Horizon Telco Labs
Engineering Track Record/Representative Engagements

Representative Telecom Engineering Engagements

Representative engagements across telecom engineering and modernization, including billing platforms, network integrations, cloud-native transformation, and operational improvement initiatives.

Engagement Overview
Representative engagements across telecom engineering and modernization.
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Confidentiality and Verification Notice

The six projects below are representative examples that reflect the kind of engagements we take on. Client names are withheld under standard confidentiality practice. Additional project context and technical discussion may be available during a call, subject to confidentiality requirements.

Billing and OSS ModernizationpublicSoutheast Asia

Case Study 1: Billing Modernization for a Tier 1 Telecom Operator

Client Profile: Representative Mobile Network Operator
Hand-drawn billing modernization sketch showing legacy billing transforming into modular billing, rating, charging, and catalog services on cloud-native infrastructure
The Challenge

The operator's billing platform was a single, monolithic application running on manually managed servers. Adding a new pricing plan required a full regression test cycle and a scheduled release window, often a lengthy process. The system also lacked real-time charging flexibility, which limited the operator's ability to launch more competitive prepaid offers.

What We Built

A convergent billing platform rebuilt as a set of independent services, with separate capabilities for rating, charging, invoicing, reconciliation, and catalog management running on cloud-native infrastructure.

The Result

Improved reliability during peak operations and faster product and pricing change cycles across the billing environment.

Operational OutcomeImproved reliability during peak operations
Delivery OutcomeFaster product and pricing change cycles
Stack:JavaSpring BootKubernetesDockerAWSCI/CDGrafanaPrometheus
Network APIs for 5GpublicEurope

Case Study 2: Network API Integration for a Large Mobile Operator

Client Profile: Representative European Carrier
Hand-drawn telecom network API integration sketch showing network capabilities exposed through an API gateway to enterprise partners
The Challenge

The operator wanted to expose network capabilities such as SIM verification and location-based services to enterprise partners, but had no standardized way to do so. Each new partner integration created additional delivery complexity.

What We Built

A standards-aligned network API exposure layer was introduced between the operator's network and enterprise partners, enabling mobile network capabilities to be exposed through documented APIs with authentication and rate limiting.

The Result

Faster partner integration through standardized API exposure and a more structured approach to network capability delivery.

Integration OutcomeFaster partner integration through standardized API exposure
Architecture OutcomeStandards-aligned network capability exposure
Stack:JavaSpring BootKubernetesDockerAWSCI/CDCAMARAGSMA Open Gateway
Cloud Native and Microservices DevelopmentpublicMiddle East

Case Study 3: Monolith to Microservices Migration for a Telecom Software Vendor

Client Profile: Representative Telecom Software Vendor
Hand-drawn monolith-to-microservices sketch showing a telecom monolith transforming into independent microservices on Kubernetes
The Challenge

The vendor's OSS platform had grown into a single, tightly coupled application over several years. Every deployment carried real risk, and scaling meant scaling everything at once rather than only the components under load.

What We Built

An incremental migration to a microservices architecture, breaking the monolith apart by business domain, containerizing each service with Docker, and orchestrating deployment with Kubernetes in phases.

The Result

Shorter release cycles and reduced deployment risk, with high-traffic components able to scale more independently.

Release OutcomeShorter release cycles and reduced deployment risk
Platform OutcomeIndependent scaling for high-load components
Stack:JavaSpring BootKubernetesDockerCI/CDAWSHelm
AI and Automation for Telecom OperationspublicAfrica

Case Study 4: Predictive Monitoring Rollout for a National Telecom Operator

Client Profile: Representative National Telecommunications Provider
Hand-drawn telecom observability architecture showing operational systems feeding telemetry into monitoring, anomaly detection, alert prioritisation, and automated response
The Challenge

The operations team typically learned about system issues only after they caused visible service degradation. Monitoring existed but remained largely reactive, and there was no effective early warning mechanism.

What We Built

A broader observability layer using Prometheus and Grafana across operational systems, combined with anomaly detection to identify abnormal behavior earlier and support more proactive response workflows.

The Result

Earlier detection of abnormal system behaviour and reduced alert noise across monitored systems.

Operational OutcomeEarlier detection of abnormal system behaviour
Monitoring OutcomeReduced alert noise and improved prioritisation
Stack:PrometheusGrafanaJavaSpring BootKubernetesAWSOpenTelemetry
Billing and OSS ModernizationpublicLatin America

Case Study 5: Product Catalog and Digital Engagement Platform for an MVNO

Client Profile: Representative Mobile Virtual Network Operator
Hand-drawn telecom product catalog and digital engagement architecture showing plans, pricing and bundles connected to ordering and customer self-service channels
The Challenge

The operator managed pricing plans and bundles through manual configuration and spreadsheets, with no self-service ordering experience for customers. Every offer change required backend engineering effort.

What We Built

A flexible product catalog engine for plans, pricing, and bundles, paired with a digital engagement platform supporting self-service ordering and account-management experiences.

The Result

Faster launch of new plans and offers, alongside improved self-service adoption.

Commercial OutcomeFaster launch of new plans and offers
Customer OutcomeImproved self-service adoption
Stack:JavaSpring BootKubernetesDockerAWSCI/CDNext.js
Cloud Native & AI AutomationpublicEurope

Case Study 6: Legacy OSS Modernization and Observability Upgrade

Client Profile: Representative Fixed and Mobile Telco Operator
Hand-drawn legacy OSS modernization and observability sketch showing cloud-native services connected to monitoring, metrics, alerting, and operational visibility
The Challenge

The operator's OSS environment was aging, difficult to modify safely, and offered limited visibility into system health. Issues were often discovered through customer complaints rather than internal monitoring.

What We Built

A combined modernization engagement: core OSS capabilities were moved toward a cloud-native architecture, and observability was expanded with Prometheus, Grafana, and automated alerting.

The Result

Broader observability coverage across operational services and faster incident identification and response.

Observability OutcomeBroader observability coverage across operational services
Operational OutcomeFaster incident identification and response
Stack:JavaSpring BootKubernetesDockerAWSCI/CDGrafanaPrometheus
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