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.NET engineer
Backend Lead

I build complete systems on .NET and lead backend development. I use AI and Codex agent pipelines to deliver under tight deadlines — from architecture and code to deployment and observability.

My foundation: 14+ years of engineering, cross-platform desktop products, rendering optimization, and technical leadership.

  • .NET / C#
  • Backend Lead
  • AI / Codex
Sergey Mikolaitis

Sergey Mikolaitis

From architecture to production.

years of .NET engineering
14+
Backend, desktop, and performance
years as a team lead
8+
Since July 2018
people in the team I led
10–12
Engineering, QA, and product together
  1. 2012–2014TOP Computer Academy.NET Teacher
  2. 2012–2015FlexBricks.NET Developer
  3. 2013–2020LaitisFounder & Developer
  4. 2016–2017Arkadium.NET Developer / PreSenior .NET Developer
  5. 2018–2019360boundSenior → Lead .NET Developer
  6. 2019–2026Icons8Team Lead & Product Owner
  7. 2026 →MOODFORGE StudioLead Backend Developer

2026

9,642 commits+11,088,311−4,970,846

LessMore

My current focus is backend engineering: ASP.NET, data, real-time communication, and complete systems built with Codex agent pipelines. That builds on years of desktop engineering, performance work, and hands-on leadership.

  • C#Core strengths
  • .NET 6+Core strengths
  • ASP.NETCore strengths
  • Entity FrameworkCore strengths
  • SignalRCore strengths
  • PostgreSQLCore strengths
  • DockerCore strengths
  • CI/CDCore strengths
  • CodexCore strengths
  • AvaloniaUICore strengths
  • WPFCore strengths
  • MVVMCore strengths
  • Performance TuningCore strengths
  • Zero-Allocation OptimizationCore strengths
  • MultithreadingCore strengths
  • Concurrency DebuggingCore strengths
  • WebSocketsCore strengths
  • LINQCore strengths
  • TPLCore strengths
  • JSONCore strengths
  • SVGCore strengths
  • XMLCore strengths
  • SkiaCore strengths
  • Clean CodeCore strengths
  • RefactoringCore strengths
  • MsSqlStrong working knowledge
  • SqliteStrong working knowledge
  • LiteDBStrong working knowledge
  • S3Strong working knowledge
  • CDNStrong working knowledge
  • DNSStrong working knowledge
  • GitStrong working knowledge
  • LinuxStrong working knowledge
  • MacOSStrong working knowledge
  • RESTStrong working knowledge
  • Memory Dump AnalysisStrong working knowledge
  • OpenCodeStrong working knowledge
  • LLMStrong working knowledge
  • MCPStrong working knowledge
  • MsStoreStrong working knowledge
  • AppStoreStrong working knowledge
  • GrafanaStrong working knowledge
  • PrometheusStrong working knowledge
  • ScrumLeadership and product
  • AgileLeadership and product
  • Code ReviewLeadership and product
  • Team LeadershipLeadership and product
  • Product OwnershipLeadership and product
  • Decision-MakingLeadership and product
  • Strategic VisionLeadership and product
  • Development Process DesignLeadership and product
  • People ManagementLeadership and product
  • Team ManagementLeadership and product
  • Technical DocumentationLeadership and product
  • Product Quality OwnershipLeadership and product
  • Requirements ManagementLeadership and product
  • Technical Debt ManagementLeadership and product
  • AWSAdditional experience
  • ProtobufAdditional experience
  • Objective-CAdditional experience
  • WASMAdditional experience
  • PipesAdditional experience
  • WinAPIAdditional experience
  • ShadersAdditional experience
  • NuGetAdditional experience
  • NginxAdditional experience
  • JSEarlier experience
  • HTMLEarlier experience
  • CSSEarlier experience
  • PHPEarlier experience
  • SQLEarlier experience
  • SharepointEarlier experience
  • OracleEarlier experience
  • GraphQLEarlier experience
  • FFMPEGEarlier experience
  • VLCEarlier experience
  • OpenGLEarlier experience
  • DirectXEarlier experience
  • CEarlier experience
  • C++Earlier experience
  • WCFEarlier experience
  • ADO.NETEarlier experience
  • WinFormsEarlier experience
  • UWPEarlier experience
  • IISEarlier experience
  • LuaEarlier experience
  • JavaEarlier experience
  • SOAPEarlier experience
  • Apache KafkaFamiliar technologies, no production experience
  • ClickHouseFamiliar technologies, no production experience
  • RabbitMQFamiliar technologies, no production experience
  • MongoDBFamiliar technologies, no production experience
  • gRPCFamiliar technologies, no production experience
  • KubernetesFamiliar technologies, no production experience

Systems built. Products shipped.

Current backend work and the desktop products that shaped my engineering. Architecture, performance, and delivery in practice.

Backend Lead · Jul 2026–Present

MOODFORGE Studio

A complete game backend, built under tight deadlines.

Built the authentication server, game meta-server, markets, chat, Unity instance orchestrator, and observability stack single-handedly. Used AI and Codex agent pipelines to move from architecture to working services quickly.

Deployed GitLab, CI/CD pipelines, and the backend on Yandex Cloud. Technical ownership includes implementation, delivery, and visibility into production behavior.

My role and responsibilities
Authentication
Game meta-server
Markets
Chat
Unity orchestration
Observability

Icons8 · 2019–2026

Lunacy

From a Windows app to a cross-platform design tool.

Led engineering and product. Migrated WPF to Avalonia, rebuilt rendering around the GPU, shipped on Windows, macOS, and Linux, and launched a WebAssembly (WASM) version.

faster GPU rendering, up to
100×
for the Avalonia migration
6 months
Inside the engineering

Independent product

Laitis

Voice control that gives people more independence. Built the desktop app, browser extensions, API, and distribution as a solo founder.

Supporting users with disabilities for over 10 years.

Meet Laitis

Arkadium · 2016–2017

Microsoft Casual Games

Familiar Windows games, serious engineering challenges. Crash dumps, memory leaks, concurrency bugs — and up to 5× faster Mahjong startup.

Engineering at scale

FlexBricks · 2013–2014

Orbital Video

A player, a recording system, and an editor built from scratch. Recording from up to 32 cameras, real-time angle switching, and native Windows and macOS players.

Explore the 360° story

Beyond the implementation.

15+

Recommendations

From teammates, managers, and QA colleagues who worked alongside me for years.

Read their perspective

Mathematics & Computer Science

A master’s degree, years of teaching, and a habit of understanding things from the foundations.

Education & background

Several operating systems, every day

I use 4–5 computers with different operating systems at the same time. Windows, macOS, and Linux are part of my everyday development and testing setup.

My working environment

Have a hard problem?
I’m listening.

A .NET backend to build, a complex system to untangle, or a team that needs technical direction. Let’s discuss how to get it into production — with practical AI-assisted engineering.

Write on Telegram s@mklts.com

GMT+3
Calls: 12:00–20:00

All contact details