AI Summary
Design and implement workflow engines, lead development tasks, and ensure long-term stability. 4-6 years of backend software development experience required. Strong fundamentals in workflow orchestration engines and production services.
Key Highlights
Design and implement workflow engines
Lead development tasks and code reviews
Ensure long-term stability and versioning strategy
Key Responsibilities
Deploy and configure Temporal/Camunda or similar Workflow Engine on Kubernetes
Design and implement SIM Activation workflow
Implement SIM Deactivation workflow with compensation and rollback logic
Implement Plan Change workflow
Design Inventory Management Database schema
Define workflow versioning strategy
Lead another developer on development tasks and code reviews
Order-triggered workflows
Network trigger handling
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
Technical Skills Required
Benefits & Perks
Fully remote
Opportunity for professional development
Exciting and challenging greenfield platform
Nice to Have
Direct Temporal.io production experience
Telecom network element experience
Diameter protocol (Ro/Gy/Gx)
Experience with mock-first development and contract testing
Prometheus + Grafana — instrumenting and monitoring workflow engines
Experience at a telecom operator, MVNO, or telecom vendor
Knowledge of eSIM / GSMA SGP.22 standard
Python — for tooling, scripting, test automation
Job 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.
Must Have
- 4–6 years backend software development experience.
- Required: Hands-on experience with a workflow orchestration engine.
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– 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 .
- 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.
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- 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.
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.
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