Davit PrazyanCTO · Solution Architect

Yerevan, Armenia · GMT +4 · Currently CTO at YAVVI AI

Davit Prazyan

I design and ship scalable SaaS platforms, fintech systems, AI-powered products and high-load microservice architectures - end to end, from the whiteboard to production.

  • 10+Years in engineering
  • 25+Client projects delivered
  • 8Core technologies mastered
  • CTOCurrent role
Who you are hiring

About

Senior Full Stack Developer, Team Lead and Solution Architect with 10+ years of experience building scalable SaaS platforms, fintech systems, AI-powered products, high-load services and microservice architectures.

I work across the whole stack - PHP (Laravel, Yii2), Node.js (NestJS, Express) and Python (FastAPI) on the backend; React, Vue, Nuxt and Next.js on the frontend. I design high-load systems, optimise databases, and build event-driven and realtime architectures on WebSockets and message queues.

Beyond code, I take on the technical leadership: architectural decisions, project scoping and estimation, client communication, and planning the work of the team. I also modernise legacy systems without disrupting the business running on top of them.

  • Based inYerevan, Armenia · GMT +4
  • EducationBSc Computer Science & Applied Mathematics, Yerevan State University
  • LanguagesArmenian (native) · Russian (C1–C2) · English (B1)
  • Focus areasAI integrations, fintech & payments, Web3/dApps, realtime systems
The tools I build with

Stack

01

Backend

  • PHP
  • Laravel
  • Yii2
  • Core PHP
  • Node.js
  • NestJS
  • Express
  • Python
  • FastAPI
  • REST API
  • WebSockets
  • RabbitMQ
  • Event-driven architecture
02

Frontend

  • React
  • Redux
  • Vue 2/3
  • Nuxt 2/3/4
  • Next.js
  • TypeScript
  • Tailwind
  • Material UI
  • jQuery
03

Mobile

  • React Native (iOS/Android)
  • Flutter
04

Databases

  • PostgreSQL
  • MySQL
  • MongoDB
  • SQLite
  • Query optimisation
  • High-load DB architecture
05

Infrastructure & DevOps

  • Docker / Compose
  • Linux
  • Nginx
  • Redis
  • RabbitMQ
  • CI/CD (GitLab Runner)
  • Prometheus / Grafana
  • Sentry
  • DNS & cloud infra
06

AI & Computer Vision

  • YOLO / Ultralytics
  • ByteTrack
  • ONNX
  • LangChain
  • FAISS
  • RAG pipelines
  • LLM decision layers
07

Web3 / dApp

  • Solidity
  • EVM chains
  • Ethers.js
  • Web3.js
  • MetaMask
  • WalletConnect
  • On-chain data & contract events
08

Payments, Auth & Analytics

  • Stripe
  • YuKassa
  • JWT
  • OAuth2
  • VK ID
  • Yandex ID
  • SMS/Voice OTP
  • Telegram Apps & Bots
  • Google Analytics
  • PostHog
Where I have done it

Experience

  1. An AI-powered computer vision and video analytics product. A domain-agnostic CV platform for video stream analysis; first demo use case - gas stations (event detection, on-site analytics).

    • Own the technical strategy and architecture of the CV platform: detection and tracking pipeline (YOLO, ByteTrack), inference (ONNX), backend (FastAPI) and the LLM-based decision layer.
    • Designed a domain-agnostic platform architecture reusable across verticals - retail, gas stations and beyond.
    • Building the technical team, planning the roadmap and prioritising development.
    • Technical scoping and commercial proposals for clients (fixed-price / T&M): task breakdown, effort estimation, architectural decisions - e.g. choosing a CRM architecture for a multi-platform project spanning PWA, website, iOS/Android and analytics.
    • Designed auth systems for client projects in the Russian market under regulatory constraints: SMS/voice OTP, with VK ID and Yandex ID as supplementary OAuth2 options.

    CTO + technical team allocated by product area

    • YOLO
    • ByteTrack
    • ONNX
    • FastAPI
    • Python
    • LLM
    • Laravel
    • Yii2
    • VK ID
    • Yandex ID

  2. A software company delivering full-stack development for external clients. 25+ client projects of varying scale and domain - from EdTech and computer vision to travel-booking platforms and GPU infrastructure.

