Capability architecture, end-to-end.

1. 01

   Telecommunications Infrastructure

   Carrier networks, VAS, signalling, OSS/BSS, charging & operator-grade platforms.

   Service platforms that live inside a carrier's network rather than beside it: SMPP and SMSC message paths, USSD session logic, voice and IVR services, and the integration seams into charging, provisioning and subscriber data. Correctness outranks throughput here — a mis-rated event or a dropped session is a revenue and regulatory question, not a bug ticket.

   • SS7 / Diameter
   • SMPP & USSD
   • Charging integration
2. 02

   Enterprise Software Engineering

   Mission-critical platforms with distributed services, observability and reliability budgets.

   Distributed systems built against a stated reliability budget, where the interface contract, the failure mode and the rollback path are designed before the feature is. Observability belongs to the definition of done: if an incident cannot be reconstructed from telemetry afterwards, the service is not finished.

   • Distributed services
   • Reliability budgets
   • Design for rollback
3. 03

   Cloud & DevOps

   Hybrid cloud, GitOps pipelines, IaC, containers, service mesh and platform engineering.

   Platform engineering rather than ticket-driven ops: Terraform and Ansible for provisioning, GitOps for reconciliation, containers and service mesh for the runtime — packaged into a path teams can ship on without filing a request. Hybrid is the assumption, since some workloads never leave the data centre and the pipeline has to treat both targets alike.

   • Terraform & Ansible
   • GitOps / ArgoCD
   • Kubernetes & mesh
4. 04

   Cybersecurity

   Zero-trust, identity, network segmentation, threat modelling and compliance programmes.

   Security treated as an architecture property: identity as the boundary, segmentation that caps blast radius, secrets held in a vault instead of a pipeline variable, and hardening baselines applied at build time. Threat modelling runs against the design, and compliance is planned as evidence produced continuously — not assembled the week before an audit.

   • Zero trust & IAM
   • Segmentation
   • Hardening baselines
   • Audit evidence
5. 05

   AI Automation

   LLM-integrated operations, intelligent workflow systems and ML observability.

   Language models placed where they carry operational load: retrieval over an organisation's own documents and telemetry, assisted triage, and agentic workflows running under scoped permissions. Treated as production software — evaluated against real cases, observed in flight, and given a deterministic fallback for the day the model is confidently wrong.

   • RAG pipelines
   • Agentic workflows
   • Model observability
6. 06

   Data Centre Architecture

   Power, cooling, network topology, rack design and operational runbooks.

   The physical layer every other capability quietly assumes: power and cooling headroom, rack and cabling discipline, topology with no silent single point of failure, and runbooks written for the engineer on shift at 3am rather than for the design review. Capacity is planned against the growth curve, not against this month's bill.

   • Power & cooling
   • Topology & redundancy
   • Runbook discipline
7. 07

   Network Engineering

   Carrier-grade routing, MPLS, BGP, SDN/NFV, transport and access layers.

   Routing and transport designed to carrier expectations: MPLS and BGP policy that converges predictably, SDN/NFV where it genuinely reduces hardware dependency, and access-layer design that degrades gracefully instead of failing whole. Change control is part of the engineering — most network outages are configuration events, not equipment failures.

   • MPLS & BGP
   • SDN / NFV
   • Transport & access
8. 08

   Enterprise Systems

   ERP-adjacent platforms, integration fabrics, data plane and business orchestration.

   The connective tissue between systems never designed to meet: integration fabrics, event and batch flows, and a data plane where the record of truth for each entity is stated rather than assumed. Business processes are modelled explicitly, so changing one becomes a configuration decision instead of a migration project.

   • Integration fabrics
   • Data plane ownership
   • Process orchestration
9. 09

   Infrastructure Operations

   SRE practice, incident response, capacity planning, 24/7 NOC enablement.

   Running estates as a practice rather than a rota: measured service levels, an incident process with declared severity and a single commander, blameless review that actually changes the system, and capacity planned ahead of the curve. NOC enablement is mostly documentation and drill — the tooling is the easy half.

   • SRE practice
   • Incident command
   • Capacity planning
   • 24/7 NOC
10. 10

    Strategic Technology Leadership

    Org design, technology roadmaps, vendor strategy and executive sponsorship.

    The layer where engineering meets budget: team structure matched to the architecture, roadmaps sequenced by dependency and risk rather than enthusiasm, and vendor strategy that makes switching costs visible before a contract is signed. Executive sponsorship means translating an infrastructure decision into the commercial terms it will ultimately be judged on.

