Crystalloids · Standplaats: Rotterdam · 23 mei 2026
Cloud & Data Engineering Traineeship
Start Your Career as a trainee
Start Your Career in Cloud, Data & Software Engineering
Are you a final-year student or a recent graduate looking for real-world experience before starting your professional career? Or are you a professional interested in switching your tech stack, field, or specialization and gaining hands-on experience in cloud and data technologies?
This program is a great opportunity to explore your career direction, gain practical experience during the summer period, or prepare yourself for a junior role in a consulting environment.
You will not only learn technologies but also how to apply them in real business situations, working in teams that build data-driven solutions for modern organizations.
Our Traineeship Vision
The goal of the Crystalloids traineeship is to create a safe learning environment where you can develop real engineering skills before stepping into client-facing consulting work.
During the traineeship, you will work on internal projects and low-risk environments specifically designed for learning. These projects allow you to experiment with technologies, practice engineering concepts, try different approaches, and learn from mistakes.
We believe that the best way to grow as an engineer is through hands-on experience. That means building solutions, testing ideas, encountering challenges, and improving them together with experienced mentors.
Throughout the traineeship, you will:
Making mistakes is part of the process. What matters most is curiosity, learning, and continuous improvement.
By the end of the traineeship, you will have gained practical experience, confidence in modern technologies, and a clearer understanding of how engineering teams build real-world data and cloud solutions.
As part of the traineeship track, you can earn a Google Certificate (Associate or Professional). We cover the exam costs and provide the necessary learning material, the rest is up to you.
Traineeship Crystalloids KacperKacper, software development traineeship
"I chose Crystalloids to learn more about Cloud Engineering. During my traineeship, I had a chance to work on multiple projects ranging from writing an API to automating the whole hiring stream. I became proficient in many GCP services, Terraform, Apache Airflow and much more."
Depending on your interests and background, you can apply for one of the following traineeship tracks.
Software Development Traineeship
Focus on backend development and building scalable applications in the cloud.
You will learn how to:
With the knowledge gained during the traineeship, you can pursue the following Google certifications.
Associate Cloud Engineer
Good foundational certification covering deploying, managing, and operating applications on Google Cloud.
Focuses on building scalable and secure cloud-native applications, APIs, and services.
For trainees interested in system architecture and designing scalable cloud systems.
Focus on transforming data into reliable insights and building modern analytics platforms.
You will learn how to:
With the knowledge gained during the traineeship, you can pursue the following Google certifications.
Associate Cloud Engineer
Helpful for understanding how to operate data workloads in GCP.
The most relevant certification for designing data pipelines, transforming data, and building analytics platforms.
GenAI Traineeship
Focus on modern data interaction and intelligent applications.
You will design an agent-based architecture deployed on GCP, including:
With the knowledge gained during the traineeship, you can pursue the following Google certifications.
Associate Cloud Engineer
Helps understand the infrastructure needed to deploy AI systems.
Professional Machine Learning Engineer
Covers building, deploying, and maintaining ML models on Google Cloud.
Professional Generative AI Engineer
Focused on LLMs, generative AI architectures, and AI-powered applications.
Who Is This Traineeship For
This traineeship is suitable for:
Curiosity, motivation, and the ability to learn quickly are what matter most.
Plan Your Traineeship in Advance
You can complete the recruitment process up to 6 months before your start date . This allows you to reserve your traineeship spot and plan it around:
The first intake interview in the office (45 minutes).
Practical assignment in the office to showcase skills.
Your Offer and First Day Planning
If your skills are enough for a Junior position, we will go with this approach. If you still need mentorship and a learning curve, we propose the traineeship.
If the traineeship is successful, we will be happy to offer you a Junior Engineer position at Crystalloids.
If a full-time position is not immediately available, we will gladly provide you with a strong reference and recommendation to support your career development.
Our goal is to help you take the next step in your professional journey.
Reside in the Netherlands
Fluent in English (spoken and written)
Motivation to learn and grow in a technical environment
Working hours: 40 hours per week
Location: Rotterdam office
Mentorship: direct guidance from experienced engineers
Equipment: laptop provided
Travel reimbursement: public transport in the Netherlands
Trainership compensation: 350,- euros net per month
Interns at Crystalloids
Dive into the stories of our interns.
Discover how it is to be an intern at Crystalloids.