Senior Full Stack (Python) Software Engineer

The Hague | Hybrid/Remote
Full time
Start date:

About the job

As a scale-up, we are looking for a person to join our team that can help scale the Engineering team. We are growing at such a strong pace which requires us to hire someone to keep up with the growing demand for our tech-for-good, blockchain product.

You’ll be exploring answers to questions like:

👉 How can we assure optimal stability and security while sustaining swift development cycles?
👉 How can we improve our system understanding and development through observability and other tools?
👉 How do we establish and manage a robust and maintainable codebase while keeping a great product experience for the user?

About Circularise

Company Description

Circularise is a supply chain traceability start-up founded in The Netherlands in 2016. We believe that end-to-end traceability holds the key to overcoming major challenges that society faces in areas such as Circular Economy, Environmental Pollution and Carbon Emissions. Therefore, it’s our mission to bring traceability to global supply chains and to accelerate the world’s transition to a Circular Economy.

Circularise is disrupting industries by changing how companies trace their products and materials and share information about them, enabling sustainable practices at an unprecedented level. We achieve that with a blockchain-based open protocol that enables sharing of information about products and materials while retaining privacy oversensitive information.

We are not your typical startup and would love to invite you to get involved.


We take a structured, objective approach to salary-setting based on market information, our compensation strategy, and your experience and capability as assessed through our interview process.

Perks & Benefits

  • Circularise has an open, informal and growth-oriented culture. A place where you get a lot of freedom and responsibility right away and your opinion counts from day one. You get to work with an amazing group of people. We offer you an environment in which you can grow and your impact will be of great value.
  • Flexibility: This is a hybrid or remote position with flexible hours alongside an amazing diverse team.
  • Travel allowance for your commute.
  • 25 paid vacation days (+7 official Dutch holidays) - if living in the Netherlands
  • Help shape a fast-growing scale-up into becoming the next Tech For Good unicorn.
  • Be part of a new industry standard
  • A place to work where your input, creativity and personality is celebrated;
  • All the tools you need to be a high performer including state of the art  MacBook to work your magic;
  • We’re a hybrid company, but our HQ is located in The Hague (in case you miss your colleagues)
  • Equity: In addition to the salary you will get to own a piece of Circularise as we also provide a generous equity package.
  • Cultural diversity: An international environment with a diverse team of over 20 nationalities. Our development team, comprising multiple nationalities, operates across various European time zones, thereby fostering a rich, multicultural work environment
  • Pension contribution: Circularise contributes 5% on top of your annual gross salary to your pension.
  • Alleo benefits: When you join us, you will get access to a monthly budget which you can spend in our flexible benefits app, powered by Alleo.
  • Learning and development budget: Each employer is allocated a budget of €1000 to upskill themselves through programs of their choice (after 6 months of working).

What you'll be doing

Front-end Development:

  • Clear Output: User interfaces (UI) that are visually appealing, intuitive, and responsive across different devices and screen sizes.
  • Specific Tasks:
    • Designing and implementing UI components using HTML, CSS, Styled Components, and JavaScript.
    • Integrating front-end (React) to build dynamic user interfaces.
    • Optimizing UI performance and user experience.

Back-end Development:

  • Clear Output: Robust server-side logic and APIs that power the application's functionality and data management.
  • Specific Tasks:
    • Developing server-side applications using programming languages such as  Python or Node.js.
    • Creating and managing databases using SQL or NoSQL technologies.
    • Implementing RESTful APIs for communication between the front end and back end.

Database Management:

  • Clear Output: Well-designed databases with efficient data storage, retrieval, and management capabilities.
  • Specific Tasks:
    • Designing database schemas and data models to meet application requirements.
    • Writing and optimizing database queries for performance.
    • Ensuring data integrity, security, and compliance with relevant regulations.

Deployment and Infrastructure:

  • Clear Output: Deployed and scalable applications running in production environments with high availability and reliability.
  • Specific Tasks:
    • Setting up and configuring servers, databases, and other infrastructure components.
    • Deploying applications to cloud platforms like Google Cloud Platform.
    • Implementing continuous integration/continuous deployment (CI/CD) pipelines for automated deployment and testing (GitHub/GitLab).

Testing and Debugging:

  • Clear Output: Reliable and bug-free applications that meet functional and performance requirements.
  • Specific Tasks:
    • Writing unit tests, integration tests, and end-to-end tests to ensure code quality and reliability.
    • Debugging and troubleshooting issues identified during testing or in production environments.
    • Implementing monitoring and logging solutions to track application performance and detect errors.

About you

Personal aspects

  • User-centric mindset: Understanding and empathy towards our users, approaching projects with a user-driven, product-focused mindset.
  • Remote-friendly: The capability to work well in remote or distributed environments
  • Humility: Having the humbleness to ask for help when encountered with roadblocks.
  • Teamwork & communication: Effective collaboration and communication skills, adaptable to varying team dynamics. Regular, timely updates to both technical and non-technical team members about progress and arising issues.
  • Self-driven: A proactive nature in completing tasks and overcoming obstacles.
  • Critical thinking & discernment: Strong ability to analyse requirements and solutions critically, recognise when to implement less conventional approaches, and prioritize tasks effectively.

Technical expertise

Must have:

  • Senior level with Python and/or React
  • Experience working in a small company/start-up
  • Ability to work Fullstack on all areas of the application

Nice to have:

  • Experience in NextJS
  • Experience in GCP
  • Experience in B2B
  • Experience in ExpressJS

Recruitment process

1. Initial introductory call (1 hour)

2. Take home assignment

3. Technical live interview (90 minutes)

4. Cultural fit interview (1 hour)

5. (Optional) Founder interview (30 minutes)

Circularise is an equal opportunity employer. We encourage people from all backgrounds to apply. All employment decisions are made without regard to race, colour, national origin, ancestry, sex, gender, gender identity or expression, sexual orientation, age, genetic information, religion, disability, medical condition, pregnancy, marital status, family status, veteran status, or any other characteristic protected by law.

Everyone belongs at Circularise

We strive to hire people from all walks of life. Circularise is committed to providing equal opportunity for all employees and candidates without regard to race, colour, religion, national origin, sex, age, marital status, sexual orientation, disability, or any other characteristic protected by law. Each person is evaluated on the basis of personal skill and merit. We are continuously working hard to develop and build a culture of inclusivity & diversity.

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Notice to recruiters, agencies & staffing companies
Circularise B.V. and its affiliates (“Circularise”) has an internal recruiting department. Agencies are hereby specifically directed not to contact Circularise employees directly in an attempt to present candidates – Circularise's recruiting team or other authorised Circularise personnel must present all candidates to hiring managers.
Full recruiter policy available here.