Ludwik is available for hire

Ludwik Grochowina

Verified Expert in Engineering

Regular Expressions Developer

Location

Warsaw, Poland

Toptal Member Since

April 25, 2016

Ludwik is a software developer with over 14 years of programming experience and a strong passion for programming, especially web development. He has a proven track record of successful projects and is capable of working independently, though he is always happy to work with other programmers, exchange knowledge, and learn new stuff.

Ajax PHP CSS Model View Controller (MVC)jQuery JSON Facebook API Google API Bootstrap CodeIgniter MySQL HTML5 JavaScript Object-oriented Programming (OOP)Amazon Web Services (AWS)

Portfolio

Toptal Clients

Amazon Web Services (AWS), Amazon Simple Queue Service (SQS)...

Webtation

PHPUnit, Composer, Bootstrap, jQuery, JavaScript, CSS, HTML, MySQL, PHP

Miinto

TeamCity, Git, Jira, Linux Administration, PHPUnit, Regular Expressions...

Experience

PHP - 14 years JavaScript - 11 years Object-oriented Programming (OOP) - 10 years Model View Controller (MVC) - 9 years Regular Expressions - 7 years Git - 6 years Bootstrap - 5 years Laravel 5 - 5 years

Availability

Part-time

Preferred Environment

Git, PhpStorm

The most amazing...

...position I've held was team leader in a SaaS startup (www.omnea.pl).

Work Experience

Back-end/Full-stack Developer

2016 - PRESENT

Toptal Clients

Created architecture and code API for a mobile application with huge traffic.
Made changes in back-end legacy code as well as modify the front-end.
Supported SaaS eCommerce application development on the back and front end.
Worked with a luxury community portal and front-end.
Worked with SaaS property application development in the back and front end.
Made changes in back-end legacy code and modified code to use a new version of the third-party API.
Created new functionalities for internal CRM and front end.

Technologies: Amazon Web Services (AWS), Amazon Simple Queue Service (SQS), Amazon S3 (AWS S3), PHPUnit, Composer, Git, Jira, APIs, Object-oriented Programming (OOP), Bootstrap, Vue, jQuery, JavaScript, CSS, HTML, CodeIgniter, Slim, Laravel, MySQL, PHP 7, PHP 5, PHP

Owner/Programmer

2005 - PRESENT

Webtation

Created an eCommerce engine and deployed it for many clients (e.g., tomdom.pl, smerfland.pl).
Created my own CMS and deployed it for many clients (e.g., tomdom.pl, smerfland.pl).
Created APIs and integrated websites with warehouse software.
Implemented integrations with Allegro ("Polish eBay") API.
Finished a lot of PSD to HTML slicing jobs.
Handled sales and customer service for the company.

Technologies: PHPUnit, Composer, Bootstrap, jQuery, JavaScript, CSS, HTML, MySQL, PHP

PHP Developer

2019 - 2020

Miinto

Created and maintained process of importing and managing products from over 1,500 different stores/boutiques and show them on the platform.
Created and maintained a system to order shipping and printing labels.
Provided maintenance support for an ecosystem based on around 150 separate projects (API, proxy, workers).

Technologies: TeamCity, Git, Jira, Linux Administration, PHPUnit, Regular Expressions, REST APIs, Elasticsearch, RabbitMQ, PostgreSQL, PHP

PHP5 Programmer

2015 - 2016

Shopgate GmbH

Created tools for massive scraping websites (big data).
Created tools for automation lead management processes, finding new potential clients and grabbing as much information about them as possible.
Implemented multiple APIs.
Worked with AWS SDK.
Made improvements to the internal CRM system.
Planned the technology stack for a new SaaS business.
Implemented the front end in Bootstrap.
Implemented integration tests for existing code.

Technologies: Amazon Web Services (AWS), Laravel, Amazon Simple Queue Service (SQS), Amazon S3 (AWS S3), PHPUnit, Composer, Bootstrap, jQuery, JavaScript, Regular Expressions, APIs, CSS, HTML, MySQL, CAKE, PHP

PHP Programmer

2013 - 2015

Polcode

Worked with a number of clients.
Led the team and did most of the development for omnea.de.
Implemented lead management tools (grabbing potential clients and information about them) for omnea.de.
Integrated the omnea.de site with multiple APIs.
Implemented API integrations with multiple logistics companies (like DHL and UPS).
Finished many improvements for multiple pages (eCommerce, SaaS).
Created a mobile app with PhoneGap.
Sliced PSD to HTML.

