.NET / C# & React Architect - Krakow - Poland - Hybrid

Location: Kraków, Poland (Hybrid)Contract Type: B2BIndustry: Global organization / International projectsRole OverviewWe are seeking an experienced .NET / C# & React Architect to lead the design and implementation of scalable, enterprise-grade web applications within a global environment. This role combines hands-on technical leadership with architectural ownership across backend and frontend domains, while ensuring strong alignment with UX/UI best practices.The successful candidate will define architectural standards, ensure system scalability and security, and support distributed development teams in delivering high-quality digital solutions.Key ResponsibilitiesDefine and oversee end-to-end solution architecture using C#, .NET (Core/6+), and ReactDesign scalable backend systems, APIs, and microservices using C#Establish frontend architecture standards, component strategies, and state management patternsEnsure performance, security, maintainability, and scalability across applicationsAlign technical solutions with UX/UI best practices, accessibility, and responsive designProvide architectural guidance, conduct code reviews, and mentor development teamsCollaborate with product, UX/UI, and global stakeholdersSupport cloud-native architecture and DevOps practices (Azure preferred)Required Skills & ExperienceExtensive experience with C# and .NET / .NET Core in enterprise environmentsStrong expertise in React and modern frontend ecosystemsProven experience designing distributed systems and microservices architecturesSolid understanding of UX/UI principles and user-centered designExperience with RESTful APIs and system integrationsKnowledge of TypeScript, state management libraries, and modern frontend toolingExperience with CI/CD pipelines and DevOps practicesCloud experience (Azure preferred)Strong communication skills in EnglishNice to HaveExperience building or maintaining design systemsExperience in global or distributed teamsStrong background in performance optimization and security best practicesWhat We OfferLong-term B2B engagementCompetitive daily rateParticipation in international, enterprise-scale projectsHybrid working model in KrakówOpportunity to shape architectural direction in a global organizationIf you meet the above criteria and are interested in long-term architectural ownership within a global environment, we encourage you to apply.