- 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.
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.
Skills Required
- 4-6 years backend software development experience
- Hands-on experience with a workflow orchestration engine (Temporal.io preferred)
- Proficient in Go or Java
- REST API design and implementation knowledge
- PostgreSQL schema design and query optimization experience
- Experience with Kubernetes deployments
- Event-driven architecture experience (RabbitMQ, Kafka, Redis)
- Ability to lead a junior/mid developer
- Fluent English
What We Do
Webbing is a global data MVNO that delivers innovative enterprise grade, global connectivity and IoT services. Our secured network of 600+ mobile carriers across more than 200 countries, ensures superior data connectivity between business, people and things wherever the device is located. Since our foundation in 2010, we have been developing revolutionary SIM technology, powerful management platforms and a robust global network. Our leading-edge solutions deliver a streamlined, centralized, and scalable means of deploying and managing organizations' global fleet of devices. Our experts assist in every step of the device on boarding process to ensure you are set up to meet your organization’s connectivity needs. Enterprise customers can manage, monitor, and optimize data usage in real-time with Webbing’s dynamic software platform. Gain visibility by application type and have the power to safe list applications and limit non-business applications with the click of a button, saving money and improving compliance. Our superior technology combined with our solid strategic partnerships provide our customers with the perfect balance of the benefits of a local and roaming carrier. We deliver the reach of a global carrier with the quality of a local one with a single carrier that has flexible offerings, low latency, and sustainability at competitive rates.
