Hello, I’m

ZubayerHasan

Full-stack developer,security-minded

I build products that ship — an e-commerce business running on real orders, a health-records platform, and the tooling in between.

Portrait of Zubayer Hasan
GET SHIT DONE artwork
GET SHIT DONE
The One Minute
Based in
Dhaka, BD
Focusing on
Web · AI · Security
Available for
Freelance

Featured photos

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Featured builds

A few things I’ve built and shipped.

Real products, the problems behind them, and the tools that bring them to life.

Keep scrolling View all projects
product2024
01 / 07

KICKBUZZ

Live sportswear storefront — import pipeline, COD checkout and order ops for the Bangladesh market.

Next.jsTypeScriptPostgreSQLStripeVercel
product2025
02 / 07

Thypro

Health records and emergency blood-donor matching. Millennium Fellowship 2026, aligned to SDG 3.

ReactSupabaseFHIRTypeScript
tool2025
03 / 07

AgentOps

Observability for LLM agents — trace every tool call, replay failures, diff prompt versions.

PythonFastAPIClickHouse
product2024
04 / 07

SoulCanvas Weddings

Booking and gallery site for a wedding photography brand — enquiry flow and curated portfolios.

Next.jsTypeScriptSanity
experiment2023
05 / 07

HangoutBuddy

Group-to-group social discovery — match whole friend groups instead of individuals.

React NativeNode.jsPostgreSQL
experiment2023
06 / 07

CredChain

Verifiable academic credentials — issue and check tamper-evident records without a central registry.

SolidityTypeScriptNext.js
product2026
07 / 07

This Portfolio

The site you're on — committed dark design system, GitHub-synced projects, RAG chat, and an ATS résumé engine.

Next.jsTypeScriptTailwind CSSMDX

Remote Connectivity

Break free from traditional boundaries. Work from anywhere, at the comfort of your own studio apartment. Perfect for Nomads and Travellers.

Fairbanks, Alaska → Los AngelesFairbanks, Alaska → BrasíliaBrasília → LisbonLondon → New DelhiNew Delhi → VladivostokNew Delhi → Nairobi

What I can help with

From an idea to
something that works.

Product builds, performance reviews, and security-minded engineering. Clear scope, practical decisions, and work you can put into production.

A working first version, end to end — schema, API, UI, deploys — built the way KICKBUZZ was: shipped, not prototyped.

  • Next.js app with typed data layer and CI
  • Auth, payments or integrations as the product needs
  • Preview deploys and a path to production

A good fit for: Founders who need a v1 in real users' hands, not a Figma file.

Idea.
Architecture.
Production.
> READY TO EXECUTE_

Next.js & performance review

A read of an existing app: rendering strategy, bundle, data fetching, Core Web Vitals — with the specific changes that move the numbers.

  • Prioritised findings with before/after measurements
  • PRs for the high-impact fixes
  • A short doc your team can keep working from

A good fit for: Teams whose app got slow and aren't sure where the weight is.

02
Zubayer Hasan

Secure-by-default review

An appsec pass over auth, access control, input handling and secrets — informed by hardening KICKBUZZ after a real credential-stuffing attempt.

  • Threat model for the parts that matter
  • Findings ranked by exploitability, with fixes
  • Guard-rails (rate limits, RBAC, audit logging) where they're missing

A good fit for: Products handling accounts, payments or personal data.

03
CALL
PLAN
BUILD
DEPLOY
LAUNCH

A clear path to launch

A short call to understand the problem and the constraints. A written scope: deliverables, timeline, price. Weekly demos against that scope — no silent months.

04

Tell me about your project

Fixed-scope projects or a weekly retainer. Pricing is project-based — share what you're building and I'll come back with a scope and a number.

Freelance now, around a final year of CS at BRAC University; full-time from graduation.

05

Contact

Let’s make something good.

Tell me about the project: the problem, your timeline, and what you have in mind. Let’s work out the next step together.

Budget (optional)

Frequently asked questions

What can you help me build or improve?

My services include Full-stack product build, Next.js & performance review, Secure-by-default review. Explore the services and deliverables.

Are you available for new work?

Freelance now, around a final year of CS at BRAC University; full-time from graduation.

How does working together start?
  1. A short call to understand the problem and the constraints.
  2. A written scope: deliverables, timeline, price.
  3. Weekly demos against that scope — no silent months.
How is pricing decided?

Fixed-scope projects or a weekly retainer. Pricing is project-based — share what you're building and I'll come back with a scope and a number.

Where can I download your résumé?

Download my résumé as a PDF. You can also use Get Resume at the top of this page.

What is the best way to get in touch?

Send a message through the contact form with what you are building and any constraints, or email mdxubayerhasan@gmail.com.