Opentech OÜ

Opentech OÜ is a small software company from Estonia, registered in 2018. We build custom web applications, APIs and bots for startups, founders and small businesses — quickly, and at a fixed price agreed before work starts.

What we do:
- Custom software development: web apps, APIs, backends and SaaS products
- MVPs and prototypes: a working first version in weeks, not months
- Software testing: unit, integration and end-to-end tests, regression suites in CI, manual QA before releases
- Monitoring and error analysis: uptime, SSL and domain checks with alerts, root-cause analysis and fixes
- Support and maintenance, including taking over projects left behind by a previous developer
- Code and security audits for web apps, APIs, and EVM and Solana smart contracts
- Lower hosting costs by moving apps to serverless and edge platforms
- Integrations, Telegram bots and AI features built on large language models
- Smart contracts for EVM chains and Solana, private networks on Cosmos SDK

How we work: fixed scope and fixed price, a small team and a lean stack, working builds you can try early, and we stay after launch. Communication is asynchronous, in English, Estonian or Russian, with a reply within one business day.

We also build and run our own products, which is the best proof that we ship and operate: fewbase (five small SaaS tools behind one account, with around 370 test files), Baltic Monitor (a daily AI-researched security digest in four languages), Drones War (a browser strategy game) and DevGrants Daily (a daily, fact-checked feed of grants and hackathons for developers).