Shotaro Sakamaki is a front-end engineer at PixelGrid.Inc, a company that develops JavaScript applications. He discusses the communication tools and development environment used by PixelGrid's remote workers. Key tools mentioned include Slack for chat, esa.io for documentation sharing, GitHub for source control, and ZenHub as a GitHub extension. Costs for these paid services range from $3.99 to $6.67 per user per month. While costs may seem high, the speaker argues they replace expenses from maintaining multiple free tools and reduce invisible maintenance costs.