Harun R. Rayhan is a seasoned Senior Software Engineer and DevOps Consultant dedicated to building cloud systems that are calm, fast, and reliable. With over 15 years of experience and having served more than 160 clients, Harun focuses on helping teams design, ship, and operate robust AWS infrastructure through strong automation, streamlined release flows, and production-ready observability.
Key Capabilities:
- Software Engineering Depth: Offers polyglot engineering expertise across backend systems, product delivery, and platform work, emphasizing practical implementation.
- AWS and Cloud Architecture: Specializes in designing and operating reliable cloud systems with built-in security, scalability, and cost control.
- Infrastructure Automation: Implements Terraform, CI/CD pipelines, and deployment workflows to minimize manual overhead and enhance shipping safety.
- Production Reliability: Focuses on observability, alerting, and failure-mode analysis to maintain system stability as traffic and complexity grow.
Services Offered:
Harun is available for consulting, offering services such as:
- AWS architecture review
- Terraform and CI/CD cleanup
- Production observability implementation
- Cost and reliability tuning
Technical Stack:
Harun utilizes a practical stack for modern web and cloud systems, including:
- Languages & Runtimes: Node.js, Python, Go, PHP (Laravel)
- Cloud & Infrastructure: AWS, Terraform, Kubernetes, Docker, Linux
- CI/CD & Automation: Jenkins, GitHub Actions
Use Cases:
Harun's expertise is ideal for teams looking to:
- Modernize their cloud platforms and architecture.
- Automate their infrastructure and deployment processes.
- Improve the reliability, observability, and cost-efficiency of their production environments.
- Gain hands-on depth in AWS and Infrastructure as Code (IaC), backed by 12 active AWS certifications.
Harun's working style is described as opinionated where it matters and flexible where it helps, ensuring effective and maintainable solutions for complex engineering and operational challenges.
