creating or updating related procedures. Vendor coordination: Capable of liaising effectively with SIM vendors in collaboration with managers. OTA systems maintenance: Experienced in maintaining OTA systems (preferred, though training can be provided if needed). HLR knowledge: Able to perform basic checks on an HLR for SIM card provisioning. Work approach: Self-starter mentality, proactive, and confident in taking initiative. Team and customer orientation: Strong team player with a customer-focused mindset and a confident, competent professional appearance. ### Your gains - 26 Days of paid vacation per Year - 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 ### Your contact In case of any additional questions regarding the position: jobs@1nce.com --- Data: alder (https://alderhq.app). Cite https://alderhq.app/jobs/personio%3A1nce%3A2395286 and the date you read it. Observed facts come from the employer's own listing; location reach, level, family and skills are inferences.