How Oghenemaero Oteri turned Nigerian field experience into continental-scale innovation

In the telecommunications industry, the packet core is the part of the mobile network that almost nobody outside the field has ever heard of, and almost nobody inside the field can afford to ignore. It is the engine room: the layer that authenticates every subscriber, routes every data session, enforces every policy, and determines whether a call connects within 200 milliseconds or drops entirely. When the packet core is working, mobile operators win customers. When it fails, they make national news for the wrong reasons.

Oghenemaero Oteri, a Delta State-born telecommunications engineer now directing engineering operations in Canada, has spent fifteen years making sure that the engine room does not fail. That work has taken him from mobile operator networks across sub-Saharan Africa to the 5G Standalone core infrastructure of one of North America’s largest telecommunications providers. Along the way, it has produced a professional record that the Nigeria Information Technology Award body has recognised on two separate occasions, and that an international community of researchers, peer reviewers, and professional associations has independently verified as standing at the high end of achievement in the field.

BusinessDay spoke with Oteri at length, examined his published research, and reviewed the institutional record to understand how that career was built, and what it means for the broader story of Nigerian technical talent on the global stage.

“I chose telecommunications because it is the infrastructure that everything else runs on. Financial services, healthcare, public safety, commerce: all of it depends on the network being up. That felt like a serious place to spend a career.”

BUILDING THE FOUNDATION: AFRICA AS A TECHNICAL CRUCIBLE
When Oteri joined Huawei Technologies Company Limited in November 2011, Africa’s mobile networks were in the middle of a transformation that had no real historical precedent. Entire countries were skipping the fixed-line era and connecting directly to mobile broadband. Subscriber bases were growing at rates that required engineers to expand, optimise, and troubleshoot infrastructure at a pace that left little margin for error.

Over nearly a decade, he worked on the mobile core infrastructure of operators in Nigeria, Ghana, Lesotho, Sierra Leone, South Africa, and Comoros, managing the packet core platforms that sat at the centre of each country’s mobile data network. He was responsible for performance management and optimisation, capacity planning and utilisation forecasting, network architecture design, and the incident management processes that determined how quickly a service-impacting event was contained and resolved.

“Working across six African countries taught me something no classroom or laboratory can. Every network has its own personality: its own failure modes, its own demand patterns, its own political pressures from the operator side. You either learn to read those differences quickly, or you spend your career being surprised by them.”

The most consequential technical outcome from this period was a 25 percent reduction in mobile network latency on the MTN Nigeria packet core, achieved through targeted optimisation of the network elements and signalling pathways that govern session establishment and maintenance. At the scale of a major national operator, a 25 percent latency improvement changes the commercial viability of an entire category of services: streaming applications, mobile payment platforms, and mobile health consultation services all cross viability thresholds at different latency levels. Oteri’s optimisation moved the network across several of those thresholds simultaneously.

Huawei recognised the quality of his work with its Future Star Award for Innovation Excellence in 2015, 2016, and again in 2018. Senior colleagues from that period have since described him, in formal professional assessments, as placing in the top one percent of engineers across the Huawei ecosystem during his tenure.

In April 2020, Oteri moved into a Solution Architect role at Ericsson, where he provided operational leadership for the MTN Nigeria packet core managed services engagement.

The role required him to manage service stability and SLA adherence across one of Africa’s largest mobile networks, while developing the key performance indicators, threshold alert frameworks, and post-incident review disciplines that determine the long-term reliability trajectory of the network.
It was during this period that his parallel research career began in earnest. The transition from pure operations into architecture created the intellectual space for a question that his fieldwork had been raising for years: how should an organisation decide how much computing infrastructure it actually needs, rather than how much it fears it might need?

“That question kept coming up on every network I worked on. Operators were consistently over-provisioning because the cost of under-provisioning is catastrophic and visible, while the cost of over-provisioning is just a budget line that nobody questions. I wanted to build a model that gave engineers and finance teams a rigorous answer instead of a conservative guess.”

The answer, worked out in collaboration with Abhishek Upreti and subsequently published as a peer-reviewed article, is a mathematical and algorithmic framework for cloud resource rightsizing and long-term usage forecasting in multi-cloud and hybrid-cloud environments. The paper draws directly on the operational realities that Oteri had observed across a decade of live network management. It has been discussed within the applied computing research community and recognised by the Global Association for Research and Innovation, which issued Oteri a formal Letter of Recognition for Distinguished Achievements, acknowledging his contributions to large-scale technological innovation in telecommunications and digital infrastructure.

In total, Oteri has authored twelve peer-reviewed scholarly articles in applied computing and telecommunications journals, served as a peer reviewer for eleven international journal manuscripts in cloud computing and information security, and accepted editorial board roles at multiple international academic publications, including serving as Editor of the Year at the Computer Science and Information Technology Research Journal.

