Alexander Gusarov

Software Engineer — DevOps · Fullstack · GameDev

Software engineer with 14+ years across DevOps, fullstack and game development. Managed infrastructure for 750+ servers, shipped products with 100M+ users, built everything from CI/CD pipelines to multiplayer backends. I close the full cycle — architecture, code, deployment — and I actually enjoy all of it.

Contacts
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Achievements

  • Operated and automated infrastructure for 750+ Linux servers (Selectel VPS and bare metal) with 99.9% uptime
  • Reduced deploy time from 8 to 2 minutes (−75%) and AWS costs from $550 to $300/month
  • Sand Balls — contributed to a mobile game with 100M+ downloads and top App Store rankings
  • Bhop Jump — built multiplayer backend generating $160K+ revenue in the first quarter
  • Lana and Ronen — 1M+ downloads mobile title
  • Upwork Top Rated Plus — top 5% of freelancers with 20+ successful projects

Experience

InfoScaleDec 2024 — Jan 2026
DevOps Engineer / Software Engineer
  • Monitored and maintained 750+ Linux servers (Selectel VPS and bare metal) — network interfaces, ports, access management, incident response
  • Managed Kubernetes clusters on Yandex Cloud and self-hosted (GitLab, Matrix, Keycloak, Vault); wrote and maintained Helm charts
  • Built Terraform infrastructure for ~20 AWS services ($550 → $300/month); wrote custom modules, provisioned ClickHouse; Ansible for per-instance configuration
  • Optimized CI/CD across multiple repos (GitHub Actions + GitLab CI); unified pipeline structure reduced deploy time from 8 to 2 minutes
  • Built observability stack from scratch — VictoriaMetrics probes, Prometheus alerting, custom Grafana dashboards; Alertmanager integrated with Telegram and Matrix
  • Designed and developed SaaS monitoring service end-to-end (Go + Gin/GORM + React) — ping, domain, SSL checks with configurable intervals (10s–24h); deployed in-cluster on Kubernetes
  • Responded to SSH brute-force attacks via KVM live access, port blocking, user rotation, and timeout configuration
  • Grew infrastructure team from 3 to 6 engineers; mentored 3 junior members
SOFTINTERMOBNov 2023 — Jul 2024
Unity Developer
  • Built two mobile applications from Figma designs to App Store release — full cycle
  • Integrated Firebase and third-party SDKs, resolved compatibility issues on iOS/Android
  • Refactored legacy codebase, improved stability and performance
AZNResearchJul 2022 — Oct 2023
Fullstack Developer
  • Designed frontend architecture for internal government and enterprise products using Angular + Tailwind
  • Developed backend microservices with .NET Core + EF Core, REST APIs and LINQ queries
  • Introduced Git workflow, code reviews and CI pipelines, boosted team productivity by 25%
NeosightNov 2021 — Feb 2022
Game Designer
  • Wrote GDDs for 6 mobile games — core mechanics, monetization, progression systems
  • Ran concept validation experiments, grew installs 30x, CTR from 0.4% to 5%
  • Balanced levels and game curves using retention, difficulty and drop-off metrics
UdemyMar 2021 — Oct 2021
Unity Developer
  • Built a German language learning app from scratch — 22 categories, ~3000 flashcards
  • Optimized architecture and data storage, reduced app size from ~3GB to 400MB
Popside GamesJul 2020 — Oct 2020
Level Designer
  • Designed and balanced 3000+ levels for Match-3 and Solitaire under tight production schedule
  • Improved level completion rate by 15% through iterative testing
SayGamesFeb 2020 — Jun 2020
Game Designer
  • Designed mechanics and levels for hyper-casual prototypes
  • Contributed to Sand Balls (100M+ downloads) and FlowerKing
  • Improved D1-retention by 10% through retention/drop-off metric iterations
GoodlineNov 2019 — Jan 2020
Software Engineer
  • Developed and adapted internal React interfaces for mobile devices
  • Improved performance by 25% through component optimization
Project TechFeb 2017 — Oct 2019
Software Engineer / Co-Founder
  • Co-founded a development studio — hired developers, negotiated with clients, signed contracts
  • Acted as second engineer and tech lead — architecture decisions through to production code
  • Shipped 10+ products — games, mobile apps and business software for restaurants, delivery services and VR
  • Built multiplayer backend for Bhop Jump with a team of two — P2P + dedicated servers up to 16 players, $160K revenue in Q1
  • Pitched publishing deals to indie developers — early experience in product and business development