Developer tools, data systems, embedded hardware

Costin

I build practical software for real workflows: terminal-native developer environments, telemetry dashboards, PCB manufacturing validation, and collaborative web systems.

Building projects that connect code to hardware, data, and developer workflows.

The work here is intentionally grounded: Rust/Tauri desktop tooling, Spring Boot and Angular systems, PostgreSQL pipelines, e-paper hardware design, and repeatable validation with GitHub Actions.

Real repos worth opening.

InkTime PCB component layout

Hardware design

InkTime

Low-power e-paper smartwatch design around nRF52840 with charging, fuel gauge, haptics, IMU, STEP models, BOM, PnP, and manufacturing validation.

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Developer tooling

OpenSpace

Linux-first Tauri and React workspace for multi-pane terminal workflows, typed IPC, PTY-backed sessions, editing, templates, and Git-aware workspace tabs.

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Collaboration app

virtualcete

C#, .NET, Razor, and MySQL chat/collaboration project with channels, roles, moderation, requests, embedded media, and user workflows.

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Small changes, real project value.