David Sakhelashvili 👋

Director of Multi-Channel Payment Systems · Enterprise Architect · Software Engineer

Architecting high-availability payment platforms, vendor-independent POS ecosystems, and high-performance processing infrastructure.

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🧠 About Me

• 20+ years in software engineering & fintech
• Building mission-critical payment systems
• From hands-on coding → to system & organizational architecture
• Performance, reliability and security as first-class requirements

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🧩 Architecture Portfolio

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🔄 Runtime Flow — Online Authorization

🔐 Key Management & Security

💳 Clearing & Settlement

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🚀 Core Expertise

• Distributed payment systems
• ISO-8583 message processing
• EMV L2 kernel integration
• TLV parsing & cryptographic flows
• HSM (network & pooled connections)
• High-TPS backend architecture
• SLO / SLI driven engineering

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🧰 Tech Stack

Backend

Java · Kotlin · Spring Boot · gRPC · REST · PostgreSQL · Redis

Frontend

Angular · TypeScript

Mobile / POS

Android 13 · Jetpack Compose · Hilt · Coroutines

Infrastructure

HAProxy · Docker · Linux · CI/CD

Payments

EMV · ISO-8583 · DUKPT · HSM

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📊 Engineering Principles

• Reliability over velocity
• Measure everything
• Automate everything
• Security by design
• Clean architecture at scale

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🤝 Contact

• LinkedIn: https://linkedin.com/in/datikos

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🧭 Current Mission

Building a vendor-independent, high-performance, multi-tenant payment platform capable of:

• 10k+ concurrent terminals
• horizontal scaling
• multi-HSM routing
• real-time observability