Senior Engineer - Telecom Billing

About Skylo Skylo is a global Non-Terrestrial Network service provider based in Mountain View, CA, offering a service that allows smartphone and IoT cellular devices to connect directly over existing satellites. Skylo’s direct-to-device service is now live on millions of activated devices across five continents, with more than 60 million square kilometers of coverage, in partnership with multiple satellite operators, mobile network operators (MNOs), Tier-1 chipset makers, and OEMs. Devices connected over satellite are managed and served by Skylo's commercial NTN vRAN, featuring a 3GPP standards-based cloud-native base station and core. Skylo provides anywhere, anytime connectivity solution that seamlessly roams between terrestrial and satellite networks. Our focus is on enabling connected services for people outdoors and connected workflows across three main verticals: mass-market consumer devices, automotive, and industrial IoT. This role is located at Bangalore,India where we are onsite at least 3 days a week in the office. Summary Of How You Will Impact Skylo We are looking for an experienced Senior Engineer - Telecom Billing to design, implement, and optimize our billing systems that support telecom services. You will play a key role in developing and maintaining platforms that manage mediation, rating, charging, invoicing, and revenue assurance. This role requires both strong software engineering skills and deep domain knowledge of telecom billing and OSS/BSS systems. How You Will Contribute Billing Charging Systems Design, develop, and maintain billing solutions for prepaid, postpaid, and hybrid telecom products. Implement and optimize rating and charging logic (voice, SMS, data, roaming, value-added services).Work with mediation systems to ensure accurate collection and processing of Call Detail Records (CDRs) and Event Detail Records (EDRs). Support real-time charging systems (OCS/CCS) and integrations with CRM and provisioning systems Revenue Assurance Compliance Ensure billing accuracy, reconciliation, and prevention of revenue leakage. Collaborate with finance and audit teams for regulatory and compliance requirements (e.g., TRAI, FCC, GDPR). Implement controls for taxation, roaming settlements, and interconnect billing. System Integration Performance Integrate billing platforms with ERP, CRM, and payment gateways. Optimize performance for large-scale, high-volume transaction environments. Build APIs and services to support product launches and customer self-service portals. Implement monitoring and automation for billing workflows and financial reporting. Collaboration Leadership Work closely with product and business teams to support new pricing models, bundles, and promotions. Mentor junior engineers and contribute to best practices in telecom billing engineering. Participate in architectural discussions and roadmap planning for billing modernization. What We Look For 5–8 years of software engineering experience, with at least 3+ years in telecom billing systems. Hands-on experience with OSS/BSS stacks (Amdocs, CSG, NetCracker, Ericsson BSCS, Oracle BRM, or equivalent). Strong understanding of CDR/EDR processing, mediation, rating, and charging systems. Solid programming skills in Java, C++, Go, or Python for backend systems. Experience with relational databases (Oracle, Postgres, MySQL) and data modeling for billing. Familiarity with microservices, APIs, and event-driven architectures. Knowledge of compliance and regulatory standards relevant to telecom billing. Nice To Have Experience with cloud-native telecom billing solutions (AWS, GCP, Azure). Knowledge of 5G core network charging (CHF, PCF). Exposure to usage-based billing at scale for IoT/M2M services. Certifications in telecom OSS/BSS or cloud billing. What We Offer With employees working across three continents, Skylo is proud to be an equal opportunity employer dedicated to building an inclusive and diverse workforc ... (truncated, view full listing at source)