PATRONHUBDEVS // SERVICES

Custom software,
built right.

Need a bespoke security tool, a licensing engine for your software product, or a hardened desktop application? Let's build it.

Desktop Application Development

For: software companies, indie developers, enterprises

Custom Windows desktop applications using PySide6 — offline-first, encrypted local storage, system tray integration, and dark-themed professional UI. Built to the same standard as NoteArmor.

What you get
  • PySide6 / PyQt5 application
  • Offline-first architecture
  • Encrypted local storage
  • Installer + update system
  • Full source handoff
Enquire about this service

Licensing System Integration

For: indie developers selling desktop software

Deploy the same HWID-bound, RSA-4096 offline licensing engine that powers NoteArmor Pro. No license server required. No subscription. Generates, validates, and revokes licenses cryptographically.

What you get
  • HWID fingerprinting
  • RSA-4096 key generation
  • Cython-compiled .pyd validator
  • License generator script
  • Integration guide
Enquire about this service

Security Tool Development

For: security teams, penetration testers, privacy-focused organisations

Custom encryption utilities, secure file vaults, 2FA managers, and audit tools. Built with PyCA cryptography primitives — not homebrew crypto. OWASP-aligned implementation.

What you get
  • AES-256 / RSA / TOTP integration
  • Secure key derivation (PBKDF2, HKDF)
  • Audit logging
  • Tamper detection
  • Code documentation
Enquire about this service

Flask Backend & Security Hardening

For: developers deploying Python web applications

Flask application architecture, Blueprint refactoring, rate limiting, CSP/nonce injection, Flask-Login integration, and OWASP Top 10 remediation. We've done this for PatronHubDevs itself.

What you get
  • Blueprint-based architecture
  • Flask-Login + role-based access
  • CSP + Talisman config
  • Flask-Limiter (Redis)
  • Production Gunicorn setup
Enquire about this service

Security Audit & Code Review

For: developers before launch or after an incident

OWASP Top 10 audit of your Flask or desktop Python application. We identify real vulnerabilities — XSS vectors, broken auth, exposed secrets, unsafe file handling — and deliver a prioritised fix plan.

What you get
  • Written audit report
  • Vulnerability scoring (CVSS)
  • Prioritised fix roadmap
  • Code-level remediation examples
  • 1 follow-up review
Enquire about this service

Technical eBook & Content

For: developers and educators building knowledge products

Professionally formatted technical eBooks on Python security, cryptography, licensing systems, and developer tools — built to sell on Gumroad and Ko-fi. We've shipped multiple titles.

What you get
  • Structured outline
  • Technical content writing
  • Code examples
  • Formatted .pdf / .docx
  • Gumroad-ready asset
Enquire about this service

How it works

A predictable engagement — no surprises, no scope creep

01
Brief

Tell me what you're building, your constraints, and your timeline via the contact form.

02
Proposal

I send a scope document with deliverables, timeline, and a flat rate. No hourly billing surprises.

03
Build

Development with regular updates. You have direct access to the developer — no account managers.

04
Handoff

Full source code delivery, documentation, and a one-week review window before final payment.

What does it cost?

Flat-rate project pricing. No hourly billing, no surprise invoices.

Small scope
$200 – $600

Single-feature utilities, script automation, small security tools, or a licensing integration into an existing app. Typical turnaround: 1–2 weeks.

Medium scope
$600 – $1,500

Full desktop application with UI, encryption, and installer. Security audit of an existing Flask or Python app. Typical turnaround: 2–4 weeks.

Large scope
Custom quote

Complex multi-module applications, full licensing SDK integration, or ongoing retainer for maintenance and updates. Scoped after the brief.

All prices in USD  ·  50% upfront, 50% on delivery  ·  Scope locked before build starts

Describe what you need.
Get a scope document back in 24h.

The contact form takes 2 minutes. I reply with whether it's a fit, a realistic timeline, and a flat-rate quote — before any commitment.

Send a Project Brief

No retainer required  ·  No sales call  ·  Reply within 24 hours