Developed and deployed 12+ business-critical web modules using Angular, React, Node.js, ASP.NET Core, C#, TypeScript, SQL, AWS and Microsoft Azure, supporting scalable internal and client-facing applications. Engineered Circles with Next.js 15, TypeScript and LiveKit WebRTC, implementing end-to-end encryption (E2EE) via Web Workers and AI-driven client-side noise suppression (RNNoise). Architected a cross-platform PWA and Electron desktop clients for Windows/macOS, including deep linking through custom circles:// protocol handlers. Hardened session and network security with Next.js edge middleware, HMAC-signed session binding, strict CSRF mitigation and multi-tenant token exchange workflows. Built multi-tenant workspaces, cloud recording, AI live transcription and translation, WebSocket messaging and calendar synchronization; integrated Stripe subscriptions and Datadog/Sentry monitoring. Improved application performance by approximately 25-35% across key workflows by optimizing frontend rendering, backend logic, API calls and data handling processes. Mentored 2-3 junior developers on coding standards, architectural patterns and technology usage, helping reduce repeated code review issues by approximately 30%. Supported 20+ production releases and completed 100+ development tasks in Agile/Scrum environments, collaborating with technical and cross-functional stakeholders.

Optimized SQL queries, data access patterns and application logic, improving data retrieval performance by approximately 30-40% in key business workflows. Built and maintained dynamic business web applications with React, Angular and ASP.NET Core, delivering 8+ production features across internal and client-facing systems. Migrated 4+ legacy modules to modern web technologies, improving scalability, maintainability and long-term support for business-critical applications. Integrated Microsoft Dynamics CRM with custom web applications, supporting 5+ business processes with more reliable synchronization and reduced manual data handling.

Delivered 10+ custom web projects for clients using React, Angular, ASP.NET Core, C#, JavaScript and SQL, covering full-stack development from requirements to deployment. Built WordPress websites with custom themes, plugins and performance improvements, increasing page performance by approximately 20-30% in optimized projects. Managed project delivery from concept to launch, keeping more than 90% of projects within agreed timelines through clear requirements, development planning and post-launch support.