Senior Mobile Core Architect

2 weeks ago

Montreal, Canada OXIO Full time

OXIO is the world’s first telecom-as-a-service (TaaS) platform. We are democratizing telecom and making it easily accessible for brands and enterprises to fully own and operate proprietary mobile networks designed to support their own customers needs. Our TaaS solution combines multiple existing networks into one single platform that can be seamlessly managed in the cloud as a modern SaaS offering. And it gets better - with full network access comes unparalleled business intelligence and insights to help enterprises better understand customer and machine (M2M) behavior. With a continuous focus on innovation, any company can build a powerful telecom presence with OXIO, and in addition help them glean unique customer insights like never before.

OXIO is looking to hire a Senior Mobile Core Architect to grow one of the most exciting software focused telecom stacks in the world. This is a unique opportunity that will give selected candidate(s) special access inside a full cellular telecommunications network covering voice, data and SMS services for customers in Mexico, in addition to all the core elements that sit behind the scenes.

As part of the Engineering Telecom Group and reporting to the Head of Telecom, your primary responsibility will be the design, deployment, configuration and maintenance of 2G/3G/4G/5G core network elements, such as STP/DRA, IWF, HLR, HSS, MME, PGW, SGW, IWF, OCS, PCRF, etc. You will also learn and be exposed to the API and HTTP side of our product (called BrandVNO) as well as our Business Intelligence product (BrandIQ) which marries our modern telecom stack with an amazing user experience for packing mobility services into our customers’ core product simply by using our API’s.

You will also be responsible for handling incidents affecting the service we provide to our customers, as well as identifying related problems resolution, down to problem correction. You will be expected to be autonomous and self-driven in order to proactively fulfill your responsibilities. You will work collaboratively with other teams across the globe, with standardized communication being spoken in English.

As a critical person within our network deployments, you will be also be responsible for keeping consistent communications with our MNOs, driving the requirements, status meetings, and the day to day of our relationships.

Key Responsibilities:
  • Configuration of STPs, DRAs, HLR/HSS, SMSC, SGSN, GGSN/PGW, SBC, etc
  • Along with the team, you will be responsible for being able to manage all equipment on our network
  • Using dashboards (and building new ones) to clearly and quickly discover issues and patterns
  • Accountable and responsible to follow the communications procedures in place when handling an incident
  • Communication is both internal within our company and external to our third-party providers
  • Drive the implementation of telecom interconnection in relationship with our providers
  • Maintenance, troubleshooting, security audits, and emergency response
  • Wireshark tracing of critical infrastructure to debug issues
  • Occasional on-call requirements
Key Qualifications:
  • At least 10 years’ experience in the core network domain with a mobile networks
  • Holding a BSc degree in Telecommunication or Computer Science (post-graduate studies are a bonus)
  • 10+ years core telecommunications network experience
  • 10+ years of experience with SS7, Sigtran, Diameter, Packet Switched (GGSN/PGw, GTP, GRX, IPX, etc.)
  • Circuit switched communications protocols such as SS7 (including SCCP, TCAP, MAP and CAMEL phases 1 to 4), SCTP (SIGTRAN), Diameter, including ability to design and configure voice and messaging flowsVoice SIP / RTP, ISUP and voice convergence technologies, including IMS (including VoLTE and VoWiFi)Knowledge (general) in Voice Mail, IVR and PBX systems / softphones (secondary)
  • Hands on with sniffers, Wireshark and testing tools in advanced mode
  • Hands on with Linux/Unix based systems (you can find your way around a linux shell)
  • Understanding of 3GPP, ITU-T and ANSI standards- Understanding of roaming agreements andIR.21, including IREG testing
  • Online Charging System (OCS) and CAMEL in billing and call control
  • Strong writing and documentation skills are needed to develop reports
  • Adaptability and responding to change
  • Be able to work under pressure
  • You are fluent in English (written and spoken)
  • Ready to work on morning/afternoon shifts
  • Good interaction with external customers and internal teams
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