Michał – C#, .NET, .NET Core

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.

• Rewritten the whole service from scratch reducing memory usage and latency by 50%
• Introduced an algorithm to prevent price changes according to 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 provider

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 close 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