Michał – C#, .NET, .NET Core

At the start, maintained and enhanced a large-scale, high-throughput .NET (C#, EF, SQL) casino and betting platform processing millions in turnover, successfully leading its migration to .NET 8. Transitioned to a second high-traffic betting product built on Java (Spring), continuing to deliver stable, high-performance backend services across multiple international markets. Supported development with the use of LLMs in the form of agents,

Parallel to technical execution, effectively conducted Scrum ceremonies. Shipped major, high-impact initiatives, notably developing and deploying secure biometric authentication features. Furthermore, served as the Lead Developer on a business-critical initiative to build a unified account management system spanning multiple company brands.

• 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. Was lead developer on this initiative;
• Created full biometric authentication integration on backend level, this initiative was led by Michał and succeeded;
• Conducted scrum ceremonies;
• Created and refined tasks/tickets;
• Led initiatives, organised meetings, coordinated teams;
• On-Call support;
• PR reviews.

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.