Maksym D.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

Hello and Welcome to my page! I am a professional full-stack web developer with 8+ years of real experience. I have been working in outsourcing companies, enterprise projects, and startups. I can work both in a team and as an individual. I have successfully created and delivered multiple projects in various business domains like accounting & finance, real-time trading, payment processing, IoT, marketing, real-estate. Contact me to discuss details of you project! These technologies, frameworks, and tools I use - .Net Framework, .Net Core - Asp.Net MVC, Asp.Net Core - Entity Framework 6, Entity Framework Core - C# - MsSQL, SQL - Vue.Js Vuex - Html, Css, Bootstrap 3, Bootstrap 4, - JavaScript, jQuery - Azure Cloud Services - Visual Studio 2017 and 2019, Visual Studio Code - GitHub, Bitbucket - Jira, AirTable, Azure DevOps, TFS I want to tell you about some of my past projects that I am proud of! 1. Australian international student payment system that allows students to pay in their local currency to domestic bank accounts in 50 countries globally. It provides easy tracking and reconciliation of student payments. The service takes the pain out of the foreign exchange, removing all ‘surprise’ deductions that can occur using other methods. I was working in a team as a senior .Net developer. Our goal was to analyze the existing platform and propose the best way to extend its functionality and introduce Api for company partners. We decoupled existing solid Asp.Net Mvc app and a lot of functionality was split to rest microservices. The user portal and admin portal were migrated from Asp.Net MVC to Asp.Net Core. The security of the entire system was refactored, and the identity server was introduced. That allowed us to flexibly grant and manage access for partners to the various microservices of the system. 2. IoT platform to collect data from various sensors scattered around the United Kingdom. The main clients of the company are hospitals, museums, hotels, shopping malls, parking, and households. Sensors allow tracking humidity, temperature, location of items, illumination, rainfall, wind speed, trash bin fullness, how much people entered the room, and security of exhibits. The main goal was to allow flexibly scale systems and add new types of sensors. When I step in, there were only temperature, illumination and humidity sensors hardcoded. I analyzed the existing app, proposed a plan to refactor and scale system and successfully implemented all changes. I introduced API integrated with the message queue that allows to collect thousands of values ​​per second, process and store it to the DB. Also, I added analytical tools that can do actions in real-time, based on values ​​from sensors. For example, when the alarm sensor triggers the event, data is analyzed and responsible peoples are informed. Also, the dashboard operator can track the sensor state and values in real-time and make decisions immediately. 3. Real-time bond trading platform. I designed and developed from scratch a platform for real-time trading for Israel company. The platform consists of a client portal and admin portal. Company clients can view a listing of available bonds, in the real-time track prices and buy or sell assets. The most complicated part of the system was to implement real-time communication between the client and the company manager during the buy/sell process. Because price changes very often, from the moment when the client press buy or sell button and ticket is approved by the manager, the price can change. So the manager should make a decision, approve the ticket with the old price or propose a new one to the client. Then the client is notified and he should confirm or decline the new price. So I created a communication channel between clients and managers based on SignalR technology and successfully implemented all required functionality. Also, back-office provides analytical tools and reports that allow the company to track profit and loss. 4. CRM for a US company that provides insurance and investment advisory. I was working in a team as a tech lead and senior .Net developer. We developed CRM that allowed the company to grow fast and manage thousands of clients all over the US. The main goal was to built complex analytical tools that help the company quickly make decisions and propose to clients the best proposals on the market. Analytic tools consist of user profilers, quizzes, integration with third-party systems that provide data about user credit history and bank accounts. We even integrated service that allows the company to login to the user's online banking and retrieve data about his income and expenses.