.NET Developer with WinForms experience

About the Position

We are seeking a .NET Developer with WinForms experience for a remote position in Ukraine, focusing on e-commerce automation.

Responsibilities

• Develop and maintain desktop applications using .NET and WinForms.
• Collaborate with the team to implement new features and improve existing ones.
• Work on a project that automates the search and purchase of profitable items on international online marketplaces.

Requirements

• Commercial experience with .NET and WinForms.
• Experience with Model-View-Presenter (MVP) architecture is a plus.
• English proficiency: B1+ or higher (confident speaking for daily meetings with the client and team).

We Offer

• Fully remote work from Ukraine.
• Long-term cooperation.
• Flexible working hours (mostly from 10:00 to 18:00 Kyiv time, with possible flexibility by agreement with the client).
• Company-provided laptop if needed.
• Time tracking using Hubstaff or Upwork Tracker.

About the Company

The project is a desktop application for professional online sellers and resellers that automates the search and purchase of profitable items on a major international online marketplace (e.g., eBay). The product tracks new listings in real-time via the marketplace's official API and sends instant notifications, giving users an advantage over regular search. Key features include a flexible workspace with customizable columns and drag-and-drop fields, integration with Google Sheets, bulk import from CSV/Excel, AI-calculated profitability and risk assessment, a business rules engine for matching listings with product catalogs, and direct purchasing from the dashboard. The architecture is hybrid: desktop client + cloud component for search; the application has Microsoft EV certification. The product is actively developed, with over $40 million in annual sales. The project has legacy code, so familiarity with it is necessary.

Technologies and Tools

• Backend:.NET 8
• Frontend: WinForms, Web Sockets
• Databases: PostgreSQL
• Cloud: AWS
• Task Management: GitHub + ClickUp
• Communication: ClickUp
• CI/CD: GitHub Actions + Manual

Legal and Financial Conditions

• Probation period: 1 month.
• Legal arrangement: Cooperation only through an Individual Entrepreneur (IE) of the 3rd group, and only to a hryvnia account. If you do not have an IE yet, we will provide the necessary consultation and assistance in opening it.
• Compensation: Gross - independent tax payment from the received amount on the IE: 5% single tax + 1% military levy + ESC (1902.34 UAH/month). We provide accounting assistance with reports.
• Cooperation model: Contract with a fixed hourly rate. Payment is made for the actual hours worked, so the client does not provide a social package (paid vacations and sick leave) for this position.

Application Process

Introduction: Write to us on Telegram: we will collect all the necessary information about your experience.

Technical interview: 30–60 minutes, in English (discussion of your experience).

Client interview: 15–60 minutes, in English (introduction and project discussion).

How to apply: The fastest way to apply for the position is to write to us on Telegram: Telegram. If you do not use Telegram, send your resume to: [email protected].

Apply for this role through our Telegram bot. It asks every candidate the same set of questions and takes about fifteen minutes. The same vacancies are published on DOU and Djinni.