denis.polyncew.dev
From: Poland
Location: Wrocław
On Useme since 9 June 2026
About me
Senior Software Engineer with 8+ years building production-grade .NET backends and Azure cloud systems across ecommerce and SaaS.
I built ResourcePulse solo — an Azure FinOps SaaS that reviews Infrastructure-as-Code in GitHub pull requests, posting automated cost estimates and AI-powered SKU recommendations as inline PR comments.
Full stack: ASP.NET Core 8, Azure Container Apps, Azure OpenAI, PostgreSQL, Stripe billing, Bicep IaC. Every layer, one engineer.
Previously at Ceneo.pl (one of Poland's largest ecommerce platforms, 4+ years):
- Led GA4 on-prem migration → $15K/year cost reduction
- Built AI-driven query resolution system → 40% efficiency gain
- Angular + .NET full-stack across two product teams
Available for part-time B2B cooperation: backend APIs, Azure architecture, AI/automation integrations, full-stack .NET.
Categories
CV / Résumé
Apr 2026 - Now
Software Engineer
Bergman Engineering
Prebid.js header bidding integration into client-facing pages. Real-time programmatic ad auctions across multiple demand partners to maximize ad revenue yield.
Jan 2026 - Now
Founder & Lead Engineer
ResourcePulse
Solo-built Azure FinOps SaaS. Reviews Bicep/ARM IaC in GitHub PRs, posting cost estimates and AI-powered SKU recommendations as inline PR comments. ASP.NET Core 8, Azure Container Apps, Azure OpenAI, PostgreSQL, Stripe, Bicep.
Jan 2021 - Mar 2026
Software Engineer
Ceneo.pl
4+ years at Poland's largest ecommerce platform. Led GA4 on-prem migration ($15K/yr saved). Built AI query resolution system (+40% efficiency). Reviews optimizations (+25% engagement). Angular + .NET, Azure AKS, Service Bus, Kafka.
Jan 2019 - Dec 2021
Software Engineer
ItDesk sp. z o.o.
Software house. Built call center task board, ERP modules, and tax settlement service for 1000+ foreigners in Germany (60% less filing time). .NET Core, Blazor, SignalR, MSSQL, Docker.
Sep 2018 - Dec 2018
C# Developer
IT Develop
First commercial role. Single-page document processor parsing structured data from HTML to document output. .NET Core, Html Agility Pack, Selenium, Docker.
Portfolio
Solo-built SaaS that reviews Azure Infrastructure-as-Code in GitHub PRs. Posts cost estimates, policy checks, and AI-powered SKU recommendations as inline PR comments. ASP.NET Core 8, Azure Container Apps, Azure OpenAI, PostgreSQL, Stripe.
HackYeah
Top-5 finish out of 50 teams at Poland's largest hackathon. Financzeczka track — built a working financial solution under 24 hours.
AI Smart Review System
AI-powered response system for Ceneo.pl — 40% improvement in user response rate efficiency. Reduced manual intervention at scale. Stack: Azure OpenAI, Prompt Flow, Python, .NET.
GA4 On-Prem Analytics Migration
Migrated Ceneo's analytics from cloud to on-prem. Automated data pipelines replacing GA4 cloud processing. Result: $15K/year cost reduction. Stack: .NET, Azure, Measurement Protocol, GA4 Data API, Google Tag Manager.
Enterprise-grade e-commerce platform: FastAPI backend, Next.js 15 frontend, PostgreSQL. Full cart, checkout, order lifecycle, JWT auth. 90%+ test coverage, Prometheus + Grafana monitoring, Terraform IaC for AWS/Azure, GitHub Actions CI/CD.