Fullstack Developer with C#.NET & React - Krakow- Hybrid

We Are Hiring: Senior Full Stack Developer (.NET and React)We are seeking an experienced Full Stack Developer who is ready to play a key role in designing, building, and improving enterprise-level applications. This position is ideal for someone who enjoys working across the entire technology stack, contributing to architectural decisions, enhancing user experiences, and ensuring application reliability and performance.This is a senior-level opportunity for a professional who combines deep technical expertise with strong analytical thinking and a proactive mindset.Key ResponsibilitiesContribute to system architecture planning and technical design discussionsDrive user interface enhancements to improve usability, performance, and overall application resilienceApply industry-recognized design principles and architectural patterns when implementing solutionsReview and interpret business and technical requirements, proposing improvements where appropriateProduce clear and detailed technical documentation for developed features and systemsBuild proof-of-concept solutions and prototypes to validate architectural approachesOversee and manage system modifications within structured service management processesSupport and enhance automation initiatives across development and operational workflowsDeliver high-quality technical support, ensuring timely resolution of issuesCollaborate closely with stakeholders to understand objectives and provide effective solutionsRequired Qualifications and ExperienceA minimum of Five years of professional experience developing and maintaining production-grade applications within the .NET ecosystemStrong proficiency in C# and Web API development, with experience building secure, scalable, and high-performing backend servicesSolid hands-on experience with React, developing dynamic, responsive, and performance-optimized web applicationsAdvanced knowledge of database architecture and SQL Server, including complex query development, performance optimization, and tuningPractical experience with continuous integration and continuous delivery pipelinesComprehensive understanding of the Software Development Life Cycle, from requirements analysis through deployment and ongoing supportStrong command of modern web standards including HTML5 and Cascading Style Sheets, with the ability to create intuitive user interfacesExcellent analytical and troubleshooting abilities, particularly in demanding production environmentsHigh attention to detail and commitment to delivering robust, maintainable solutionsIf you are passionate about developing high-quality software, improving system performance, and contributing to meaningful technical decisions, we would welcome the opportunity to connect with you.Please feel free to reach out directly or share this opportunity within your professional network.#Hiring #FullStackDeveloper #DotNet #React #SoftwareEngineering #TechnologyCareers