Fullstack Engineer, Investigator Tools

<p style="min-height:1.5em"><strong>Who we are:</strong></p><p style="min-height:1.5em">Sardine is the leading agentic risk platform for fighting financial crime. Our integrated solution unifies data across risk teams to help organizations stop fraud in real time, prevent AI-driven attacks, and automate fraud and AML operations. Sardine’s platform is strengthened by one of the fastest-growing fraud consortiums in the market, spanning more than 6 billion profiled devices, 800 million consumers, and 3 million businesses worldwide. Leading companies including FIS, GoDaddy, Intuit, Edward Jones, ZoomInfo, and Checkout.com rely on Sardine to secure and grow trust in their products.</p><p style="min-height:1.5em"></p><p style="min-height:1.5em"><strong>Our culture:</strong></p><ul style="min-height:1.5em"><li><p style="min-height:1.5em">We hire talented, self-motivated individuals with extreme ownership and high growth orientation. </p></li><li><p style="min-height:1.5em">We value performance and not hours worked. We believe you shouldn't have to miss your family dinner, your kid's school play, friends get-together, or doctor's appointments for the sake of adhering to an arbitrary work schedule.</p></li><li><p style="min-height:1.5em">We're a remote-first team spread across time zones, so no office to report to - work from wherever helps you do your best work. Just a couple of things to keep in mind: pay is based on where you're located, and you'll need to keep a home base in the country you're hired in. So while we love the "coffee shop today, mountains tomorrow" life, this isn't a passport-optional, work-from-anywhere-on-Earth kind of remote - think flexible <em>within</em> your country, not borderless.</p></li></ul><p style="min-height:1.5em"></p><p style="min-height:1.5em"><strong>Location:</strong></p><ul style="min-height:1.5em"><li><p style="min-height:1.5em">Remote - <strong>United Kingdom</strong></p></li></ul><p style="min-height:1.5em"></p><p style="min-height:1.5em"><strong>About the role:</strong></p><p style="min-height:1.5em">As a Full Stack Engineer at Sardine, you will bridge the gap between complex technical backend systems and user-friendly interfaces to help us stop fraud in its tracks. This is a dynamic, high-impact role. On average, you will be working 60% on backend development and 40% on frontend development but are willing to help out wherever is needed. You will build out data-intensive applications, including advanced graph systems used to uncover complex fraud rings. You will own features end-to-end at a massive scale, ultimately empowering fraud analysts to uncover and investigate suspicious transactions faster than ever before.</p><p style="min-height:1.5em"></p><p style="min-height:1.5em"><strong>What you’ll be doing:</strong></p><p style="min-height:1.5em"><strong>Own features end-to-end:</strong> Drive the product lifecycle from determining the initial problem space and user needs, to technical modeling, UX execution, and iterative improvements based on vague requirements.</p><p style="min-height:1.5em"><strong>Translate complexity to usability:</strong> Build out complex technical systems into intuitive, user-friendly interfaces.</p><p style="min-height:1.5em"><strong>Build fraud-fighting tools:</strong> Develop and optimize advanced graph systems to visualize fraud rings, and build performant searc