Senior Full-Stack Engineer

I lead distributed platform engineering and contribute as a senior full-stack engineer for the Nexus EMS and SCADA platform. I work with React and TypeScript on the frontend and .NET/ASP.NET Core services on the backend, using PostgreSQL, EF Core, SignalR, Redis, InfluxDB, Authentik OIDC, and Azure DevOps.

I lead a team of eight engineers through architecture decisions, agile ceremonies, code reviews, and a clean-architecture and testing culture. The platform handles more than 100,000 IoT messages per second, and CI/CD improvements reduced deployment time by 60%.

I also design distributed and AI-enabled systems, including a Go two-phase commit API for energy trading, a production RAG knowledge system based on Qdrant and LangChain, and an enterprise LLM platform using vLLM, llama.cpp, and LiteLLM.

I developed enterprise products and IoT-focused full-stack systems, including the Nexus EMS/SCADA platform and the Plano360 retail planogram platform. My work included React, TypeScript, .NET Core, PostgreSQL, MySQL, Azure storage, real-time telemetry, and high-performance messaging.

I built a Go-based ingestion pipeline for large XLS/XLSX files from AWS S3 with parallel processing, progress tracking, and error recovery. I also worked on distributed systems, cloud integrations, backend services, and production-quality delivery practices.

I worked within a polyglot maritime enterprise backend environment using .NET/C#, Java Spring Boot, NestJS/TypeScript, Go, and Django/Python services connected to shared Oracle infrastructure. I standardized API contracts and supported CI/CD across heterogeneous technology stacks.

I built and operated the Product InfoGate NestJS backend for more than three years. The service used NestJS, TypeORM, MySQL, Oracle, Perl ETL scripts, Docker packaging, SFTP releases, cron automation, and a jQuery Mobile frontend.

I also developed a Go-based maritime data synchronization service for bandwidth-constrained satellite vessel networks, implementing chunked transfer, resume logic, conflict resolution, Kafka reassembly, MongoDB metadata, and Keycloak OIDC authentication. I led a corporate platform suite serving more than 500 users and mentored junior developers.

I contributed to the Lenovo Edge IoT MVP, SmartConnect, using MQTT and ZeroMQ messaging, .NET backend services, Xamarin mobile development, C/C++ device libraries, and Azure authentication.

I designed asynchronous device-management workflows with resilient error handling and retry mechanisms. I also supported the migration of a desktop car-rental application to a scalable web platform using ASP.NET Web API and Telerik UI.

I served as a web developer and technical lead, delivering web application architecture and client solutions. I led Android and POS development for retail clients, completing two major deployments within six months.

I architected ASP.NET Web API and Angular solutions and introduced test automation that reduced regression testing time by 40%.

I delivered enterprise IT service management applications using ASP.NET, C#, TypeScript, Python, Java, Groovy, PHP, and Linux-based infrastructure. My responsibilities included Linux security hardening, KVM virtualization, Ansible automation, Docker, Kubernetes, and ITSM platform development.

I worked as both an ITSM consultant and senior web developer, supporting enterprise web application delivery and operational automation.

I developed self-service payment kiosk systems using C/C++, WPF, and embedded hardware integration. My work focused on reliable software for physical devices and payment-related workflows.

I worked on electronic funds transfer platform engineering, including ATM transaction processing with Java/J2EE, C++, and C.

I developed SMS and messaging gateway software using SMPP and Java RMI, focusing on high-throughput message routing.

I worked as a freelance developer using VB6, DCOM, and Microsoft Access.

I began my software engineering career developing core banking software with VB6, C++, DCOM, and the bMaster platform.