Michał – C#, .NET, .NET Core

The betting platform utilized globally, across multiple jurisdictions.

• Migrated the project to a new platform;
• Implemented solutions required by licenses and laws;
• Switched to a Java position;
• Worked on a unified account management system across multiple company brands.

A rising startup with a goal of growing into a competitive player in the OTA bookings market. The site provides hotels from multiple countries and multiple providers. Handling real-time price updates and cash transactions.

• Rewrote the whole service from scratch, reducing memory usage and latency by 50%;
• Introduced an algorithm to prevent price changes according to the existing margin threshold;
• Reduced error rate from 5% to sub 1%;
• Created new user flow to optimize revenue and provide an ability to collaborate with different hotel providers.

An online casino and sports betting platform.

• Integrated an external identity provider on the front-end side;
• Moved old .net framework services to .NET 6 and from TeamCity and Windows services to Gitlab CI/CD and Docker.
• Worked as only dev in an additional project focused on user experience with the use of quantitative data to measure changes in performance and impact on the user experience;
• Did code reviews;
• Managed tasks between two teams;
• Did technical analysis;
• Contributed to design discussions;
• Did internal Presentations on various topics;
• Conducted interviews;
• Mentored new members.

Project for a multinational client from the industrial sector, cooperating in a multi-company team. Risk management tool in the financial domain, which was used by external auditors and also greenfield project for SOX control automation.

• Managed and coordinated team (Greenfield project);
• Developed high-level application design;
• Described and created tasks;
• Assigned tasks to the team members;
• Did code reviews;
• Implemented new features;
• Did code maintenance.

One of the largest consulting companies partnered with Microsoft. The company had multiple projects, which enabled him to work on a variety of tech stacks with many international clients.

• Was working on a data storage application for an insurance company.
• CRM for national heritage institution.
• Android application for an insurance company (Google Drive-like) and international medical documentation for one of the largest pharmaceutical companies (Sitecore project).

• Handled the process of a complete redesign of an application;
• Extended functionality and maintained CRM project written in Ruby;
• Optimized document import and serialization with the use of Microsoft Azure solutions;
• Managed project DevOps on Azure;
• Deployed services with the help of Azure;
• Did code reviews;
• Cooperated closely with businesses on app development.

The tool was responsible for managing documents related to land and mortgage registers and adding and creating spatial data on maps.

• Implemented new features with the use of advanced spatial data;
• Implemented a user email notification system;
• Did code reviews;
• Maintained and developed the old services;
• Created new services based on requirements.