Oleksandr

Oleksander Kuzmenko
Senior Software Engineer | Backend & Full Stack

Email: [відкрити контакти](див. вище в блоці «контактна інформація»)
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Location: Lisbon, Portugal
LinkedIn: [відкрити контакти](див. вище в блоці «контактна інформація»)

Summary:
Results-driven Senior Backend Engineer with 10 years of experience building scalable,
enterprise-grade web applications. Expert in PHP (Symfony), RESTful APIs, and Microservices,
with deep practical knowledge of Clean Architecture, TDD, and AWS cloud infrastructure.
Experienced in delivering decoupled solutions from scratch, optimizing system performance under
high loads, and mentoring engineering teams.

Technical Stack:
Languages: PHP 5 - 8+, JavaScript, TypeScript, Go, Python, HTML5, CSS3, Node.js.
Frameworks & Libraries: Symfony, Laravel, Yii2, AngularJS, Vue.js, jQuery.
Message Brokers & Queues: RabbitMQ, Apache Kafka, Symfony Messenger.
Databases & Caching: MySQL, PostgreSQL, Redis, Memcached.
API: RESTful APIs, SOAP, gRPC, Swagger / OpenAPI.
Testing & CI/CD: PHPUnit, Selenium, GitHub, GitLab, Bitbucket, Composer.
Tools: PHPStan, Psalm, PHP_CodeSniffer, Deptrac.
Infrastructure & Cloud: Docker, Kubernetes, AWS, GCP, Linux.
Security & Auth: Auth/RBAC, OWASP Top 10, Data Encryption (SSL/TLS, AES), Key Isolation.
AI Tools: OpenAI GPT, Portkey, Cursor AI, Claude Code.

Skills:
Development & Engineering: Test-Driven Development (TDD), BDD, Unit Testing, Integration
Testing, Code Reviews, Refactoring, Debugging, API Development & Integration, Full-Stack
Development

Architecture & Design: Clean Architecture, Hexagonal Architecture, Domain-Driven Design
(DDD), SOLID Principles, OOP, Microservices, System Scalability, Solution Design & Technical
Decision Making

Security & Compliance: Vulnerability Remediation, Security Standards Compliance

Process & Leadership: Agile/Scrum, Software Development Lifecycle (SDLC), Team Leadership,
Self-Education

Work Experience:

Autodoc (Automotive) - Backend Developer, Full-time

Portugal • 06/2025 – Present

– Architected and developed the Customs and Trade Compliance project from scratch using
Symfony, Clean Architecture, and Hexagonal (Ports & Adapters) design patterns, ensuring high
scalability and zero technical debt as the project continuously evolves.

– Established rigorous CI/CD pipelines and static analysis workflows, implementing strict code
uniformity and dependency control via Deptrac, PHP CS Fixer, and Psalm integrated into
pre-commit hooks.

– Accelerated test coverage and system reliability by leveraging AI-driven development tools
(Cursor) from day one to fully cover business logic with Unit, Contract, and E2E tests.

– Engineered a highly decoupled system architecture utilizing Symfony DI for configuration-level
dependency injection, eliminating hardcoded classes through design patterns such as Adapter
(Fallback) and Factory.

Rocketroute (Aviation) – Full Stack Developer, Full-time
USA • 03/2020 – 05/2025
– Developed internal aviation systems using Symfony, JavaScript, and MySQL in a high-load
environment.
– Built and maintained automated deployment platform for JS/CSS assets, running daily for over 3
years.
– Integrated LVNL CFSP API, improving aviation data services for Dutch airspace.
– Applied DDD and Clean Architecture to create a modular LIDO navigation import system,
resulting in 5x faster module deployment.
– Optimized aircraft fuel calculation logic, achieving 10% improvement in fuel efficiency.
– Collaborated with DevOps team using CI/CD, Docker, and AWS infrastructure.

AutoEasy (AI Assistant) – Backend Developer, Part-time
USA • 07/2023 – 01/2024
– Built backend tools for AI-driven content generation using OpenAI GPT.
– Created data extraction system with Selenium to gather vehicle info from external sources.
– Engineered file builder that parsed, stored, and rendered JSON files via AWS S3 for frontend
use.
– Generated and deployed 1000+ static editorial pages with AI-generated metadata to improve
user experience.

Clever Solution (Automotive) – Full Stack Developer, Full-time
Ukraine • 02/2016 – 03/2020
– Designed and implemented a high-volume import system with Symfony, handling 1500+ daily
vehicle updates.
– Successfully pitched and sold platform to CapitalOne during a 3-day B2B presentation.
– Engineered advanced data encryption and secure key isolation protocols on AWS, eliminating
security vulnerabilities and ensuring 100% compliance with data protection standards over 18+
months.
– Identified and fixed vulnerabilities in third-party automotive APIs, saving the company over
$3,000.
– Replaced costly Google API Geo Services with native solutions, saving over $400 weekly.

Education & Professional Development

Advanced Software Engineering & Computer Science | Udemy, LinkedIn Learning (Continuous
learning: 2016 – Present)

Specialist Degree | Odessa I.I. Mechnikov National University (2006 – 2010)

Certifications

- PHP Skill Assessment | LinkedIn | Completed 04/2022

- Object Oriented Programming (OOP) Skill Assessment | LinkedIn | Completed 05/2022

Languages:

English - B2

Portuguese - A1

Ukrainian - native