Job Senior Software Engineer Team Data Location Remote (UA, Europe) Type Full-time Overview Koyfin is a rapidly growing, VC-backed fintech startup looking for a Senior Software Engineer (Node.js) to join a small team to help scale our product from thousands of users to millions of users. Our mission is to empower investors with easy-to-use analytics and beautiful charts to research stocks and understand market trends. Koyfin's vast, real-time data coverage includes data on stocks, Exchange Traded Funds (ETFs), fixed income securities, Foreign Exchange (FX) currencies, commodities, economics, financial news, and Twitter. Superior functionality combined with a delightful user experience explains why the number of users on Koyfin has tripled over the past year. Our daily users spend more than two hours per day on our browser-based platform. We’re not the only ones who think we’re on to something big. Koyfin is backed by Social Leverage and Craft Ventures, two of the savviest, value-adding seed-stage VC firms. Who we’re looking for? 5+ years experience in software engineering Experience with back-end technologies: Node.js, NestJS (or any other framework), SQL, and NoSQL databases. Experience with infrastructure: Cloud computing (AWS), CI/CD, Kubernetes Understanding design patterns, algorithms, and system design Great communication skills; curious, collaborative, humble, and an excellent problem solver Upper-Intermediate level of English Will be a plus Previous experience in FinTech startup Experience with front-end technologies: React (or any other framework), HTML, CSS. What you’ll be doing? You will join the Application team and help our effort to deliver a comprehensive investment experience to our customers. Tech Stack: TypeScript, Node.js, NestJS, React, RxJS, AWS, Kubernetes, MongoDB, PostgreSQL. More specifically: You will be responsible for the end-to-end development and implementation of features Being a small team requires you to be responsible for features, from gathering requirements to realizing and maintaining, and offering improvements Designing and implementing scalable web services, applications, and APIs Transform large and complex datasets into beautiful visualizations Identifying bottlenecks and improving software efficiency Work closely with the product management and design team to define feature requirements and deliver the product that materially impacts the business and improves the customer experience What we offer We strive to create an open environment where problems are solved by honest and rigorous discussion A small team at a fast-growing fintech startup where each person has a big impact and feedback from users Flexible work schedule Fully remote work or the possibility to attend the modern coworking space in the center of Kyiv Generous salary and bonus potential Health Insurance/Well-being payment Extra days of vacations.