payroll-engine

A high-performance, concurrent payroll engine API built with Elixir & Phoenix. Features automated net salary calculation with country-specific tax rules, processing workloads in parallel using Task.async_stream. Containerized with Docker and Kubernetes, deployed on AWS with GitHub Actions CI/CD.

A Windows desktop payroll application for a real Illinois employer. The user interface is a Tauri 2 + React desktop app; all payroll math runs in a tested .NET 8 engine that the frontend drives as a local JSON-RPC sidecar. Data is stored locally in SQLite.

Ghana GRA-compliant progressive PAYE payroll tax calculation engine and educational data transparency dashboard built with Streamlit.