Workflow Developer & Tester (Go)

TL;DR

Workflow Developer & Tester (Go): Implementing Temporal workflow activities and building an Inventory Management Database for a global data MVNO with an accent on high-load data ingestion and system integration. Focus on developing REST APIs, designing scalable PostgreSQL schemas, and ensuring reliability through comprehensive unit and integration testing.

Location: Fully remote (Office presence in Bucharest, Romania)

Company

hirify.global is a global data MVNO providing enterprise-grade connectivity and IoT services across 200+ countries and 600+ mobile carriers.

What you will do

• Implement Temporal workflow activities in Go for HSS/PCRF adapters and Inventory updates.
• Design and build an Inventory Management Database in PostgreSQL, managing up to 30M records with optimized partitioning and indexing.
• Develop REST API endpoints and bulk import tooling for SIM record ingestion from vendors.
• Create and maintain comprehensive unit, integration, and end-to-end test suites for provisioning flows.
• Perform load and stress testing to simulate peak TPS against all systems.
• Integrate HSS sync and MNP hooks within the inventory database and support UAT activities.

Requirements

• 2–4 years of backend software development experience in production environments.
• Proficiency in Go (primary) or strong Java fundamentals with a willingness to transition to Go.
• Experience in REST API development and PostgreSQL table design and query optimization.
• Strong commitment to unit and integration testing as a core responsibility.
• Knowledge of event-driven architectures (RabbitMQ, Kafka, or Redis Pub/Sub) and basic Kubernetes.
• Fluent English proficiency.

Nice to have

• Experience with workflow engines such as Temporal, Camunda, or Apache Airflow.
• Background in Telecom or BSS/OSS, specifically SIM lifecycle and provisioning.
• Experience with load testing tools (k6, Locust, JMeter) and Docker.
• Knowledge of Python, Prometheus, or telecom protocols (Diameter, SS7, SMPP).

Culture & Benefits

• Fully remote work environment.
• Opportunity to work on an exciting greenfield platform.
• Professional growth within a reputable and growing international company.
• Collaboration with a highly professional team of specialists in an international setting.