Oleh

Personal Information
Full Name: Oleh Andrieiev
Age: 23 years old
Citizenship: Ukraine

Contacts
E-mail: [відкрити контакти](див. вище в блоці «контактна інформація»)
Telegram: https://t.me/devleand
LinkedIn: [відкрити контакти](див. вище в блоці «контактна інформація»)

Objective
Looking for interesting projects and a highly professional team that values continuous improvement. I thrive
in environments where I can rapidly grow while contributing to the company’s and the team’s success. My
long-term goal is to progress into a Tech Lead position and take on greater technical leadership
responsibilities.

Technical Expertise
Software engineer with 5+ years of experience building complex systems and scalable applications using
PHP (Symfony, Laravel) and JavaScript/TypeScript (Vue, Nuxt, Node.js). Worked on high-load systems at
Yandex.Eda, delivering backend services and integrations with external businesses.
Played a key role in developing core functionality for a Figma-like graphic editor, including hover states, auto
layout, keyframe animations, and multiplayer optimization for heavy projects. Strong focus on performance,
clean architecture, and large-scale refactoring.
Hands-on experience with Docker, Nginx, MySQL, PostgreSQL, Redis, RabbitMQ, AWS S3, CI/CD pipelines,
and production infrastructure.
Actively growing expertise in DDD, CQRS, Event Sourcing, and architectural patterns for complex domains.
Professional experience in diving deep into debugging to find minor issues in large codebases, showcasing
strong problem-solving and analytical skills.

Tools & Frameworks
Programming Languages: PHP 7/8, JS/TS, HTML/CSS (SCSS/LESS), SQL, Python (basic), Ruby/Rails (basic),
Go (basic), Java (basic)
Frameworks & Libraries: Symfony, Laravel (basic), Node.js, Nuxt, Vue 2/3, Jest, jQuery, PrimeVue, React
(basic), Material UI (basic), Tailwind CSS (basic), Cordova (basic)
Databases: MySQL, MariaDB, PostgreSQL
Messaging & Caching: RabbitMQ, Redis
Development Tools: PHPUnit, Git, CI/CD pipelines
Packaging & Deployment: Docker, Nginx, PHP-FPM, Cron, Supervisor
Operating Systems: Linux (Debian/CentOS/AlmaLinux), Windows
Principles & Practices: OOP, GRASP, SOLID, Clean Architecture, DDD, CQRS, Event Sourcing

Personal Qualities
Self-motivated, curious, eager to learn and able to thrive in a fast paced, remote or onsite environment.
Great problem-solving skills, ability to identify solution’s risks and provide in advance.

Languages
English – B1
Russian – Fluent
Ukrainian – Fluent

Education
Dniprovsky State Technical University
Bachelor's degree in Applied Mathematics

Experience
NIX Solutions — Toshiba Self-Service Terminal Client (2021)
A cross-platform client application for Toshiba self-service terminals, developed with Cordova and Vue3/TS.
The solution focused on building a responsive user interface and stable integration with backend services.
Role: Software Engineer
Team: 5 people
Skills: Vue 3, TS, Cordova, Docker, Git
Responsibilities:
 Implementation of core UI components and their integration with backend API
 Support for internationalization and localization
 Collaborated with Toshiba stakeholders to meet client requirements
 Performed bug fixing and optimization during online testing sessions
 Participated in feature discussions and code reviews

NIX Solutions — Yandex.Eda High-Load Backend & Admin Panel (2021-2022)
Development and maintenance of a high-load backend service and admin panel as part of the Integrations
team. Responsible for connecting external businesses, including restaurants, retail chains, and marketplaces,
to the Yandex.Eda marketplace platform.
Role: Software Engineer
Team: 14 people
Skills: PHP7, Symfony, PHPUnit, Codeception, MySQL/PostgreSQL, Redis, RabbitMQ, AWS S3, Docker, ELK
stack, REST API
Responsibilities:
 Development of backend services and background jobs for business integrations and admin panel
functionality
 Implementation of internal and external APIs
 Performance monitoring, query optimization, and ensuring high availability for a high-load system
 Collaboration with team members on feature design, code reviews, and problem-solving

NIX Solutions — Graphic Editor (Figma-like) for Marketing Designers (2022-2024)
Development of a web-based graphic editor tailored to marketing designers’ needs. Most of the time spent in
the Animations team, delivering core features and ensuring high performance for heavy projects.
Role: Software Engineer
Team: 10 people
Skills: Vue 3, JS/TS, LESS, Webpack/Vite, Jest, Pinia, Node.js, Docker
Responsibilities:
 Implementation of core UI and animation features, including hover states, auto layout, and custom
keyframe-based animations
 Optimization of multiplayer interactions for heavy projects
 Refactoring and improving the architecture of various modules
 Participation in planning, writing specifications, code reviews, and team discussions

Otpusk.ua — Travel industry CRM platform (2025)
Development and maintenance of backend services for a custom CRM system in the travel industry. Involved
in both system design and implementation of new features, as well as optimization and refactoring of
existing functionality, including integrations with internal and external systems.

Role: Software Engineer
Team: 7 people
Skills: PHP8, Symfony, MySQL, Docker
Responsibilities:
 Development and refactoring of the contract generation and signing workflow
 Redesign and reimplementation of a legacy roles and permissions system to enable flexible and
granular access control
 Implementation of a small workflow for client authorization and redirection to an external education
platform
  Refactoring and enhancement of a client–tourist interaction subsystem, including analytics and
statistics improvements
 Participation in feature planning, writing specifications and technical discussions

Freelance — Custom CRM (2020-2026)
Development and maintenance of a custom CRM system from scratch for a Ukrainian business with multiple
integrations.
Role: Software Engineer / DevOps
Team: Solo / small team
Skills: PHP 7/8, Symfony, Laravel, Vue 3, Nuxt, JS/TS, Vuetify, PrimeVue, Docker, REST API, Nginx, PHP-FPM,
MySQL, PostgreSQL, OpenVPN, Postfix, Cron, Supervisor, VPS administration (CentOS/AlmaLinux)
Responsibilities:
 Development of backend and frontend features for CRM functionality
 Automation for Email and SMS campaigns, shipment tracking, and integration with receipt generation
service
 Setup, administration, and maintenance of VPS infrastructure and production environments
 Writing feature specifications and performing ongoing improvements