FingerprintJS, Inc

FingerprintJS empowers developers to solve online fraud at the source. We are a 100% remote company with a strong open-source culture. Our flagship open source project is FingerprintJS (14K stars on GitHub). 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. Recently we raised $12M, backed by Nexus VP (previously invested in Postman, Hasura) and Uncorrelated Ventures (previously invested in Redis, Rollbar & Gradle). We’re looking for an experienced backend engineer to help us build a high accuracy online fraud prevention service. Someone who has experience building fast systems and APIs. What we’re looking for : - Proven experience of API architecture and implementation. - Good understanding of networking protocols. - Experience building scalable infrastructure. - Good understanding of relational and NoSQL databases. - Excellent understanding of Internet security & privacy mechanisms. - Cloud experience. Ideally we would love to have someone who also has: - Historical record of open-source contributions. - Security / Cryptography background. Don’t be afraid to apply even if you’re missing a few bullet points in there! Our stack: - Golang and NodeJS - AWS (Lambda, Elastic Beanstalk, RDS, DynamoDB). - PostgreSQL. - Docker. To apply, send your CV with your GitHub profile and an answer to the below questions to work @ fingerprintjs.com: How would you represent a mathematical vector? Please provide a basic implementation that supports core operations (cross product, dot product etc). Any applications that don't answer the question will be ignored due to the high volume of applications and lack of ability of candidates to fully read the job description :)