Backend Developer

Job description

Many independent entrepreneurs are not made to invoice, submit receipts and make tax returns. That's why we have developed the tool that makes life easier and more convenient. In this way we give the entrepreneur back what it is best at: making beautiful things, express their passion or more generally - doing business! 

At Tellow we are growing hard as a young Fintech startup and we are looking for someone who grows full-time with us in every way possible. 

Motivation letter? It's almost 2020; a resume is more than sufficient.

Your Mission

Build, create and test a young product with upcoming new features and extensions. You help the future, because freelancers become the future. And so with us we are to push the boundaries of what is possible nowadays. 

Your Job
Tellow is growing rapidly and will expand even more with new specifications, functions and products. There is plenty of room to build a new product from the ground up with your voice, view, knowledge and expertise. You are creative in finding scalable solutions that are reusable. Within Tellow you will work on optimizing bank links to transactions and payment requests. We also use SNS to send SMS and SQS to process transactions 1 for 1. Ultimately, it would be very nice if AWS terms such as RDS, SQS, S3 and EC2 would be familiar to you. 

We offer you

  • Work in a team that encourages learning and self-development

  • Working in a start-up atmosphere: freedom, autonomy and dynamics

  • The chance to develop a young product to a higher level

  • A full-time job with a competitive salary

  • A pleasant working environment with a very driven (and young) team

  • Growth opportunities

  • 26 sunny or snowy holidays

  • A travel allowance

  • An attractive pension scheme

  • A training budget to ensure your personal growth

  • Working in the heart of Utrecht (at the station in the WTC)

  • Tasty lunch, with desserts!
  • Proper equipment (MacBook Pro and LG Ultrawide monitor).
  • Free beverages: caffeine fix or Friday celebration beer.
  • Extensive coaching and attention to personal development.
  • An open working atmosphere, in which you can give and receive honest feedback.


As our first data driven backend developer’ (future lead?) ....

  • You will be writing and designing services mainly in our backend (and frontend if you want to), and keep an eye on tooling and methods to make sense of all the (big) data we have.
  • You probably have a taste for big data, machine learning and a grasp on analysis of patterns and such.
  • You want to work with: a broad set of APIs, PHP, Python, Node, JavaScript, MySQL, Looker, Amplitude, Stitch, and/or whatever tooling a data analyst might need. We are very pragmatic about the tools you use; all good if it just works.
  • You will be assisting our senior backend developer with all things development and learn more about our data models and actual end-user product usage.
  • The position is directly available at the headquarter office in Utrecht and preferably full-time.
  • You will join a team of young tech enthusiasts and fun colleagues, offering the opportunity to work with the latest technologies, standards and frameworks. We embrace an open culture and we know how to balance work and fun. We want you to be easygoing, free and responsible for your work, with natural interest in what we are creating.

Required skills & experience:

  • Have 3+ years of experience in backend development and/or data analysis.
  • Use data from REST APIs to power visualizations within web applications.
  • Collaborate with team members, clients, and other stakeholders to review and refine data dashboards and models.
  • Create visualizations and dashboards to help tell stories with data.
  • You’re smart and have some way to prove it.
  • Take initiative and are always looking to improve yourself (learning).
  • Have excellent English and/or Dutch verbal and written communication skills.

Why Tellow? 
With us, bookkeeping is a party. This, we radiate from the inside out. This also means that the company culture and atmosphere are based on this. We are a spin-off from Rabobank from their incubator. At first Rabobank customers could only participate, but we will be open to all independent entrepreneurs in the very near future. This means high growth and one big adventure. 

If you find this interesting, please do not hesitate to apply - or contact us if you have any questions/remarks.