08/04/2026 updated
100 % available
Senior Backend Engineer - Magento 2 & E-Commerce Architecture | Laravel / Symfony Fintech
Budapest, Hungary
Only remote
M.Sc. in Software EngineeringAbout me
I help funded startups and growing e-commerce brands ship reliable backend systems — payment platforms, custom integrations, and scalable Magento/Shopify/WooCommerce stores — without the usual freelancer risk of unfinished work or fragile code.
PHP DevelopmentPHP FrameworksBackend Programming
Magento 2 / E-Commerce Development
Extensive experience building, optimizing, and migrating Magento 2 storefronts for international retail brands, including enterprise-level clients. Delivery of custom modules, payment integrations, and architecture upgrades across multiple projects.
Laravel & Symfony Backend Engineering
Solid expertise in developing scalable backend systems using Laravel and Symfony frameworks, including architecting a B2B fintech payments platform end-to-end as sole engineer, processing significant transaction volumes in production.
Cloud Infrastructure & DevOps
Hands-on experience with AWS, Azure, Docker, Jenkins, and CI/CD pipelines. Configuration of ElasticSearch, Varnish, CloudFlare, and Linux-based environments to ensure high availability and performance in production systems.
PHP & Core Web Technologies
Strong command of PHP as the primary backend language, complemented by JavaScript, XML, HTML5, and CSS3 for full-stack contributions.
Database Management
Proficiency in MySQL, PostgreSQL, and Redis (NoSQL), including database architecture design and optimization to improve query performance and data integrity.
REST & API Integration
Design and implementation of REST, SOAP, and GraphQL APIs, including integrations with external payment providers, exchange-rate services, and blockchain transaction-verification platforms.
Shopify & WooCommerce
Proven track record of platform migrations from WooCommerce to Shopify and WooCommerce to Wix, delivering improved storefront performance, streamlined checkout, and significant sales growth.
Security & Cybersecurity Practices
Implementation of security hardening and cyber-defense practices across payment and customer-data flows, backed by a B.Sc. in Cybersecurity Management.
Dev Tools & Version Control
Daily use of PhpStorm, WebStorm, Postman, Jira, and Git-based platforms including GitHub, Bitbucket, and GitLab for collaborative and solo development workflows.
Extensive experience building, optimizing, and migrating Magento 2 storefronts for international retail brands, including enterprise-level clients. Delivery of custom modules, payment integrations, and architecture upgrades across multiple projects.
Laravel & Symfony Backend Engineering
Solid expertise in developing scalable backend systems using Laravel and Symfony frameworks, including architecting a B2B fintech payments platform end-to-end as sole engineer, processing significant transaction volumes in production.
Cloud Infrastructure & DevOps
Hands-on experience with AWS, Azure, Docker, Jenkins, and CI/CD pipelines. Configuration of ElasticSearch, Varnish, CloudFlare, and Linux-based environments to ensure high availability and performance in production systems.
PHP & Core Web Technologies
Strong command of PHP as the primary backend language, complemented by JavaScript, XML, HTML5, and CSS3 for full-stack contributions.
Database Management
Proficiency in MySQL, PostgreSQL, and Redis (NoSQL), including database architecture design and optimization to improve query performance and data integrity.
REST & API Integration
Design and implementation of REST, SOAP, and GraphQL APIs, including integrations with external payment providers, exchange-rate services, and blockchain transaction-verification platforms.
Shopify & WooCommerce
Proven track record of platform migrations from WooCommerce to Shopify and WooCommerce to Wix, delivering improved storefront performance, streamlined checkout, and significant sales growth.
Security & Cybersecurity Practices
Implementation of security hardening and cyber-defense practices across payment and customer-data flows, backed by a B.Sc. in Cybersecurity Management.
Dev Tools & Version Control
Daily use of PhpStorm, WebStorm, Postman, Jira, and Git-based platforms including GitHub, Bitbucket, and GitLab for collaborative and solo development workflows.
Experience
Professional experience5 - 10 years
Freelancer since2025
Languages
EnglishFluent
Project history
Sole architect and lead developer for a B2B payments platform built on Laravel and Vue.js, owning the full lifecycle from system design through production deployment over a 12-month engagement. Designed and implemented asynchronous REST API integrations with external exchange-rate providers and blockchain transaction-verification services. Took full ownership of development, monitoring, and maintenance for a business-critical application in a high-throughput production environment.
Restored core booking and ticketing functionality for one of Spain's leading tour operators after prior contractor work had broken it during peak season. Architected and executed the platform migration from WooCommerce to Wix with no disruption to live bookings, cutting monthly maintenance and hosting costs by 60%. Directed SEO optimization and Google Ads campaign setup, and refactored legacy codebase to modern standards, improving PageSpeed performance score by 52%.
Served as Lead Developer and main technical point of contact for IceBarrel, a US-based e-commerce product. Architected and led the full migration from WooCommerce to Shopify; the relaunched platform tripled sales within 3 months. Implemented security hardening and cyber-defense practices across the platform's payment and customer-data flows. Delivered concurrent Magento 2 projects and contributed backend features to a Swiss fintech platform built on Laravel.