From networks to code — heading toward data.

Hands-on technical operations on ATM infrastructure across multiple deployment sites — combining preventive maintenance, real-time incident response, and network diagnostics. This operational exposure reinforces a systems-first engineering mindset that directly shapes my software architecture decisions.

• Preventive and corrective maintenance of ATM infrastructure across multiple sites
• Network diagnostics and connectivity troubleshooting at the protocol level (TCP/IP, LAN)
• Real-time incident response and system reliability monitoring
• Hardware component-level diagnostics, repair coordination, and parts management
• Vendor escalation management and SLA compliance tracking

Designing and building full-stack platforms, REST APIs, and production-grade web applications for clients. Full ownership from requirements gathering to production deployment — architecture, development, containerization, and infrastructure.

• Architected and built REST APIs with NestJS following clean architecture and modular design principles
• Implemented JWT authentication with refresh token rotation, device session tracking, and RBAC
• Containerized applications with Docker and deployed on Linux VPS with Nginx reverse proxy and PM2
• Designed normalized relational database schemas with Prisma ORM targeting PostgreSQL and MySQL
• Collaborated directly with clients to define technical specifications and manage delivery timelines

Built and maintained web applications and backend APIs in production. Worked across the full stack — from React user interfaces and REST API design to relational database modeling and software architecture decisions.

• Developed and maintained RESTful APIs consumed by React frontends and mobile clients
• Designed and normalized relational database schemas in MySQL, optimizing for query performance
• Built reusable React UI components with TypeScript, focused on maintainable component architecture
• Participated in architecture discussions and contributed to team code review processes
• Introduced modern TypeScript patterns to gradually modernize legacy JavaScript codebases

Intensive 6-month bootcamp covering modern web and mobile development. Transitioned from systems engineering into application development — React, React Native, TypeScript, and API integration in a fast-paced, project-driven environment.

• Built React web applications and React Native mobile apps from scratch
• Learned TypeScript, modern JavaScript patterns, and REST API integration
• Collaborated on team projects simulating real professional engineering environments
• Developed foundational knowledge of component architecture and client-side state management

5-year engineering program in IT infrastructure, systems administration, and networking. Built the technical foundation that now shapes every software architecture decision I make — an understanding of how systems actually work at the hardware and network level.

• Linux server administration: setup, user management, file permissions, and process control
• Networking: TCP/IP stack, routing protocols, VLANs, and enterprise network architecture design
• Infrastructure: data center concepts, hardware management, and server provisioning workflows
• Scripting: Bash automation for recurring system administration and maintenance tasks
• Final year project: network infrastructure design for a medium-sized enterprise