Description Implement Temporal workflow activities in Go: HSS adapter, PCRF adapter, Inventory update.
Build and validate unit tests for all workflow activities from day one.
Build the Inventory Management Database: tables, indexes, partitioning for 30M records.
Build bulk import tooling: CSV → ICCID/IMSI/MSISDN range ingestion from vendor.
Implement REST API endpoints for Inventory DB (allocate, reserve, release, query SIM records).
Write integration tests: workflow → mock NE → database assertions.
End-to-end test suite: full provisioning flow from SIM activation to order closed.
Load and stress testing: simulate peak TPS provisioning against all systems.
Test automation: CI pipeline integration for all workflow and API tests.
HSS sync integration: IMSI allocation state reflected in HSS (mock → real NE).
MNP (number portability) hooks in Inventory DB.
UAT support: reproduce bugs, write regression tests, validate fixes.
Go or Java — primary development language for this role is Go.
Java accepted if strong fundamentals and willing to work in Go (we will support the transition).
REST API development — building APIs consumed by other services and tested by automated suites.
PostgreSQL — table design, indexes, writing queries, understanding query plans.
Unit and integration testing — writing tests is a first-class responsibility, not an afterthought.
Git — branching, pull requests, code review participation.
Experience with event-driven architectures using RabbitMQ, Kafka, or Redis Pub/Sub.
Basic Kubernetes knowledge — understanding how your workloads are deployed.
Ability to work under technical direction of a senior lead and execute quickly.
Fluent English.
Strong Advantage * Any workflow engine experience: Temporal, Camunda, Apache Airflow, AWS Step Functions.
* Telecom or BSS/OSS background.