Service · Pyinv

Secure software & apps that pass audits.

Web, mobile and SaaS, built secure from the ground up. We develop software for environments where data protection and auditability are non-negotiable.

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What we build

Secure software & app development

Software for regulated industries rarely fails on features, it fails on security, data protection and auditability. We build web, mobile and SaaS applications that hold up under external penetration tests, audits and data-protection reviews, without sacrificing speed or user experience. Every architecture decision stays documented and provable, from the first draft to launch.

✓Web apps & portals
✓Mobile apps (iOS & Android)
✓SaaS platforms
✓APIs & secure backends
✓eCommerce & customer portals
✓Maintenance & evolution

What you get

Threat model & security concept

A documented analysis of risks, data flows and safeguards, before the first line of code.

Auditable architecture

Clear boundaries, roles, encryption and documentation an auditor can actually follow.

Automated tests & CI/CD

Test coverage and pipelines that catch regressions early and make every release reproducible.

GDPR by design

Data minimisation, EU hosting, purpose limitation and deletion concepts from the start, not as an add-on.

Audit & pentest readiness

Hardening and evidence so external reviews become a formality, not a fire drill.

Maintenance & evolution

Secure updates, monitoring and further development after launch.

Why Pyinv

Proven, not claimed.

Security as the foundation

Security is part of every architecture decision, not an afterthought.

Experience from real audits

Our founder built systems that passed pharma pentests and BSI reviews.

AI-accelerated, clean

Fast delivery without sacrificing auditability.

How we work

From idea to audit.

Analysis & goals

We understand the project, users and regulation.

Architecture & security

A foundation that withstands scrutiny.

Development & tests

Clean code, automated tests, clear milestones.

Launch & audit-readiness

Shipped and ready for any review.

Standards & technologies

FlutterVue / NuxtGo · PythonREST · WebSocketPostgreSQL

FAQ

Which platforms does Pyinv build?

Web, iOS, Android and SaaS, with Flutter and Vue/Nuxt on the front end and Go and Python on the back end.

What does secure by design mean?

Security and data protection are part of the architecture from day one, not bolted on later.

Can you secure existing systems?

Yes. We take on security reviews, hardening and refactoring of existing applications, not just new builds.

How do you ensure GDPR compliance?

Data protection is part of the architecture: data minimisation, EU hosting, encryption and documented deletion and access concepts.

Do you work with our in-house team?

Yes. We deliver independently or integrate into your team, with clear interfaces and clean handovers.

How fast can you deliver?

AI-accelerated development shortens cycles considerably without sacrificing auditability. We set concrete timelines after the analysis.

Ready to build securely?

Tell us about your project. The intro call is free and non-binding.

Request a project →