WELCOME TO JOIN.TECH

Engineering Robust Software with a Focus on Clarity and Control

Join the Dots in Tech

Join.tech, founded by David Schmid, combines expertise across software architecture, cybersecurity, and performance engineering to create robust, purpose-built solutions.

Whether collaborating on-site in Vienna or Zurich, or working remotely, every engagement is tailored to the client’s needs — with a focus on clarity, security, and practical outcomes.

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Main Teaser Image: Global Connectivity
Services Teaser Image: CPU Circle

Services

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Industries

  • FinTech: fast, compliant systems for real-time payments and analytics.
  • Logistics: process automation and system integration for global operations.
  • Public Sector: infrastructure and digital platforms for institutions and archives.
  • Cybersecurity: secure-by-design systems, protocol analysis, and compliance support.
  • Developer Tools: engineering internal platforms, SDKs, and command-line tooling.
Illustration representing different industries

Key Technologies

  • Rust: fast, safe, and robust backends.
  • C/C++: system-level development and cryptographic implementations.
  • Python: backend logic, automation, and scripting.
  • WebAssembly: performance-heavy tasks in the browser.
  • Flask: lightweight, modular web applications and APIs.
  • SQL: structured data access, modeling, and optimization.
Image Key Technologies
Image Architecture and Interfaces

Architecture & Interfaces

  • Synchronous & Asynchronous Systems: scalable architectures for real-time and deferred operations.
  • REST APIs: clean, stateless communication.
  • EDI: robust integrations with legacy systems.
  • SQL Triggers & LISTEN/NOTIFY: database-level events for reactive systems.
  • Debian Linux: stable foundation for service deployment.
  • Compliance Engineering: architectural decisions aligned with standards like PCI-DSS and ISO 27001.
  • WebSockets & Raw Sockets: real-time bidirectional communication for low-latency data exchange.