GoCardless (YC S11) is looking for software developers in London

We are looking for a back-end software developer to join our team to help build out systems & handle user growth. You'll have the opportunity to contribute to different areas of the code-base and choose which projects interest you. ON A DAY-TO-DAY BASIS, YOU WILL BE: - Working on systems to intelligently identity-check and risk-assess new customers and merchants. As we grow, this is likely to include a significant machine learning element. - Building and maintaining client libraries for our API in a number of different languages. These include the usual suspects like PHP, Ruby, Python, .Net, Java etc, and extend to newer (and often experimental) libraries in languages like Go and Clojure. - Building out internal services to communicate with international banking systems on a programmatic level. Since many of these will be built from scratch, you'll have the opportunity to shape the projects from the beginning. YOU SHOULD APPLY IF YOU: - Are proficient in at least one dynamically-typed, object-oriented language (e.g. Ruby, Python), and have significant experience with a modern web framework, such as Rails or Django. - Have an awareness of the full web stack. You live and breathe HTTP, feel comfortable optimising SQL queries, and have at least a basic understanding of JavaScript. - Demand that code be well-tested, and believe that tests are a helpful tool in driving design, not merely a tedious afterthought. YOU'D BE A PARTICULARLY GOOD FIT IF YOU: - Have built and scaled web services to perform while serving hundreds of thousands of users. - Are excited by the world of technology startups. You're a self-starter looking for responsibility and a place you can make an impact. - Feel comfortable in the UNIX world: you grep, sed, and awk your way through text files, and have experienced the joy of writing SysVinit scripts. - Are familiar with any of the following: Redis, RabbitMQ, ElasticSearch, Chef. We have roles for experienced & more junior developers - the salary is extremely competitive and will depend on experience & ability. Stock options will form part of the compensation package. To apply, email maria@gocardless.com