Senior Backend Engineer, Core APIs

Fingerprint empowers developers to stop online fraud at the source. We work on turning radical new ideas in the fraud detection space into reality. Our products are developer-focused and our clients range from solo developers to publicly traded companies. We are a globally dispersed, 100% remote company with a strong open-source focus. Our flagship open-source project is FingerprintJS (20K stars on GitHub). We have raised $77M and are backed by Craft Ventures, Nexus Venture Partners and Uncorrelated Ventures. We have noticed a rise in recruiting impersonations across the industry, where scammers attempt to access candidates' personal and financial information through fake interviews and offers. All Fingerprint recruiting email communications will always come from the @fingerprint.com domain. Any outreach claiming to be from Fingerprint via other sources should be ignored. Senior Backend Engineer, Core APIs We are seeking an experienced Senior Software Engineer to be part of the development of end-to-end fraud detection solutions for our API team. Your primary responsibility will be building highly performant backend systems and infrastructure that handle large-scale real‑time data processing. This role requires strong experience and skills in backend software development, particularly focused on API development and scaling existing systems in both Go and Node.js. You will design and implement scalable, high‑performance backend systems, ensuring smooth integration with other components. You’ll take ownership of features from concept to final deployment, working closely with cross‑functional teams to deliver reliable and robust solutions. A key aspect of this role involves a deep understanding of scaling distributed systems thereby allowing us to multiply our capacity safely and efficiently as our user base continues to grow rapidly. What you’ll do: Design, develop, and optimize backend systems for real‑time data processing and web services. Work with cros