Sebastian Janus is an experienced Interim CFO and trusted finance partner for fast-growing SaaS companies. Through his consultancy nugrow, he helps founders, management teams, and investors build scalable finance organizations, improve financial transparency, manage cash and performance, and prepare companies for fundraising, M&A, and the next stage of growth.

His work combines hands-on operational leadership with strategic CFO expertise. He steps into companies when finance needs to become faster, more reliable, and ready to support complex growth.

Before founding nugrow, Sebastian built and exited two e-commerce companies. Following the sale of his most recent business to Foot Locker, he served for four years as CFO of Foot Locker’s European e-commerce business. Today, he brings this founder, operator, and transaction experience to ambitious SaaS companies across Europe