API design, Cloud Devops, React, Typescript, Ruby, Python, AWS, Vue, Node.js, Google Cloud, Jenkins, Azure, Distributed systems architecture, Code review discipline, Go, GitHub Actions, Test-Driven Development, Full-Stack Development, CircleCI, Behaviour-Driven Development, Monitoring and observability, System design and architecture, Infrastructure automation, Scalable backend systems, Software reliability and performance, Secure coding and production operations, CI CD pipelines