DescriptionImplement 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 β ICCID/IMSI/MSISDN range ingestion from vendor.Implement REST API endpoints for Inventory DB (allocate, reserve, release, query SIM records).Write integration tests: workflow β mock NE β database assertions.Support Sr.
Developer on all workflow development tasks β 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 β real NE).MNP (number portability) hooks in Inventory DB.UAT support: reproduce bugs, write regression tests, validate fixes.RequirementsMust Have2β4 years backend software development in production environments.Go or Java β 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 β building APIs consumed by other services and tested by automated suites.PostgreSQL β table design, indexes, writing queries, understanding query plans .Unit and integration testing β writing tests is a first-class responsibility, not an afterthought.Git β branching, pull requests, code review participation.Experience with event-driven architectures using RabbitMQ, Kafka, or Redis Pub/Sub.Basic Kubernetes knowledge β 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 β understanding of SIM lifecycle, provisioning, activation.* Test framework
experience: Go testing, Testify, mock frameworks.* Load testing tools: k6, Locust, JMeter β running and interpreting results.* Docker β building and running containerised services.* Experience with event-sourced or append-only database patterns.Nice to HaveTemporal.io SDK experience β even personal/side project counts.Python β useful for scripting, test tooling, data processing.Prometheus β understanding how to instrument code with metrics.Telecom protocol familiarity: Diameter, SS7, SMPP.About WebbingFounded in early 2010, Webbing is a global data MVNO that delivers enterprise grade, global connectivity and IoT services across more than 200 countries and 600+ mobile carriers' networks.
Webbing's secured network delivers network protection and web content intelligence.Enterprise customers can manage, monitor, and optimize data usage in real-time with Webbing's powerful software platform.
Gain visibility by application type and have the power to white list applications and limit non-business applications with the click of a button, saving money and improving compliance.What we offerFully remoteAn 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.Originally posted on Himalayas
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