$ cat ./case-studies/customer-health-platform.md
Customer health platform for a VoIP provider
Designing an internal platform for Primo Dialler, a telecoms/VoIP provider, that brings call data and carrier traffic into a single view of each customer's health.
- company:
- Primo Dialler
- period:
- Sept 2026 — present
- role:
- Software Engineer (part-time)
01 goal
Bring carrier and traffic data together into a single view of each customer's health.
02 starting point
Customer call data held in ClickHouse, and carrier and traffic data available through the Peeredge API.
03 decisions
- 01
Start from the data
Analysed the ClickHouse schemas and call data to shape the system architecture.
- 02
Integrate the Peeredge API
Integrated the Peeredge API to pull carrier and traffic data into the same view as the call data.
- 03
Work from the telecoms domain
Worked hands-on with VoIP systems — SIP, call flows and routing — and with monitoring and observability.
- 04
Investigate across the stack
Troubleshoots issues across applications, infrastructure and customer data.
- ClickHouse
- Peeredge API
- VoIP
- SIP
- Observability
// client work is confidential — happy to go deeper on the architecture in an interview.
$ ls ./case-studies
- Monolith → microservices on Google CloudLed the migration of a confidential enterprise SaaS platform from a monolith to event-driven microservices — downtime −40%, deployment time −50%.
- Healthcare API: 60s+ → ~7sModernised a confidential healthcare SaaS platform — swapped an HTTP-based backend integration for the OystEHR SDK and cut API response times from 60s+ to about 7s.
- GraphQL performance layer: +65%Improved an enterprise app's performance by 65% with GraphQL query batching and caching, and delivered a Firebase Cloud Messaging notification pipeline end to end.
- PowerPick — a fantasy cricket league appBuilt end to end for Bitsol: a cross-platform React Native app that replaced a manual Google Forms and Excel workflow, on a fully serverless Firebase backend.
- OpenTask — a project-management platformMy final-year project: a complete MERN project-management platform with task and milestone tracking, team coordination, and real-time chat and notifications over WebSockets.
- AI integration & frontend systemsBuilt React/TypeScript interfaces for multi-agent AI systems, integrated OpenAI to cut manual email drafting by 70%, and delivered end-to-end Firebase Cloud Messaging pipelines.
// like what you see?
- role:
- permanent · full-time
- start:
- Sept 2027
- visa:
- sponsorship required
- relocation:
- ready to relocate