sergeo.sss
Open to offers

Sergey Antonov

Senior full-stack engineer: gamedev, backend, frontend and AI.

6+ years shipping commercial software. I build the whole product: ASP.NET Core services and databases, mobile and web clients, Unity games and VR, Python AI automation. I lead teams and take projects from prototype to release. Pick a direction — I'll show what I can do.

6+
years of experience
500M+
installs on shipped titles
4
engineering disciplines
Unity · C#
AI · ML
ASP.NET Core
Python
VR / AR
Backend
Flutter
Frontend
FULL-STACK
6+
years in production
01

Four disciplines — one engineer

Gamedev

Games & VR/AR

Unity 6 / 2022 LTS, DOTS/ECS, render & memory optimization, Addressables, multiplayer. Meta Quest, HTC Vive, HoloLens.

Unity C# ECS / DOTS Zenject UniTask Addressables Photon XR Toolkit ARCore / ARKit URP
Backend

Services & data

ASP.NET Core, REST & SignalR, JWT/OAuth 2.0, receipt validation, RabbitMQ queues. PostgreSQL, MongoDB, Redis.

ASP.NET Core REST API SignalR EF Core PostgreSQL MongoDB Redis RabbitMQ Docker Kubernetes
Frontend / Mobile

Clients & interfaces

Adaptive UI across 30+ device models, production Flutter apps, IAP, push, Google Play & App Store releases.

Flutter Dart iOS / Android uGUI / UI Toolkit JavaScript Node.js HTML / CSS WPF
AI & DevOps

Automation & AI

Python pipeline automation, CI/CD on GitHub Actions and GitLab CI, LLM tooling integrated into team workflows.

Python LLM integrations GitHub Actions GitLab CI TeamCity Yandex Cloud Git / GitFlow Nginx
02

Projects

From my own studio to the biggest publishers. Every card links to the store page.

STEAM ANDROID
100K+

Evitania Online — Idle RPG

↗

Idle RPG for PC and mobile. Full cycle: client, server, monetization, Steam and Google Play releases.

Steam · Google Play · Unity, ASP.NET Core
iOS ANDROID
500M+

Homescapes

↗

One of the largest mobile titles in the world. Client, UI and performance work.

Google Play · App Store
META QUEST
10K+

FormulaX

↗

VR racing for Meta Quest. Optimization: −40% RAM, FPS above target.

Meta Store · Unity, XR Toolkit
META QUEST
100K+

Mutants

↗

VR action for Meta Quest. Led a team of 5, CI/CD on GitHub Actions.

Meta Store · Unity
ANDROID
1K+
Personal project

яВтеме (MyNovSU)

↗

Mobile app for NovSU students: schedule, news, notifications.

Google Play · Flutter
BACKEND API
+21%

IAP Validation Service

↗

Server-side receipt validation on ASP.NET Core: App Store & Google Play integration, profile and leaderboard meta services, RabbitMQ events. Conversion 2.8% → 3.4%.

ASP.NET Core · PostgreSQL · RabbitMQ
API
BACKEND REALTIME
SignalR

Sync Platform

↗

JWT/OAuth 2.0 auth, user profiles and real-time cross-device sync. Redis caching cut API response time several-fold.

ASP.NET Core · SignalR · Redis · Docker
DESKTOP TOOLS
No-code

Level Editor Tools

↗

C#/WPF tooling for content designers: an event-driven architecture lets them extend the game world without engineers.

WPF · C# · MVVM
git
build
LLM
test
store
AI CI/CD
−30%
AI · DevOps

AI Build Pipeline

↗

GitHub Actions CI/CD with Python automation: build, obfuscation, store publishing, an LLM assistant for reviews and changelogs. Releases 30% faster.

Python · GitHub Actions · LLM
LLM AGENT
RAG
LLM

Game Assistant Agent

↗

LLM agent for player support and game-master duties: RAG over the game knowledge base, tool calling (inventory, quests), multilingual replies. Lower support load.

Python · LangChain · OpenAI API · pgvector
ML ANALYTICS
AUC 0.87
ML

Churn & LTV Predictor

↗

Player churn and LTV model on analytics events: session and purchase features, gradient boosting, segmentation for personalized offers.

Python · CatBoost · scikit-learn · Pandas
03

Experience

2026 — now
Disruptive Blast

Disruptive Blast

Senior Unity Developer
  • Architecture of a mobile multiplayer title on Unity 6: ECS/DOTS, Netcode, server authority
  • Addressables content pipeline and cloud builds — updates without store releases
  • Profiling and optimization to a stable 60 FPS on mid-range Android
  • Analytics, A/B testing and LiveOps tooling integration
2024 — 2026
2 years

Immerseas

Lead Unity / .NET Developer
  • Lead a team of 5 engineers — department throughput +35%
  • ASP.NET Core backend: REST, SignalR, JWT/OAuth 2.0, cross-device sync
  • Render & memory optimization: −40% RAM, FPS above target
  • CI/CD on GitHub Actions: 30% faster releases; mentoring cut onboarding from 2 months to 4 weeks
2021 — 2024
3 years

MY GAMES

Unity / C# Developer
  • IAP with server-side validation — conversion 2.8% → 3.4% (+21%)
  • REST meta services: profiles, inventory, leaderboards on PostgreSQL & MongoDB
  • Async event processing via RabbitMQ — lower peak load on the main API
  • Build & obfuscation automation: release from 7 to 2 days
2020 — 2021
1 year

VOODOO

Unity Developer
  • Stable 60 FPS on budget devices after a full render refactor
  • −40% game size via Addressables
  • GitLab CI/CD: build time from 40 to 15 minutes
  • Event-driven architecture — designers extend content without engineers
Playrix
Homescapes

Playrix

Unity Developer
  • Worked on Homescapes — 500M+ installs
04

Education

Master's

Yaroslav-the-Wise Novgorod State University

Computer Science — application development for mobile platforms.

Bachelor's

Yaroslav-the-Wise Novgorod State University

Computer Science — application development for mobile platforms.

05 · Contact

Let's build something big

Open to full-time, part-time and contract work.

© 2026 Sergey Antonov Unity · .NET · Flutter · Python