Nazmul Khalid

Technical Leadership: Architecture Reviews, Code Rescue and Fractional CTO

I review, fix and lead existing software for founders and small teams: architecture and code reviews with a written report, hands-on fixes for the risky parts, and part-time technical leadership when you need a senior decision-maker but not a full-time CTO. I run the same checks on my own products. A test pass on a school management SaaS found six real bugs in code already called done, one of which let a school read another school's data. A cross-tenant test on a hospital platform led me to rebuild 235 database links so the database itself refuses links between hospitals.

Starting from $750 (architecture & code review)Discuss your project

Problems I solve

  • Your product works, but every new feature seems to break something else.
  • The developer who built it has left, and nobody fully understands the code.
  • You're about to raise money or sign a big customer, and you need to know what's really under the hood.
  • You need someone senior to make technical decisions, but not a full-time CTO.
  • Your team ships fast with AI coding tools, and you're not sure what's slipping through.

What you get

  • Architecture and code review with a written report: what's risky, what's fine, and what to fix first
  • Security and data-separation checks, including tests that try to reach other customers' data
  • A prioritised fix plan with effort estimates
  • Hands-on fixes for the risky parts, made structurally so they stay fixed
  • Part-time technical leadership: architecture decisions, code review and roadmap, about 20 hours a week
  • Written documentation, so the next developer can pick the work up

Proof: work I've shipped

  • Bicitra EMS

    A multi-tenant School Management SaaS built for Bangladesh, phone-first.

  • HMS — Hospital Management SaaS

    An MVP of a multi-tenant hospital management platform, from the front desk to the ward to the accounts office.

I also deploy and run what I build. DevOps for startups →

Stack

  • TypeScript
  • Node.js
  • NestJS
  • Next.js
  • PostgreSQL
  • MongoDB
  • Laravel
  • Docker
  • Playwright

Further reading

Questions

What does an architecture and code review include?
I read the code and look at the architecture, security, infrastructure, performance and technical debt. You get a written report and a roadmap: what's risky, what's fine, and what to fix first, with rough effort for each item. It starts from $750, and it's a good first step before any bigger piece of work.
Can you take over a codebase another developer built?
Yes. I usually start with a paid review, so we both know what we're dealing with before we agree on the fix or build work.
What is a fractional CTO, and do I need one?
A senior engineer who makes the technical decisions for you part time: architecture, priorities, code review and the technical roadmap. It fits when you have a product and maybe a developer or two, but a full-time CTO would be too much. Part-time engineering or leadership starts from $4,500 a month for about 20 hours a week.
Can you review code written with AI tools?
Yes. I built a hospital management platform with an AI pair programmer, so I know where AI-written code tends to go wrong: it looks finished and passes the tests written alongside it. I check it with tests it can't bend, like running against a real database instead of mocks.

Start with a conversation

Tell me what you're building, and I'll reply with questions or a next step. See how we can work together.

Or send the details →