Workflow Developer & Tester

Responsibilities 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). 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. MNP (number portability) hooks in Inventory DB. UAT support: reproduce bugs, write regression tests, validate fixes. RequirementsMust Have 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. 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. Strong Advantage Any workflow engine experience: Temporal, Camunda, Apache Airflow, AWS Step Functions. Telecom or BSS/OSS background — understanding of SIM lifecycle, provisioning, activation. Test framework experience: Go testing, Testify, mock frameworks. Load testing tools: k6, Locust, JMeter — running and interpreting results. Docker — building and running containerised services. Experience with event-sourced or append-only database patterns. Nice to Have Temporal.io SDK experience — even personal/side project counts. Python — useful for scripting, test tooling, data processing. Prometheus — understanding how to instrument code with metrics. What We Offer Fully remote An exciting and challenging greenfield platform with great skill and knowledge development opportunities. The opportunity to join a team of highly professional specialists in an international environment. The opportunity for professional development within a reputable international innovative and growing company. J-18808-Ljbffr