Devaster

Devaster is a software and AI studio that designs and builds custom web applications, SaaS products and AI integrations, including LLM assistants, RAG, MCP and workflow automation. It also builds data pipelines and dashboards, and offers fractional CTO services covering system architecture, security and code reviews, cloud, CI/CD and team guidance.

The studio serves small and growing companies and is described on its website as a one-person studio led by founder Jürgen Hannus, who delivers projects directly. Devaster also publishes four products of its own: Selfcarwashes, a map-based catalogue of over 14,000 self-service car washes in more than 30 European countries; Vooluhind, a free app that forecasts Nord Pool hourly electricity prices up to 72 hours ahead; Avahanked, a public search of Estonian public-sector IT procurements; and Isepesulad, a bilingual map of Estonian self-service car washes.

The studio was founded in 2018 and is based in Tallinn, Estonia. The founder's experience, as stated on the website, includes Java and Spring systems for Estonian e-government on X-Road, banks and international SaaS companies. The company's registry entry lists between 1 and 9 employees.

Product: Custom web applications, SaaS and AI integrations, data pipelines and dashboards, and fractional CTO services, plus four own products.