Hello, I'm
Melvin Liu
Backend Engineer
Building production-scale distributed systems, high-volume data pipelines, and resilient cloud infrastructure. Proficient in Python, Ruby on Rails, and Node.js with deep experience in AWS, GCP, observability, and data integrity patterns.
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About Me
I'm a backend engineer with deep expertise in building high-scale fintech systems that serve millions of users. My focus is on distributed architectures, data pipelines, and cloud infrastructure that reliably handle production workloads.
I specialize in server-side engineering with Python (Django), Ruby on Rails, and Node.js, along with hands-on experience deploying and monitoring systems on AWS and GCP. My work emphasizes observability, data integrity, and building idempotent services that maintain consistency under failure.
Currently at Kredivo Group, I maintain backend APIs processing over 7 million requests daily, optimize database performance, and participate in 24/7 on-call rotations to ensure system reliability and rapid incident response.
Experience
GitHub Activity
Active contributor and open-source enthusiast
Recent Activity
What People Say
"Melvin is a skilful learner. He is proactive and asks thoughtful questions that displayed his passion during work. Melvin is curious with not just the technical problems, but also the business process in general. During my work with Melvin, I can see that he has grown tremendously as he is always open to feedback and criticism. I believe he will be an invaluable team player for any engineering position he is in."
Aldrich Halim
Founding Engineer | MSc @ NYU | LPDP Scholarship 2023 at Makmur.id
Technical Blog
Thoughts on backend engineering, performance, and scalability
The Price of Utilizing Random UUID on Database Performance
Understanding the performance impact of using popular random UUID (v4) as primary key in SQL databases
Steganography - The Art of Concealing Messages
Would you like the ability to communicate privately with a fellow engineer using an encrypted method, reminiscent of how Nazi operators communicated during World War II?
Tabnabbing Attack 101
Did you know that the 'noreferrer' attributes play a pivotal role in web security? Learn about tabnabbing attacks and how to prevent them.
Let's Work Together
I'm always interested in hearing about new projects and opportunities. Feel free to reach out if you'd like to collaborate or just chat about web development.