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Open nowFirst seen 3 hours ago

Workflow Developer & Tester

webbing/46.00e33 open roles

Where
Netherlands (Remote), Remote
Work mode
Remote
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Your applicationOpen nowWorkflow Developer & Testerwebbing/46.00e · Netherlands (Remote), Remote

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The clock on this job

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Share of postings closed within
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  2. 4.4%3 days
  3. 11.5%7 days
  4. 18.1%14 days
  5. 35.6%30 days
  6. 44.6%60 days
This job: first seen 3 hours ago

The posting

  • Implement Temporal workflow activities in Go: HSS adapter, PCRF adapter, Inventory update.
  • Build and validate unit tests for all workflow activities from day one.
  • Build the Inventory Management Database: tables, indexes, partitioning for 30M records.
  • Build bulk import tooling: CSV → ICCID/IMSI/MSISDN range ingestion from vendor.
  • Implement REST API endpoints for Inventory DB (allocate, reserve, release, query SIM records).
  • Write integration tests: workflow → mock NE → database assertions.
  • Support Sr. Developer on all workflow development tasks — pair programming expected.
  • End-to-end test suite: full provisioning flow from SIM activation to order closed.
  • Load and stress testing: simulate peak TPS provisioning against all systems.
  • Test automation: CI pipeline integration for all workflow and API tests.
  • HSS sync integration: IMSI allocation state reflected in HSS (mock → real NE).
  • MNP (number portability) hooks in Inventory DB.
  • UAT support: reproduce bugs, write regression tests, validate fixes.

Requirements

Must Have

  • 2–4 years backend software development in production environments.
  • Go or Java — primary development language for this role is Go.
  • Java accepted if strong fundamentals and willing to work in Go (we will support the transition).
  • REST API development — building APIs consumed by other services and tested by automated suites.
  • PostgreSQL — table design, indexes, writing queries, understanding query plans .
  • Unit and integration testing — writing tests is a first-class responsibility, not an afterthought.
  • Git — branching, pull requests, code review participation.
  • Experience with event-driven architectures using RabbitMQ, Kafka, or Redis Pub/Sub.
  • Basic Kubernetes knowledge — understanding how your workloads are deployed.
  • Ability to work under technical direction of a senior lead and execute quickly.
  • Fluent English.

Strong Advantage

  • * Any workflow engine experience: Temporal, Camunda, Apache Airflow, AWS Step Functions.
  • * Telecom or BSS/OSS background — understanding of SIM lifecycle, provisioning, activation.
  • * Test framework experience: Go testing, Testify, mock frameworks.
  • * Load testing tools: k6, Locust, JMeter — running and interpreting results.
  • * Docker — building and running containerised services.
  • * Experience with event-sourced or append-only database patterns.

Nice to Have

  • Temporal.io SDK experience — even personal/side project counts.
  • Python — useful for scripting, test tooling, data processing.
  • Prometheus — understanding how to instrument code with metrics.
  • Telecom protocol familiarity: Diameter, SS7, SMPP.

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
  • 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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