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Michał – C#, .NET, .NET Core, experts in Lemon.io

Michał

From Poland (GMT+2)

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Back-end Web DeveloperSenior
Hire developer
9 years of commercial experience
Gambling
Healthcare
Insurance
Marketplace
PaaS
CRM
DBMS
DMS
Enterprise software
Platforms
Lemon.io stats
1
projects done
400
hours worked
Open
to new offers

Michał – C#, .NET, .NET Core

Michal is a person every team needs. His radiant personality and contagious energy turn even the most difficult tasks into fun. Michal is a Senior Backend Developer that focuses on .Net. Has good experience in distributed systems, microservices, and event-based systems. Tons of experience, wonderful English, and excellent communication skills also come as a part of the package.

Main technologies
C#
8 years
.NET
8 years
.NET Core
5 years
Additional skills
Angular
Typescript
React
Microsoft Azure
GitLab
Angular JS
Docker
CI
jQuery
ASP.NET
Ruby
Microsoft SQL Server
DevExpress
Android
DevOps
Java
PostgreSQL
Oracle
Redis
WPF
AWS
Terraform
Ready to start
ASAP
Direct hire
Potentially possible

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Experience Highlights

Senior developer
Jul 2023 - Aug 20241 year 1 month
Project Overview

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.

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Responsibilities:
  • 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
Project Tech stack:
.NET
.NET Core
C#
AWS
Datadog
ElasticSearch
DynamoDB
Docker
Terraform
Microservices
Google Analytics
Mixpanel
Senior Developer
Aug 2020 - Feb 20232 years 6 months
Project Overview

An online casino and sports betting platform.

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Responsibilities:
  • 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 Tech stack:
.NET Core
Angular JS
Docker
Gitlab
CI
Microsoft SQL Server
Full Stack Developer
Dec 2019 - Jul 20207 months
Project Overview

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.

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Responsibilities:
  • 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
Project Tech stack:
ASP.NET
jQuery
CI
Microsoft SQL Server
DevExpress
.NET Core
WPF
jQuery
ASP.NET
Azure DevOps
NUnit
Angular
Typescript
Microsoft SQL Server
Full Stack Developer
Sep 2017 - Oct 20192 years 1 month
Project Overview

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).
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Responsibilities:
  • 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
Project Tech stack:
Ruby
Microsoft Azure
Microsoft SQL Server
PostgreSQL
Java
Android
jQuery
Angular JS
.NET Core
.NET
DevOps
ASP.NET
Angular
Knockout.js
Azure Functions
Junior C# Developer
Jun 2016 - Aug 20171 year 2 months
Project Overview

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

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Responsibilities:
  • 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
Project Tech stack:
.NET
Redis
Oracle
C#
LINQ

Languages

English
Advanced

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