Achievements:Designed and managed the implementation of ApiGateway based on KrakenD, that eased the transition from a monolithic application to microservices.Designed and has agreed the RACI matrix, enhancing the transparency of the architecture design and alignment process for all participants.Orchestrated the process of application architecture design (C4) and maintenance an up-to-date architectural repository, which was previously absent in the company and became a basis for all architects and developers in decision making.Defined architectural principles and approaches, resulting in a shortened timeframe for making architectural decisions.Created maturity models and a Technology Radar, enabling teams to assess their adherence to best practices and standards, and to create a roadmap for aligning with cloud-native approaches.Reorganized the process of making changes to the architecture, reducing the time to market for new ideas.Technology stack:• GoLang, PHP, .NET 6, React, TypeScript, Node.js, C4, Structurizr• PostgreSQL, MySQL, MSSQL, ElasticSearch, Redis, KeyDB, Memcached• Kafka (Confluent), RabbitMQ, REST, gRpc, KrakenD, Nginx• ELK, Graylog, Loki, Prometheus, Grafana• DDD, MSA, EDA

Achievements:Implemented integration with 3 external providers, resulting in a 20% increase in the number of services offered to users.Designed BFF, enabling independent releases of the website and mobile application, reducing the time-to-market for new features.Migrated existing services, previously deployed on VMs and requiring significant DevOps effort, to .Net Core hosted on Kubernetes, reducing infrastructure costs.Introduced observability practices to the project, enabling faster detection and resolving of incidents, that improved availability metrics.Technology stack:• С# .NET 4.7, .NET Core, Web.Api, EF Core, Dapper• MS SQL 2014-2018, PostgreSQL, MongoDB, Redis, memcached• RabbitMQ, MassTransit• Docker, Kubernetes, Github, TeamCity• ELK, Prometheus, Grafana, AMixr, OpenTelemetry, Jaeger

Achievements: Refactored the existing ETL process, that caused system unavailability, reducing the data transferring time from 180 to 2 minutes. Separated the business logic layer from the data and interface layers while refactoring, reducing time-to-market of new features and integration with other systems by more than 2 times.Implemented an OLAP solution for analytical purposes, reducing development time and decreasing infrastructure costs.Hired 2 developers who successfully completed their probationary period and continued to contribute to the products development.Technology stack:• С# .NET 4.5-4.7, .NET Core, ASP.NET Core, EF Core• Angular, TypeScript• MS SQL 2014-2016, SSIS, SSAS

Achievements:Developed a project profitability calculation system from scratch, allowing Project Managers to make faster data-driven decisions about project initiation.Refactored the trading platform, reducing infrastructure costs, increasing the systems capacity for concurrent users, and lowering the cost of changes.Technology stack:• С# .NET 3.0-4.6, ASP.NET MVC 5, EntityFramework 5, NHibernate• SQL (T-SQL/ANSI); MS SQL 2008-2016