Software architecture and obsessive code quality.
CTO at devmonks. Mobile, web and AI products across five industries, built for founders who need them to keep working.
Selected work
pin_code_fields
A themeable PIN and OTP input for Flutter, MIT licensed. In production in thousands of apps, and the largest of the five I publish under my own name.
Nearly half a million downloads a month across five open source packages. 160 of 160 pub points.
Odoo LLM
An open source toolkit that puts language models inside Odoo: providers, retrieval, knowledge bases and agent tooling, as thirty-four installable modules. Built at Apexive, my previous company, and theirs rather than mine.
1,492 of roughly 1,900 commits are mine, which makes me its largest contributor. 215 stars, 157 forks.
Dingi Life
Maps and navigation for Bangladesh, with live traffic and Bangla voice guidance. I owned iOS releases, OS migrations and SDK updates on an existing Swift codebase.
1,000,000+ downloads at peak on Google Play.
GetEase
On-demand lifestyle services marketplace in Amsterdam, from massages and haircuts to personal trainers. I worked on the mobile side: two Flutter apps, one for customers and one for the professionals taking the work.
Two apps, iOS and Android. Launched in Amsterdam, then Rotterdam.
Healthy Longevity Café
Companion app for a longevity café in Prague. Personalisation, diagnostic results and loyalty, built against the backend team's APIs.
Both platforms from one Flutter codebase.
AI character platform
A social platform built around user-created AI characters. Generation pipeline, persistent chat state, subscription billing.
Full stack. FastAPI, Flutter, Next.js, GCP.
Under NDA
KindleDrop
Wireless ebook transfer to Kindle: drag a file in, get a four digit code, open it in the Kindle browser. Free to use, funded by its supporters, run by me.
4,000+ books transferred every month.
JoldiApp
An ordering site I co-founded in Dhaka and took from zero to launch. Customers placed an order, and we went to the shops, bought what they asked for and delivered it. No warehouse, no inventory, just people doing the work while the software learned what people wanted.
Founder, engineer, and one of the delivery guys.
No longer operating
HandyX
A two-sided marketplace with booking, live tracking and payments. Both apps built from scratch and shipped to both stores.
One engineer, about two months.
Around forty more are not on this list: client apps, internal tools and packages that did their job without needing a page of their own.
In progress at devmonks
Generative room imaging
AI image generation for property brokers, so a room can be shown restyled before anyone visits it.
In progress
B2B commerce
Products sourced from suppliers across the US and delivered quickly to tattoo studios and artists.
In progress
Marketing site rebuild
A full rebuild of a client's marketing site, built for search engines and for the AI answer engines that increasingly sit in front of them.
In progress
References
I saw how he started to learn Flutter when it was released, did not give up in spite of a lack of resources, and built his own modules. Today he is one of the dependable Flutter developers in the industry.
Showrin Barua, Principal Software Engineer at Enosis SolutionsWorked on the same team
He showed his expertise from implementing pixel perfect user interfaces to complex logic for dynamic applications, on both Android and iOS.
Ahmad Firoz, Senior Product Designer, co-founder at Lumentra LabsManaged Saiful directly
One of the most inspiring CTOs I have had the chance to connect with. Open-minded, genuinely helpful, and highly resourceful.
MD Tarek RahmanAfter a mentoring session
How I work
Research, understand, discuss, implement.
It is a loop, not a line. Looping back is cheap. Pushing through a broken plan is expensive.
Use AI, own every line.
AI generates, engineers verify. Every line gets read, understood, tested and linted before it ships.
Conservative estimates, on purpose.
Finishing early builds trust and finishing late destroys it, so the numbers stay careful.
What I own
Architecture and direction.I make the calls on system shape and integration design, and I review the pull requests that matter.
Whether it is good enough.The bar is the same whoever writes the code. It does not drop because a deadline is close.
The outcome, not the ticket.Building software is one thing. Creating value and owning the work is another.
Contact
A product to build, or a build that has gone sideways. Send the details and you get an honest read on scope, risk and what it will actually take.
Dhaka, Bangladesh