ENGINEERING DOSSIER / REV. 26Download CV
[ SENIOR SOFTWARE ENGINEER ]CY / 35.1856 N / 33.3823 E

OlegSavelev

Realtime / Transaction-heavy / Applications

Senior Software Engineer specializing in realtime and transaction-heavy applications. I build systems that stay predictable under load: live state, concurrent operations, payments, and settlement logic.

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REALTIME SYSTEMSTRANSACTION-HEAVY APPSCONCURRENCY CONTROLPAYMENTS / SETTLEMENTCYPRUS / OPEN TO RELOCATIONREALTIME SYSTEMSTRANSACTION-HEAVY APPSCONCURRENCY CONTROLPAYMENTS / SETTLEMENTCYPRUS / OPEN TO RELOCATION
01 / SELECTED SYSTEMS

Selected systems

A few products where correctness mattered as much as speed: multiplayer state, settlement logic, analytics, and billing.

SYS / 012026

TON Raids

Founder & Lead Software Engineer

Real-time multiplayer raid game with shared boss mechanics and on-chain settlement logic on the TON blockchain.

  • Designed deterministic server-side combat rules with concurrency controls for simultaneous attacks.
  • Synchronized live raid progress, damage contribution, and rewards using WebSockets, Redis, and PostgreSQL.
  • Enforced economy constraints and exploit prevention rules on the server.
NODE.JS / TYPESCRIPT / WEBSOCKETS / REDIS / POSTGRESQL / REACT / TON
SYS / 022025

TON PvP Game

Founder & Lead Software Engineer

High-load real-time PvP game with instant matchmaking and deterministic on-chain settlement.

  • Built room-based architecture for parallel games and low-latency state synchronization.
  • Implemented idempotent payouts with 100% settlement reliability.
  • Scaled the product from 0 to 350+ active users through organic community growth.
NODE.JS / TYPESCRIPT / WEBSOCKETS / REDIS / POSTGRESQL / TON
SYS / 032025 - PRESENT

BestLanding

Founder & Lead Software Engineer

Multi-tenant SaaS for landing page optimization, experimentation, and conversion analytics.

  • Architected Next.js 15 and Supabase platform with row-level security.
  • Built real-time analytics, A/B testing pipelines, Stripe billing, and background jobs.
  • Optimized Core Web Vitals to achieve < 1s initial page loads.
NEXT.JS / REACT / NODE.JS / TYPESCRIPT / SUPABASE / POSTGRESQL / STRIPE
02 / CAPABILITY MATRIX

Capabilities matrix

I work across the stack, but the common thread is predictable behavior under load.

CAP / 01

Backend & systems

  • Node.js / Fastify / Express / TypeScript
  • REST APIs / GraphQL / event-driven systems
  • WebSockets / Redis / PostgreSQL
  • Background jobs / scheduling / concurrency
  • Caching / rate limiting / observability
CAP / 02

Frontend engineering

  • React / Next.js 14-15 / App Router
  • RSC / Server Actions / SSR / ISR
  • Data-heavy realtime interfaces
  • Tailwind CSS / component systems
  • Core Web Vitals / code splitting
CAP / 03

Cloud & delivery

  • AWS / Google Cloud / Azure
  • Docker / CI/CD pipelines
  • Vercel / Railway / Supabase
  • Playwright / Jest
  • Health checks / logging / metrics
03 / OPERATIONS LOG

Operations log

Production work across infrastructure, marketplaces, and enterprise software.

LOG / 01MAY 2022 - PRESENT

Servers.com

Senior Software Engineer

Mission-critical monitoring and traffic-control systems for a global IaaS platform.

  • Designed realtime dashboards with React, Next.js, TypeScript, and live telemetry streams.
  • Collaborated with backend engineers and network specialists on APIs, data contracts, and reliability.
  • Improved frontend load times by ~30% through data-fetching and architecture optimizations.
REACT / NEXT.JS / TYPESCRIPT / NODE.JS / WEBSOCKETS / REST APIS
LOG / 02MAY 2021 - JAN 2025

Aderoid

Co-Founder & Software Engineer

Marketplace platform connecting offline businesses with online consumers.

  • Built geo-targeted listings and merchant dashboards with realtime inventory synchronization.
  • Implemented Mapbox discovery flows, increasing engagement by ~50%.
  • Optimized PostgreSQL queries and API pagination, reducing response times by ~70%.
NODE.JS / REACT / NEXT.JS / POSTGRESQL / TYPESCRIPT / MAPBOX
LOG / 032018 - 2021

Norbit

Senior Software Engineer

Large-scale enterprise systems for nationwide postal services.

  • Maintained React applications used across 1000+ branches.
  • Built internal tools and shared libraries that increased team delivery speed by ~40%.
  • Worked across backend services, performance optimization, code reviews, and incident resolution.
REACT / TYPESCRIPT / NODE.JS / SQL SERVER / .NET CORE
LOG / 042010 - 2018

Earlier experience

Senior Software Developer

Enterprise systems across public-sector, compliance, e-signature, and insurance products.

  • Developed WPF desktop applications and backend logic for business-critical workflows.
  • Worked with C# and SQL Server in regulated enterprise environments.
C# / WPF / SQL SERVER / ENTERPRISE SYSTEMS
04 / CREDENTIALS

Education & languages

Formal training and working languages.

EDU / 01

Bachelor - Information Systems and Technologies

Moscow Technical University of Communications and Informatics

2012 - 2015
EDU / 02

Specialist Diploma - Software for Computer Science and Automated Systems

Moscow State College of Informatics and Electronic Technology

2008 - 2012
LANG / ACTIVE
English
Professional working proficiency
Russian
Native
05 / DIRECT CHANNEL

Build systems that stay correct under load.

Open to senior engineering roles focused on realtime, transactional, and product-heavy systems.

im@olegsavelev.dev LinkedIn Download CV