During my tenure at Watch Shop, I served as a Senior Software Engineer, playing a pivotal role in the development and maintenance of a high-availability e-commerce platform. Collaborating with a team of talented engineers, we designed and implemented a modern platform encompassing e-commerce technologies. Notably, I contributed to the successful integration of multiple payment providers and Delivery Management Software (Metapack) while optimizing the platform for over 1.5 million daily page views on AWS. Additionally, I played a key part in devising a robust fraud order system and a highly effective rate limiter system, blocking 90% of DDoS attacks.- Co-designed and maintained a modern e-commerce platform using new technology stack- Developed fraud order system, reducing company fraud loss significantly- Co-designed the rate limiter system, which blocked 90% of DDoS attacks- Designed the new basket & checkout functionality resulting in over 500 increase in transactions per month- Integrated multiple payment provider (Adyen, Stripe, Braintree and Openpay) - Integrated Delivery Management Software (Metapack) to allow use any shipping carrier- Successfully implemented new software infrastructure on AWS, serving over 1.5 million daily page views- Heavily involved in maintenance of the legacy system- Created financial audit reports for KPMG

Trebion is a software and infrastructure consulting, and software development company. It specializes in creating systems for clients like Incapture, Kipu, Watch Shop, EasyReturns, and others, with a focus on e-commerce and shipping/returns systems based on Symfony, Laravel, and React frameworks.- Architected Content Management System (CMS) and Returns Management System for key clients- Pioneered the development of a consolidated shipping system, resulting in a remarkable 36% reduction in shipping costs from the UK to the EU- Designed and implemented an innovative system for fraud order validation, enhancing security and trust in the order process

Lead developer on Prism DM’s CRM on which I have developed new REST API and extended features for placing orders and case system.- Managed a team of 4 developers on e-commerce projects for Warner Bros. Studio Tour London, Agent Provocateur and RNLI- Implemented a responsive design based on Bootstrap 3- Designed new modules for CMS and REST API using Symfony Framework

- Enhanced order placement features and provided technical support to end users- Used XHTML, CSS, PHP, MySQL, JavaScript, and jQuery for website design and maintenance

As a Co-Founder of www.topkupony.pl, I spearheaded the creation and successful management of a thriving website offering voucher codes and promotional coupons. Initially built on Wordpress, I later led the migration to a custom-built system based on Symfony 2, enabling enhanced performance and flexibility. Through strategic implementation of web crawlers and REST APIs, we imported voucher codes from various retailers, driving traffic with over 125,000 monthly page views.- Successfully created a voucher codes website using Symfony 2 and React, catering to 125,000 monthly page views- Integrated web crawler to import voucher codes through REST API- Improving trust rank of the above websites- Optimizing websites for Google search engine- Selecting search phrases and choosing keywords- Improving position for head phrases and long tail phrases- Actively researching, testing and proposing new approaches to improving search engine rankings- External link building with relevant high quality third party websites and directories- Internal link building within sites

Designed and created websites using WordPress, Joomla, Magento, PHP, MySQL (www.kipu.pl, accounting system).Duties:- Designing websites for clients- Designed accounting system using PHP, MySQL and JavaScript- Designing templates for WordPress and Joomla- Designing websites using Zend Framework- Using Photoshop for web graphic- Providing technical support to end users- Participating in discussions with clients to clarify what they want- Writing cross-browser compliant XHTML, CSS & JavaScript- Testing websites for functionality in different browsers & at different resolutions

Responsible for administrating, monitoring, securing and traffic control server for housing estate Internet network.Duties:- Working with Samba to provide file services for various operating system clients- Managing and monitoring network traffic control by HTB (hierarchical token bucket)- Responsible for the fast and accurate troubleshooting of reported faults- Supporting a multi-site IT infrastructure of at least 250 clients- Providing 1st and 2nd line support to clients- Installation and support of telecommunication equipment- Managing DNS server (Bind 9)- Managing mail server (Postfix)- Managing web server (Apache 2)- Managing database server (MySQL)- Creating new email and web accounts- Updating and monitoring servers security- Updating and monitoring email spam rules- Managing and monitoring of backups- Firewall administration