Front End Engineer

Ravelin
London

Who are we?

Hi! We are Ravelin! We're a fraud detection company using advanced machine learning and network analysis technology to solve big problems. Our goal is to make online transactions safer and help our clients feel confident serving their customers.

And we have fun in the meantime! We are a friendly bunch and pride ourselves in having a strong culture and adhering to our values of empathy, ambition, unity and integrity. We really value work/life balance and we embrace a flat hierarchy structure company-wide. Join us and you’ll learn fast about cutting-edge tech and work with some of the brightest and nicest people around - check out our Glassdoor reviews.

If this sounds like your cup of tea, we would love to hear from you! For more information check out our blog to see if you would like to help us prevent crime and protect the world's biggest online businesses.

Role Description

We are looking for a talented front-end engineer to help build our growing fraud technology platform. In this role, you’ll play a key part in crafting the client-side of our web applications, transforming complex company and customer needs into sleek, user-friendly experiences.

Our codebase is built with React hooks and TypeScript, and is supported by a modern development ecosystem. As part of our engineering team, you'll be working on high-volume applications that directly impact how we detect and prevent payment fraud on a massive scale. This means you’ll have the opportunity to collaborate with a diverse team of talented engineers, designers, and product managers to create intuitive and scalable solutions.

Key Responsibilities

  • Design and implement intuitive, scalable, and responsive user interfaces for our fraud detection products
  • Work closely with engineers, designers, and product managers to translate business requirements into high-quality, functional applications
  • Write efficient, maintainable code that performs well under heavy load
  • Participate in code reviews, testing, and the continuous improvement of our internal development standards and best practices.
  • Continuously learn, grow, and adopt new technologies to keep our applications at the cutting edge

Requirements

  • 2+ years' work experience as a front-end engineer
  • Working experience with JavaScript/TypeScript and at least one modern JavaScript framework (React, Angular, Vue), HTML, CSS, Git, and APIs is essential
  • Familiarity with browser testing and debugging
  • Experience writing unit and integration tests
  • An understanding of layout aesthetics and user experience principles
  • An ability to perform well in a fast-paced environment
  • Excellent analytical and multitasking skills

Nice to haves

  • An understanding of the entire web development process (design, development and deployment)
  • Experience with React and TypeScript

Benefits

  • Flexible Working Hours & Remote-First Environment — Work when and where you’re most productive, with flexibility and support.
  • Comprehensive BUPA Health Insurance — Stay covered with top-tier medical care for your peace of mind.
  • £1,000 Annual Wellness and Learning Budget — Prioritise your health, well-being and learning needs with funds for fitness, mental health, and more.
  • Monthly Wellbeing and Learning Day — Take every last Friday of the month off to recharge or learn something new, up to you.
  • 25 Days Holiday + Bank Holidays + 1 Extra Cultural Day — Enjoy generous time off to rest, travel, or celebrate what matters to you.
  • Mental Health Support via Spill — Access professional mental health services when you need them.
  • Aviva Pension Scheme — Plan for the future with our pension program.
  • Ravelin Gives Back — Join monthly charitable donations and volunteer opportunities to make a positive impact.
  • Fortnightly Randomised Team Lunches — Connect with teammates from across the company over in person or remote lunches every other week on us!
  • Cycle-to-Work Scheme — Save on commuting costs while staying active.
  • BorrowMyDoggy Access — Love dogs? Spend time with a furry friend through this unique perk.
  • Weekly Board Game Nights & Social Budget — Unwind with weekly board games or plan your own socials, supported by a company budget.

*Job offers may be withdrawn if candidates do not meet our pre-employment checks: unspent criminal convictions, employment verification, and right to work.*

Posted 2026-03-09

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