Dawid Twardowski Email & Phone Number

Warsaw, Mazowieckie, Poland

So far, I've had the opportunity to work on, develop, maintain, and design numerous frontend applications throughout their lifecycle. Many of these were related to 𝐍𝐅𝐓𝐬, which allowed me to gain insights into the 𝐛𝐥𝐨𝐜𝐤𝐜𝐡𝐚𝐢𝐧 ecosystems and 𝐇𝐞𝐝𝐞𝐫𝐚 𝐇𝐚𝐬𝐡𝐠𝐫𝐚𝐩𝐡. I've worked on both 𝐜𝐮𝐬𝐭𝐨𝐝𝐢𝐚𝐥 and 𝐧𝐨𝐧-𝐜𝐮𝐬𝐭𝐨𝐝𝐢𝐚𝐥 solutions, communicating with the blockchain directly from the frontend as well as through APIs created within project. I also have experience communicating with 𝐜𝐫𝐲𝐩𝐭𝐨 𝐰𝐚𝐥𝐥𝐞𝐭𝐬 like 𝐇𝐚𝐬𝐡𝐏𝐚𝐜𝐤 and 𝐌𝐞𝐭𝐚𝐌𝐚𝐬𝐤.One of the most interesting projects I've worked on was '𝐎𝐰𝐧 𝐓𝐡𝐞 𝐙𝐨𝐧𝐞: 𝐅𝐈𝐅𝐀 𝐖𝐨𝐦𝐞𝐧'𝐬 𝐖𝐨𝐫𝐥𝐝 𝐂𝐮𝐩' where my task was to handle the visual responsive part of the application using 𝐓𝐚𝐢𝐥𝐰𝐢𝐧𝐝𝐂𝐒𝐒 and 𝐑𝐞𝐚𝐜𝐭𝐒𝐩𝐫𝐢𝐧𝐠. In other projects, I've also had the chance to use 𝐅𝐫𝐚𝐦𝐞𝐫𝐌𝐨𝐭𝐢𝐨𝐧 and even explore 𝐓𝐡𝐫𝐞𝐞𝐉𝐒.Additionally, I developed an application for 𝐏𝐫𝐳𝐞𝐥𝐞𝐰𝐲𝟐𝟒, the largest online payment operator in Poland, where I was responsible for implementing complex business logic based on state machines, along with the visual implementation.Another fascinating project I contributed to was 𝐏𝐥𝐚𝐧𝐛𝐨𝐱 – an application for project and resource management within companies. In this role, I served as the head developer of the application, working with technologies such as 𝐍𝐞𝐱𝐭𝐉𝐒, 𝐭𝐑𝐏𝐂, and 𝐏𝐫𝐢𝐬𝐦𝐚.

Pleszew, Wielkopolskie, Poland

Among a broad range of responsibilities, it's worth highlighting client collaboration, project management, application architecture design and implementation, database design, and full-stack development. This includes everything from database design, backend implementation according to the 𝐌𝐕𝐂 pattern, to creating a user-friendly responsive interface. Most of my work involved 𝐏𝐇𝐏 𝐋𝐚𝐫𝐚𝐯𝐞𝐥, primarily using the 𝐁𝐥𝐚𝐝𝐞 templating engine, but I also gained experience with 𝐑𝐞𝐚𝐜𝐭, 𝐕𝐮𝐞, 𝐣𝐐𝐮𝐞𝐫𝐲, and 𝐯𝐚𝐧𝐢𝐥𝐥𝐚 𝐉𝐚𝐯𝐚𝐒𝐜𝐫𝐢𝐩𝐭.One of the projects was an online radio application. Built with 𝐑𝐞𝐚𝐜𝐭 and 𝐓𝐲𝐩𝐞𝐒𝐜𝐫𝐢𝐩𝐭, it introduced me to the mechanics of audio streaming. An interesting project was a social media service application. This app used 𝐏𝐇𝐏, 𝐋𝐚𝐫𝐚𝐯𝐞𝐥, **Blade**, 𝐣𝐐𝐮𝐞𝐫𝐲, and 𝐯𝐚𝐧𝐢𝐥𝐥𝐚 𝐉𝐚𝐯𝐚𝐒𝐜𝐫𝐢𝐩𝐭. I implemented 𝐒𝐭𝐫𝐢𝐩𝐞 payment system integration, worked with 𝐰𝐞𝐛 𝐬𝐜𝐫𝐚𝐩𝐢𝐧𝐠, and designed the architecture, database structure, and application flow.The largest project I worked on was an enterprise invoice management application, where my responsibilities included implementing features, creating database queries, fixing bugs, and working on the backend and the frontend using 𝐋𝐚𝐫𝐚𝐯𝐞𝐥, 𝐁𝐥𝐚𝐝𝐞 and 𝐕𝐮𝐞.Another notable project was a local classifieds portal for selling items. My tasks spanned from backend to frontend, designing, developing, and maintaining the application, database, and the advertisement import system.

Nowe Skalmierzyce, Wielkopolskie, Poland

- Conducted interviews and meetings with future application users to analyze business requirements, application design, data scope, and development.- Developed applications within the Oracle ERP environment to present data using Oracle Apex. Tasks included writing Oracle database queries, designing page layouts, and enhancing native Oracle Apex components with CSS and custom JavaScript to meet stakeholder requirements.- Enhanced the ERP system.

Nowe Skalmierzyce, Wielkopolskie, Poland

- As an intern, I was fully involved in developing internal corporate applications based on a custom PHP framework and Laravel, participating in all stages of the application lifecycle.- Participated in meetings with stakeholders for business analysis.- Designed and developed applications following the MVC architecture, as well as MariaDB databases.- Developed responsive applications using Smarty, Twig, and Blade templating engines, and enhanced user interaction with custom JavaScript and jQuery.