Start as a Trainee

4–6 months | Rotterdam, The Netherlands Cloud & Data Engineering Traineeship 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. Apply here 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: work on practical engineering use cases learn modern cloud and data technologies receive guidance from experienced developers and consultants experiment with different tools and approaches develop problem-solving skills in a supportive environment 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 Tracks 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 Develop backend services and APIs Work with object-oriented programming languages Build cloud-native applications Implement engineering best practices Work within a structured software architecture Google certifications you can pursue Associate Cloud Engineer Good foundational certification covering deploying, managing, and operating applications on Google Cloud. Professional Cloud Developer Focuses on building scalable and secure cloud-native applications, APIs, and services. Professional Cloud Architect For trainees interested in system architecture and designing scalable cloud systems. Analytics Engineering Traineeship Focus on transforming data into reliable insights and building modern analytics platforms. You will learn how to Build and maintain data pipelines Transform and model data Create reliable data structures for analytics Perform deep analysis of data to generate insights Support business decision-making through data Google certifications you can pursue Associate Cloud Engineer Helpful for understanding how to operate data workloads in GCP. Professional Data Engineer 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: The agent architecture A shared agent space for coordination and context sharing Specialized agents with clearly defined responsibilities Integration with operational data sources Chat or ticket-based interaction interface Google certifications you can pursue 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. “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.” Kacper Software development traineeship Who Is This Traineeship For This traineeship is suitable for: final-year university students recent graduates students looking for a summer hands-on experience individuals exploring careers in cloud, data, or software engineering 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: graduation thesis work summer holidays Recruitment steps 01 The first intake interview in the office 45 minutes. In-person 02 Practical assignment in the office To showcase skills. In-person 03 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. Career Opportunity 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 EU citizenship required Fluent in English (spoken and written) Motivation to learn and grow in a technical environment

Duration: 4–6 months 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 Apply here Send us your CV and a motivation letter, and we’ll take it from there. First name * Last name * Email * Phone * CV * PDF, DOC, DOCX · maximaal 5 MB Cover letter * PDF, DOC, DOCX · maximaal 5 MB How did you hear about this job? * Crystalloids site Indeed LinkedIn JouwICTvacature Recruiter Event Friend/Family I accept the Privacy Statement . I agree to be contacted to fulfil my request. Bedrijfsnaam Apply Sending…