0+X is a technology consultant company, offering consultants and experts within full-stack and big-data development to companies in Scandinavia.

Denis Koltsov
Full-stack Developer
Denis Koltsov
A senior developer (8+ years) who worked with React since its inception and has a strong passion for building robust and performant back-end services using Go and Node.js. Denis is a regular contributor to open-source and a proponent of TDD and code quality control. A team player with solid understanding of business requirements he cares deeply about the end product.