QuantSpark is hiring a

Front-end Developer (React.js)

London, United Kingdom

QuantSpark is an innovative boutique strategic analytics consultancy based in London. Our hybrid team combines the best of strategy consulting, data analytics and product development to deliver creative and impactful solutions to public and private sector clients.

QuantSpark pioneers the strategic application of data science through software solutions. Our work spans a broad range of clients from the private and public sectors including one of the UK's largest supermarkets, a fashion retailer, a strategic communications agency, Google, Young Enterprise, and the United Nations.

We're a small but super-effective interdisciplinary team so in particular we look out for people who have entrepreneurial flair and an ability to understand what's important for our clients.

Our recent projects include

● analysing 1bn+ of transactions to help a supermarket decide how to allocate their store space

● developing terrorist content algorithms to enable internet platforms to tackle terrorist propaganda

● creating a location intelligence model to inform social impact communications campaigns

What the role is about:

As a Frontend/UI Developer, you will build websites or applications that our clients use to better understand the data and models we have assembled for them. This means getting to the bottom of what is needed, designing and developing a good solution, and testing and validating that it works as expected.

QuantSpark being a small and smart company, you will be able to bring in your own expertise and ways of doing things, as well as learning a tremendous amount as part of your work, from colleagues and via training. You will also be able to switch between teams and thus work on a range of projects, including pro-bono ones.

You could eventually become a Frontend expert, learn more about automated testing or DevOps, move into Full-Stack development, or get started on Strategic Consulting if that’s where you want to take your career.


We welcome applicants who can show technical ability, creativity, good communications, grit and a desire to learn. More specifically for this role, you will need the following skills:

- Experience with JavaScript ecosystem, specifically with React.js, Redux, Webpack, HTML, CSS

- Unit testing, TDD

- Code management (Git, Bitbucket)

- A keen eye for good user interface design and user experience.

As a bonus, you would also have:

- Prototyping experience (Sketch/Adobe XD preferable)

- Wireframe experience (e.g. Balsamiq)

- Experience of designing a web app architecture


  • £30k- £50k salary (dependent on experience)
  • 25 days holiday, plus Bank Holidays
  • Pension contribution scheme
  • Social impact / pro bono data science and development projects
  • Monthly training & conference budget
  • Cycle to work scheme
  • Top-notch kit with high-end MacBook and tools
  • Monthly socials and dinners
  • Private Healthcare

We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, colour, national origin, gender, sexual orientation, age, marital status, or disability status.