Zahir Zairli
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C#/.NET Backend Engineer · Warsaw, Poland · open to relocation

C# / .NET developer. APIs, web apps, cloud.

4+ years building ASP.NET Core APIs, web apps and Azure services, plus my own product, AzForeigner, live on web, iOS and Android.

Get in touch Download CV PDF

Debugging

I take problems apart, down to the last line.

Shipping

Then put them back together, better.

See my experience ↓
years of commercial .NET
4+
platforms my own product ships on — web, iOS, Android
3
languages spoken, English at C1
4
Data Science, WSB University
MSc

01 — Experience

Four years of C#: web apps, APIs and Azure.

  1. Jun 2026 — Present Warsaw

    Software Developer at LTM Now

    Nexi Group · payments integration

    I support the .NET integration services that process daily payment transaction batches for multiple European partner banks.

    • C#
    • .NET
    • SQL Server
    • MySQL
    • Batch processing
    • SLA support
  2. Feb 2024 — Jun 2026 Kraków

    Software Developer at LTM

    Microsoft Azure platform engagement

    Development and production support for enterprise .NET applications on Azure, working directly with Microsoft engineering and product teams.

    • Azure Functions
    • App Service
    • Networking
    • Distributed systems
    • RCA
  3. Feb 2023 — Sep 2023 Baku

    Software Developer at Lima Technologies

    Designed and built backend services and RESTful APIs with .NET Core and Entity Framework Core.

    • .NET Core
    • EF Core
    • REST
    • SignalR
    • NUnit
  4. Aug 2022 — Jan 2023 Baku

    Software Developer at NanTech

    Built web applications in C# and ASP.NET, wiring backend services to the frontend.

    • ASP.NET
    • LINQ
    • Entity Framework

02 — Selected work

Things I've built and shipped on my own time.

Own product · live

AzForeigner

A community and services platform for Azerbaijanis living abroad — one place to find a barber, a flat, a roommate or someone who has already been through the visa paperwork.

  • Service marketplace with ratings: restaurants, barbers, rentals, legalisation help
  • Country group chats, Q&A, events and roommate matching
  • Shipment tracking and study-abroad partner listings
  • Web
  • iOS
  • Android
Visit site App Store Google Play

ASP.NET MVC · featured

Online Commercial Automation

A business automation app built in ASP.NET MVC, picked for Murat Yücedağ's “Sizden Gelenler” series showcasing student projects to his Turkish developer audience.

  • ASP.NET MVC
  • SQL Server
Watch the feature

Video walkthroughs

Project demos

A playlist of screen-recorded walkthroughs of the web apps I've built, from early MVC work to recent projects.

  • YouTube
Open playlist

Also: Klan Rebels community blog ↗Demo video #1 ↗Demo video #2 ↗

03 — Toolkit

C# and SQL every day. Azure where it runs.

Backend

  • C#
  • .NET / .NET Core
  • ASP.NET Core
  • ASP.NET MVC
  • Web API
  • LINQ
  • Entity Framework Core
  • SignalR

Architecture

  • REST
  • SOAP
  • CQRS
  • Unit of Work
  • N-tier
  • SOLID
  • Distributed systems
  • Kafka / event-driven

Data

  • SQL Server
  • MySQL
  • Azure SQL
  • Query optimisation
  • Indexing

Cloud & delivery

  • Azure Functions
  • App Service
  • Static Web Apps
  • Docker
  • Git / GitHub

Quality

  • NUnit
  • Unit testing
  • Postman
  • Swagger / OpenAPI
  • Code review
  • Scrum

Frontend

  • JavaScript
  • React

Education

  • MSc, Data Science · WSB University, Poland, 2023 — 2025
  • BSc, Computer Science · Baku State University, Azerbaijan

Languages

  • Azerbaijani · Native
  • Turkish · C2
  • English · C1 · professional
  • German · A1

Certificates

  • Azure Fundamentals · QA
  • C# · LinkedIn
  • Full Stack Web Development · MilliSoft

04 — Play

Bugs incoming. Don't let them reach prod.

Squash every bug before it crawls into production. Leave the ✨ features alone, they're supposed to ship. 30 seconds, and five prod incidents ends the sprint early.

Score0
Combo×1
Incidents0/5
Best0

MINI-GAME · BUG SQUASH

Fix it before Friday.

  • 🐛 Click a bug to squash it. Squash in a row to multiply your score.
  • 🪲 Legacy bugs take three hits. 👀 Heisenbugs move when you look at them.
  • ✨ Features aren't bugs. Let them ship for bonus points.

RELEASE SHIPPED ✓

Senior debugger

Need bugs fixed for real? Let's talk

05 — Contact

Hiring for a .NET backend role? Let's talk.

Based in Warsaw and open to relocation. The fastest way to reach me is email — I reply within a couple of days.

Or leave a message