Workflow & Provisioning Lead

• 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.

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.