Security
VPN
Mobile Application

About this project
VPN is a custom product designed, developed, tested and deployed by our team, with the source code and accounts handed over to the client.
A VPN mobile application. Security products are held to a different standard: the app is the thing standing between a user and their network, so the parts that matter are the ones nobody sees, key handling, connection state, and what happens when the tunnel drops.
What a build like this covers
- Server list with latency indication and country selection
- Connection lifecycle handling, including reconnect after network change from mobile data to Wi-Fi
- Kill-switch behaviour so traffic does not leak when the tunnel drops unexpectedly
- Subscription and entitlement checks validated server-side
- Platform VPN APIs used directly rather than through a wrapper that obscures the connection state
What we watch for in security work
A VPN client is only as trustworthy as its logging policy and its failure behaviour. We build the client and the entitlement layer; the operator is responsible for the server infrastructure and the policy they publish about it.
Stack
We build security products in Flutter and native Android and iOS on the client, with Node.js and NestJS services behind them, TypeORM over PostgreSQL or MySQL where the data is relational, MongoDB where it is not, and Firebase for authentication, push and analytics. Web panels are React. The choice follows the product. We do not start from a template and bend the requirements to fit it.
How we work
Every project starts with a written scope and screen list, moves through design and iterative development with regular demos, and ends with testing on real low-end devices before release. Clients own their code, repositories and store accounts. Where it adds genuine value, we integrate AI features (assistants, document extraction, recommendations) rather than bolting them on for show.