Muhammad M.

I bring industry-level, hands-on experience delivering production-ready full stack solutions, from backend architecture and infrastructure to frontend implementation and deployment. Currently at QuanTrust PKI, I build and maintain two live production systems: a digital signing server processing 5 million+ successful transactions, supporting cryptographic signing and verification of Word documents, PDFs, executables (EXE, DLL, JAR, APK), and JSON payloads, and a multi-tenant, licence-based mail server platform with hierarchical admin controls, domain provisioning, and user management. In parallel, I work as a DevOps Engineer at Aerdrya, owning end-to-end AWS infrastructure for a remote-first production environment, ECS, ECR, VPC, ALB, S3, Route 53, IAM, and Cognito — alongside CI/CD pipeline automation and frontend code reviews. What I bring to a project: - Designed scalable architectures and clean software design patterns across backend and infrastructure layers - Implemented secure, responsive web apps using modern UI/UX practices and Figma prototypes - Built and maintained robust codebases, handled bug fixes, and ensured high-quality delivery using Git and GitHub workflows - Automated CI/CD pipelines for seamless deployments using GitHub Actions and cloud-native tooling - Worked across AWS (ECS, ECR, Lambda, Cognito, DynamoDB, IAM, VPC, ALB) and Azure environments - Integrated OAuth2.0, AWS Cognito, Keycloak, and PKI-based authentication for secure, role-based access management - Delivered solutions using MongoDB, MariaDB, MySQL, and DynamoDB, with a strong focus on scalable database design and management - Dockerized full-stack apps for deployment across multiple environments - Built responsive frontends and cross-platform mobile apps using React.js, Next.js, TailwindCSS, and React Native - Debugged and resolved production incidents through systematic root-cause analysis, minimising downtime Portfolio Site — A Next.js portfolio with a working backend-integrated contact form, live at muhammad-mahdi.vercel.app. I'm not just building apps, I'm building systems that scale, heal, and evolve.