Senior Backend Developer (Ruby on Rails)

Sweatcoin is a global Top 10 Health & Fitness app that tracks physical movement, converting it into digital currency. The free app comprises movement-verification technology, gamification and a marketplace of exclusive offers and product deals that Sweatcoin can be redeemed for. Sweatcoin 4 Good also enables donation of the currency to good causes. With 100M+ Sweatcoin downloads, we are the fastest ever growing Health & Fitness app with 20M downloads this year alone, putting us at the top of 42+ countries' app stores as the most downloaded Health & Fitness app of 2022 to date. Since June 2021 we've worked with 1300+ brand partners providing the equivalent of $200 million of value in exchange for users' steps, increasing their walking by an average of 20%. In total our users have walked 23 Trillion steps. Sweatcoin is a rapidly-growing, profitable UK business and a global thought leader within health-tech. The business has collaborated with influential academics on research published in the British Journal of Sports Medicine into the success of incentivised behavioural change and worked with the NHS on a successful trial with pre-diabetic patients. (A trial that resulted in an 85% retention rate and average weight-loss per participant of 1.1kg). Covered by New York Times, CBS, Forbes, Fortune, Reuters, Huffington Post and others, Sweatcoin has raised capital from investors across the US & Europe, including Goodwater Capital, Greylock Partners, Justin Kan (founder of Twitch and Justin.tv) and Rain Lohmus (founder of LHV Bank). London-headquartered, with team members based across the world representing 22+ nationalities, it is the people that make Sweatcoin a special company and a great place to work. Our Purpose: To inspire a healthier planet by unlocking the value of movement Our Vision: A world where an open-economy of movement - of wealth through health - exists Our Mission: Create a global, new-generation* currency generated by physical movement