I offer comprehensive IT services. With a blend of technical proficiency and business insight, I provide consulting, design, infrastructure management, and programming solutions. Leveraging over a decade of experience, I prioritize user-centric design, high-quality code, and long-term project sustainability.- Completed +20 diverse projects including intranets, accounting systems, CRM, MES systems, e-commerce platforms, survey systems, plugins, and business websites.- Worked with WordPress, Drupal, and PrestaShop for web development projects.- Conducted banner and mass email campaigns, along with providing SEO & marketing support.- Managing own hosting services, offering a comprehensive IT infrastructure solution.

- Making strategic technical decisions.- Monitoring and ensuring the stability and security of the system, proactively addressing potential issues.- Conducting code reviews to ensure code quality.- Providing assistance to the IT team in resolving complex cases.

ProTrainUp is a versatile system designed to support club management, training processes, internal communication, finances, and more. The system is utilized by nearly 10 national sports associations, over 1,000 clubs, and thousands of individual coaches. My primary responsibilities included:- Requirements gathering and analysis to understand the needs of target users.- Prepared the first version (MVP) using a CodeIgniter framework.- Developed the software using PHP Laravel, and JavaScript as a full-stack developer.- Designed and implemented a user-friendly interface using JavaScript powered by jQuery and Vue. - Built and maintained REST APIs and external integrations i.a. Google API, Sendgrid, SMS Api, DotPay, P24, PayPal, wFirma, GUS API. - Established continuous integration and continuous deployment (CI/CD) processes including managing self-hosted GitLab instance.- Collaborated with the dev-ops team to ensure smooth deployment and maintenance (Linux servers, DigitalOcean).- Wrote and executed tests to ensure the software's reliability and stability.- Managed a team of developers, providing guidance and support.- Conducted internal training sessions and personal mentoring.- Participated in key meetings and coordinated collaboration with major partners, including the Polish Football Association (PZPN), Polish Handball Federation (ZPRP), and the Polish Basketball Association (PZKosz).

As a backend developer, I was involved in both technical and non-technical aspects of various projects. My technical responsibilities included designing database structures, programming, writing tests, conducting code reviews, and cooperating with dev-ops and design teams. Additionally, I contributed to non-technical activities such as supporting sales processes and building client relationships.- Developed web applications with complex business logic using the PHP Laravel framework.- Built custom integrations with client systems such as Salesforce, PIM (InRiver), Hatch, PriceSpider, and Timetastic, custom auth providers. - Collaborated with the DevOps team to prepare and maintain server infrastructure, including dedicated Linux servers, AWS, and Kubernetes, and managed CI/CD processes.- Leveraged Cloudflare and AWS to optimize page load speed and reduce infrastructure costs.- Participated in internal brainstorming sessions, led scoping workshops, and prepared estimates.- Actively shared knowledge at international dev-team meetups and delivered presentations on topics such as utilizing Cloudflare Edge cache, smooth project setup in a local environment, and using MeiliSearch as an ElasticSearch alternative.- Supported the sales department in a client-facing role, participating in client meetings.

As the owner and administrator of the sejfik.com system, I managed one of the largest programs of "GPTR" type in Poland. At its peak, the service attracted nearly 100,000 users and was enabled to generate traffic +1 million/day. My primary responsibilities included:Strategic Management:- Developing and executing the business plan.- Seeking and establishing partnerships.Marketing and SEO: - Implementing internal and outbound marketing strategies.- Optimizing websites for search engines to improve organic traffic.- Analyzing and deriving insights from Google Analytics.Technical Development:- Overseeing the technical aspects of the service, including the development and programming of new modules and integrations.- Utilizing PHP 5.x, JavaScript (jQuery), and MySQL (BigData) to enhance and maintain the platform.- Managing the server infrastructure.- Ensuring security by responding to incidents, preventing abuse, and implementing security measures.

I developed a comprehensive program to support teachers and principals by reducing their administrative workload. The program features various functionalities, including work reports and evaluations, document generation, conducting surveys, supervision, interactive "classrooms" and more. My responsibilities included:- Conducting workshops and meetings with education specialists to gather requirements and insights.- Designing the overall architecture, database schema, and user interface of the system.- Developing the program from scratch as a full-stack developer, utilizing modern technologies like PHP 7.x, MariaDB, Laravel framework, HTML, CSS, and JavaScript.- Building real-time communication modules utilizing Vue and WebSockets.

Developed a dedicated marketing system for a mobile phone operator:- Designed the database structure.- Coded the backend system using PHP and Laravel.- Coded the frontend based on Figma mockups.- Participated in internal Agile processes.- Attended key meetings with the client and delivered presentations.The project was successfully completed.