- Code: TypeScript, JavaScript (ES6+), Ruby, Python, C#, Rust
- Frontend: React, HTML5, CSS3, Svelte, Slint
- Backend & protocols: Node, Rails, Websockets, service workers
- Databases: PostgreSQL, MongoDB, MS SQL, Sqlite
- DevOps & cloud: Docker, Kubernetes, Azure, GitLab CI/CD, GitHub Actions, CircleCI, Jenkins
- Ways of working: Git, Jira, Agile/Scrum, rapid prototyping
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