Sergiu Merticariu
I build software, and have done so for nearly ten years — applications used every day by people I will never meet. The part I enjoy most is where something complicated turns simple on screen.
Most of my time goes into large-scale frontend: React and TypeScript, architecture that survives three years of change, performance. I am equally at home further down the stack — databases, real-time communication, workflows built around AI agents.
On my own, I build native apps for Mac and iPhone, published under my own name.
4 apps shipped · macOS + iOS · all in 2026
Apps I built on my own
Small, native, no accounts, no tracking. Privacy here is not a promise in a policy: three of them have no network access at all, so they cannot send anything anywhere even if they wanted to.
VerdantiOS
Your home is not a to-do list. One task a day, sized to the time you actually have. No red badges, no guilt for the day you missed.
PulseDuoiOS
A quiet line between two people. No texts, no emoji — just a pattern of taps your partner feels on their iPhone or Apple Watch.
BatteryGuardmacOS
The battery tools Apple never shipped: alerts at any level, real health history, widgets. Computed on your Mac, no network, no accounts.
PoliconvoDesktop
Every business conversation in one desktop app. WhatsApp, Messenger, Telegram, Slack — without ten windows open.
In development
Where the hours go
Frontend is my home ground, but I never stopped there.
- Background
- Senior Frontend Engineer at ASSIST Software since 2016
- Apple
- Native apps for macOS and iOS, shipped on the App Store
- Frontend
- React, TypeScript, application architecture, performance
- Real time
- WebSocket, messaging, communication systems
- Platforms
- Salesforce, systems integration
- AI
- Agents and skills with Claude
- Desktop & data
- Electron, Supabase, PostgreSQL
When I am not writing code
Strategy games, mostly. League of Legends for the competitive itch, Heroes of Might & Magic III and Command & Conquer: Red Alert 2 — because some games from 1999 have aged better than plenty released last year.
- League of Legends
- Heroes of Might & Magic III
- C&C: Red Alert 2
Where to find me
Write to me if you want to talk shop, trade ideas, or simply say hello.
- /in/smerticariu
- Location
- Suceava, Romania