Workflow Developer, Tester

Job not on LinkedIn

🔥 0 minutes ago

🇵🇱 Poland – Remote

⏰ Full Time

🟢 Junior

🟡 Mid-level

🔧 QA Engineer (Quality Assurance)

🚫👨‍🎓 No degree required

👻 Ghost score 11%

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Webbing

WebsiteLinkedInAll Job Openings

51 - 200 employees

📡 Telecommunications

🔒 Cybersecurity

Telecommunications • Cybersecurity

Webbing is a global data MVNO that delivers innovative enterprise-grade global connectivity and IoT services. With a secured network of over 600 mobile carriers across more than 200 countries, Webbing ensures superior data connectivity between businesses, people, and devices regardless of their location. Founded in 2010, the company specializes in developing advanced SIM technology and management platforms, offering a streamlined solution for organizations to manage their global fleet of devices. Their software allows enterprise customers to oversee and optimize data usage in real-time, promoting compliance and cost savings. Webbing combines the reach of a global carrier with the quality of a local one, offering unique, flexible solutions.

📋 Description

• Implement Temporal workflow activities in Go, including HSS adapter, PCRF adapter, and Inventory update • Build and validate unit tests for all workflow activities • Build the Inventory Management Database with tables, indexes, and partitioning for 30M records • Build bulk import tooling for CSV-to-ICCID/IMSI/MSISDN range ingestion from vendors • Implement REST API endpoints for allocating, reserving, releasing, and querying SIM records • Write integration tests covering workflow, mock NE, and database assertions • Support the Senior Developer on workflow development tasks through expected pair programming • Build an end-to-end test suite covering SIM activation through order closure • Perform load and stress testing for peak-TPS provisioning across all systems • Integrate workflow and API tests into the CI pipeline • Implement HSS synchronization so IMSI allocation state is reflected in HSS • Add MNP hooks in the Inventory Database • Support UAT by reproducing bugs, writing regression tests, and validating fixes

🎯 Requirements

• 2–4 years backend software development in production environments • Go or Java; primary development language is Go • Java accepted with strong fundamentals and willingness to transition to Go • REST API development • PostgreSQL: table design, indexes, queries, and query plans • Unit and integration testing • Git: branching, pull requests, and code review participation • Experience with event-driven architectures using RabbitMQ, Kafka, or Redis Pub/Sub • Basic Kubernetes knowledge • Ability to work under technical direction of a senior lead and execute quickly • Fluent English • Strong advantage: workflow engine experience such as Temporal, Camunda, Apache Airflow, or AWS Step Functions • Strong advantage: telecom or BSS/OSS background • Strong advantage: Go testing, Testify, or mock frameworks • Strong advantage: load testing with k6, Locust, or JMeter • Strong advantage: Docker • Strong advantage: event-sourced or append-only database patterns • Nice to have: Temporal.io SDK experience • Nice to have: Python • Nice to have: Prometheus • Nice to have: familiarity with Diameter, SS7, or SMPP

🏖️ Benefits

• Fully remote • Great skill and knowledge development opportunities • Opportunity to join a team of highly professional specialists in an international environment • Professional development within a reputable international innovative and growing company