During my work at the company, I was responsible for maintaining existing services and developing new microservices using a C#-based technology stack. Key responsibilities included: Microservice Development: Designing and implementing RESTful APIs using ASP.NET Core, integrating with internal and external systems via gRPC, RabbitMQ, and REST. Service Maintenance: Optimizing performance, resolving production incidents and bugs, and ensuring seamless operation of existing solutions. Database Migration: Migrating data and database structures from Microsoft SQL Server to PostgreSQL. Tasks included: Analyzing and adapting stored procedures, triggers, and functions. Optimizing SQL queries to enhance performance in PostgreSQL. Automating data migration and schema conversion processes. Tools and Practices: Utilizing EF Core for database operations, configuring CI/CD pipelines with Jenkins and GitLab CI, and working with Docker for application containerization. Team Collaboration: Participating in Agile processes, conducting code reviews, and discussing architectural solutions and improvements. This experience enhanced my expertise in working with relational databases, building microservice architectures, and optimizing complex business processes.

Developed APIs for backing up data to Amazon, Azure, and Google Cloud using .NET Core and MSSQL. Designed and implemented secure and efficient solutions for cloud storage integration. Optimized database interactions and ensured scalability to handle large data volumes. Collaborated with cross-functional teams to improve API performance and reliability.

Developed APIs for game development projects using .NET Core and other Microsoft technologies. Utilized technologies and frameworks such as Mediator, SignalR, gRPC, MSSQL, EF Core, Refit, Ocelot, and AWS to deliver scalable and efficient solutions. Designed and implemented real-time communication systems using SignalR and gRPC. Integrated third-party services and APIs using Refit and Ocelot for API gateway management. Optimized database operations with Entity Framework Core and MSSQL for improved performance. Collaborated with the team to deliver high-quality features for game development workflows.

Developed web services using C# and .NET Core, while maintaining and enhancing a legacy project built on .NET Framework. Worked with databases such as MSSQL for data storage and management. Contributed to desktop application development using WPF and WinForms. Ensured smooth integration and coexistence between modern and legacy systems. Optimized application performance and implemented enhancements for better user experience.

Led the development and maintenance of integrations using C# and .NET Core, as well as a legacy project built on .NET Framework (WPF & WinForms). Mentored and managed a team of developers, providing guidance, conducting code reviews, and ensuring timely delivery of high-quality solutions. Worked on customer support and technical consultations, ensuring efficient resolution of issues and maintaining strong client relationships. Collaborated with a bank and its subsidiaries to implement custom integrations and optimize business processes. Designed and optimized databases using MSSQL and MySQL for secure and efficient data management. Developed business analytics solutions based on the company's main system (Diasoft), utilizing Delphi Script, Rad Studio XE (VCL/FMX), and FastReport. Delivered key insights through the creation of comprehensive reports and dashboards, aiding strategic decision-making. Streamlined workflows and enhanced system performance to meet evolving business requirements.

Supported and developed a website using C# and .NET Framework. Designed, tested, implemented, and maintained a CRM system following established processes, using Delphi 7 and Firebird. Utilized tools such as FastReport and DevExpress for creating reports and enhancing UI components. Developed and maintained warehouse management software, ensuring efficient inventory tracking and operations. Responsibilities: Created new functionality based on technical specifications. Optimized system performance and resolved bugs. Collaborated with the team to deliver reliable and efficient solutions. Results: Gained in-depth knowledge of Firebird and database management. Acquired valuable experience in teamwork and collaborative development. Improved problem-solving skills and the ability to adapt to new technologies and processes.

Administered the company's IT infrastructure, including computers, IBM cash registers, fiscal registrars, video surveillance systems, and other office peripherals. Provided technical support to users, ensuring smooth operation and resolving issues promptly. Developed and maintained the cash register interface, implemented features for receipt printing, and added new functionalities such as SMS notifications for customers. Created solutions for managerial and administrative accounting to streamline business operations. Developed software using Delphi 7 with MSSQL as the database backend, ensuring reliable and efficient data management. Key Achievements: Improved operational efficiency by enhancing the functionality of cash registers and administrative tools. Streamlined customer communication through automated SMS notifications. Strengthened the reliability and performance of the company's IT systems.

Worked in a small team, developing utilities to optimize employee workflows within the company using 1C Enterprise. Designed and implemented tools for specific tasks, including: Automated Printing: Developed a utility for automatic printing of large drawings (A1-A3 formats), streamlining the printing process. Automated Accounting: Created a tool for automatic record-keeping to reduce manual data entry and improve accuracy. Contributed to optimizing company processes by analyzing inefficiencies and delivering tailored solutions. Key Achievements: Improved operational efficiency through automation of routine tasks. Gained hands-on experience in development within a small team environment. Acquired practical skills in 1C Enterprise development and process optimization.

Automated control and information processing systems, automated control and information processing systems