Workflow & Provisioning Lead

Stack

Responsibilities

• ▹Deploy and configure a Temporal/Camunda (or similar) workflow engine on Kubernetes, self-hosted, production-grade
• ▹Design and implement the SIM activation workflow (HSS, OCS, PCRF, Inventory integration)
• ▹Implement the SIM deactivation workflow with compensation and rollback logic
• ▹Implement the plan-change workflow (OCS quota and PCRF policy updates)
• ▹Design the Inventory Management database schema at 30M+ record scale
• ▹Define a workflow versioning strategy
• ▹Lead another developer on development tasks and code reviews from week one
• ▹Handle order-triggered workflows and network-trigger signals via Kong API Gateway
• ▹Define retry policies, dead-letter handling, and alerting per workflow type
• ▹Operate the Temporal production cluster, including HPA configuration
• ▹Run end-to-end integration and load testing, author runbooks
• ▹Provide post go-live hypercare and continuous improvement

Requirements

• ▹4-6 years of backend software development experience
• ▹Hands-on experience with a workflow orchestration engine (Temporal.io strongly preferred at worker/activity/signal/timer level; Camunda or Apache Airflow accepted with strong fundamentals)
• ▹Comfortable building production services in Go or Java
• ▹REST API design and implementation (consumed by Kong API Gateway)
• ▹PostgreSQL: schema design, indexing, query optimization on large (10M+ row) tables
• ▹BSS/OSS domain knowledge: provisioning flows, SIM lifecycle, telecom service activation
• ▹Kubernetes: operating workloads, not just writing YAML
• ▹Experience with event-driven architectures (RabbitMQ, Kafka, or Redis Pub/Sub)
• ▹Designing for failure: retry policies, idempotency, compensation logic, DLQ
• ▹Ability to lead a junior/mid developer day-to-day
• ▹Fluent English

Nice to have

• ▹Direct Temporal.io production experience (SDK, worker configuration, namespace management)
• ▹Telecom network element experience (HSS, OCS, PCRF, SMSC interfaces)
• ▹Basic familiarity with the Diameter protocol (Ro/Gy/Gx)
• ▹Mock-first development and contract testing
• ▹Prometheus + Grafana for instrumenting workflow engines
• ▹Experience at a telecom operator, MVNO, or telecom vendor (Ericsson, Nokia, Huawei, etc.)
• ▹Knowledge of eSIM / GSMA SGP.22
• ▹Python for tooling, scripting, test automation

Soft skills

What we offer

• ▹Fully remote
• ▹Professional development opportunities within a reputable, growing international company
• ▹An exciting greenfield platform with skill-development opportunities
• ▹Joining a team of highly professional specialists

About the company

Webbing is a global data MVNO delivering enterprise-grade global connectivity and IoT services across 200+ countries and 600+ mobile carrier networks, with secured network protection and web content intelligence.