Senior Backend Developer – (Golang, Data & Integrations)

At i3D.net, we provide world-class global coverage with one of the most interconnected networks in the world. Our solutions focus on low latency, zero packet loss, and unmatched scalability, enabling seamless experiences for millions of users worldwide. With dedicated support, bespoke solutions, and cutting-edge technology, we deliver reliable, cost-efficient infrastructure that empowers game developers and businesses to scale effortlessly. Partnering with major names like Nvidia, DuckDuckGo, Discord, and Ubisoft, we are shaping the future of gaming and network technology.

Why your role matter

sYou’ll own how business and customer data flows across the organization, with a focus on billing, product, and sales data. Working at the intersection of engineering, finance, and product, you’ll build the foundation that makes data reliable and auditable, removing manual reconciliation, stabilizing migrations, and ensuring billing flows and pricing models behave predictably at scale

.
This is a backend engineering role, not a traditional data or ETL setup. Using Go, you’ll build services and APIs that expose billing logic and connect systems like HubSpot and NetSuite, shaping how data moves across the organization in productio

n.You’ll work on greenfield architecture and database design, defining customer data models, system relationships, and asset structures that determine what customers can buy and how it is invoiced, using SQL where needed for validation and reconciliation. You’ll be part of a team of five developers, working closely with a Business Analyst and owning these flows end to en

d.
What you’ll be do

• ingOwn data migrations and pipelines: Design and implement ETL flows to move billing, contract, and asset data into target systems with full validation and rollback capabil
• ityModel and transform complex data structures: Analyze legacy databases, define transformation logic, and ensure consistent, idempotent data handl
• ingBuild scalable backend services in Go: Develop services and abstraction layers that expose billing logic and enforce business rules, while leveraging the right tools (e.g. SQL, Python) for data transformations and migrati
• onsStandardize product and pricing models: Define reusable product and offer structures that work consistently across systems and integrati
• onsIntegrate external systems into billing flows: Connect ERP, CRM, payment, and inventory platforms with secure, reliable data exchange and reconciliat
• ionDevelop robust APIs and integrations: Build REST and gRPC APIs with strong validation, logging, retry logic, and monitor
• ingAutomate migrations and operational processes: Create tooling, scripts, and runbooks that support repeatable migrations and controlled cutov
• ersImprove observability and incident response: Implement monitoring, dashboards, and alerting to quickly detect and resolve data or integration iss
• uesCollaborate across teams: Work closely with Finance, Product, and Business Analysts to refine business rules and validate outp
• utsMentor and contribute to architecture decisions: Share knowledge, review code, and help shape the long-term billing architect

ure
Tech s

tackAt i3D.net, you’ll work w

• ith:Languages: Golang (primary), PHP (legacy),
• .NETInfrastructure & Tools: Docker, Kubernetes, Ansible, GitHub Act
• ionsDatabases: Mar
• iaDBPractices: Test-Driven Development (TDD), CI/CD pipelines, Agile methodologies - we follow a "you build it, you deploy it, you support it" philos
• ophyIDE: Choose the development environment that you're most comfortable

with
What success looks like in the first

• yearYou’ve delivered reliable migration plans and scripts with rollback strategies, automated validation, and clear verification repo
• rtingYou’ve defined and documented data mappings and transformation rules, including legacy schemas, business logic, and edge
• casesStandardized product, pricing, and billing models are implemented and consistently used across systems and integra
• tionsCore billing APIs, services, and integrations are live, including payment flows and inventory sync, with validation, logging, and auditab
• ilityMonitoring, dashboards, and runbooks are in place, giving clear insight into data quality, system health, migrations, and incident han

dling
Your p

• rofileBackend engineering: 5+ years of building production systems in Go, .NET, or PHP and comfortable using Go as the main la
• nguageData and SQL: Experience with SQL, MariaDB, or Postgres and working with complex s
• chemasMigrations and ETL: You’ve designed transformation pipelines, written idempotent scripts, and built validation t
• oolingAPIs and integrations: Built and integrated REST or gRPC APIs with authentication patterns like OAuth2
• or JWT3rd party integrations: Connected systems such as ERP, CRM, payment providers, or inventory pla
• tformsInfrastructure and automation: Comfortable with Docker, CI/CD pipelines, and tools like Terraform or A
• nsibleTesting and quality: Write unit, integration, and contract tests to ensure relia
• bilityOwnership and communication: Take end-to-end responsibility and work effectively with technical and nontechnical stakeh
• oldersRemote vs Onsite: This is a hybrid position with some onsite work required at our Rotterdam office. You are either already in the Netherlands or open to relocating here, and we provide relocation services to support your move (a valid EU work permit is neces

sary).
Why j

• oin us?High ownership and real technical depth: You’ll design systems, not just implement them, and take full ownership from idea to prod
• uction.Make an Impact: Work on core projects that power global gaming and tech giants like U
• bisoft.Hybrid Work Setup: Enjoy the flexibility of a hybrid role with a work-from-home budget and top-tier
• tools.Competitive Perks: Enjoy great pay, shift bonuses, an annual bonus, 25 vacation days (excluding national holidays), travel allowance, and a premium-free p
• ension.Skill Development: Level up with career guidance and education reimbur
• sement.Gaming Perks: Get lifetime access to Ubisoft’s game
• libraryStay Active: Use our in-house gym in Rotterdam or unwind in the game and music