> Markdown version of [/jobs/ext/353720-python-developer-zzp](https://www.wearedevelopers.com/jobs/ext/353720-python-developer-zzp). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Python Developer (ZZP) - **Company:** Utilus - **Location:** Rotterdam, Netherlands - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Clean Code Principles, Application Programming Interfaces (APIs), Business Logic, Code Review, Databases, Relational Databases, Database Queries, Python (Programming Language), Performance Tuning, Scrum Methodology, Systems Integration, Data Processing, Cloud Platform System, Delivery Pipeline, Database Performance, Backend, Database Migration, Containerization, Data Management, Api Design, Data Pipelines, Docker - **Published:** June 4, 2026 - **Apply:** https://nl.indeed.com/viewjob?jk=9a0d088b44e78831 ## About the Role Do you have experience in Scrum?, Do you have a Master's degree?, * Bachelor's/Master degree in IT (or related) field * Strong experience in Python development (5-8 years) * Expert-level Python development for backend systems, including API design, testing, data processing and Clean Code practices. * Strong SQL skills with a solid understanding of relational data modeling and performance optimization. * Experience working with cloud-based data platforms and data pipelines. * Your communication skills are excellent. You communicate the architectural design and technical solution with the client and the team and set clear goals to work towards * You have a strong problem-solving and ownership mindset. * You have experience with Agile/Scrum methodologies * Your communication skills in English are excellent (Dutch is plus) Nice-to-Have: * Experience with containerization and deployment workflows (e.g., Docker). * Experience with ORMs and database migration tooling. * Familiarity with data pipelines, analytics workflows, or data-intensive systems. * Experience in the energy domain ## Description The Python Developer works on external client projects to design and deliver robust software and data-processing solutions that support the client's business vision. The role includes developing, testing, and maintaining Python-based applications, services, integrations, and data workflows, with a focus on scalable, reliable, and high-quality solutions. While the engineer should have experience working with data platforms and pipelines, the role also involves broader Python engineering tasks such as API development, backend services, automation, system integrations, and application optimization. Working closely with architects, platform teams, and clients from early design stages, the engineer contributes to scalable software platforms and enables reliable, maintainable solutions across systems and business domains., Backend Services & APIs: Design, develop, and maintain scalable Python-based backend services, APIs, integrations, and automation solutions, with a focus on reliability, performance, security, and maintainability. Service, Data & Database Integration: Integrate backend services with databases, external systems, and data-processing components, including support for high-volume or time-series workflows where required. Design and optimize relational database schemas, queries, indexes, and data models to ensure scalability and reliability. Data Processing & Performance: Develop and maintain data-ingestion, transformation, validation, and processing workflows for analytics and operational use cases. Monitor, troubleshoot, and improve application, service, and database performance and operational reliability. Delivery & Collaboration: Contribute to CI/CD pipelines, deployments, testing, code reviews, monitoring, and operational excellence. Collaborate closely with other developers, platform teams, and stakeholders to deliver reliable, maintainable solutions., Please note that a take-home case study is part of the recruitment process (after a 30 min online pre-interview). The take-home case study requires 1-2 hours of your effort. It encourages the use of higher-level tools (e.g., pandas) and focuses on system design, abstraction, correctness of business logic, and testing. The outcome of the take-home case study, if positive, will be discussed during the 1st interview. Utilus is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. Please note that we only accept applicants that are located in the Netherlands at time of application. ## Related Videos - [Docker Compose: Rediscovered](https://www.wearedevelopers.com/videos/1978-docker-compose-rediscovered) - [Developing the Backend with Stefan Lingler, CTO at Shpock](https://www.wearedevelopers.com/videos/100360-developing-the-backend-with-stefan-lingler-cto-at-shpock) - [Kubernetes and Microservices with Multi-Model Databases](https://www.wearedevelopers.com/videos/382-kubernetes-and-microservices-with-multi-model-databases) - [Recruitment Reinvented: Bold strategies and the $10K signing incentive](https://www.wearedevelopers.com/videos/1068-recruitment-reinvented-bold-strategies-and-the-10k-signing-incentive) - [Docker build without Docker](https://www.wearedevelopers.com/videos/100114-docker-build-without-docker) - [Multilingual NLP pipeline up and running from scratch](https://www.wearedevelopers.com/videos/901-multilingual-nlp-pipeline-up-and-running-from-scratch) ## Related Articles - [The 13 Best Python Libraries for Developers in 2025](https://www.wearedevelopers.com/magazine/371-the-13-best-python-libraries-for-developers-in-2025) - [Best Companies in the Netherlands: Top 25 Companies in 2023 ](https://www.wearedevelopers.com/magazine/193-best-companies-in-the-netherlands-top-25-companies-in-2023) - [The Netherlands – Europe’s powerhouse for software development?](https://www.wearedevelopers.com/magazine/31-the-netherlands-europe-s-powerhouse-for-software-development) - [Software Developer Salary in The Netherlands [2023]](https://www.wearedevelopers.com/magazine/217-software-developer-salary-in-the-netherlands-2023) - [How to land a developer job in Amsterdam](https://www.wearedevelopers.com/magazine/36-how-to-land-a-developer-job-in-amsterdam) - [How to Find Tech Jobs in Amsterdam](https://www.wearedevelopers.com/magazine/279-how-to-find-tech-jobs-in-amsterdam)