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Workflow Developer & Tester

Webbing
Remote Remote - Unknown
$90k - $140k (est.) -25% vs avg
Posted May 13, 2026
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About This Role

Developer on all workflow development tasks — pair programming expected.</li><li>End-to-end test suite: full provisioning flow from SIM activation to order closed.</li><li>Load and stress testing: simulate peak TPS provisioning against all systems.</li><li>Test automation: CI pipeline integration for all workflow and API tests.</li><li>HSS sync integration: IMSI allocation state reflected in HSS (mock → real NE).</li><li>MNP (number portability) hooks in Inventory DB.</li><li>UAT support: reproduce bugs, write regression tests, validate fixes.</li></ul><h3>Requirements</h3><h3>Must Have</h3><ul><li>2–4 years backend software development in production environments.</li><li>Go or Java — primary development language for this role is Go.</li><li>Java accepted if strong fundamentals and willing to work in Go (we will support the transition).</li><li>REST API development — building APIs consumed by other services and tested by automated suites.</li><li>PostgreSQL — table design, indexes, writing queries, understanding query plans .</li><li>Unit and integration testing — writing tests is a first-class responsibility, not an afterthought.</li><li>Git — branching, pull requests, code review participation.</li><li>Experience with event-driven architectures using RabbitMQ, Kafka, or Redis Pub/Sub.</li><li>Basic Kubernetes knowledge — understanding how your workloads are deployed.</li><li>Ability to work under technical direction of a senior lead and execute quickly.</li><li>Fluent English.</li></ul><h3>Strong Advantage</h3><ul><li>* Any workflow engine experience: Temporal, Camunda, Apache Airflow, AWS Step Functions.</li><li>* Telecom or BSS/OSS background — understanding of SIM lifecycle, provisioning, activation.</li><li>* Test framework experience: Go testing, Testify, mock frameworks.</li><li>* Load testing tools: k6, Locust, JMeter — running and interpreting results.</li><li>* Docker — building and running containerised services.</li><li>* Experience with event-sourced or append-only database patterns.</li></ul><h3>Nice to Have</h3><ul><li>Temporal.io SDK experience — even personal/side project counts.</li><li>Python — useful for scripting, test tooling, data processing.</li><li>Prometheus — understanding how to instrument code with metrics.</li><li>Telecom protocol familiarity: Diameter, SS7, SMPP.</li></ul><h3>About <a href="https://himalayas.app/companies/webbing">Webbing</a></h3><p>Founded in early 2010, <a href="https://himalayas.app/companies/webbing">Webbing</a> is a global data MVNO that delivers enterprise grade, global connectivity and IoT services across more than 200 countries and 600+ mobile carriers' networks. <a href="https://himalayas.app/companies/webbing">Webbing</a>'s secured network delivers network protection and web content intelligence.</p><p>Enterprise customers can manage, monitor, and optimize data usage in real-time with <a href="https://himalayas.app/companies/webbing">Webbing</a>'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.</p><h3>What we offer</h3><ul><li>Fully remote</li><li>An exciting and challenging greenfield platform with great skill and knowledge development opportunities.</li><li>The opportunity to join a team of highly professional specialists in an international environment.</li><li>The opportunity for professional development within a reputable international innovative and growing company.</li></ul><p>Originally posted on <a href="https://himalayas.app">Himalayas</a></p>

Description

  • 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.

Originally posted on Himalayas

Source: https://himalayas.app/companies/webbing/jobs/workflow-develo...