Remote Go Workflow Engineer – Greenfield Telecom Platform

Webbing; Warszawa; On-site; PLN 180,000 - 240,000; Full time

Benefits offered by this job

Fully remote

International team

Professional development

Job summary

Webbing is hiring a backend developer to implement Temporal-based workflow activities in Go and to own robust testing, database design for a 30M-record inventory, and API services for SIM records. You will contribute to bulk data imports, integration tests, and end-to-end provisioning tests in a fully remote, international team.

You’ll work under a senior lead, collaborate across services, and help shape a greenfield platform with modern tech and cloud-native practices.

Qualifications

• 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.
• 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.
• Git — branching, pull requests, code review participation.
• Experience with event-driven architectures using RabbitMQ, Kafka, or Redis Pub/Sub.
• Basic Kubernetes knowledge — understanding how workloads are deployed.
• Fluent English.

Responsibilities

• 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.

Skills

Go

Java

REST API

PostgreSQL

Unit testing

Integration testing

Git

RabbitMQ

Kafka

Redis Pub/Sub

Kubernetes

Temporal

Fluent English

Tools

Docker

Testify

Kubernetes

Prometheus

Job description

Webbing is hiring a backend developer to implement Temporal-based workflow activities in Go and to own robust testing, database design for a 30M-record inventory, and API services for SIM records. You will contribute to bulk data imports, integration tests, and end-to-end provisioning tests in a fully remote, international team.

You’ll work under a senior lead, collaborate across services, and help shape a greenfield platform with modern tech and cloud-native practices.