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RECRUITER BRIEF / 01

George Hadjisavva

Backend Engineer

I build reliable backend systems, integrations, and data-heavy products, with 7+ years of experience across high-traffic platforms, telecom, and independent product work.

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Location
Cyprus
Timezone
EU time · EET / EEST
Status
Open to backend engineering rolesGo · distributed systems · integrations

02SKILLS / HONESTLY GROUPED

The stack,
with context.

Depth matters more than logo count. These groups separate recent production tools from broader project experience and active exploration.

01

Primary

Core tools in recent production and independent work.

  • Go
  • PHP / Laravel
  • REST APIs
  • PostgreSQL
  • Redis
  • RabbitMQ
  • Docker
  • Git
  • Codex CLI / Claude Code
02

Comfortable

Used across shipped products and professional teams.

  • Python
  • JavaScript
  • TypeScript
  • React
  • MySQL
  • Elasticsearch
  • MongoDB
  • Kubernetes
  • AWS S3
  • ELK / Graylog
03

Familiar

Applied in earlier work, side projects, or active exploration.

  • Java / Spring Boot
  • LangGraph
  • AI agents
  • MCP
  • Tailwind CSS

03EXPERIENCE / 7+ YEARS

Built in
production.

From telecom operations to high-traffic platforms, messaging infrastructure, and independent backend systems.

  1. 04

    Oct 2025 — Present

    Independent

    Backend Systems Engineer

    Backend integrations and automation for multiple companies.

    • Build Go-based synchronization and automation systems spanning ERP, e-commerce, and backend workflows.
    • Design multi-tenant product, inventory, pricing, and order synchronization for ERP-to-Shopify integrations.
    • Develop asynchronous data pipelines with APIs, PostgreSQL, Redis, queues, and AI-assisted automation.
    • Collaborate with digital agencies to build internal tools and AI-powered workflows tailored to their operations.
  2. 03

    Apr 2024 — Oct 2025

    Intergo Telecom · SMS.to

    Backend Developer

    Messaging infrastructure and service-oriented backend systems.

    • Refactored monolithic code into service-oriented components to improve isolation, maintainability, and scale.
    • Built a Go microservice using goroutines and channels for asynchronous bulk-data processing.
    • Introduced RabbitMQ-based event flows across services and delivered Laravel APIs from business requirements.
  3. 02

    2020 — 2024

    Aylo · formerly MindGeek

    Software Developer

    High-traffic platform engineering in a large-scale product environment.

    • Developed backend features and services for workloads reaching 30k requests per second.
    • Built Laravel microservices and Go backend services for high-throughput processing.
    • Improved search latency through caching, query rewrites, and index optimization; monitored production through Kibana and Sentry.
  4. 01

    Apr 2019 — Jul 2020

    Cablenet Telecommunications

    Software Developer

    Telecom operations software and billing-system migration.

    • Worked across the full delivery lifecycle, from requirements through deployment.
    • Helped build an automated fibre-optic provisioning system with Spring Boot and Symfony.
    • Contributed to an Oracle billing migration alongside Oracle and Intrasoft teams.

04SELECTED WORK / CORPORATE + INDEPENDENT

Selected work,
with context.

Production systems from professional teams, alongside independent products I designed and built.

01 / PROFESSIONAL SYSTEMS

Corporate work

Described at a safe level to respect confidentiality.

AYLO · PRODUCTION

High-traffic platform services

Backend features, Laravel microservices, and Go services supporting workloads reaching 30k requests per second, with production monitoring and search-performance work.

  • Go
  • Laravel
  • Elasticsearch
  • Kibana
  • Sentry

SMS.TO · PRODUCTION

Asynchronous messaging infrastructure

A Go bulk-processing service and RabbitMQ event flows designed to decouple services and handle asynchronous workloads more cleanly.

  • Go
  • RabbitMQ
  • Laravel
  • Microservices

CABLENET · INTERNAL SYSTEM

Fibre provisioning & billing migration

Operational software for automated fibre provisioning, plus engineering support for a multi-party Oracle billing-system migration.

  • Spring Boot
  • Symfony
  • Oracle

02 / INDEPENDENT PRODUCTS

Projects I built

Selected products spanning AI governance, research, backend automation, and public data.
01

AI GOVERNANCE · CURRENT

Decree — Human Approval Platform

Decree is a centralized human-approval layer for AI agents and automated workflows. It evaluates actions against company policies and returns allow, require-approval, or block decisions — integrating with n8n, LangGraph, custom agents, and webhooks.

  • Golang
  • Redis
  • React
  • LangGraph
  • Webhooks
CASE STUDY ↗LIVE ↗
02

AI RESEARCH PLATFORM · LIVE

Problem Miner — AI-Powered Problem & Demand Discovery

A system that automatically collects, analyzes, and ranks real user problems from Reddit to uncover startup opportunities with measurable demand. Designed for indie hackers and AI founders validating product ideas.

  • Reddit data
  • AI analysis
  • Demand ranking
  • Product research
CASE STUDY ↗LIVE ↗
03

BACKEND AUTOMATION · PRODUCTION

Shopify Stock Synchronization App

A high-performance synchronization tool written in Go that automates daily stock updates between stock control systems such as Powersoft and Esoft and Shopify. It saves time, removes manual errors, and keeps inventory accurate across platforms.

  • Go
  • Shopify
  • Powersoft
  • Esoft
  • CLI automation
CASE STUDY ↗
04

DATA PLATFORM · PRODUCTION

Symvaseis.cy — Cyprus Public Procurement Explorer

A platform that aggregates and normalizes Cyprus public procurement data, making tenders and awarded contracts easier to search and explore. It provides visibility into government spending, contracting authorities, winning companies, award values, and historical procurement activity.

  • Data ingestion
  • Normalization
  • Search
  • Public procurement
CASE STUDY ↗LIVE ↗

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