RENDER_MODE: STATIC_FALLBACK // GPU_OFFLINE
SERGEY ZHUKOV
Lead Software Engineer
PERKS
SELECT PERK
CORE_SKILL_TREE
System Architecture60%
Go (Golang)58%
Python / FastAPI70%
Next.js / React65%
Flutter25%
PostgreSQL / Redis67%
Docker / K8s / CI/CD52%
Web3 / Solidity46%
Linux / DevOps68%
C++ / Qt40%
Pentesting42%
MISSION HISTORY
CHRONOLOGICAL_LOGS // CLASSIFIED
LEADERSHIP & ARCHITECTURE
Aug 2023 - PRESENT
Lead Software Engineer
OTHERCODE
TEAM
9 Devs
RETENTION
+25%
THROUGHPUT
40k/h
Full-cycle management of microservice, high-load, and blockchain projects.
»Developed a social network with a smart feed (LightFM), video calls (WebRTC), and paid subscriptions (Next.js, Flutter, FastAPI, Golang).
»Architected a video processing service (background 360p-1080p transcoding) and overall microservices ecosystem.
»Created an industrial product labeling system (Flutter, Golang) processing 40,000 units/hour with autonomous capabilities.
»Implemented the architecture and Solidity smart contracts for an EEG cognitive activity blockchain platform with crypto rewards.
»Maintained firmware for coffee roasting equipment (Qt, C++), reducing errors by 40% through automated testing implementation.
INDEPENDENT CONTRACTOR
2017 - PRESENT
Full Stack Freelancer
UPWORK / TOPTAL
PROJECTS
40+
RATING
4.7
CLIENTS
10+
Custom end-to-end commercial solutions (e-commerce, crypto platforms). Deep expertise in legacy migrations and automation.
»Developed a crypto cashback platform for coffee shops, successfully migrating the backend from legacy PHP to Django (DRF) and Web3.py.
»Accelerated API responses by 3x and integrated automated tests, deploying the testnet across 5 partner locations.
»Automated an E-Commerce store with two-way 1C database sync, slashing catalog update time from 4 hours to just 20 minutes.
»Delivered a turnkey cosmetics store on OpenCart with 2,000+ products, boosting Google PageSpeed score from 45 to 95.
ANALYTICS & OPTIMIZATION
Nov 2022 - Aug 2023
Senior Backend Developer
REPUBLIC IT
RESP
<150ms
INSTALLS
1500+
SLA
99.8%
Architected and developed a high-load backend for a dating app from scratch. Led a mini-team and built CI/CD pipelines.
»Designed a FastAPI backend: async websockets, JWT authorization, and integration with PostgreSQL and Redis.
»Engineered a user recommendation algorithm (based on geolocation/activity), cutting DB query times from 2s to 300ms.
»Integrated real-time WebSocket chats supporting text, geolocation, and rapid image sharing.
»Configured GitHub Actions CI/CD for auto-tests and Docker deployment; mentored the team, advancing one dev to DevOps.
INFRASTRUCTURE & DEVOPS
Dec 2020 - Jul 2022
Full-Stack Developer
YADRO
RAM
-4x
BUILD
5s
ERRORS
-70%
Contributed to infrastructure services, high-load report generation, and internal performance monitoring tools.
»Rewrote a heavy report microservice from Python to Go (Gin), reducing RAM usage by 4x and cutting processing time from 1 min to 5s.
»Developed a web-based requirements management platform, reducing physical document approval times to 2 hours (70% fewer errors).
»Identified database N+1 issues via Prometheus metrics and optimized average UI response times by 25%.
INFRASTRUCTURE & DEVOPS
Feb 2017 - Dec 2018
SRE / DevOps Engineer
LIVELINUX
SERVERS
40+
SLA
99.5%
OS
Linux
Ensured infrastructure fault tolerance, in-depth security, and zero-downtime CI/CD automation.
»Maintained a 99.5% SLA, deploying a Prometheus+Grafana monitoring stack that reduced MTTD (Mean Time To Detect) by 30%.
»Automated Bash/Python backup routines with GPG encryption and resilient uploading to S3 (Yandex Object Storage).
»Cut brute-force load by 80% using custom Fail2Ban and iptables rules; engineered secure IPv6 and VLAN configurations.
»Administered GitLab CI pipelines achieving secure, zero-downtime deployment cycles.
EDUCATION INIT
MASTER'S IN INFO SECURITY // 2019-2021 BACHELOR'S IN CS // 2015-2019