Marcin Bojda

• Developed a fuel management platform (DMS) using modular monolith architecture with DDD and CQRS patterns, enabling real-time tracking of fuel terminals, tanks, deliveries, and fuelings across multiple contractors. • Implemented MQTT-based communication with physical IoT terminal devices (initialization, status tracking, delivery sessions) integrated with AWS IoT Core for device management. • Leveraged AI-assisted development with Cursor IDE to accelerate feature delivery, automate repetitive code generation, and maintain architectural consistency across the modular monolith. • Built FIFO accounting module for fuel inventory tracking with full lifecycle management (open/close/reopen/archive), ensuring tax and audit compliance. • Developed custom reporting engine with configurable aggregations, subtotals, and multi-format export (Excel, CSV, PDF), including storage management and wholesale delivery reports. • Implemented real-time dashboard with SignalR for live terminal status monitoring, tank fill levels, and event-driven alert notifications. • Wrote and maintained comprehensive automated tests (unit, integration, system) using xUnit, ensuring domain logic correctness and API reliability. • Contributed to the React 19 frontend with TypeScript, Material UI, React Query, and React Hook Form for a responsive SPA consuming the backend API

● Developed and maintained fullstack features for a social services solution (React, TypeScript, Redux, RTK, React-Hook-Form, .NET 8, RabbitMQ, ASP.NET Core, EF Core, MediatR) ● Implemented business requirements driven by Swedish law changes and evolving client needs, ensuring compliance and adaptability of the system ● Wrote and maintained automated tests across both back end and front end to ensure system quality and stability ● Utilized Docker and Kubernetes for containerization, deployment, and scaling in cloud environments ● Worked in a SAFe/Scrum environment, actively participating in sprint planning, daily stand-ups, code reviews, and collaborative development ● Applied Clean Code principles and CQRSpractices to ensure maintainable, future-proof solutions ● Contributed to GitHub workflows for CI/CD and collaborated in a close-knit team with a focus on knowledge sharing and best practices

● Developed and customized features for a monolithic application, focusing on both the front end (React, TypeScript, Redux, MobX, Bootstrap) and the back end (.NET 8, CQRS, vertical slice architecture, Mediatr, Oracle PL/SQL). ● Utilized Docker for containerization and deployment. ● Worked in a Scrum environment, actively participating in daily stand-ups, sprint planning, code reviews, and pair programming.

● Developing new and customization of the existing features for the internal publishing documents application on frontend and backend ● Working in a scrum. Participation in code review, and pair programming Technologies: .NET6, React.JS, Redux, Entity Framework, TypeScript, RTK Query, Material-UI

● The client is the world's largest semiconductor chip manufacturer. ● Developing, designing, and implementing the new features of big games performance analytics platforms, applying knowledge of .NET Core 3.1, .NET Framework 6, Javascript, JQuery, SQL, Entity Framework. ● Working in scrum. Participation in code review, pair programming

● Developing, designing, and implementing the new features of a big analytics platform, applying knowledge of .NET Framework 4.6.1, LINQ, REST, CQRS, NUnit, MSSQL, Azure Functions.

● Integrating with third-party payment service and external APIs as part of implementing the customer payment service applying. As a result, safe payments using Dotpay. ● Developing a new product module for the financial services (Whitelist), desktop application applying knowledge of .NET Framework 4.7, REST, SHA-512. As a result, hundreds of satisfied clients. ● Developing, designing, and implementing the new API endpoints as a part of the newly rewritten customer web service, applying knowledge of .NET Framework 4.7, FluentValidation, Dependency Injection, LINQ, REST, EF, and AutoMapper. ● Developing, designing, and implementing modules for the transport industry, applying knowledge of .NET Framework 4.7, FluentValidation, REST, MSSQL, Dependency Injection, LINQ. ● Providing technical assistance for the developer team members related to the .NET Web API 2 and the newest technologies.

● Working in a scrum team of .NET apprentices. ● Implementing notification service for notifying users about impending payment dates or other relevant information using Hangfire. ● Learning new technologies like .NET Core, Hangfire, PostgreSQL, Dependency Injection, AutoMapper.