Олександр

SERKIZ OLEKSANDR
Ukraine (Remote) · [відкрити контакти](див. вище в блоці «контактна інформація») · Telegram: @kto_ya_01

PROFESSIONAL SUMMARY

Results-driven Junior DevOps and Backend Engineer with 2+ years of hands-on experience administering Linux and Windows Server environments and building production-grade Python web applications. Proven ability to automate infrastructure workflows, deploy containerized services on AWS, and bridge the gap between development and operations using Docker, Terraform, and CI/CD pipelines. Seeking a remote role where engineering discipline and full production ownership drive real product impact.
TECHNICAL SKILLS

Languages
Python, Bash
Backend
Django, Django REST Framework (DRF), Celery
Cloud & Infra
AWS (EC2, IAM, RDS, S3, CloudWatch), Terraform (modular)
Containers & Deploy
Docker, docker-compose, Nginx
CI/CD
GitHub Actions
OS & Admin
Linux (Ubuntu/CentOS), Windows Server
Networking
TCP/IP, VLANs, VPN, Firewall rules, HTTP/S
Tools
Git, cron, PostgreSQL
Familiar with
Kubernetes (coursework)
Languages (spoken)
Ukrainian (native), English (B1), Russian
PROFESSIONAL EXPERIENCE

System Administrator
Yukoil, Ukraine · Jul 2023 – Jul 2025
Oil sector · On-premises and hybrid infrastructure · ~100 users supported
• Administered 5 on-premises and cloud servers (Linux and Windows Server), supporting approximately 100 local and remote users across office and remote environments
• Identified a critical gap in equipment tracking and independently designed and built an internal inventory management system (Django + PostgreSQL), adopted company-wide by all department heads — eliminating manual spreadsheet processes and data inconsistencies
• Built a REST API layer (DRF) powering a manager-facing IT request portal and a department-head equipment request interface, replacing ad-hoc email workflows
• Developed multiple Telegram bots to automate recurring operational tasks, reducing manual workload across departments
• Configured and maintained VLANs, firewall rules, and VPN connections, securing internal network infrastructure across office and remote environments
• Investigated and resolved incidents across OS, network, and application layers, maintaining service continuity during night shifts and on-call rotations
• Managed user accounts, permissions, and access controls across internal systems, ensuring consistent security posture
• Automated recurring administrative tasks using Python and Bash scripts, reducing manual operational workload
• Served as the primary liaison between IT, non-technical staff, external vendors, and support teams for escalations

Python Backend Developer
Fintech Startup (confidential) · Remote · Jul 2025 – Mar 2026
5-person product team · Python backend and cloud infrastructure
• Onboarded into an existing Python codebase, diagnosed and resolved legacy bugs, and brought the project to a stable, production-ready state
• Deployed the application to AWS (EC2, RDS, S3) using Terraform with a modular structure, establishing a reproducible and version-controlled infrastructure setup
• Containerized all services with Docker and docker-compose; configured Nginx as a reverse proxy for production
• Automated build and deployment workflows using GitHub Actions, reducing manual deployment effort
• Diagnosed and resolved production incidents through log analysis and application-level debugging
EDUCATION

Bachelor's Degree — Computer-Integrated Technologies
National Technical University "Kharkiv Polytechnic Institute" · Kharkiv, Ukraine · Graduated 2024
CERTIFICATIONS

Certification
Issuer
Date
NDG Linux Unhatched
Cisco Networking Academy
Apr 2024
CCNA Cybersecurity Operations
Cisco Networking Academy
Dec 2022
CCNA: Introduction to Networks
Cisco Networking Academy
Jun 2022
NDG Linux Essentials
Cisco Networking Academy
Jul 2021
IT Essentials
Cisco Networking Academy
2020