Senior Mobile Network Engineer

?? We're Hiring: Mobile Network Engineer ? Bangalore, India GigSky is redefining global mobile connectivity. Our patented eSIM technology enables seamless, on-demand data access across borders?powering everything from IoT devices and wearables to vehicles and aircraft systems. We eliminate roaming fees and deliver local connectivity through a global platform. We?re seeking a technically strong Mobile Network Engineer to join our Bangalore team and lead the development, integration, and optimization of our core network and roaming infrastructure. This is a hands-on engineering role with high-impact visibility across product, vendor, and operator ecosystems. ??? Key Responsibilities Manage and optimize elements of our LTE/UMTS core network , including SGSN, GGSN, PGW, SGW, and HSS Lead IREG testing and ensure successful roaming connectivity with global operators Troubleshoot and resolve issues related to SS7 , Diameter , SMPP , and SIP signaling protocols Design and implement interconnects with signaling, messaging, and roaming partners worldwide Collaborate with vendors (e.g., Ericsson , Cisco ) to develop and deploy new network features and hardware/software components Define network requirements and test procedures for onboarding new operators and partners Act as a technical lead for RFPs, vendor evaluations, and network-side project management Work cross-functionally with product, sales, finance, and legal teams to align network capabilities with business goals ?? Required Skills & Experience 5?10 years of experience in mobile network engineering, preferably in roaming and international connectivity Strong understanding of LTE/UMTS architecture , including EPC and IMS components Hands-on experience with: IREG testing and roaming partner onboarding SS7 , Diameter , SMPP , SIP , and GTP-C/U protocols Network troubleshooting tools (e.g., Wireshark, NetAct, TEMS) eSIM technologies , SIM provisioning, and OTA platforms Familiarity with network security , QoS , and fault isolation Experience working with international mobile operators , MVNOs , and sponsored roaming models Ability to draft and review network specifications , technical RFPs , and vendor proposals Strong documentation and communication skills for cross-functional collaboration ?? Why Join GigSky? Work on cutting-edge global connectivity platforms Collaborate with top-tier vendors and international operators Competitive compensation and benefits Opportunity to lead technical innovation in mobile data ?? Location : Bangalore, India ?? Apply Now or connect with us to learn more!