Senior Backend Engineer - Go, Data & Integrations (Hybrid)

WebHosting; Rotterdam; Hybrid; EUR 80,000 - 120,000; Full time

Benefits offered by this job

Great pay and bonuses

25 vacation days

Travel allowance

Pension (premium-free)

Job summary

i3D.net is seeking a Senior Backend Developer to design and implement Go-based services for billing, data flows, and integrations with ERP/CRM systems. You will own data migrations, modeling, and API design in a hybrid work setup at our Rotterdam HQ.

You’ll collaborate with Finance, Product, and Business Analysts to ensure reliable, auditable data in production. You will work on greenfield architecture, data models, and scalable services, using SQL where needed and ensuring robust validation,

Qualifications

• 5+ years building production systems in Go, .NET, or PHP.
• Experience with SQL databases like MariaDB or Postgres.
• Familiarity with ETL, migrations and data pipelines.
• Experience with REST or gRPC APIs and integrations.
• Hybrid/Onsite in Rotterdam with relocation support.

Responsibilities

• Own data migrations and pipelines with full validation and rollback.
• Model and transform complex data structures across systems.
• Build scalable backend Go services exposing billing logic.
• Standardize product and pricing models across integrations.
• Integrate ERP, CRM, payment, and inventory platforms.
• Develop robust REST and gRPC APIs with validation and logging.
• Improve observability with monitoring and alerting.

Skills

Go

Backend engineering

REST APIs

Data migrations

SQL queries

Data modeling

Tools

Docker

Terraform

Ansible

CI/CD

MariaDB

PostgreSQL

Job description

i3D.net is seeking a Senior Backend Developer to design and implement Go-based services for billing, data flows, and integrations with ERP/CRM systems. You will own data migrations, modeling, and API design in a hybrid work setup at our Rotterdam HQ.

You’ll collaborate with Finance, Product, and Business Analysts to ensure reliable, auditable data in production. You will work on greenfield architecture, data models, and scalable services, using SQL where needed and ensuring robust validation,