London, UK / Tel Aviv, Israel

Senior Frontend Developer (React)


Our tech stack:

Cloud: AWS, Terraform

Backend: Python, FastAPI, Postgres, Kafka, Kubernetes, Airflow

Frontend: React, Mapbox


A proven experience that we are looking for:

  • At least 3 years of experience in developing code using React
  • HTML, CSS, JavaScript, DOM, React.js and its core principles.
  • RESTful API
  • Developing web applications (not just websites)
  • Common front-end development tools such as Webpack, Storybook, Git
  • Mapping platforms, preferably Mapbox or Leaflet.
  • Developing responsive web applications
  • UI Testing, performance optimisation and browser-based debugging.
  • Building reusable components and front-end libraries for future use.
  • Ability to understand business requirements and translate them into technical requirements.


Our interview process:

1) Introduction call (45 min)

2) Technical interview (90 min)

3) Meet our management/founders

Valerann is a fast-growing Smart Cities startup, based in London and Tel Aviv. We work with the world’s largest infrastructure operators to transform roads into data-generating assets. Through our work and partnerships, we look to reshape the way operators use data to make traffic safer, more efficient, and support autonomous vehicles. If you want to be part of a dynamic and award-winning start-up and help shape the future of mobility - join Valerann!

We are developing a traffic management solution that is based on a unique vehicle-level data fusion. We ingest streams of data (IoT, Video, Social feed) into our AWS cloud environment; we run machine learning algorithms to identify various traffic issues and feed them back in real-time to vehicles and traffic control centres. We have made huge progress, but we need your help to move to the next level.

We are looking for a talented, experienced and hard-working full stack developer. Your primary focus will be developing and improving our control centre dashboard which is in use in Europe, the US and around the world. You will develop user interface components and implement them following well-known React workflows (such as Redux, Storybook). Additionally, you will develop our API using FastAPI and deploy it to AWS or Azure.

To apply please send your CV's to: