Олександр

Oleksandr Shtohryn
DevOps Engineer | Backend | Python Developer | Ivano-Frankivsk, Ukraine | [open contact info](look above in the "contact info" section) |
[open contact info](look above in the "contact info" section) | FreelanceHunt (Top 50 Python)

Professional Summary

Backend / Python Developer with 5+ years of commercial experience specializing in full-cycle
development: from backend implementation to deployment automation and infrastructure management.
Experienced in building scalable Flask-based backend systems from scratch, implementing automated CI/CD
pipelines, and managing production infrastructure. Proven track record working with Jenkins, GitLab CI,
GitHub Actions, Ansible automation, Docker containerization, and cloud deployments. Deep understanding of
telecom systems including network equipment configuration, industry-standard protocols, and complex
network infrastructures.

Work Experience

DevOps & QA Engineer — Inango (June 2025 – end of December 2025, Full-time)

Maintained and optimized Jenkins CI/CD pipelines for automated testing and deployment, including
creation of new pipeline jobs.
Developed and maintained Ansible roles for service deployment, environment configuration, and
infrastructure automation.
Managed Ansible inventory files for multi-environment deployments.
Implemented GitLab CI/CD workflows with merge requests and automated testing stages.
Created multi-stage Docker builds and automated build processes using Makefiles.
Worked with telecom-related systems and network equipment, using industry-standard configuration tools
for device management.
Built comprehensive test infrastructure using Pytest and Robot Framework for RPC-based testing, traffic
generation, and network service validation.
Performed manual validation of feature builds using CLI tools and configuration interfaces, testing new
firmware images before deployment.
Performed testing of QoS and various network protocols on telecom equipment.
Configured and troubleshot complex networking setups including routing, VLANs, tunnels, and service
configurations.
Collected and analyzed system logs using syslog for debugging and monitoring purposes.

Backend Developer — Alara Dental (May 2025 – June 2025, Part-time)

Developed backend for a dental services price aggregation platform using Python and Flask.
Implemented web scrapers and parsers to collect and normalize pricing data from multiple external sources.
Designed data comparison and normalization logic for consistent service representation.
Built RESTful APIs for displaying aggregated offers and enabling order placement.
Implemented GitHub Actions for automated testing and deployment.
Focused on system reliability, data consistency, and performance optimization.

Backend Developer → Team Lead — Perevozka.global (2024 – Present)

Backend Developer (2024 – May 2025, Full-time)

Developed backend services using Python (Flask) with focus on REST API design and implementation.
Designed and maintained RESTful APIs for logistics platform with proper authentication (JWT, cookies).
Worked with SQL (MySQL) and NoSQL (MongoDB, Redis) databases.
Implemented automated testing using Pytest for API endpoints and business logic validation.
Set up GitHub Actions for CI/CD automation including testing and deployment workflows.
 Managed Git workflows with feature branches, pull requests, and code reviews.
Performed API testing and debugging using Postman and browser developer tools.
Deployed and managed Dockerized applications on Linux servers.

Promoted to Team Lead (June 2025 – Present, Part-time)

Architected and built entire production infrastructure from scratch including:
CI/CD pipeline with parallel jobs, optimized to 10-minute deployment cycle
Zero-downtime deployment strategy with tag-based releases from production branch
Automated daily database backups with retention policy
Complete monitoring stack (Grafana + Prometheus + Loki) for system observability
VPN infrastructure with role-based access control (management vs admin tiers)
Split tunneling configuration for secure internal service communication
Led technical decision-making on architecture, database design, security, and deployment strategy.
Managed Git-based workflows including branching strategies, pull requests, and release management.
Ensured code quality through reviews, testing standards, and best practices enforcement.

Freelance Developer (May 2020 – 2024)

Designed and deployed WebSocket servers for online multiplayer games, ensuring real-time
communication with minimal latency and scalable broadcasting logic, handling 10K+ concurrent
connections with Redis pub/sub model and async architecture.
Created backend assistant tool for ITG company for logistics: document parsing, automated calculations,
analytics using Pandas; includes deployment and server automation.
Implemented scalable REST APIs with JWT-based auth, rate limiting, and logging.
Built an AI-based Instagram photo analyzer to detect engagement metrics and automate post filtering via
computer vision and machine learning models.
Developed cryptocurrency monitoring tools for blockchain automation with secure transactions.
Created advanced data parsers and automated dashboards for analytics.

Technical Skills

Backend Development DevOps & Infrastructure

Python (5+ years) CI/CD: Jenkins, GitLab CI, GitHub Actions
Flask (production backend) Ansible (roles, playbooks, inventory)
System Architecture & Design Docker (multi-stage builds, production)
REST APIs, WebSockets Kubernetes (hands-on experience, deployed test
PostgreSQL, MySQL, MongoDB, Redis environments)
Pytest (unit, integration, API testing) AWS (EC2, container deployment, networking)
Git workflows (GitLab, GitHub)
Networking
Linux administration
VPN, routing, VLANs, tunneling Bash scripting, Makefiles
Telecom network equipment
Network configuration protocols and tools Monitoring & Tools

QoS and network protocol testing Grafana, Prometheus, Loki
Syslog
Postman, browser debugging tools

Testing & QA

Pytest — Backend API testing, unit tests, integration tests
Robot Framework — Automated testing infrastructure for telecom devices
Manual Validation — Feature builds testing using CLI tools and configuration interfaces for firmware
verification
API Testing — Postman for manual and automated API validation
Network Testing — RPC-based testing, traffic generation, protocol validation
Recent Self-Learning & Cloud Experience

Kubernetes & AWS (2025): Self-taught container orchestration and cloud deployment
Deployed Flask applications to AWS using Kubernetes
Hands-on experience with pods, services, deployments, ingress controllers
AWS infrastructure setup: EC2, networking, IAM, container deployment
Focus: Expanding from on-premise Docker deployments to cloud-native architecture

Soft Skills

Problem-solving | System Design | Technical Leadership | Self-motivated | Fast Learner | Attention to Detail |
Cross-functional Collaboration

Languages

Ukrainian — Native
Russian — Fluent
English — Upper-Intermediate (strong reading/writing, conversational speaking)

Education

Ivano-Frankivsk National Technical University of Oil and Gas
Master's Degree in Software Engineering — 2024-2025
Lviv Polytechnic National University
Bachelor's Degree in Computer Science (CAD / SAPR) — 2020-2024