I work across the disciplines moving mobile telecoms today — Network APIs and operator enablement, SS7 and Diameter signalling, roaming, A2P messaging and RCS, and cellular IoT — each its own market, all of them hands-on from requirements to cutover. Remote, worldwide.
Small and specialized means direct engagement, real ownership, and a scope of services usually reserved for far larger firms — at a fraction of the cost.
Help operators expose and monetize network capabilities through GSMA Open Gateway and CAMARA — the exposure layer, aggregation, developer onboarding, and the signalling mapping that makes it actually work.
Test a hypothesis, unblock an operational problem, or plan a move into APIs, signalling or IoT. Hourly for quick calls, project-based when you need a dedicated resource.
Turn business requirements into a technical design that actually scales — on-prem, cloud or hybrid — and keep delivery on spec, including managing Scrum resources.
Plan and run platform migrations end to end: scoping, install, cutover, testing, monitoring — and the documentation nobody else remembers to write.
Protocol converters, traffic parsers, plugins, national and international interconnect setup (TDM/IP), and systems testing against the specification.
Network APIs, signalling and cellular-IoT fundamentals for sales, product, procurement and engineering teams. Remote or on-site, small to mid-sized groups.
A sample of engagements. Clients confidential — the problems, and the stacks, are real.
Designed and led development of an SS7/signalling firewall: passive and active traffic handling across all layers, configurable trigger/action logic, and HA-grade reliability — with per-operator integration and product documentation.
Built a communications platform from business requirements, presented it to the board, then migrated customers off the legacy system — each scheduled and configured individually for connectivity, VPN, testing and monitoring.
Lifted delivery efficiency and removed single points of failure through redundancy. Set up national MNO interconnects and international signalling, debugged chronic platform issues, and documented every function with sequence diagrams.
Analyzed strict per-component RFP criteria and produced a detailed response mapping the vendor's product capabilities — plus specific configuration and architecture changes to meet the issuer's requirements.
I've spent 15+ years in mobile telecoms — starting in the aggregator days learning messaging and the SS7 underneath, then moving into core signalling, roaming and network connectivity, signalling VAS, anti-fraud and signalling security, and cellular IoT.
A growing part of my focus is where the industry is heading — helping operators open their networks to developers through Network APIs (GSMA Open Gateway and CAMARA). Signalling, roaming and cellular IoT stay just as central, each its own market rather than a footnote to the APIs.
That experience was built at industry leaders like TeleSign and BICS, and independently through Duke Mobile International, working directly with vendors and operators worldwide. I still like taking systems apart to understand exactly how they work.
Bring a real problem — Network APIs, signalling, IoT or architecture — and let's see if I can help.
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