Hire the Best Demandware Developers
in Bulgaria

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Deyan M.

Sofia, Bulgaria

$34/hr
5.0
10 jobs

Building products end to end — architecture, backend, frontend, deployment — and staying involved long enough to make sure they actually work in production. Most of my recent work has been with early-stage and growth-stage companies where I was the person making the technical decisions, not just executing them. That includes a tournament platform that reached thousands of users within weeks of launch, a live locker booking system with real-time availability and payment integration, and an AI-powered trading assistant built on the Claude API with structured market analysis and Telegram notifications. I work across the full stack: Backend: Laravel, Django, Python Frontend: SvelteKit, React, React Native Databases: PostgreSQL, MySQL, MSSQL Infrastructure: Docker, CI/CD pipelines, AWS, Azure AI: Claude API integrations, multi-agent workflows, agentic automation Portfolio: dev.metchev.net Beyond development, I help teams with architecture planning, codebase audits, Git workflows, and technical hiring. PMI-ACP certified — useful when delivery structure matters alongside the technical work. I have worked with enough non-technical founders to know that the technical explanation is rarely what they actually need. What matters is whether the product does what it should, on time, without surprises. If that sounds like the kind of person you are looking for — reach out.

  • Demandware
  • MySQL Programming
  • Indexing
  • OpenStreetMap
  • Data Scraping
  • Java
  • PHP
  • jQuery
  • Laravel
  • Yii
  • Angular 10
  • Svelte
Ilia Y.

Varna, Bulgaria

$120/hr
5.0
4 jobs

I’m an AdTech Solutions Architect with 6+ years of hands-on experience building, scaling, and optimizing monetization infrastructure for publishers. I’m also the Co-Founder & CEO of Monetumo—an AdTech company focused on full-stack monetization, demand integrations, and yield optimization. I don’t just manage ads—I design and implement complete programmatic ecosystems. Core Expertise: Architecture & Strategy End-to-end monetization stack design (Web & App) GAM network structuring & scalable inventory architecture Revenue optimization strategy across AdX, Open Bidding, and Prebid SSP selection, onboarding, and performance tuning Programmatic & Header Bidding Prebid.js & Prebid Server (client + S2S setups) Advanced auction mechanics (bid density, timeout strategy, concurrency) Floors strategy (dynamic + rule-based) ORTB2, schain, and signal optimization Ad Operations (Execution at Scale) Google Ad Manager (GAM 360-level setups) Line item architecture, bulk trafficking, automation workflows Troubleshooting delivery issues, discrepancies, and policy flags Native, display, video, and custom creative implementations Technical Implementation Custom Prebid wrappers & deployment strategies Lazy loading, refresh logic, and viewability optimization CLS-safe ad integrations and UX-aware layouts Deep debugging (auction requests, bid responses, render pipeline) Yield & Performance Optimization RPM, fill rate, and latency optimization Viewability tuning (~80%+ targets) Demand diversification & SPO strategies Continuous A/B testing of monetization logic What makes me different I operate at architecture level, not just AdOps execution I’ve built and run a real AdTech business, not just managed accounts I understand both publisher economics and demand-side mechanics I focus on scalable systems, not one-off fixes If you need someone who can design, fix, or scale your entire monetization stack—not just tweak settings- we should talk.

  • Microsoft Office
  • Data Entry
  • Customer Service
  • Google Sheets
  • CRM Software
  • Google Ad Manager
  • Search Engine Optimization
  • Google AdSense
  • Marketing Strategy
  • Digital Marketing Strategy

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