Senior Front End Developer

  • JS Frontend Engineer
  • Permanent
  • London, UK

We’re looking for an outstanding Senior Front End Engineer who knows code and has proven-experience of writing it, as well as a good eye for design and can create engaging experiences that people will love to use.

You will be working in an incredibly ambitious, diverse company that is passionate about its goal: creating a global standard for talking about location.

At what3words, we're proud of our tech stack. We have built a massively scalable, microservices-based architecture, based around Kubernetes on AWS. You'll be exposed to technologies such as ReactJS, Docker, Redis, AWS Lambdas, Prometheus, Grafana, Python, Athena, BigQuery, Java, Scala, C++, and Swift.

This a great opportunity to join an innovative, fast-growing Agile team, at one of the most exciting times in this company's life.


This role will focus primarily on the development of our map site, corporate site, developer portal and playgrounds, but we’re always looking for new platforms and products to build, opening what3words up to as many users as possible. This includes various voice assistant platforms and in-house tools & demos to assist our sales and marketing teams. You will also work closely with our product and UX teams, receiving and inputting on designs and feasibility checks, and bringing fresh ideas to make what3words a better solution.

You will have good experience of building gorgeous user interfaces on top of RESTful web APIs, using React, JavaScript, CSS. You will be able to work independently, self-motivate, collaborate well with others and keep calm under pressure.

What we expect:

  • Deep expertise in ES6, TypeScript, React, HTML, CSS
  • Excellent communication skills in verbal and written English.
  • A passion for software engineering and continuous learning.
  • Strong track record of building responsive sites for desktop, tablet and mobile.
  • Experience of Agile working environments.

Bonus points for:

  • Knowledge of Google Maps or Leaflet, GIS systems, AWS, Kubernetes, Hubspot or similar CRM systems
  • Experience of Agile working environments.
  • Experience with voice development e.g. Alexa, Google Assistant
  • PHP knowledge

Tier 2 sponsorship available for candidates requiring a UK work visa


We offer the following benefits to all permanent employees of what3words:

  • 25 days holiday
  • Share options
  • Pension
  • Bupa Healthcare + Babylon Health
  • Bupa Rewards
  • Cycle to work
  • VDU eye tests
  • Life Assurance
  • Free breakfast & snacks
  • Birthday vouchers
  • Weekly lunch & learn sessions
  • Regular team lunches & team socials
  • Sports and hobbies clubs