Вадим

Vadym Kuznetsov
Full-Stack Developer
Sofia, Bulgaria | [open contact info](look above in the "contact info" section) | [open contact info](look above in the "contact info" section) | [open contact info](look above in the "contact info" section)
| github.com/vadim-job-hg

PROFESSIONAL SUMMARY
Full-Stack Developer with 13+ years of experience across e-commerce, IoT, fintech, and education platforms.
Skilled in PHP/Laravel, JavaScript, and Python, with hands-on experience integrating payment systems (Stripe,
Authorize.net), ERP/CRM platforms (NetSuite), and building REST APIs for web, mobile, and PWA
applications. Experienced leading projects end-to-end, from architecture and security hardening to deployment,
automation, and ongoing production support.

SKILLS
Languages: PHP, JavaScript, Python, Java
Frameworks & CMS: Laravel, Phalcon, Kohana, WordPress, Vue.js
Frontend: HTML, CSS, jQuery, Bootstrap, DataTables
Databases: SQL, MySQL
Cloud & DevOps: AWS, Google App Engine (GAE), Docker, Nginx, Redis
Architecture & Messaging: RabbitMQ, Microservices, Multi-tenant Architecture
APIs & Integrations: REST APIs, Swagger, JSON, Facebook API, NetSuite, SuiteScript, OAuth2 / JWT
Payment Systems: Stripe, Authorize.net
Testing & Automation: PHPUnit, Postman, Selenium, Playwright
Monitoring & Logging: Sentry
Analytics & BI: BigQuery, Looker
Project Management: Jira, Trello, Asana
Version Control: Git, Subversion (SVN)

PROFESSIONAL EXPERIENCE
Full-Stack Developer — Devrix (Bulgaria)
December 2025 – Present
• Developed and maintained WordPress websites and custom WordPress plugins to support marketing and
affiliate operations.
• Built and maintained affiliate program integrations for major marketplaces, including Amazon and Walmart,
supporting product data syncing and campaign tracking.
• Retrieved and processed product data via marketplace APIs and the Facebook API to keep advertising and
catalog data accurate and up to date.
• Developed a web application for syncing data with Facebook Catalog, building on existing internal
automation tools.
• Integrated and customized NetSuite using SuiteScript, building data synchronization workflows between
NetSuite and internal/marketing systems.
• Built automation bots using Python, Playwright, and Selenium, including bots for validating advertising link
integrity and bypassing CAPTCHA challenges for reliable automated testing.
• Integrated AI-based tools into the workflow for automated image processing and ad copywriting, increasing
content production speed.
• Built custom dashboards and visualizations in Looker on top of BigQuery data, improving visibility into
marketing and affiliate performance.

PHP Backend Developer — Kita Koch (Remote)
July 2024 – November 2025
• Designed and developed backend microservices using PHP/Laravel, including a notification microservice
built in Java for push notifications.
• Implemented asynchronous communication between microservices using RabbitMQ for reliable message
queuing.
• Containerized services and development environments using Docker, streamlining deployment and ensuring
consistency across environments.
• Documented and maintained REST APIs using Swagger, improving clarity and integration speed for other
developers.
• Built and supported multi-tenant architecture, ensuring proper data isolation and scalability across client
instances.
• Worked with SQL databases to design schemas, optimize queries, and support backend data operations.
• Resolved bugs and provided ongoing production support, maintaining system stability and reliability.
Full-Stack Developer (Senior) — Grid Dynamics (Ukraine)
August 2017 – May 2024
• Developed and maintained PHP/Laravel backend systems powering real-time monitoring of environmental
conditions for Naava Green Walls, an IoT-enabled smart-plant platform.
• Built remote-control tools enabling facility managers to adjust watering schedules, lighting, and air circulation
remotely across deployed installations.
• Designed and developed backend APIs for the Naava mobile application, supporting core end-user features
and third-party integrations.
• Progressed from Full-Stack Developer to Senior Full-Stack Developer over 6+ years, taking on greater
ownership of architecture and technical decisions as the main developer on the project.
• Served as primary developer on a separate one-year backend modernization project for a mobile
application, migrating the legacy backend to Laravel.
• Identified and resolved critical security vulnerabilities in the migrated application, hardening authentication
and data-handling logic.
• Implemented proper separation between production and development environments for the mobile
application, eliminating the risk of dev changes affecting live users and data.

Full-Stack Developer / Team Lead — KnubiSoft (Ukraine)
March 2016 – July 2017
• Led a small development team, distributing tasks, reviewing code, and ensuring on-time delivery across
multiple concurrent projects.
• Built subsidiary applications for the Swedish department of BCA, working independently across the full
development lifecycle.
• Gained hands-on production experience with the Phalcon PHP framework, contributing to architecture and
implementation decisions for new projects.
• Designed and implemented an automated exception-monitoring and notification system, alerting developers
in real time to production errors and reducing bug response time.
• Maintained and supported several WordPress-based client websites alongside custom application
development.

Full-Stack Developer — iDeus (Ukraine)
October 2014 – March 2016
• Integrated Stripe and Authorize.net payment systems into the Kohana (PHP) framework, enabling secure
online course purchases and payment processing for TesTeachers, an educational platform delivering
insurance courses to U.S. students.
• Refactored the student registration and enrollment system, simplifying legacy code and improving
maintainability.
• Conducted security audits across the platform, identifying and remediating vulnerabilities to protect student
and payment data.
• Built data management and reporting views in the admin panel using DataTables for staff use.
Full-Stack Developer — MobilLuck (Ukraine)
May 2013 – October 2014
• Built a multithreaded web scraper in PHP that continuously monitored pricing and product data across 20+
competitor e-commerce sites.
• Designed and implemented an automated repricing engine combining competitor pricing with product
profitability data to recommend optimal price points.
• Led a full-stack redesign of the main storefront, handling both front-end markup/UI and backend logic on a
self-built PHP/JavaScript/MySQL stack.
• Identified and resolved critical security vulnerabilities, successfully mitigating attempted breaches of the
production site.

EDUCATION
Technologist in Computer Networks, Network Management and Systems Security — Kharkov
Polytechnic Institute, 2003 – 2006
Programming for Computer Technology and Automated Systems — Kharkov Patent and Computer
College, 2003 – 2006

CERTIFICATIONS
Sololearn Programming Certifications (2016 – 2017): PHP, SQL, JavaScript, jQuery, HTML, CSS, Java, Ruby,
Python Core

LANGUAGES
Russian — Native | Ukrainian — Native | English — Advanced