NORTH AMERICA AND THE 5G STANDALONE CHALLENGE
In August 2021, Oteri was appointed as a Senior Advisor in recognition of his advanced expertise and proven track record in telecommunications infrastructure engineering. This role encompasses leadership in the planning and deployment of nationwide 5G Standalone core network rollouts across multiple Canadian regions, managing cross-functional teams of engineers, vendors, and government stakeholders, and making architectural decisions that will shape the performance and reliability of next-generation network infrastructure.

“A 5G Standalone deployment at national scale is not a single engineering problem. It is several hundred engineering problems that all have to be solved in the right sequence, with the right dependencies, under time pressure, and without taking down the 4G network that millions of subscribers are still using every day. The margin for sequencing errors is essentially zero.”

The 5G Standalone architecture is the enabling layer for services that Canadian industry, government, and consumers are counting on: industrial automation in manufacturing and logistics, remote health monitoring and telemedicine at a national scale, connected critical infrastructure, and low-latency enterprise connectivity for financial services firms. Canada’s federal government has identified 5G infrastructure as a national strategic priority. Oteri is among the senior engineers contributing to the technical execution of these complex systems. His work directly supports the deployment, optimisation, and reliability of infrastructure that underpins these critical services, further reinforcing his importance within this highly specialised and impactful field.
In parallel, he holds the Certified Kubernetes Administrator and Certified Kubernetes Application Developer credentials from the Cloud Native Computing Foundation, as well as the AWS Certified Solutions Architect Associate designation.

“The packet core and the cloud are no longer two separate disciplines. Carriers are now deploying core network functions as containerised workloads on Kubernetes clusters running in public cloud environments. If you understand only one side of that equation, your usefulness has a ceiling. I made sure I understood both.”
— Oghenemaero Oteri

THE AWARD RECORD AND WHAT IT ACTUALLY MEASURES
In December 2019, at the 5th edition of the Nigeria Information Technology Award, Oteri was named Emerging Data Network Engineering Professional of the Year. The NiTA, organised by Beta MEDIA Group and widely regarded as the foremost national recognition available to a Nigerian information technology professional, uses a structured nomination and judging process that excludes self-nomination and requires documented evidence of substantive technological achievement evaluated by a panel of senior practitioners and academic representatives.

In December 2024, at the 10th edition of the same award, he won again: Most Outstanding Core Data Network Engineering Professional of the Year. A five-year interval between two NiTA wins, in two different award categories, spanning two different phases of a career, is uncommon. The award body has recognised over a thousand corporate organisations and individuals for technology excellence across its editions. Winning twice, in the specific domain of core data network engineering, at a five-year interval that corresponds to the arc from mid-career field specialist to continental-scale infrastructure leader, is the kind of trajectory the award process was designed to identify.

Beyond the NiTA, Oteri holds Fellowship grade in the Chartered Institute of Information and Strategic Management (FCISM) and in the Global Association for Research and Innovation (FeGARI), both of which admit Fellows based on outstanding achievement assessed by recognised practitioners under published bylaws. A senior telecommunications engineering consultant who has tracked his career across multiple engagements described the breadth of his recognition plainly: “What Oteri did on those African networks was not a rehearsal. It was the real thing, at full scale, with real consequences.”

THE SYNTHESIS: WHY THIS CAREER MATTERS BEYOND THE CREDENTIALS
The instinct, when reviewing a career like Oteri’s, is to catalogue: count the awards, list the publications, note the certifications, and move on. That instinct misses what is actually interesting about the record, which is not its breadth but its coherence.
Each phase of the career created the conditions for the next. The African fieldwork, across six countries and nearly a decade, gave him an operational understanding of mobile networks functioning under real-world constraints: variable power supply, heterogeneous equipment from multiple vendors, high subscriber density, and the constant pressure of SLA commitments to operators with national coverage obligations. That understanding made him a more credible architect at Ericsson, a more rigorous researcher, and a more effective senior telecommunications expert.

“I think the mistake a lot of engineers make is treating the early, unglamorous work as the price you pay to get to the interesting stuff later. I never saw it that way. The work on those African networks was the interesting stuff. It was where I learned what mobile networks actually are, as opposed to what the textbooks say they are.”

The research record reinforces the operational record. The peer review activity confirms standing within the academic community that evaluates the research. The fellowships represent an independent professional community assessment of the cumulative achievement. The NiTA wins are the public, nationally institutionalised bookends of a career that the private professional community had already recognised in other ways.
For the Nigerian technology ecosystem, the lesson may be less about the specific technical domain and more about the trajectory’s structure. Oteri did not relocate abroad in search of a shortcut. He built a serious, well-documented technical foundation on Nigerian and African networks, accumulated credentials and recognitions at every stage, and carried that foundation to one of the most demanding telecommunications operators in North America. The world his work helps to connect is, in a meaningful sense, the same world that gave him the expertise to connect it.