    • Full-stack development and technical delivery of client projects as part of the agency team.
    • From 08.2025 - additional Business Analyst role: requirements gathering and analysis, technical scoping, and preparing commercial proposals for clients.
    • Led development on Simbiz lab as Senior Full-Stack / Team Lead - eight microservices, RAG pipelines, CI/CD and monitoring.

    Agency team + client-side stakeholders

    • Laravel
    • Yii2
    • PHP
    • Node.js
    • React
    • Vue
    • FastAPI
    • Python
    • YOLO
    • PostgreSQL
    • MySQL
    • Docker
    • Stripe

  3. paynovate.com (Belgium) - a banking platform - and the Legato app project for music schools.

    • Planned the microservice architecture.
    • Admin panel work, backend transaction handling, and integration across multiple microservices.
    • Designed and built the Legato app from scratch on React Native / Laravel for music schools.

    Paynovate Bank 50+ · Legato App 5+

    • Laravel
    • TypeScript
    • TypeORM
    • MySQL
    • React Native
    • Linux
    • Bash

  4. A travel platform with a user-facing side and an admin panel for content, user and analytics management - rebuilt on a microservice architecture for scalability and fault tolerance.

    • Redesigned the project architecture by introducing a microservice approach, improving scalability.
    • Optimised MySQL queries for high-load performance, measurably speeding up the system.
    • Fully rewrote the frontend (Vue 2 / jQuery), improving load times and UX.
    • Hardened security against SQL injection, XSS and CSRF; improved error logging and monitoring.
    • Automated data processing, reducing server load.

    2 Senior Full-Stack · 1 Backend · 1 PM · 1 QA

    • Laravel
    • PHP
    • Vue 2
    • jQuery
    • MySQL
    • Redis
    • Docker
    • REST API
    • WebSockets

  5. 4over4.com - a US printing company serving marketing needs. Work under NDA.

    • Set up site analytics from scratch - Google Analytics, User Analytics, PostHog.
    • Migrated the backend from Core PHP to CodeIgniter/jQuery, and from Core PHP to Laravel/React.
    • Rewrote the interface with a new UI and refactored the frontend.

    3 Full-Stack · 3 Backend · 2 PM · 1 QA

    • Laravel
    • TypeScript
    • React
    • MySQL
    • Core PHP
    • CodeIgniter
    • jQuery
Shipped, in production

Selected work

Simbiz lab

Education platform on a microservice architecture: courses, assignments, chat, analytics, content library, payments, RAG/LLM content generation and S3 (MinIO) media storage. Led development of eight services as Team Lead.

  • Microservices
  • LangChain + FAISS
  • CI/CD
  • Prometheus/Grafana
  • MinIO

YAVVI AI

Domain-agnostic computer vision platform for video stream analysis - detection and tracking pipeline feeding an LLM decision layer. First vertical: gas station event detection and on-site analytics.

  • YOLO
  • ByteTrack
  • ONNX
  • FastAPI
  • LLM

cloudcompute.ru

cloudcompute.ru

Cloud GPU rental platform for AI/ML workloads - RTX 4090, H100 and A100 instances with hourly billing, personal account and invoicing.

  • GPU cloud
  • Billing
  • Personal account

Russian Express

r-express.ru

Tour operator web platform: VIP tour booking, agent personal account, and integrations with providers across the UAE, Maldives, Seychelles and beyond.

  • Travel
  • Provider integrations
  • Agent portal

Paynovate

paynovate.com

Belgian banking platform - microservice architecture planning, backend transaction handling, admin panel and cross-service integration.

  • Fintech
  • Microservices
  • Transactions

Panika

panika.org

Real-life escape-room booking platform in Krasnodar: quest catalogue, online session booking and a personal account.

  • Booking
  • Catalogue
  • Payments

Taekwondo CV

Computer vision system for taekwondo built on YOLO/Ultralytics - athlete motion detection and tracking for automated technique analysis and scoring.

  • YOLO
  • Ultralytics
  • Motion tracking

Legato

App for music schools, designed and built from scratch on React Native and Laravel - scheduling, students and lesson management.

  • React Native
  • Laravel
  • From scratch
Contact

Let us build something

Have a platform to architect, a legacy system to modernise, or an AI product to get into production? I am happy to talk it through.

Write to me LinkedIn
  • Yerevan, Armenia · GMT +4
  • Open to CTO, architecture and senior full-stack engagements