Telstra
Four programmes as cloud and DevOps architect: invoicing, platform verification, 000 emergency calls and eSIM support.
- Telstra
- Cloud and DevOps architect
- 2018 – 2022
- 4
DS-Invoicing
Receipt and invoice microservices for every Telstra payment scenario, on ECS and EKS.
- Cloud and DevOps architect
- 5 people
What it is
Telstra generates receipts and invoices for sales orders, subscriptions, prepaid recharges, retried failed payments and invoice payments. DS-Invoicing splits this into Receipt, Invoice and Document Manager services.
The problem
Many payment paths need documents, and some must be reversed: a receipt has to be voided when a bank payment is declined or disputed.
Architecture
Requests flow left to right. Hover a component for its role.
- Payment events client, orders, subscriptions, recharges
- Receipt Manager service
- Invoice Manager service
- Document Manager service
- S3 data, documents
- ECS and EKS infrastructure
Key decisions
Split by document lifecycle
Receipts, invoices and rendered documents are separate services, so a void or re-trigger touches only the service that owns it.
Highlights
- Handles sales orders, subscriptions, failed-payment retries, prepaid recharges and invoice payments.
- Voids issued receipts when a bank payment is declined or disputed.
Stack
AVITA
Automated platform verification tests that Telstra teams run from a UI or an API.
- Cloud architect and full-stack developer
- 5 people
What it is
AVITA lets teams create and run Platform Verification Tests from a web UI or through an API, before, during and after infrastructure changes.
The problem
Verification tests were slow and laborious to run, so teams ran fewer of them around infrastructure changes than they should have.
Architecture
Requests flow left to right. Hover a component for its role.
- Vue UI client
- Pipelines via API client
- Spring Boot API service, Pivotal Cloud Foundry
- Test runner worker
- Platform under test external
Key decisions
API first
Everything the UI can do is available through the API, so tests can run inside deployment pipelines without a person clicking.
Highlights
- Cut the time and effort needed to run a verification test.
- Made fuller test suites practical around every infrastructure change.
Stack
000 Legacy Call Retrieval
The operator system behind Australia's 000 emergency line for answering and dispatching calls.
- Cloud architect and full-stack developer
- 5 people
What it is
The IT component that lets emergency-call operators answer 000 calls, determine which emergency service is needed and dispatch the caller, while storing call data and a reference to each recording.
The problem
Operators need a fast, reliable interface for emergency calls, and every call's data and recording must be retrievable later.
Architecture
Requests flow left to right. Hover a component for its role.
- Operator console client, Vue
- Spring Boot API service, Docker
- Call records data
- Call recordings external, E000RVR
Key decisions
Store references, not recordings
Call data is stored with a reference to the recording held in the recording system, so retrieval stays fast and storage stays in one place.
Highlights
- Supports operators answering and dispatching 000 callers.
- Keeps every call's data and recording retrievable.
Stack
eSIM Help and Support
Support app for Telstra's eSIM launch, the first in Australia.
- Cloud architect and full-stack developer
- 2 people
What it is
Telstra was the first Australian carrier to launch eSIM. This application helps customers resolve problems with their eSIM.
The problem
A new technology launch brings new support questions, and customers needed a self-service way to fix eSIM issues.
Architecture
Requests flow left to right. Hover a component for its role.
- React and Redux app client
- Spring Boot API service, Pivotal Cloud Foundry
- Telstra back-end services external
Key decisions
Tested on both sides
Jest on the front end and JUnit with Mockito on the back end, delivered through Bamboo.
Highlights
- Built by a two-person team for a national launch.
- Self-service help for eSIM activation and carrier switching.