Andrei Sapegin Email & Phone Number

Lisbon, Portugal

Lisbon, Portugal

• An international software company specializing in custom software solutions for the financial industry. I contributed to a project focused on rebuilding a wealth management platform for a U.S. client, with an emphasis.
• Refactored a microservice for ingesting data from the legacy platform to the new one, increasing the data ingestion rate by 40%.
• Configured database schema migration and seeding using bash scripts and devcontainers, cutting local environment setup time significantly.
• Developed a new NuGet package using source generators for automated queue class generation, decreasing development time for new data microservices by 35%.
• Designed and implemented a new backend service using SignalR and Azure Notification Hubs to consume Kafka messages and send notifications to clients, resulting in a 25% increase in user engagement.

Lisbon, Portugal

• Farfetch is a global digital platform for luxury fashion, connecting creators, curators, and consumers. At the core of the business is a marketplace with an annual GMV exceeding $4 billion and approximately 4.5 million.
• In a team of 3, developed 2 new.NET microservices from scratch, utilizing Apache Kafka as a message broker and MongoDB as a database.
• Conducted 5 knowledge-sharing sessions covering topics such as clean code, monitoring, service interactions, and data model mappings, resulting in the adoption of new libraries and efficient code practices.
• Followed a 100% test coverage rule for the entire codebase developed and maintained by our team.
• Expanded personal contributions significantly by delving into frontend projects and tapping into React.js with its ecosystem.
• In a team of 7, developed and successfully launched a new email communications tool that enhanced segmentation and personalization, and introduced new capabilities for marketing teams, boosting customer engagement and.

Moscow, Russia

• AndersenLab is an international IT company with over 3000 employees, specializing in developing custom software solutions. I joined a project dedicated to creating a telemedicine platform from scratch for a US client..
• In a team of 3 backend developers and a system architect, developed and delivered an MVP consisting of 10 services within 4 months.
• Implemented configuration and utilization of packages such as Automapper, Refit, and FluentValidation throughout the solution.
• Configured database scheme migration and seeding via EF Core.
• Independently created and fully covered with unit tests 2 domain services and 1 backend-for-frontend (BFF) service from scratch.
• Designed a versatile infrastructure project for common integration test configuration using Refit library.

Moscow, Russia

• Onelya, a private company with up to 100 employees, specialized in developing and maintaining APIs for travel websites and agencies. These APIs provided bookings, modifications, and refunds for tickets and additional.
• Independently developed several key features, such as ordering food from restaurants to trains and generating electronic railway tickets.
• Successfully integrated 3 new third-party Web APIs.
• Increased test coverage of core functionality to 80%.
• Implemented caching for railway ticket searches using Redis, reducing server response time by 70% and significantly enhancing overall application performance.
• Migrated (in a team of 4) the code-base from.NET Framework 4.7 to.NET Core.

Moscow, Russia

• DeltaCredit was a russian mortgage bank that belonged to the Société Générale Group from 2005 to 2019 (later acquired by Rosbank). In 2015, the bank began transitioning its business processes to digital, triggering.
• Successfully implemented multiple features, including integrations with third-party APIs, within scheduled timelines and with high-quality outcomes, significantly improving customer interaction processes.
• Conducted 7 knowledge-sharing sessions within the team on topics such as clean code, unit testing, refactoring, and design patterns, leading to noticeable improvements in code quality.
• Proposed the use of ASP.NET MVC and the new Angular framework instead of HTML with vanilla JS and jQuery for new projects, resulting in expanded capabilities and increased stakeholder satisfaction.
• Became the main point of contact for an external development team, setting tasks and overseeing their work.
• Led a crucial project automating the tele-sales workplace (included processing outbound and incoming calls, popup notifications, chat-bot, etc.) and supervised a team of 2 developers, resulting in successful launch of.

Moscow, Russia

• SIAM Consulting, a private company with around 60 employees, specializes in developing, maintaining, and supporting solutions for railroad logistics management (B2B applications). The key business logic of the main.
• Gained extensive knowledge about T-SQL features and SQL query optimization techniques, culminating in proposing new optimization ideas.
• Developed approximately 10 new SQL stored procedures and functions with good response times.
• Optimized nearly 15 SQL stored procedures and functions (each containing up to 2000 lines of SQL code) resulting in a response time reduction from 40% to 250%.
• Proposed the idea of simplifying the solution's architecture by dividing one database into multiple, as an initial step.
• Initiated enhancements to the user interface of the desktop application, making it more user-friendly and intuitive.

Moscow, Russia

• LANIT is a large system integrator with approximately 14,000 employees, providing diverse IT solutions across numerous teams and projects. Joining the company in 2007 as a QA engineer, I was part of the department.
• Designing, implementing and maintaining "thick" desktop client (WinForms).
• Developing server-side functionality using WCF.
• Writing and enhancing SQL scripts.
• Designing unit tests, resolving bugs, collaborating with system analysts, QA engineers, and technical support teams.Achievements:
• Swiftly adapted to responsibilities, resulting in effective contributions to the project from the first months.