20 beste vacatures voor de functie van api developer in pijnacker, zh (nieuwe medewerkers gezocht)

Python Developer (ZZP)
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Stage Webdevelopment (september 2026)
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Software Engineer
Certify360 EdTech Group —Rotterdam
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Java Developer
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Technical Team Lead - Platform Team
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Senior Full-stack PHP Developer Laravel / WordPress
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Full Stack Engineer - Platform Team
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Engineering Manager - CRM
TreeHouse —Rotterdam
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Support Engineer bij VCSW
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Technical Lead
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Vacature: Conversational Data Scientist - View vacancy
Bekijk bedrijf: Nationale-Nederlanden —Rotterdam
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Functioneel Tester
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Python Developer (ZZP)

Utilus
Rotterdam

Nu solliciteren

Vacaturegegevens

Fulltime
12 dagen geleden

Kwalificaties

CI/CD
Datamodellering
Relationele databases
Engels
Master
SQL
Pandas
Docker
Bachelor
Scrum
Schaalbaarheid
Agile
ICT
Communicatieve vaardigheden
Python

Volledige vacaturetekst

At Utilus we're looking for a Python Developer (ZZP) to join our team.

Full-time · Hybrid

What We Do

Utilus is a fast growing and highly ambitious software delivery company. We design, build, manage and operate highly scalable and complex software projects in the heart of the primary business processes of our clients, including Tennet, Eneco, Dura Vermeer and Nederlandse Loterij.

We work on sustainability by focusing mainly on assignments in the heart of the energy transition. We believe in the universal truth that true transformation is only attainable if our clients are prepared to Do the work. That’s why at Utilus, we help our clients to Do the work: by developing an approach to improve and renew essential IT, all while keeping the clients business running smoothly.

We take an honest and constructive approach, our two core values, to renewing and enhancing essential IT systems.

About The Job

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.

Key Responsibilities Python Developer

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.

What We Are Looking For

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

What We Offer

Challenging project in the energy sector
Start date: As soon as possible
Work week: 40 hours
Duration of the project: December 31, 2026 (with an option to extend)
Location: Hybrid (office in Rotterdam)

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.

Apply for the job

Do you want to join our team as our new Python Developer? Then we'd love to hear about you!

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api developer vacatures in pijnacker, zh

Python Developer (ZZP)

Technical Lead

Software Engineer Infrastructuur en Ontwerpautomatisering

Stage Webdevelopment (september 2026)

Remote Ruby on Rails developer

Ruby on Rails developer

Cloud – Backend Developer

Medior .NET Developer

Technical Team Lead - Growth Team

Software Engineer

Java Developer

Full Stack Engineer - Platform Team

Technical Team Lead - Platform Team

Senior Full-stack PHP Developer Laravel / WordPress

Full Stack Engineer - Platform Team

Engineering Manager - CRM

Support Engineer bij VCSW

Technical Lead

Vacature: Conversational Data Scientist - View vacancy

Functioneel Tester

Ik wil de nieuwste vacature-alerts ontvangen voor de functie van api developer in pijnacker, zh

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