Senior Backend Developer – (Golang, Data & Integrations)

i3D.net - A Ubisoft Company; Rotterdam; Hybrid; EUR 70,000 - 110,000; Full time

Benefits offered by this job

Hybrid work model

Relocation support

Annual bonus

Travel allowance

Gym access

Job summary

i3D.net - A Ubisoft Company in Rotterdam is hiring a Senior Backend Developer. You’ll own how billing, product, and sales data flow across the org, building Go-based services and APIs that connect systems like HubSpot and NetSuite.

You’ll design data models, migrations, and scalable backends while collaborating across Finance, Product, and Business Analysts. You’ll work on greenfield architecture, data pipelines, and pricing models, with a hybrid work setup and relocation support.

Qualifications

• Backend systems in Go with production-grade reliability.
• Experience with SQL databases and complex schemas such as MariaDB or PostgreSQL.
• Design and implement data migrations, ETL pipelines, and validation tooling.
• Build and integrate REST or gRPC APIs with authentication patterns.
• Connect ERP, CRM, payment, and inventory platforms to billing/data flows.

Responsibilities

• Own data migrations and pipelines: design ETL flows with validation and rollback.
• Model and transform complex data structures across systems.
• Build scalable backend services in Go exposing billing logic and APIs.
• Integrate external systems into billing flows (ERP/CRM).
• Develop robust APIs with validation, logging, and monitoring.
• Collaborate with Finance, Product, and Business Analysts.

Skills

Go

Backend

SQL

MariaDB

PostgreSQL

ETL

APIs

Integrations

Migrations

Data modeling

Tools

Docker

CI/CD

Terraform

Ansible

Job description

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 likeNvidia, DuckDuckGo, and Ubisoft, we are shaping the future of gaming and network technology.

Why your role matters

You’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 production.

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 end.

What you’ll be doing

Own data migrations and pipelines: Design and implement ETL flows to move billing, contract, and asset data into target systems with full validation and rollback capability

Model and transform complex data structures: Analyze legacy databases, define transformation logic, and ensure consistent, idempotent data handling

Build 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 migrations

Standardize product and pricing models: Define reusable product and offer structures that work consistently across systems and integrations

Integrate external systems into billing flows: Connect ERP, CRM, payment, and inventory platforms with secure, reliable data exchange and reconciliation

Develop robust APIs and integrations: Build REST and gRPC APIs with strong validation, logging, retry logic, and monitoring

Automate migrations and operational processes: Create tooling, scripts, and runbooks that support repeatable migrations and controlled cutovers

Improve observability and incident response: Implement monitoring, dashboards, and alerting to quickly detect and resolve data or integration issues

Collaborate across teams: Work closely with Finance, Product, and Business Analysts to refine business rules and validate outputs

Mentor and contribute to architecture decisions: Share knowledge, review code, and help shape the long-term billing architecture

Databases: MariaDB

Practices: Test-Driven Development (TDD), CI/CD pipelines, Agile methodologies - we follow a "you build it, you deploy it, you support it" philosophy

IDE: Choose the development environment that you're most comfortable with

What success looks like in the first year

You’ve delivered reliable migration plans and scripts with rollback strategies, automated validation, and clear verification reporting

You’ve defined and documented data mappings and transformation rules, including legacy schemas, business logic, and edge cases

Standardized product, pricing, and billing models are implemented and consistently used across systems and integrations

Core billing APIs, services, and integrations are live, including payment flows and inventory sync, with validation, logging, and auditability

Monitoring, dashboards, and runbooks are in place, giving clear insight into data quality, system health, migrations, and incident handling

Your profile

Backend engineering: 5+ years of building production systems in Go, .NET, or PHP and comfortable using Go as the main language

Data and SQL: Experience with SQL, MariaDB, or Postgres and working with complex schemas

Migrations and ETL: You’ve designed transformation pipelines, written idempotent scripts, and built validation tooling

APIs and integrations: Built and integrated REST or gRPC APIs with authentication patterns like OAuth2 or JWT

3rd party integrations: Connected systems such as ERP, CRM, payment providers, or inventory platforms

Infrastructure and automation: Comfortable with Docker, CI/CD pipelines, and tools like Terraform or Ansible

Testing and quality: Write unit, integration, and contract tests to ensure reliability

Ownership and communication: Take end-to-end responsibility and work effectively with technical and nontechnical stakeholders

Remote 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 necessary).

High ownership and real technical depth: You’ll design systems, not just implement them, and take full ownership from idea to production.

Make an Impact: Work on core projects that power global gaming and tech giants like Ubisoft.

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 pension.

Skill Development: Level up with career guidance and education reimbursement.

Gaming Perks: Get lifetime access to Ubisoft’s game library

Stay Active: Use our in-house gym in Rotterdam or unwind in the game and music rooms.

Work From Home Budget

Remote is the new office. Optimize your home office space to suit your comfort and needs.

Annual Bonus

Get your hard work rewarded with our performance-based bonus of up to 12% of your yearly salary.

Travel the Globe

With offices, data center PoPs, and customers scattered across the globe, you'll be sure to see a city or two.

Vitality @ Work

Keep your mind and body in top shape with our company-funded programs. Quit smoking, get a health check, personal training, or mental coaching.

Workout in our Gym

A fully equipped gym in our Rotterdam office equals deadlifts, squats, and the treadmill for breakfast, lunch, or dinner.

Personal Development

The sky is the limit. We offer you all the room to grow. With our unlimited educational fund, w e've got you covered for everything from books or part‑time courses to a whole Master’s degree.

Get Free Games

Access to the entire Ubisoft backlog for life comes with the job! You'll never be bored again.

Fantastic Bar

Views, 50 specialty beers, french fries, Friday afternoon drinks, and an all‑you‑can‑eat candy buffet.

What we do

Low latency is our mission! In 2002 we set out to improve online experiences for gamers. Today, we translate our hosting innovations to various industries, but gaming is still in our DNA. And as of 2019, we are part of the Ubisoft family! We build out our network presence in data centers across the globe – from Madrid to Mumbai, Amsterdam to Seattle, and everything in between – bringing content closer to the users.

Our team works hard on everything related to running our privately owned premium network, from opening new points‑of‑presence, setting up peering relationships, developing integral products like anti‑DDoS protection, and serving our customers with expert help and advice. Finally, we play even harder, in our office gym and bar, and with our lifetime access to Ubisoft games.

• A challenging and dynamic job in an international company
• A competitive salary (depending on education, knowledge, and experience)
• 25 vacation days (excluding national holidays)
• Travel allowance & work‑from‑home budget
• All the hardware and software you need to perform, including a laptop
• Career guidance including remuneration of relevant education, courses, and training
• A modern office in a prime location with open workplaces
• Free access to Ubisoft games through Ubisoft Connect
• Free use of the in‑house gym

i3D.net is an equal opportunity employer. At i3D.net, we believe in a fair and equal workplace for all and foster an environment that is inclusive as well as diverse. We do not discriminate based on color, race, religion, sexual orientation, gender (identity), age, mental or physical abilities, or other characteristics. We believe that employees thrive when they can be comfortable and be themselves! We encourage candidates to apply knowing that they will be considered solely on their merits and qualifications.