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.

Originally posted on Himalayas

Workflow & Provisioning Lead at Webbing