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The Staff Backend Engineer will lead the development of OXIO's telecom platform, focusing on backend systems, architecture, and scalable solutions. They will utilize multiple languages and cloud services while collaborating with stakeholders to innovate telecom apps.

Lead end-to-end (e)SIM and Remote SIM Provisioning engineering: own SIM profiles, vendor management, OTA platforms, applet development, testing, documentation, and standardization across countries and carriers.

Lead design, implementation, operation, and optimization of virtualized and cloud-native telecom network functions (packet core, IMS, charging/policy). Deploy and operate infrastructure across AWS/Azure/OpenShift/VMware, automate workflows and IaC, troubleshoot production issues, collaborate with vendors and internal teams, and maintain FCAPS and documentation for service reliability.

Design, build, and scale reliable batch and real-time data pipelines and warehouses. Partner with engineering, data science, and business teams to define data models, improve observability, optimize storage and querying, and evangelize data engineering best practices across the company.

The Junior Mobile Core Support Engineer will troubleshoot and resolve telecom network issues, support customer queries, and maintain network performance while collaborating with engineering teams.

Support finance operations including AP/AR, prepare and audit monthly customer invoices in Xero and Facturama, process vendor bills, perform account reconciliations and aging analyses, produce ad-hoc reports, coordinate vendor onboarding, respond finance inquiries, and document and improve AP/AR processes.

Drive product discovery, strategy, and roadmap for OXIO's telecom-as-a-service platform. Define requirements, user stories, acceptance criteria, and success metrics; lead cross-functional execution with Engineering, Design, Operations, Sales, and Marketing; use customer research, data analysis, and AI tools to build B2B products like BrandVNO, eSIM onboarding, APIs, billing, and analytics; own launches, measure outcomes, and iterate.

Lead pre-sales technical discovery, solution design, and proposal development for telecom/MVNO customers. Present demos, qualify inbound leads, drive deals from discovery to contract, and collaborate with marketing, product, and engineering to tailor solutions and ensure customer success.

The Full Stack Engineer will develop the BrandVNO platform, enhancing customer SDKs and ensuring high-quality telecom experiences across mobile apps.

As a Site Reliability Engineer, you will design cloud platforms, automate operations, maintain infrastructure, and support engineering teams in delivering reliable services.