Bednarczuk

Krzysztof

● Led full-stack development of enterprise web applications using Angular (TypeScript) and ASP.NET Core, covering UI, business logic, and data access layers. ● Designed and implemented robust RESTful APIs following SOA principles, enabling reliable integration between internal services and external systems. ● Built mobile and web interfaces, including Flutter applications targeting both iOS and Android. ● Applied event-driven design patterns to decouple services and improve scalability, fault tolerance, and system maintainability. ● Built responsive, accessible user interfaces with Angular, HTML, CSS, and SASS, ensuring consistent behavior across modern browsers. ● Conducted thorough code reviews, enforcing clean code standards, OOP best practices, and long-term maintainability. ● Mentored junior and mid-level developers, supporting onboarding, technical growth, and adherence to engineering standards.

● Developed and maintained Angular-based frontends integrated with ASP.NET Core and Java backends, delivering responsive, data-driven web applications. ● Implemented service-oriented APIs and backend logic using C# and Entity Framework, ensuring data integrity and performance. ● Designed backend systems to handle unstructured data (documents, HTML, conversational logs), enabling semantic retrieval and AI-assisted decisioning. ● Developed and optimized RESTful and SOAP APIs integrated with relational databases, improving throughput by 40% and reducing backend load. ● Implemented containerized deployments using Docker and Kubernetes across AWS and Azure, achieving 99.9% uptime and significantly reducing deployment lead time. ● Streamlined CI/CD pipelines (Jenkins) to automate testing and releases, cutting integration errors by 50%.

● Supported development of ASP.NET and Angular/JavaScript-based web applications. ● Built and maintained backend services using C#, contributing to service reliability and feature delivery. ● Worked extensively with SQL Server and PostgreSQL, optimizing queries and improving database performance by 20%. ● Worked with PostgreSQL and SQL Server, optimizing queries and supporting reporting features. ● Assisted in developing data analytics and reporting tools using Python and Django, reducing processing time by 15%. ● Gained strong foundations in OOP concepts, design patterns, and team-based development practices.