Workflow & Provisioning Lead

Description Deploy and configure Temporal/Camunda or similar Workflow Engine on Kubernetes (self-hosted, production-grade). Design and implement SIM Activation workflow: activities for HSS, OCS, PCRF, Inventory update. Implement SIM Deactivation workflow with compensation and rollback logic. Implement Plan Change workflow (OCS quota update + PCRF policy change). Design Inventory Management Database schema: ICCID, IMSI, MSISDN — 30M+ record scale. Define workflow versioning strategy (Temporal GetVersion API or similar) — foundational for long-term stability. Lead another developer on development tasks and code reviews from week one. Order-triggered workflows: Order DB → Temporal/similar signal handler. Network trigger handling: location updates → workflow signals via Kong API Gateway. Retry policies, dead-letter handling, and alerting per workflow type. Temporal production cluster operations and HPA configuration. nd-to-end integration testing, load testing, runbook authoring. Post go-live hypercare and continuous improvement. Requirements Must Have 4–6 years backend software development experience. Required: Hands-on experience with a workflow orchestration engine. – Temporal.io strongly preferred — production experience with workers, activities, signals, timers. – Camunda, Apache Airflow, or equivalent accepted if strong fundamentals. Go or Java — must be comfortable building production services in at least one. REST API design and implementation (designing APIs consumed by Kong API Gateway). PostgreSQL — schema design, indexes, query optimisation for large datasets (10M+ rows). BSS/OSS domain knowledge: provisioning flows, SIM lifecycle, telecom service activation. Kubernetes — deploying and operating workloads on K8s (not just writing YAML). Experience with event-driven architectures using RabbitMQ, Kafka, or Redis Pub/Sub . Experience designing for failure: retry policies, idempotency, compensation logic, DLQ. Ability to lead a junior/mid developer day-to-day Fluent English . Strong Advantage Direct Temporal.io production experience (SDK, worker configuration, namespace management). Telecom network element experience: HSS, OCS, PCRF, SMSC interfaces. Diameter protocol (Ro/Gy/Gx) — even basic familiarity is valuable. Experience with mock-first development and contract testing. Prometheus + Grafana — instrumenting and monitoring workflow engines. Nice to Have Experience at a telecom operator, MVNO, or telecom vendor (Ericsson, Nokia, Huawei, etc.). Knowledge of eSIM / GSMA SGP.22 standard. Python — for tooling, scripting, test automation. About Webbing Founded 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 offer Fully remote The opportunity for professional development within a reputable international innovative and growing company. 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.