Dnipro · Application engineering studio
Applications, calibrated for release.
We design, build and publish mobile and web applications where security is not a separate audit at the end, but a tolerance measured at every step.
Work channels
Four instruments. One standard of precision.
CH-A · Mobile
Mobile development
Native and cross-platform apps with secure token storage, protected transport and offline scenarios planned up front.
Specification →CH-B · Web
Web development
Portals, internal systems, APIs. Access control enforced on the server, not only in the interface.
Specification →CH-C · Interface
UI/UX design
Interfaces where the safe action is the easiest one: clear permissions, honest errors, WCAG 2.2 AA accessibility as a requirement rather than a wish. The design system ships with tokens and component states.
Specification →CH-D · Release
Publishing support
App Store and Google Play preparation: privacy declarations, screenshots, reviewer test accounts, handling rejections.
Specification →CH-E · Method
What you receive every time
A repository you own, a decision log, a threat model, a dependency report and deployment instructions.
Method →
Server rack in a secure data centre. Source: Free High-tech server rack in a secure data center with network cables and hardware components. Stock Photo · Pexels License
Infrastructure
Does security stop where the app stops? No.
We design the application together with the environment it will run in: separated access, backups, logs without personal data.
Quality tolerances
We don't promise "the best". We define what gets measured.
| Parameter | Acceptance criterion | How it is checked |
|---|---|---|
| Authentication | Tokens only in Keychain / Keystore or httpOnly cookies | Code review + on-device storage inspection |
| Dependencies | No known critical vulnerabilities at release time | Automated CI scanning, report attached |
| Accessibility | Contrast ≥ 4.5:1, full keyboard navigation, screen-reader labels | Manual pass + automated checks |
| Web performance | LCP ≤ 2.5 s, CLS ≤ 0.1 on a mobile profile | Lab measurements on every release |
| Recovery | Documented version rollback procedure | Rehearsed rollback before launch |
Positioning
Where we work best
Our specialisation is products where a mistake costs more than a delay: services handling personal data, payments, medical or financial information, and internal company tools. This is our focus and way of thinking, not a list of completed case studies.
- Start-ups that need a first release without security debt.
- Companies moving internal processes into a web portal.
- Teams that want an independent second pair of eyes before publishing.