    • Org design
    • Roadmap sequencing
    • Vendor strategy

• Cloud & Platform

  Multi-target out of necessity rather than preference: public cloud where elasticity pays for itself, OpenStack and VMware where a workload is bound to a data centre by regulation or latency, and Kubernetes as the common runtime that keeps the deployment story identical across both. Platform choice follows the workload's constraints — data residency, egress cost, failure domain — not a vendor relationship.

  • AWS
  • GCP
  • Azure
  • Kubernetes
  • OpenStack
  • VMware
  • Proxmox

• DevOps & Automation

  Terraform describes what should exist, Ansible converges what is already running, and ArgoCD reconciles the cluster against the repository — so the repo, rather than someone's terminal history, is the source of truth. Pipelines are kept deliberately boring: reproducible builds, promotion between environments, and a rollback that has been executed at least once before it is needed.

  • Terraform
  • Ansible
  • GitOps / ArgoCD
  • Jenkins
  • GitHub Actions
  • Helm

• Linux & Infrastructure

  The layer where performance problems are actually solved: distribution chosen for support lifecycle rather than familiarity, systemd units used deliberately for isolation and restart behaviour, kernel and networking parameters tuned against measurement, and Ceph where storage has to scale horizontally without a proprietary controller. Hardening is applied at image build, not after deployment.

  • RHEL / Rocky
  • Debian / Ubuntu
  • Systemd
  • Networking Stack
  • Storage / Ceph

• Telecom & Network

  Carrier-side competence across both planes: MPLS and BGP carrying transport and policy, SS7 and Diameter for signalling and interworking with legacy core elements, and SDN/NFV where functions can genuinely move off dedicated hardware. Everything terminates in OSS/BSS — a service that cannot be provisioned, rated and billed is not yet a service.

  • MPLS
  • BGP
  • SDN / NFV
  • SS7 / Diameter
  • 5G Core Concepts
  • Carrier OSS/BSS

• AI & Data

  Retrieval-grounded systems in preference to fine-tuned ones wherever the knowledge moves faster than a training cycle: documents and telemetry indexed into vector stores, prompts and tools versioned like code, and evaluations run against captured real cases before a change ships. Observability covers cost and latency alongside answer quality, since an unwatched model becomes an unbounded bill.

  • LLM Integration
  • RAG Pipelines
  • Vector Stores
  • MLOps
  • Observability

• Security

  Identity first: SSO and scoped roles as the real perimeter, Vault holding secrets that pipelines fetch at runtime instead of storing, and hardening baselines encoded so a fresh host starts compliant rather than being remediated into compliance. SIEM and SOC workflows close the loop — detection only counts when someone owns the alert and the response path is written down.

  • Zero Trust
  • IAM / SSO
  • Vault
  • SIEM / SOC
  • Hardening Baselines

• Cloud

  Architecture-level certification across all three hyperscalers — the basis for designing hybrid estates without defaulting to a single vendor's answer.

  • AWS Certified Solutions Architect — Professional

    AWS SAP · Amazon Web Services

  • Azure Solutions Architect Expert

    Azure Architect · Microsoft

  • Professional Cloud Architect

    Google PCA · Google Cloud

• Security

  Governance and cloud security certified alongside hands-on network enforcement — policy that can be designed, then actually implemented on the perimeter.

  • Certified Information Systems Security Professional

    CISSP · ISC²

  • Certified Cloud Security Professional

    CCSP · ISC²

  • Palo Alto Networks Certified Network Security Engineer

    PCNSE · Palo Alto Networks

• Infrastructure

  The operating layer certified end to end — host, orchestration and carrier-side network — which is where carrier-grade and regulated workloads are actually kept alive.

  • Red Hat Certified Engineer

    RHCE · Red Hat

  • Certified Kubernetes Administrator

    CKA · Cloud Native Computing Foundation

  • Cisco Certified Network Professional

    CCNP · Cisco · Service Provider track

• Leadership

  Architecture, delivery and service-management frameworks — the vocabulary enterprise and public-sector procurement runs on, and the structure programmes are audited against.

  • TOGAF — The Open Group Architecture Framework

    TOGAF · The Open Group · TOGAF 10 Foundation (Part 1)

  • Project Management Professional

    PMP · Project Management Institute

  • ITIL — IT Service Management

    ITIL · PeopleCert / AXELOS · ITIL 4 Foundation

Technologies

Messaging

SMPP · SMSC · MMSC · RCS · USSD

Signalling

SS7 · Diameter · SIP

Core

IMS · OTA · STK · HLR · HSS · IN · CAMEL

Charging

Charging Gateway · PCRF · OCS

API

API Gateway · CPaaS