Electrical Engineer · Software Developer

Konstantinos Lyvissianos

Building Android tools, desktop automation platforms, Unity games, and full-stack web applications. Precise software, real problems, one developer.

.NET / C#.NET MAUI UnityWinForms ReactASP.NET Core SQL ServerPostgreSQL
View work GitHub ↗
01 — Mobile
Android applications
EE TOOLKIT Ω
EE Toolkit
Utility · Free + Pro
Electrical engineering calculators, AI resistor scanner, circuit plots, and reference tools for working engineers.
.NET MAUIMVVMOxyPlotAI
● Finished · Play Store
MEDITRACK Φ
MediTrack
Health · Offline-first
Offline medication schedules, dose tracking, doctor contacts, notifications, and long-term history — no account required.
.NET MAUISQLiteNotifications
● Finished · Public GitHub ↗
FOODDIARY 🍽 🎤 Λέξε το φαγητό σου...
FoodDiary
Greek · Voice input
Greek-language meal logging with on-device voice input, local food database, diet schedules, and weekly history.
.NET MAUIWhisper.netSQLite
◐ In progress
02 — Games
Interactive systems
IDLE EMPIRE 💼 📈 APPROVE? [YES] [NO] REGRET POINTS: 2,847 · PRESTIGE: 3
Idle Empire of Bad Decisions
Idle / Satirical · Unity · Android
A portrait-oriented satirical idle game — the player approves increasingly questionable corporate decisions, manages generators and upgrades, and converts progress into prestige. Core loop, offline earnings, tutorial system, and save/load implemented.
Unity 6C#URPDOTweenTextMeshPro
◐ In progress · Playable build
03 — Desktop
Automation & data tooling
Excel Workflow Tool ✓ 1,240 records processed
Excel Workflow Tool
Business automation
Replaces spreadsheet macros — multi-file Excel/CSV imports, rule validation, action mapping, and standardized output workbooks.
.NET 8WinFormsClosedXMLSerilog
● Finished · Production
Reconciliation Platform Target: 94.2% · Forecast: Day 18
Reconciliation Platform
Payment · Forecasting
Reconciles payment files against account bases, applies business rules, calculates commissions, tracks targets, generates forecasts.
.NET 8WinFormsClosedXMLJSON config
◐ In progress · Operational
Excel Calculator Bridge Input A: 12,400 Input B: 8.75% Type: Agricultural Calculate Result: €2,847.30 · Subsidy: €341.68
Excel Calculator Bridge
Excel integration
Desktop front end that writes structured inputs to Excel worksheets, triggers COM recalculation, and returns formatted results to the UI.
.NET 8WinFormsCOM InteropClosedXML
● Finished
04 — Full-Stack
APIs, data platforms & web
Analytics localhost:5173/dashboard
Analytics Dashboard
Full-stack · ETL · React
CSV/Excel ingestion, schema discovery, ETL pipeline, warehouse modeling, KPI analytics, and React dashboard with charts.
ASP.NET 8EF CoreSQL ServerReact 19Recharts
◐ In progress
Diatages localhost:5173/cases Hangfire · 3 reminders dispatched
Diatages Reminder
Legal · Background jobs
Legal case platform with deadline tracking, automated reminder pipeline, audit history, security boundary, and E2E test coverage.
.NET 8 APIPostgreSQLHangfireReact 19Playwright
● Finished · Architecture showcase
Kanban localhost:5173/board To Do Doing Done
Kanban Board
Full-stack · Public
Boards, columns, cards, drag-and-drop reordering, and Swagger-documented REST API. Clean API-to-React integration example.
.NET 8 APIEF CoreSQL ServerReact 19TypeScript
● Finished · Public GitHub ↗
05 — Contact
Let's connect

Freelance inquiries, collaboration, or just want to say hello — reach out through any of the channels below.

LinkedIn GitHub hello@lykon.gr Play Store