We are looking for a Senior .NET Developer to join a team working on a large-scale platform focused on real-time data and document processing.The platform handles high-volume data workflows and includes text normalization, parsing, and pattern-matching pipelines, combined with AI-assisted processing to improve automation and accuracy. The system operates in a production environment with global users and requires high performance, scalability, and reliability. 

This is a great opportunity to contribute to the development, deployment, and support of scalable applications and infrastructure used by customers worldwide. 

Experience / Skills required: 

Must have: 

5+ years of professional experience in backend development  Strong experience with .NET Core / .NET Framework  Solid programming skills in C#  Experience with Microsoft SQL databases and MongoDB  Familiarity with AWS services such as S3, EC2, and SQS  Experience in low-latency text processing, including parsing, pattern matching, and REGEX  Experience building and maintaining scalable backend services  Strong interpersonal and communication skills  Proactive and problem-solving mindset  English: Upper-Intermediate or higher 

Good to have: 

Experience with VB.NET  Knowledge of HTML, XPath, CSS selectors or general web development  Experience with ElasticSearch, Redis, or NCache  Experience working with AWS Cloud environments  Familiarity with GNU/Linux  Experience working in geographically distributed teams  Experience with C++ is a plus 

Responsibilities: 

Develop backend services using .NET and C#  Work on a real-time document and text processing system  Implement text normalization, parsing, and pattern-matching logic within data processing workflows  Contribute to AI-assisted data processing pipelines  Write clean, scalable, and maintainable code  Review, update, refactor, and debug existing code  Improve performance and reliability of the existing system  Investigate and resolve production issues  Collaborate with the engineering team to design and deliver new features  Stay up to date with modern development practices and technologies 

We offer:  

Competitive salary with the regular review  Medical Insurance after 3 months probation period (can be used in Ukraine)  Vacation (up to 20 working days)  Sick leaves (10 working days)  National Holidays as a time off (11 days)  Online English courses  Accountant assistance and legal support  Flexible working schedule, remote, office-based or hybrid format Fully-equipped perfect office space located in the city center (ready for work in blackouts)  Direct cooperation with the customer  Dynamic environment with low level of bureaucracy and great team spirit  Challenging projects in diverse business domains and a variety of tech stacks  Communication with Top/Senior level specialists to strengthen your hard skills  Online/offline teambuildings  Volunteering culture development and support