ENRU

Egor Rusakov

Backend Developer / Systems Administrator (Node.js, Production)

2,000 RPS99.9% SLA-70% deploy time3× fewer critical incidents

Backend Developer and Systems Administrator with 3+ years of commercial production experience. Strong background in building and maintaining high-load backend services (up to 2,000 RPS), integrating legacy systems, and supporting mission-critical infrastructure with strict uptime requirements. Comfortable working at the intersection of backend development, DevOps, and system administration, with direct responsibility for production stability and business-critical services.

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Contacts

Location:Open to relocation (Georgia)
Phone:+7 (991) 662-75-53
Email:rusegal.dev@yahoo.com
Telegram:@Pogran0

Proof / Domains

CRM/ERP integrationsCall-center critical systemsVideo surveillance (PTZ, WebRTC)Industrial photo verificationLegacy SOAP/JSON transformations

Case Studies

1C ↔ Mango-Office Integration

Problem: Legacy 1C needed reliable high-load integration with telephony platform.

Action: Built a service with JSON filtering, SOAP transformation, retries, and horizontal scaling.

Result: Sustained up to 2,000 RPS and became critical to call center operations.

Enterprise Video Management System

Problem: Needed production backend for video surveillance with PTZ control.

Action: Implemented RBAC, WebRTC streaming, PDF reporting, and real-time device control.

Result: Delivered a stable platform for multi-site surveillance operations.

Laboratory Verification System

Problem: Industry compliance required photo-verification evidence and traceability.

Action: Built ESP32 photo capture, OCR pipeline, and React dashboard for verification.

Result: Compliant, auditable verification workflow in production.

Key Achievements

  • • Developed and deployed a high-load API (up to 2,000 RPS) for integration between 1C (legacy ERP) and Mango-Office.
  • • Built a production-ready video surveillance management system (NestJS, React, WebRTC, RBAC, PTZ control, PDF reporting).
  • • Designed and implemented a laboratory photo-verification system compliant with industry standards (ESP32 in C, Express backend, OCR with Tesseract, React dashboard).
  • • Automated deployment pipelines using Docker, reducing deployment time by ~70%.
  • • Implemented centralized monitoring and alerting, reducing critical incidents by more than 3×.
  • • Maintained production infrastructure with 99.9% uptime SLA.

Top Skills

Node.jsNestJSTypeScriptPostgreSQLRedisRabbitMQDockerLinuxNginxCI/CD

Technical Skills

Backend Development
  • • Node.js, TypeScript, NestJS, Express.js
  • • REST APIs, microservices, WebSockets
  • • JWT, OAuth2 authentication
  • • High-load and asynchronous systems
Databases & Messaging
  • • PostgreSQL, MongoDB, Redis
  • • RabbitMQ
  • • Data transformation and integration (JSON, SOAP)
Systems Administration & DevOps
  • • Linux (CentOS, Ubuntu), Windows Server
  • • Docker, Docker Compose, basic Kubernetes concepts
  • • VMware, Hyper-V, KVM
  • • Nginx, Apache, IIS
  • • Monitoring: Zabbix, CheckMK
  • • Backup, disaster recovery, RAID
  • • CI/CD pipelines
Networking & Infrastructure
  • • TCP/IP, DNS, DHCP
  • • Active Directory (users, GPO)
  • • Mail servers (Postfix, Dovecot)
  • • VoIP and access control systems (Asterisk, access control systems)

Backend Developer / Systems Administrator — Experience

Multisystem — Backend Developer / Systems Administrator
August 2022 – Present
  • • Designed and implemented backend services using Node.js / NestJS.
  • • Built scalable REST APIs and internal services for CRM and ERP integrations.
  • • Implemented authentication, authorization, and role-based access control.
  • • Developed high-load APIs supporting up to 2,000 requests per second.
  • • Integrated external systems and legacy platforms (including SOAP-based systems).
  • • Maintained and developed production infrastructure (Linux & Windows servers).
  • • Administered Active Directory, DNS, DHCP, and mail servers (~200 users).
  • • Implemented monitoring, alerting, and incident response processes.
  • • Managed virtualization environments (VMware, Hyper-V, KVM).
  • • Ensured backup, recovery, and infrastructure fault tolerance.
  • • Worked directly with business stakeholders on critical production issues.
Freelance / Contract Work — Programmer / System Administrator
April 2016 – August 2022
  • • Delivered full-stack and backend solutions for small and medium businesses.
  • • Configured Linux and Windows servers from scratch.
  • • Developed backend services and admin panels.
  • • Worked with JavaScript and C++.
  • • Gained experience in security fundamentals and infrastructure management.

Education

Moscow State Open College (MGOK)
Programmer in Computer Systems (Technician-Programmer)
IT-HUB
Information Security and Protection Technologies

Languages

  • • Russian — Native
  • • English — Upper-Intermediate (B2)

Additional Information

Commercial experience — 3+ years; earlier freelance and private practice alongside education. Used to working with production systems, business-critical services, and environments where downtime directly impacts revenue.

Short HR Version

  • • 3+ years in production backend and infrastructure
  • • High-load APIs up to 2,000 RPS
  • • Legacy integrations, reliability, and cost control
  • • Strong ownership, calm under pressure

Timeline

Aug 2022 – Present
Backend Developer / Systems Administrator
Multisystem. Backend + DevOps responsibilities.
Apr 2016 – Aug 2022
Freelance / Contract Work
Backend, automation, and system administration for SMBs.

SEO

Backend developerSystems administratorHigh-load APIsNode.js / NestJSPostgreSQL / RedisDevOps / Linux

FAQ

What roles are you targeting?
Backend Developer / Systems Administrator / DevOps with production responsibility.
What domains do you have experience in?
High-load APIs, legacy integrations, call-center systems, video surveillance, industrial verification.
What stack do you work with?
Node.js, NestJS, TypeScript, PostgreSQL, Redis, RabbitMQ, Docker, Linux, Nginx.
Are you open to relocation or remote?
Yes. Open to relocation to Georgia and remote opportunities.

Open to relocation (Georgia) and remote opportunities