$ cat ./case-studies/graphql-performance-layer.md
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.
- company:
- Bitsol
- period:
- Jul 2023 — Jul 2026
- role:
- Associate Software Engineer, then Software Engineer
- +65%app performance
01 goal
Improve enterprise application performance, and deliver push notifications end to end.
02 starting point
An enterprise application using GraphQL.
03 decisions
- 01
Batch GraphQL queries
Batched queries with Apollo's BatchHttpLink, so multiple operations share one network request.
- 02
Cache on the client
Added caching with Apollo's InMemoryCache. Batching and caching together gave the 65% performance improvement.
- 03
Ship notifications end to end
Delivered a Firebase Cloud Messaging notification pipeline end to end.
- GraphQL
- Apollo
- Firebase Cloud Messaging
- React
- TypeScript
$ 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.
- Customer health platform for a VoIP providerDesigning 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.
- 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