WORLD 4-1
Coolblue
Senior Software Engineer
Front-facing engineer at a top Dutch e-commerce company, building scalable solutions for millions of users.
rana@rotterdam:~$ whoami
Salauddin
Rana
A real human software engineer. For more than 12 years, I've built applications for businesses that started small and grew to reach millions of customers. The computers mostly listened.
$ cat player.json
{
"name": "Salauddin Rana",
"class": "Software Architect",
"suit": "Full-Stack",
"level": "12+ years of experience",
"score": "98M req/day",
"base": "Rotterdam, NL"
}BE94%
FE72%
01 / ABOUT
I build web apps that help businesses grow without becoming a mess.
Growth is the goal. A mess is the side effect I avoid. I build what brings in revenue and scales, cleanly enough that the next developer doesn't need therapy and your AI agent doesn't hallucinate.
I've helped businesses grow in e-commerce, SaaS, HR tech, health tech, fintech and Shopify apps, including four years in leadership roles.
02 / DOMAIN EXPERTISE
Industries I've built for.
Hit a block to ask the agent what I built there.
03 / INVENTORY
Items collected
64 items across 7 bags
SELECT BAG
$ ls ./backend// main weapon
- Node.js
- Express.js
- Next.js
- Nest.js
- TypeScript
- JavaScript
- PHP
- Laravel
- Symfony
04 / POWER-UP
Full-time vibe coder.
Part-time quality police.
Hand-written coding is pretty much dead. Software engineering isn't. Building is fast now, and I make sure the agent writes code like your senior developer, not your intern.
> HARNESS SETUP [↓ → A]
Rules, context, MCP servers and agent configs tuned so the first answer is usually right.
> PLAN & REFINE [← ← B]
Work is planned and refined into small, clear tasks so every agent knows exactly what done looks like.
> RUN & REVIEW [↑ ↑ A]
Agents build, test and open the PR. I review it, and if an agent drifts, I tune the harness.
> SHIP & SCALE [→ ↓ B]
Deploy, measure performance under real traffic, and make sure the architecture still holds up. Then repeat.
05 / WORLD MAP
Experience
WORLD 3-2
WPDeveloper
Director of Engineering
In charge of the SaaS and Shopify app teams. Built the system architecture and made the best technical decisions for the business.
WORLD 3-1
G&R
Tech Lead
One of the largest ad networks in Bangladesh. Led and managed the tech team building scalable solutions on AWS.
WORLD 2-2
Deligram
Backend Engineer
Built RESTful APIs for an omnichannel e-commerce platform in Bangladesh.
WORLD 2-1
SD Asia · MyCash Online
Backend Engineer
Built startup and funding management at SD Asia, and worked on MyCash Online, a fintech company.
06 / PASSIVE PERKS
Leads the team.
Still ships the code.
Beyond the developer: the skills that don't fit in an inventory bag. Always active, no mana required.
> list your passive perks
⏺architectpassive · always on
Works in complex microservice systems built for heavy traffic. Designs event-driven and distributed systems that scale as customers grow, without the headaches.
⏺team-builderpassive · always on
Led multiple teams of 25+ engineers. Built the company's hiring process and the product development flow, from requirements to sprints to deployment.
⏺bridge-builderpassive · always on
Aligns business and engineering on realistic expectations, so delivery stays smooth and nobody burns out getting there.
⏺failsafepassive · always on
Learned from past incidents, so every launch ships with real monitoring, backups and a rollback plan.