Tech blog • 4 MONTHS AGO
Explain Garbage Collection (CMS vs G1 GC)?
In an earlier article I had mentioned about the Java interview question. well this happens to be the second question on the list.
By Markian Mumba
M3
A1|FEATURED
Welcome to my digital living room
ENGINEER • LEARNER • OCCASIONAL PHILOSOPHER
Hi, I'm Mark. I'm a software engineer who believes the best code solves real problems for real people. This is where I share my learnings, explore ideas, and occasionally ramble about the intersection of technology and life.
Currently:
Exploring distributed systems, reading "Designing Data-Intensive Applications", and diving deep into the psychology of debugging.
This is how I look when I'm debugging
THOUGHTS & IDEAS
Where I share what I'm learning and thinking about
Tech blog • 4 MONTHS AGO
What is the difference between HashMap, Hashtable and ConcurrentHashMap?
As I was scrolling through my usual YouTube feed and watching developer talks, a video was suggested on my homepage. The title was something like "JP Morgan interview questions for Java developers.
By Markian Mumba
Tech blog • 5 MONTHS AGO
Building an Image Upload Service with Azure Blob Storage (and a Few Tangents Along the Way)
Currently most of the company’s stack is still based on VPSs. The bigger goal is to move services to the cloud (some are already there).
By Markian Mumba
Tech blog • 6 MONTHS AGO
Scaling Databases, CAP Theorem, and the Magic of Quorum
This week, I stumbled on a few articles that got me thinking about scaling and managing large-scale databases. Inevitably, that takes you straight into the.
By Markian Mumba
STORIES FROM THE FIELD
Projects that taught me something worth sharing
FolioCuts
PROJECT • 1 MONTH AGO
A digital barbershop management platform for Kenyan barbershops that replaces paper ledgers with intelligent commission tracking, M-Pesa payment integration (STK push, automated receipts), and automated loyalty rewards. Features live analytics, staff performance dashboards, and 3-minute guided onboarding.
Garbage Collection System
PROJECT • 2 MONTHS AGO
A fullstack waste management platform that connects households with local collectors, tracks pickups in real time, and automates payments and payouts — all built with Next.js, Spring Boot, and PostgreSQL.
Rentitup
PROJECT • 3 MONTHS AGO
A rental platform that connects machinery owners with people who need them — from small contractors to everyday homeowne…
ESTC Website
PROJECT • 1 MONTH AGO
A corporate website for ESTC, a professional training organization offering custom programs in Leadership, ICT, HR, and …
Bag street Kenya
PROJECT • 4 MONTHS AGO
A platform for selling bags, shoes and scarves. Gives a variety of goods to choose from and uses WhatsApp when you want …
📰
EDITORIAL: Why I Build Things
Every project is a story of problem-solving, learning, and sometimes failing spectacularly. I build things not just to solve problems, but to understand them better. Each project teaches me something about people, systems, or myself.
WANT TO BUILD SOMETHING TOGETHER?
I'm always looking for interesting technical challenges and opportunities to build systems that solve real problems. Let's discuss your project.
Let's TalkMy Story
How I got here, what I'm learning, and what keeps me curious
My fascination with technology began with smartphones. I remember the day my dad brought home a Samsung Note 5—it wasn't just a phone to me, it was a marvel. I'd sit for hours in local movie shops with WiFi, watching videos on things like octa-core processors, hyperthreading, and multitasking.
Years later, I chose to pursue Computer Science, and it was like discovering a new universe. Compiler construction, distributed systems, concurrency—each concept revealed just how deep the rabbit hole goes. I was hooked.
If there's one thing this journey has taught me, it's the importance of curiosity. Try, fail, learn, and try again. As Alan Watts said: "The purpose of music is not the end of the composition… the whole point of the dancing is the dance." For me, software engineering is the same—the beauty is in the process.
What I'm Currently Curious About
📚 Reading
"Designing Data-Intensive Applications" by Martin Kleppmann and anything about distributed systems.
🔧 Building
Exploring microservices patterns, learning Rust, and experimenting with event-driven architectures.
🤔 Exploring
How philosophy intersects with software design, and the art of writing code that humans can understand.
🎯 Learning
Advanced concurrency patterns, system design at scale, and the balance between performance and maintainability.
My Journey
2025
Fullstack Developer at Cloudit
Building tailored software applications for clients across industries. Working across the stack to deliver production-grade systems with impact.
2025
Backend Engineer at Kyosk
Joined the payments squad, contributed to Java-based microservices, and improved test coverage to 80% on SonarQube.
2023
Freelance Developer
Built client-facing websites using Next.js and CMS platforms. Designed and deployed a pharmacy inventory system with ERPNext.
My Toolkit
Languages & Frameworks
JavaSpring BootNext.jsTypeScriptPythonReactTailwind CSS
Infrastructure & Tools
DockerPostgreSQLMongoDBVPSLinuxGitNginxCI/CD
Architecture & Design
MicroservicesREST APIsDomain-Driven DesignEvent-Driven Architecture
Fun Facts About Me
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I think distributed systems are beautiful puzzles waiting to be solved
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I enjoy diving into youtube videos where the person is talking about a niche topic… 'what is attention?? and then goes to explain something so indepth'
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I love reading books on philosophy and life lessons
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I genuinely believe music heals the soul
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Working out is second nature to me
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I enjoy film… not movies. Film!!!
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Big tech nerd… if money allowed i would have the latest macbook pro each year
Let's Connect
I love meeting fellow learners and builders. Whether you want to discuss ideas, collaborate on something interesting, or just say hello.