Technologies: Composer, Bootstrap, Regular Expressions, APIs, JavaScript, CSS, HTML, MySQL, PHP

Experience

Tomdom.pl

https://www.tomdom.pl

I was the lead developer. The project is a bespoke eCommerce solution, including CRM (back end as well as font end).

Technologies: PHP (Laravel), AWS (SQS queues), OOP, MySQL, HTML, CSS, JavaScript, jQuery, Linux administration

Omnea.de

https://www.omnea.de

A SaaS startup site. I was the main developer and team leader in the first startup stage, creating the core of the application, implementing APIs and crawlers, and creating lead generation tools (sales support).

Technologies: PHP, OOP, CodeIgniter, MySQL, HTML, CSS, JavaScript, jQuery, Regular Expressions, and API (Google, Facebook, Foursquare, Yelp, etc.) crawling tools.

Shopgate

https://shopgate.com/

Developed tools for automatically gaining new leads as well as grabbing as much information about the leads as possible.

Technologies:
PHP, OOP, Laravel, Cake, MySQL, MongoDB, HTML, CSS, JavaScript, jQuery, Regular Expressions, API (Google, Facebook, Twitter) crawling tools, AWS (S3, SQS, EC2), Chrome extensions.

AirportSherpa

Airport Sherpa brings the best dining and shopping from all airport terminals to travelers like you, wherever you may be inside the airport. Get delivery to your gate or seamless pick-up as you pass by.

I was the back-end team leader for this project.

Tech stack: PHP, (Slim), Parse, MySQL, Redis, AWS, RabbitMQ, Heroku, Git

Zid.sa

https://zid.sa/

Back-end as well as front-end development. The project is an eCommerce platform focused on mobile users.

Technologies: PHP (Laravel), API (payment gates), OOP, MySQL, Vue, HTML, CSS, JavaScript, jQuery

Leadbook

Planned architecture for a SaaS which sells/improves leads.

Cachefly

https://www.cachefly.com/

Improving the client panel for Cachefly, a CDN service (crud, live graphs).

Technologies: PHP, OOP, CodeIgniter, MySQL, HTML, CSS, JavaScript, jQuery

Directsight

http://www.directsight.co.uk/

Improved this eCommerce application.

Technologies: PHP, OOP, Zend, MySQL, HTML, CSS, JavaScript, jQuery

Creditloan

http://www.creditloan.com/

Programmed mainly on the front-end (PSD to HTML).

Technologies: HTML, CSS, JavaScript, jQuery

Superior Edu

Developing my own CMS (back-end as well as font-end) for this informational website

Technologies: PHP, OOP, MySQL, HTML, CSS, JavaScript, jQuery

Miinto

https://www.miinto.dk

Created and maintained the process for importing and managing products from over 1,500 stores and showing them on the platform. Built a system to order shipping and printing labels, and maintained support for the ecosystem based on around 150 separate projects.

Technologies: PHP 7.2, PostgreSQL, RabbitMQ, ElasticSearch, Rest API, Regular Expressions, PhpUnit, Linux Administration, Jira, Git, TeamCity

Skills

Languages

PHP, CSS, HTML, PHP 7, HTML5, JavaScript, PHP 5

Frameworks

Laravel 5, Bootstrap, CodeIgniter, PHPUnit, Laravel, Slim, CakePHP, Zend Framework

Libraries/APIs

jQuery, Facebook API, Google API, Facebook Open Graph API, REST APIs, Vue

Tools

RabbitMQ, Jira, AWS SDK, Adobe Photoshop, Git, PhpStorm, Composer, CAKE, Amazon Simple Queue Service (SQS), TeamCity

Paradigms

Model View Controller (MVC), Object-oriented Programming (OOP), Search Engine Optimization (SEO), Agile Software Development

Storage

JSON, MySQL, PostgreSQL, Amazon S3 (AWS S3), Elasticsearch

Other

Regular Expressions, Ajax, APIs, Linux Administration

Platforms

Amazon Web Services (AWS), DigitalOcean, Linux, CentOS, Debian Linux

Education

2008 - 2009

Master of Science (MS) Degree in Electrical and Computer Engineering, Computer Systems and Networks

Warsaw University Of Technology - Warsaw, Poland

2004 - 2008

Bachelor of Science (BS) Degree in Electrical and Computer Engineering, Computer Systems and Networks

Warsaw University Of Technology - Warsaw, Poland

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