{"id":2292978,"url":"https://alion.io/job/proximus-sim-esim-connectivity-engineer","title":"SIM & eSIM Connectivity Engineer","company":{"id":54371,"name":"Proximus","domain":"proximus.com","url":"https://alion.io/company/proximus","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Phenom","truth_index":{"grade":"B","score":80,"open_postings":7,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":17,"computed_at":"2026-10-13T05:45:00Z"}},"role":"Industrial Engineering","role_family":"Industrial Engineering","seniority":"middle","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Brussels, Belgium"],"countries":["BE"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":54000,"max_usd":121000,"period":"year","method":"global_role_cell_scaled_by_country","sample_n":4414},"experience_years_min":3,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"SFT","optional":false},{"name":"AWS","optional":true},{"name":"Azure","optional":true},{"name":"Java","optional":true},{"name":"Kubernetes","optional":true}],"status":"live","first_seen_at":"2026-10-05T00:00:00Z","employer_posted_date":"2026-10-05","last_verified_at":"2026-10-13T11:22:07Z","board_verified":true,"closed_at":null,"days_open":8,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":8},"description":"Proximus Global\n\nProximus Global, combining the strengths of Telesign, BICS, and Route Mobile, is shaping the future of communications and digital identity.\nOur mission is simple : to enable seamless global connectivity and trusted engagements that power the world's interactions.\nTogether, our solutions fuel innovation across the world's largest companies and emerging brands. With a truly global reach, we enable businesses to create engaging customer experiences while integrating fraud protection across the entire lifecycle.\nOur portfolio covers global voice, messaging and data connectivity, alongside 5G and IoT solutions. It also includes digital identity, verification and CPaaS platforms for personalised, omnichannel engagement. Through these capabilities, we help businesses and communities stay connected, secure and ready to grow. Today, we reach more than 5 billion subscribers, secure over 180 billion transactions every year, and connect more than 1,000 destinations worldwide - delivering on our commitment to connect, protect and engage everywhere.\nThis role is based in Brussels and offered on a permanent contract. We follow a hybrid working model, with an expectation to be present in the Brussels office 2 to 3 days per week. Applicants must have the legal right to work in Belgium.\nAbout the role\nAt Proximus Global, we're looking for a SIM & eSIM Connectivity Engineer to join our SIM for Things (SFT) team.\nIn this role, you will contribute to the design, implementation, and support of our SIM and eSIM ecosystem, covering physical SIMs, eUICCs, eSIM Hub platforms, SM-DP+, and Remote SIM Provisioning solutions. Working closely with product, operations, technology teams, vendors, and partners, you will help deliver reliable connectivity solutions for global IoT deployments.\nYou will be involved throughout the SIM and eSIM lifecycle, from solution design and device validation to provisioning, troubleshooting, and operational support, helping ensure a seamless experience for customers and partners.\nWhat you'll do\nSupport the design and implementation of SIM, eSIM, and Remote SIM Provisioning solutions in line with business and operational requirements.\nContribute to the evolution and continuous improvement of SIM for Things, eSIM Hub, and provisioning platforms.\nParticipate in implementation projects involving SIM vendors, profile providers, and ecosystem partners.Perform technical analyses, solution assessments, and impact evaluations for new requirements and integrations.\n\nDraft and maintain technical documentation, integration specifications, and operational procedures.\nSupport the validation of SIM configurations, profiles, operating systems, and related technical components.\nHelp manage SIM and eSIM lifecycle activities, including provisioning, activation, suspension, replacement, and termination processes.\nCollaborate with operational teams on SIM inventory management, ordering processes, and vendor onboarding activities.\nExecute and coordinate device interoperability testing and end-to-end validation activities.\nVerify compatibility between devices, SIMs, eSIM profiles, connectivity platforms, and mobile networks.\nInvestigate and troubleshoot technical incidents involving devices, SIMs, eUICCs, profiles, and network integrations.\nSupport integrations with external partners, including eSIM and profile management platforms.\nProvide technical support to internal stakeholders, customers, and business teams.\nContribute to service monitoring, automation, operational excellence, and continuous improvement initiatives.\nWhat you bring\nExperience & technical expertise\nDegree in Telecommunications, Computer Science, Information Technology, or a related field.\n3-5 years of experience in telecom, IoT, mobile connectivity, or related technology environments.\nExperience working with SIM and/or eSIM technologies and mobile connectivity solutions.\nGood understanding of SIM lifecycle management, provisioning processes, and connectivity operations.\nFamiliarity with GSMA eSIM standards and industry best practices.\nExperience testing connected devices and troubleshooting connectivity-related issues.\nUnderstanding of mobile network concepts, roaming, and IoT connectivity environments.\nAbility to analyse technical requirements and work effectively with vendors and technology partners.\nExperience working in cross-functional environments involving product, operations, and engineering teams.\nNice to have\nKnowledge of eSIM platforms such as SM-DP+, SM-DP/SR, or Remote SIM Provisioning solutions.\nFamiliarity with SIM operating systems, applets, Java Card, or GlobalPlatform technologies.\nExposure to SIM profile management, personalisation, or file system structures (EFs/DFs).\nExperience working with SIM manufacturers such as IDEMIA, Thales, G+D, Kigen, Workz, or similar vendors.\nUnderstanding of LTE-M, NB-IoT, 5G IoT, MVNO, or MVNE environments.\nFamiliarity with cloud technologies, Kubernetes, AWS, or Azure.\nYour soft skills\nStrong communication skills and ability to explain technical concepts clearly.\nCollaborative mindset and ability to work effectively in an international environment.\nCustomer-oriented with a strong sense of ownership and accountability.\nAnalytical and structured approach to problem solving.\nWell-organised, proactive, and able to manage multiple priorities.\nEager to learn and continuously develop expertise in mobile connectivity technologies.\n\nKey highlights\nPowering more than 13 billion digital communications every month\nSupporting over 3,500 active customers through a presence in 50+ global offices across 100+ countries\nManaging 50% of global roaming data traffic and connecting 150 million IoT devices\nDriving innovation in 5G, private networks and IoT, reinforcing our position in next-generation communications\n\nWhy Proximus Global?\nGlobal & Inclusive\nWork with diverse teams across 100+ countries, in a truly international and connected environment.\nOwnership & Trust\nTake initiative, make decisions and own your impact with real autonomy.\nInnovation with Purpose\nContribute to meaningful solutions in global connectivity, combining technology, platforms and expertise across Proximus Global.\nGrowth Mindset\nContinuously learn, challenge the status quo, and grow across our global organisation.\n\nDiscover Proximus Global\nGet a flavour of Proximus Global activities by watching our video.\n\nWatch the 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