Workflow Developer & Tester
About this role
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.
Support Sr. Developer on all workflow development tasks - pair programming expected.
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.
Requirements
- 2-4 years backend software development in production environments.
- 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 - u