Senior .NET Developer

Senior .NET Developer

• 💰 $6,700 - $7,200 Gross Monthly Salary

• 📍 Hybrid from Warsaw (3 days/week at office)

• ☑️ Full-time, long-term

• 📑 Contract of Employment or B2B

Our client is a leading provider of AI-powered enterprise operations, delivering digital solutions and consulting that help businesses streamline workflows, improve efficiency, and unlock new revenue opportunities. Its ecosystem combines a PaaS foundation for optimized operations, a SaaS cloud platform for scale and performance, and a consulting suite that guides growth and optimization. With over a decade of experience in private capital markets and high-growth companies, the team brings deep expertise and a proven ability to turn technology into strategic advantage.

Responsibilities and Duties:

• Design maintainable, extensible components for a world-class fintech software suite. 

• Write clean, scalable code using .NET programming languages 

• Develop automated tests for code under development. 

• Maintained code for various .NET applications and resolved any defects in systems. 

• Revise, update, refactor, and debug code. 

• Improve existing software. 

• Develop API and code documentation for systems under development. 

• Monitor everyday activities of the system, serve as an expert on applications, and provide technical support. 

• Ensure adherence to development standards and practices

Requirements:

• 6+ years of experience as a software engineer. 

• Expertise in the MS Entity Framework. 

• Strong proficiency in C#, ASP.NET, .NET MVC, and web APIs. 

• SQL Server schema design, stored procedures, and table creation. 

• Familiarity with architectural patterns such as Model-View-Controller (MVC). 

• Familiarity with the working of an ASP.NET Core application. 

• Test framework automation experience (NUnit, Xunit, MSTest). 

• .NET Core command, framework, and build experience. 

• Knowledge of secure coding principles (OWASP, privilege escalation). 

• Azure know-how (App Service, Service Bus, SQL, Monitor, etc.). 

• Familiarity with architecture styles/APIs (REST, RPC). 

• Experience with alerting mechanisms for API’s in case of any failures. 

• Understanding of Agile methodologies. 

• Experience with concurrent development source control (Git). 

• B.S. Computer Science degree or related degree. 

• Javascript and HTML knowledge. Excellent communication skills. 

• Ability for critical thinking & creativity.

• Having a systematic and logical approach to problem-solving and teamwork skills is crucial.

Nice-to-haves:

• SPA framework experience (React, Vue, Angular) 

• Fintech experience.

Get to know DevsData

We are a technology consulting company and a recruitment agency, delivering software solutions to clients from Europe and the US. We work 100% remotely, in an international team. We employ people with experience in international corporations as well as the ones from the best technical and business universities.

Find out more: https://devsdata.com